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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.98 by root, Wed May 9 06:45:12 2007 UTC vs.
Revision 1.193 by root, Mon Jul 25 16:51:07 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>
23		19
24	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
25	# if __linux
26	# include <sys/sendfile.h>
27	# elif __freebsd
28	# include <sys/socket.h>
29	# include <sys/uio.h>	21	# include <sys/mman.h>
30	# elif __hpux	22	#endif
		23
		24	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		32
		33	#ifdef _WIN32
		34
		35	// perl overrides all those nice libc functions
		36
		37	#undef malloc
		38	#undef free
		39	#undef open
		40	#undef read
		41	#undef write
		42	#undef send
		43	#undef recv
		44	#undef stat
		45	#undef lstat
		46	#undef fstat
		47	#undef truncate
		48	#undef ftruncate
		49	#undef open
		50	#undef link
		51	#undef close
		52	#undef unlink
		53	#undef mkdir
		54	#undef rmdir
		55	#undef rename
		56	#undef lseek
		57	#undef opendir
		58	#undef readdir
		59	#undef closedir
		60	#undef chmod
		61	#undef fchmod
		62	#undef dup
		63	#undef dup2
		64	#undef abort
		65	#undef pipe
		66
		67	#else
		68
31	# include <sys/socket.h>	69	#include <sys/time.h>
32	# elif __solaris /* not yet */
33	# include <sys/sendfile.h>	70	#include <sys/select.h>
		71	#include <unistd.h>
		72	#include <utime.h>
		73	#include <signal.h>
		74
		75	#endif
		76
		77	#define EIO_STRUCT_STAT Stat_t
		78
		79	/* use NV for 32 bit perls as it allows larger offsets */
		80	#if IVSIZE >= 8
		81	# define VAL64 IV
		82	# define SvVAL64 SvIV
		83	# define newSVval64 newSViv
		84	#else
		85	# define VAL64 NV
		86	# define SvVAL64 SvNV
		87	# define newSVval64 newSVnv
		88	#endif
		89
		90	/*****************************************************************************/
		91
		92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
		94	#else
		95	# define expect(expr,value) (expr)
		96	#endif
		97
		98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
		102
		103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	STRLEN stroffset; \
		113	SV *self;
		114
		115	#define EIO_NO_WRAPPERS 1
		116
		117	#include "libeio/config.h"
		118	#include "libeio/eio.h"
		119
		120	static int req_invoke (eio_req *req);
		121	#define EIO_FINISH(req) req_invoke (req)
		122	static void req_destroy (eio_req *grp);
		123	#define EIO_DESTROY(req) req_destroy (req)
		124
		125	#include "libeio/eio.c"
		126
		127	/* Linux/others */
		128	#ifndef O_ASYNC
		129	# define O_ASYNC 0
		130	#endif
		131	#ifndef O_DIRECT
		132	# define O_DIRECT 0
		133	#endif
		134	#ifndef O_NOATIME
		135	# define O_NOATIME 0
		136	#endif
		137
		138	/* POSIX */
		139	#ifndef O_CLOEXEC
		140	# define O_CLOEXEC 0
		141	#endif
		142	#ifndef O_NOFOLLOW
		143	# define O_NOFOLLOW 0
		144	#endif
		145	#ifndef O_NOCTTY
		146	# define O_NOCTTY 0
		147	#endif
		148	#ifndef O_NONBLOCK
		149	# define O_NONBLOCK 0
		150	#endif
		151	#ifndef O_EXEC
		152	# define O_EXEC 0
		153	#endif
		154	#ifndef O_SEARCH
		155	# define O_SEARCH 0
		156	#endif
		157	#ifndef O_DIRECTORY
		158	# define O_DIRECTORY 0
		159	#endif
		160	#ifndef O_DSYNC
		161	# define O_DSYNC 0
		162	#endif
		163	#ifndef O_RSYNC
		164	# define O_RSYNC 0
		165	#endif
		166	#ifndef O_SYNC
		167	# define O_SYNC 0
		168	#endif
		169	#ifndef O_TTY_INIT
		170	# define O_TTY_INIT 0
		171	#endif
		172
		173	#ifndef POSIX_FADV_NORMAL
		174	# define POSIX_FADV_NORMAL 0
		175	#endif
		176	#ifndef POSIX_FADV_SEQUENTIAL
		177	# define POSIX_FADV_SEQUENTIAL 0
		178	#endif
		179	#ifndef POSIX_FADV_RANDOM
		180	# define POSIX_FADV_RANDOM 0
		181	#endif
		182	#ifndef POSIX_FADV_NOREUSE
		183	# define POSIX_FADV_NOREUSE 0
		184	#endif
		185	#ifndef POSIX_FADV_WILLNEED
		186	# define POSIX_FADV_WILLNEED 0
		187	#endif
		188	#ifndef POSIX_FADV_DONTNEED
		189	# define POSIX_FADV_DONTNEED 0
		190	#endif
		191
		192	#if !HAVE_POSIX_FADVISE
		193	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		194	#endif
		195
		196	#ifndef POSIX_MADV_NORMAL
		197	# define POSIX_MADV_NORMAL 0
		198	#endif
		199	#ifndef POSIX_MADV_SEQUENTIAL
		200	# define POSIX_MADV_SEQUENTIAL 0
		201	#endif
		202	#ifndef POSIX_MADV_RANDOM
		203	# define POSIX_MADV_RANDOM 0
		204	#endif
		205	#ifndef POSIX_MADV_WILLNEED
		206	# define POSIX_MADV_WILLNEED 0
		207	#endif
		208	#ifndef POSIX_MADV_DONTNEED
		209	# define POSIX_MADV_DONTNEED 0
		210	#endif
		211
		212	#if !HAVE_POSIX_MADVISE
		213	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		214	#endif
		215
		216	#ifndef PROT_NONE
		217	# define PROT_NONE 0
		218	#endif
		219	#ifndef PROT_READ
		220	# define PROT_READ 0
		221	#endif
		222	#ifndef PROT_WRITE
		223	# define PROT_READ 0
		224	#endif
		225	#ifndef PROT_EXEC
		226	# define PROT_EXEC 0
		227	#endif
		228
		229	#ifndef ST_RDONLY
		230	# define ST_RDONLY 0
		231	#endif
		232	#ifndef ST_NOSUID
		233	# define ST_NOSUID 0
		234	#endif
		235	#ifndef ST_NODEV
		236	# define ST_NODEV 0
		237	#endif
		238	#ifndef ST_NOEXEC
		239	# define ST_NOEXEC 0
		240	#endif
		241	#ifndef ST_SYNCHRONOUS
		242	# define ST_SYNCHRONOUS 0
		243	#endif
		244	#ifndef ST_MANDLOCK
		245	# define ST_MANDLOCK 0
		246	#endif
		247	#ifndef ST_WRITE
		248	# define ST_WRITE 0
		249	#endif
		250	#ifndef ST_APPEND
		251	# define ST_APPEND 0
		252	#endif
		253	#ifndef ST_IMMUTABLE
		254	# define ST_IMMUTABLE 0
		255	#endif
		256	#ifndef ST_NOATIME
		257	# define ST_NOATIME 0
		258	#endif
		259	#ifndef ST_NODIRATIME
		260	# define ST_NODIRATIME 0
		261	#endif
		262	#ifndef ST_RELATIME
		263	# define ST_RELATIME 0
		264	#endif
		265
		266	#ifndef S_IFIFO
		267	# define S_IFIFO 0
		268	#endif
		269	#ifndef S_IFCHR
		270	# define S_IFCHR 0
		271	#endif
		272	#ifndef S_IFBLK
		273	# define S_IFBLK 0
		274	#endif
		275	#ifndef S_IFLNK
		276	# define S_IFLNK 0
		277	#endif
		278	#ifndef S_IFREG
		279	# define S_IFREG 0
		280	#endif
		281	#ifndef S_IFDIR
		282	# define S_IFDIR 0
		283	#endif
		284	#ifndef S_IFWHT
		285	# define S_IFWHT 0
		286	#endif
		287	#ifndef S_IFSOCK
		288	# define S_IFSOCK 0
		289	#endif
		290
		291	#ifndef MAP_ANONYMOUS
		292	# ifdef MAP_ANON
		293	# define MAP_ANONYMOUS MAP_ANON
34	# else	294	# else
35	# error sendfile support requested but not available	295	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
36	# endif	296	# endif
37	#endif	297	#endif
38		298	#ifndef MAP_HUGETLB
39	/* number of seconds after which idle threads exit */	299	# define MAP_HUGETLB 0
40	#define IDLE_TIMEOUT 10
41
42	/* used for struct dirent, AIX doesn't provide it */
43	#ifndef NAME_MAX
44	# define NAME_MAX 4096
45	#endif	300	#endif
		301	#ifndef MAP_LOCKED
		302	# define MAP_LOCKED 0
		303	#endif
		304	#ifndef MAP_NORESERVE
		305	# define MAP_NORESERVE 0
		306	#endif
		307	#ifndef MAP_POPULATE
		308	# define MAP_POPULATE 0
		309	#endif
		310	#ifndef MAP_NONBLOCK
		311	# define MAP_NONBLOCK 0
		312	#endif
46		313
47	/* buffer size for various temporary buffers */	314	#ifndef makedev
48	#define AIO_BUFSIZE 65536	315	# define makedev(maj,min) (((maj) << 8) | (min))
		316	#endif
		317	#ifndef major
		318	# define major(dev) ((dev) >> 8)
		319	#endif
		320	#ifndef minor
		321	# define minor(dev) ((dev) & 0xff)
		322	#endif
49		323
50	#define dBUF \	324	#ifndef PAGESIZE
51	char *aio_buf; \	325	# define PAGESIZE sysconf (_SC_PAGESIZE)
52	LOCK (wrklock); \	326	#endif
53	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
54	UNLOCK (wrklock); \
55	if (!aio_buf) \
56	return -1;
57
58	typedef SV SV8; /* byte-sv, used for argument-checking */
59		327
60	enum {	328	enum {
61	REQ_QUIT,	329	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
62	REQ_OPEN, REQ_CLOSE,
63	REQ_READ, REQ_WRITE, REQ_READAHEAD,
64	REQ_SENDFILE,
65	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
66	REQ_FSYNC, REQ_FDATASYNC,
67	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
68	REQ_MKNOD, REQ_READDIR,
69	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
70	REQ_GROUP, REQ_NOP,
71	REQ_BUSY,
72	};	330	};
73		331
74	#define AIO_REQ_KLASS "IO::AIO::REQ"
75	#define AIO_GRP_KLASS "IO::AIO::GRP"
76
77	typedef struct aio_cb
78	{
79	struct aio_cb *volatile next;
80
81	SV *callback, *fh;
82	SV *sv1, *sv2;
83	void *ptr1, *ptr2;
84	off_t offs;
85	size_t size;
86	ssize_t result;
87
88	STRLEN stroffset;
89	int type;
90	int int1, int2;
91	int errorno;
92	mode_t mode; /* open */
93
94	unsigned char flags;
95	unsigned char pri;
96
97	SV *self; /* the perl counterpart of this request, if any */
98	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
99	} aio_cb;
100
101	enum {
102	FLAG_CANCELLED = 0x01, /* request was cancelled */
103	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
104	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
105	};
106
107	typedef aio_cb *aio_req;	332	typedef eio_req *aio_req;
108	typedef aio_cb *aio_req_ornot;	333	typedef eio_req *aio_req_ornot;
109		334
110	enum {	335	static SV *on_next_submit;
111	PRI_MIN = -4,	336	static int next_pri = EIO_PRI_DEFAULT;
112	PRI_MAX = 4,	337	static int max_outstanding;
113		338
114	DEFAULT_PRI = 0,	339	static s_epipe respipe;
115	PRI_BIAS = -PRI_MIN,
116	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
117	};
118		340
119	#define AIO_TICKS ((1000000 + 1023) >> 10)
120
121	static unsigned int max_poll_time = 0;
122	static unsigned int max_poll_reqs = 0;
123
124	/* calculcate time difference in ~1/AIO_TICKS of a second */
125	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
126	{
127	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
128	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
129	}
130
131	static thread_t main_tid;
132	static int main_sig;
133	static int block_sig_level;
134
135	void block_sig ()
136	{
137	sigset_t ss;
138
139	if (block_sig_level++)
140	return;
141
142	if (!main_sig)
143	return;
144
145	sigemptyset (&ss);
146	sigaddset (&ss, main_sig);
147	pthread_sigmask (SIG_BLOCK, &ss, 0);
148	}
149
150	void unblock_sig ()
151	{
152	sigset_t ss;
153
154	if (--block_sig_level)
155	return;
156
157	if (!main_sig)
158	return;
159
160	sigemptyset (&ss);
161	sigaddset (&ss, main_sig);
162	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
163	}
164
165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
167	static unsigned int started, idle, wanted;
168
169	/* worker threads management */
170	static mutex_t wrklock = MUTEX_INIT;
171
172	typedef struct worker {
173	/* locked by wrklock */
174	struct worker *prev, *next;
175
176	thread_t tid;
177
178	/* locked by reslock, reqlock or wrklock */
179	aio_req req; /* currently processed request */
180	void *dbuf;
181	DIR *dirp;
182	} worker;
183
184	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
185
186	static void worker_clear (worker *wrk)
187	{
188	if (wrk->dirp)
189	{
190	closedir (wrk->dirp);
191	wrk->dirp = 0;
192	}
193
194	if (wrk->dbuf)
195	{
196	free (wrk->dbuf);
197	wrk->dbuf = 0;
198	}
199	}
200
201	static void worker_free (worker *wrk)
202	{
203	wrk->next->prev = wrk->prev;
204	wrk->prev->next = wrk->next;
205
206	free (wrk);
207	}
208
209	static volatile unsigned int nreqs, nready, npending;
210	static volatile unsigned int max_idle = 4;
211	static volatile unsigned int max_outstanding = 0xffffffff;
212	static int respipe [2];
213
214	static mutex_t reslock = MUTEX_INIT;
215	static mutex_t reqlock = MUTEX_INIT;
216	static cond_t reqwait = COND_INIT;
217
218	#if WORDACCESS_UNSAFE
219
220	static unsigned int get_nready ()
221	{
222	unsigned int retval;
223
224	LOCK (reqlock);
225	retval = nready;
226	UNLOCK (reqlock);
227
228	return retval;
229	}
230
231	static unsigned int get_npending ()
232	{
233	unsigned int retval;
234
235	LOCK (reslock);
236	retval = npending;
237	UNLOCK (reslock);
238
239	return retval;
240	}
241
242	static unsigned int get_nthreads ()
243	{
244	unsigned int retval;
245
246	LOCK (wrklock);
247	retval = started;
248	UNLOCK (wrklock);
249
250	return retval;
251	}
252
253	#else
254
255	# define get_nready() nready
256	# define get_npending() npending
257	# define get_nthreads() started
258
259	#endif
260
261	/*
262	* a somewhat faster data structure might be nice, but
263	* with 8 priorities this actually needs <20 insns
264	* per shift, the most expensive operation.
265	*/
266	typedef struct {
267	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
268	int size;
269	} reqq;
270
271	static reqq req_queue;
272	static reqq res_queue;
273
274	int reqq_push (reqq *q, aio_req req)
275	{
276	int pri = req->pri;
277	req->next = 0;
278
279	if (q->qe[pri])
280	{
281	q->qe[pri]->next = req;
282	q->qe[pri] = req;
283	}
284	else
285	q->qe[pri] = q->qs[pri] = req;
286
287	return q->size++;
288	}
289
290	aio_req reqq_shift (reqq *q)
291	{
292	int pri;
293
294	if (!q->size)
295	return 0;
296
297	--q->size;
298
299	for (pri = NUM_PRI; pri--; )
300	{
301	aio_req req = q->qs[pri];
302
303	if (req)
304	{
305	if (!(q->qs[pri] = req->next))
306	q->qe[pri] = 0;
307
308	return req;
309	}
310	}
311
312	abort ();
313	}
314
315	static int poll_cb ();
316	static int req_invoke (aio_req req);
317	static void req_free (aio_req req);	341	static void req_destroy (aio_req req);
318	static void req_cancel (aio_req req);	342	static void req_cancel (aio_req req);
319		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
320	/* must be called at most once */	356	/* must be called at most once */
321	static SV *req_sv (aio_req req, const char *klass)	357	static SV *req_sv (aio_req req, HV *stash)
322	{	358	{
323	if (!req->self)	359	if (!req->self)
324	{	360	{
325	req->self = (SV *)newHV ();	361	req->self = (SV *)newHV ();
326	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	362	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
327	}	363	}
328		364
329	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	365	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
330	}	366	}
331		367
332	static aio_req SvAIO_REQ (SV *sv)	368	static aio_req SvAIO_REQ (SV *sv)
333	{	369	{
334	MAGIC *mg;	370	MAGIC *mg;
335		371
336	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")))
337	croak ("object of class " AIO_REQ_KLASS " expected");	376	croak ("object of class IO::AIO::REQ expected");
338		377
339	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	378	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
340		379
341	return mg ? (aio_req)mg->mg_ptr : 0;	380	return mg ? (aio_req)mg->mg_ptr : 0;
342	}	381	}
343		382
344	static void aio_grp_feed (aio_req grp)	383	static void aio_grp_feed (aio_req grp)
345	{	384	{
346	block_sig ();	385	if (grp->sv2 && SvOK (grp->sv2))
347
348	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
349	{	386	{
350	int old_len = grp->size;
351
352	if (grp->sv2 && SvOK (grp->sv2))
353	{
354	dSP;	387	dSP;
355		388
356	ENTER;	389	ENTER;
357	SAVETMPS;	390	SAVETMPS;
358	PUSHMARK (SP);	391	PUSHMARK (SP);
359	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	392	XPUSHs (req_sv (grp, aio_grp_stash));
360	PUTBACK;	393	PUTBACK;
361	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	394	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
362	SPAGAIN;	395	SPAGAIN;
363	FREETMPS;	396	FREETMPS;
364	LEAVE;	397	LEAVE;
365	}
366
367	/* stop if no progress has been made */
368	if (old_len == grp->size)
369	{
370	SvREFCNT_dec (grp->sv2);
371	grp->sv2 = 0;
372	break;
373	}
374	}	398	}
375
376	unblock_sig ();
377	}	399	}
378		400
379	static void aio_grp_dec (aio_req grp)	401	static void req_submit (eio_req *req)
380	{	402	{
381	--grp->size;	403	eio_submit (req);
382		404
383	/* call feeder, if applicable */	405	if (expect_false (on_next_submit))
384	aio_grp_feed (grp);
385
386	/* finish, if done */
387	if (!grp->size && grp->int1)
388	{	406	{
389	block_sig ();	407	dSP;
		408	SV *cb = sv_2mortal (on_next_submit);
390		409
391	if (!req_invoke (grp))	410	on_next_submit = 0;
392	{
393	req_free (grp);
394	unblock_sig ();
395	croak (0);
396	}
397		411
398	req_free (grp);	412	PUSHMARK (SP);
399	unblock_sig ();	413	PUTBACK;
		414	call_sv (cb, G_DISCARD | G_EVAL);
400	}	415	}
401	}	416	}
402		417
403	static int req_invoke (aio_req req)	418	static int req_invoke (eio_req *req)
404	{	419	{
405	dSP;
406
407	if (req->flags & FLAG_SV1_RO_OFF)	420	if (req->flags & FLAG_SV2_RO_OFF)
408	SvREADONLY_off (req->sv1);	421	SvREADONLY_off (req->sv2);
409		422
410	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	423	if (!EIO_CANCELLED (req) && req->callback)
411	{	424	{
		425	dSP;
		426	static SV *sv_result_cache; /* caches the result integer SV */
		427	SV *sv_result;
		428
412	ENTER;	429	ENTER;
413	SAVETMPS;	430	SAVETMPS;
414	PUSHMARK (SP);	431	PUSHMARK (SP);
415	EXTEND (SP, 1);	432	EXTEND (SP, 1);
416		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
417	switch (req->type)	447	switch (req->type)
418	{	448	{
419	case REQ_READDIR:	449	case EIO_READDIR:
420	{	450	{
421	SV *rv = &PL_sv_undef;	451	SV *rv = &PL_sv_undef;
422		452
423	if (req->result >= 0)	453	if (req->result >= 0)
424	{	454	{
425	int i;	455	int i;
426	char *buf = req->ptr2;	456	char *names = (char *)req->ptr2;
		457	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
427	AV *av = newAV ();	458	AV *av = newAV ();
428		459
429	av_extend (av, req->result - 1);	460	av_extend (av, req->result - 1);
430		461
431	for (i = 0; i < req->result; ++i)	462	for (i = 0; i < req->result; ++i)
432	{	463	{
433	SV *sv = newSVpv (buf, 0);	464	if (req->int1 & EIO_READDIR_DENTS)
		465	{
		466	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
434		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
435	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);
436	buf += SvCUR (sv) + 1;	496	names += SvCUR (name) + 1;
		497	}
437	}	498	}
438		499
439	rv = sv_2mortal (newRV_noinc ((SV *)av));	500	rv = sv_2mortal (newRV_noinc ((SV *)av));
440	}	501	}
441		502
442	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))));
443	}	507	}
444	break;	508	break;
445		509
446	case REQ_OPEN:	510	case EIO_OPEN:
447	{	511	{
448	/* convert fd to fh */	512	/* convert fd to fh */
449	SV *fh;	513	SV *fh = &PL_sv_undef;
450		514
451	PUSHs (sv_2mortal (newSViv (req->result)));	515	if (req->result >= 0)
452	PUTBACK;	516	{
453	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	517	GV *gv = (GV *)sv_newmortal ();
454	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);
455		524
456	fh = POPs;	525	symlen = snprintf (
457	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
458	XPUSHs (fh);	537	PUSHs (fh);
459	}	538	}
460	break;	539	break;
461		540
		541	case EIO_STATVFS:
		542	case EIO_FSTATVFS:
		543	{
		544	SV *rv = &PL_sv_undef;
		545
		546	#ifndef _WIN32
		547	if (req->result >= 0)
		548	{
		549	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		550	HV *hv = newHV ();
		551
		552	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		553
		554	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		555	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		556	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		557	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		558	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		559	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		560	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		561	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		562	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		563	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		564	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		565	}
		566	#endif
		567
		568	PUSHs (rv);
		569	}
		570
		571	break;
		572
462	case REQ_GROUP:	573	case EIO_GROUP:
463	req->int1 = 2; /* mark group as finished */	574	req->int1 = 2; /* mark group as finished */
464		575
465	if (req->sv1)	576	if (req->sv1)
466	{	577	{
467	int i;	578	int i;
…		…
471	for (i = 0; i <= AvFILL (av); ++i)	582	for (i = 0; i <= AvFILL (av); ++i)
472	PUSHs (*av_fetch (av, i, 0));	583	PUSHs (*av_fetch (av, i, 0));
473	}	584	}
474	break;	585	break;
475		586
476	case REQ_NOP:	587	case EIO_NOP:
477	case REQ_BUSY:	588	case EIO_BUSY:
478	break;	589	break;
479		590
480	case REQ_READLINK:	591	case EIO_READLINK:
		592	case EIO_REALPATH:
481	if (req->result > 0)	593	if (req->result > 0)
482	{	594	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
483	SvCUR_set (req->sv1, req->result);
484	*SvEND (req->sv1) = 0;
485	PUSHs (req->sv1);
486	}
487	break;	595	break;
488		596
489	case REQ_STAT:	597	case EIO_STAT:
490	case REQ_LSTAT:	598	case EIO_LSTAT:
491	case REQ_FSTAT:	599	case EIO_FSTAT:
492	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	600	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
493	PL_laststatval = req->result;	601	PL_laststatval = req->result;
		602	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
494	PL_statcache = *(Stat_t *)(req->ptr2);	603	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
495	PUSHs (sv_2mortal (newSViv (req->result)));	604	PUSHs (sv_result);
496	break;	605	break;
497		606
498	case REQ_READ:	607	case EIO_READ:
		608	{
499	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	609	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
500	*SvEND (req->sv1) = 0;	610	*SvEND (req->sv2) = 0;
501	PUSHs (sv_2mortal (newSViv (req->result)));	611	SvPOK_only (req->sv2);
		612	SvSETMAGIC (req->sv2);
		613	PUSHs (sv_result);
		614	}
502	break;	615	break;
503		616
		617	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		618	if (req->result > 0)
		619	SvIV_set (sv_result, 0);
		620	/* FALLTHROUGH */
		621
504	default:	622	default:
505	PUSHs (sv_2mortal (newSViv (req->result)));	623	PUSHs (sv_result);
506	break;	624	break;
507	}	625	}
508		626
509	errno = req->errorno;	627	errno = req->errorno;
510		628
511	PUTBACK;	629	PUTBACK;
512	call_sv (req->callback, G_VOID | G_EVAL);	630	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
513	SPAGAIN;	631	SPAGAIN;
		632
		633	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		634	SvREFCNT_dec (sv_result);
		635	else
		636	sv_result_cache = sv_result;
514		637
515	FREETMPS;	638	FREETMPS;
516	LEAVE;	639	LEAVE;
		640
		641	PUTBACK;
517	}	642	}
518		643
519	if (req->grp)
520	{
521	aio_req grp = req->grp;
522
523	/* unlink request */
524	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
525	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
526
527	if (grp->grp_first == req)
528	grp->grp_first = req->grp_next;
529
530	aio_grp_dec (grp);
531	}
532
533	return !SvTRUE (ERRSV);	644	return !!SvTRUE (ERRSV);
534	}	645	}
535		646
536	static void req_free (aio_req req)	647	static void req_destroy (aio_req req)
537	{	648	{
538	if (req->self)	649	if (req->self)
539	{	650	{
540	sv_unmagic (req->self, PERL_MAGIC_ext);	651	sv_unmagic (req->self, PERL_MAGIC_ext);
541	SvREFCNT_dec (req->self);	652	SvREFCNT_dec (req->self);
542	}	653	}
543		654
544	SvREFCNT_dec (req->fh);
545	SvREFCNT_dec (req->sv1);	655	SvREFCNT_dec (req->sv1);
546	SvREFCNT_dec (req->sv2);	656	SvREFCNT_dec (req->sv2);
547	SvREFCNT_dec (req->callback);	657	SvREFCNT_dec (req->callback);
548		658
549	if (req->flags & FLAG_PTR2_FREE)
550	free (req->ptr2);
551
552	Safefree (req);	659	Safefree (req);
553	}	660	}
554		661
555	static void req_cancel_subs (aio_req grp)	662	static void req_cancel_subs (aio_req grp)
556	{	663	{
557	aio_req sub;
558
559	if (grp->type != REQ_GROUP)	664	if (grp->type != EIO_GROUP)
560	return;	665	return;
561		666
562	SvREFCNT_dec (grp->sv2);	667	SvREFCNT_dec (grp->sv2);
563	grp->sv2 = 0;	668	grp->sv2 = 0;
564		669
565	for (sub = grp->grp_first; sub; sub = sub->grp_next)	670	eio_grp_cancel (grp);
566	req_cancel (sub);
567	}	671	}
568		672
569	static void req_cancel (aio_req req)	673	static void create_respipe (void)
570	{	674	{
571	req->flags |= FLAG_CANCELLED;	675	if (s_epipe_renew (&respipe))
572		676	croak ("IO::AIO: unable to initialize result pipe");
573	req_cancel_subs (req);
574	}	677	}
575		678
576	static void *aio_proc(void *arg);
577
578	static void start_thread (void)
579	{
580	worker *wrk = calloc (1, sizeof (worker));
581
582	if (!wrk)
583	croak ("unable to allocate worker thread data");
584
585	LOCK (wrklock);
586
587	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
588	{
589	wrk->prev = &wrk_first;
590	wrk->next = wrk_first.next;
591	wrk_first.next->prev = wrk;
592	wrk_first.next = wrk;
593	++started;
594	}
595	else
596	free (wrk);
597
598	UNLOCK (wrklock);
599	}
600
601	static void maybe_start_thread ()
602	{
603	if (get_nthreads () >= wanted)
604	return;
605
606	/* todo: maybe use idle here, but might be less exact */
607	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
608	return;
609
610	start_thread ();
611	}
612
613	static void req_send (aio_req req)
614	{
615	block_sig ();
616
617	++nreqs;
618
619	LOCK (reqlock);
620	++nready;
621	reqq_push (&req_queue, req);
622	COND_SIGNAL (reqwait);
623	UNLOCK (reqlock);
624
625	unblock_sig ();
626
627	maybe_start_thread ();
628	}
629
630	static void end_thread (void)
631	{
632	aio_req req;
633
634	Newz (0, req, 1, aio_cb);
635
636	req->type = REQ_QUIT;
637	req->pri = PRI_MAX + PRI_BIAS;
638
639	LOCK (reqlock);
640	reqq_push (&req_queue, req);
641	COND_SIGNAL (reqwait);
642	UNLOCK (reqlock);
643
644	LOCK (wrklock);
645	--started;
646	UNLOCK (wrklock);
647	}
648
649	static void set_max_idle (int nthreads)
650	{
651	if (WORDACCESS_UNSAFE) LOCK (reqlock);
652	max_idle = nthreads <= 0 ? 1 : nthreads;
653	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
654	}
655
656	static void min_parallel (int nthreads)
657	{
658	if (wanted < nthreads)
659	wanted = nthreads;
660	}
661
662	static void max_parallel (int nthreads)
663	{
664	if (wanted > nthreads)
665	wanted = nthreads;
666
667	while (started > wanted)
668	end_thread ();
669	}
670
671	static void poll_wait ()	679	static void poll_wait (void)
672	{	680	{
673	fd_set rfd;
674
675	while (nreqs)	681	while (eio_nreqs ())
676	{	682	{
677	int size;	683	int size;
678	if (WORDACCESS_UNSAFE) LOCK (reslock);	684
		685	X_LOCK (reslock);
679	size = res_queue.size;	686	size = res_queue.size;
680	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	687	X_UNLOCK (reslock);
681		688
682	if (size)	689	if (size)
683	return;	690	return;
684		691
685	maybe_start_thread ();	692	etp_maybe_start_thread ();
686		693
687	FD_ZERO(&rfd);	694	s_epipe_wait (&respipe);
688	FD_SET(respipe [0], &rfd);
689
690	select (respipe [0] + 1, &rfd, 0, 0, 0);
691	}	695	}
692	}	696	}
693		697
694	static int poll_cb ()	698	static int poll_cb (void)
695	{	699	{
696	dSP;
697	int count = 0;
698	int maxreqs = max_poll_reqs;
699	int do_croak = 0;
700	struct timeval tv_start, tv_now;
701	aio_req req;
702
703	if (max_poll_time)
704	gettimeofday (&tv_start, 0);
705
706	block_sig ();
707
708	for (;;)	700	for (;;)
709	{	701	{
710	for (;;)	702	int res = eio_poll ();
711	{
712	maybe_start_thread ();
713		703
714	LOCK (reslock);	704	if (res > 0)
715	req = reqq_shift (&res_queue);
716
717	if (req)
718	{
719	--npending;
720
721	if (!res_queue.size)
722	{
723	/* read any signals sent by the worker threads */
724	char buf [4];
725	while (read (respipe [0], buf, 4) == 4)
726	;
727	}
728	}
729
730	UNLOCK (reslock);
731
732	if (!req)
733	break;
734
735	--nreqs;
736
737	if (req->type == REQ_GROUP && req->size)
738	{
739	req->int1 = 1; /* mark request as delayed */
740	continue;
741	}
742	else
743	{
744	if (!req_invoke (req))
745	{
746	req_free (req);
747	unblock_sig ();
748	croak (0);	705	croak (0);
749	}
750		706
751	count++;	707	if (!max_outstanding || max_outstanding > eio_nreqs ())
752	}	708	return res;
753
754	req_free (req);
755
756	if (maxreqs && !--maxreqs)
757	break;
758
759	if (max_poll_time)
760	{
761	gettimeofday (&tv_now, 0);
762
763	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
764	break;
765	}
766	}
767
768	if (nreqs <= max_outstanding)
769	break;
770		709
771	poll_wait ();	710	poll_wait ();
772
773	++maxreqs;
774	}	711	}
775
776	unblock_sig ();
777	return count;
778	}	712	}
779		713
780	static void create_pipe ()	714	static void ecb_cold
		715	reinit (void)
781	{	716	{
782	if (pipe (respipe))	717	create_respipe ();
783	croak ("unable to initialize result pipe");
784		718
785	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	719	if (eio_init (want_poll, done_poll) < 0)
786	croak ("cannot set result pipe to nonblocking mode");	720	croak ("IO::AIO: unable to initialise eio library");
787
788	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
789	croak ("cannot set result pipe to nonblocking mode");
790	}	721	}
791		722
792	/*****************************************************************************/	723	/*****************************************************************************/
793	/* work around various missing functions */
794		724
795	#if !HAVE_PREADWRITE	725	#if !_POSIX_MAPPED_FILES
796	# define pread aio_pread	726	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
797	# define pwrite aio_pwrite	727	# define munmap(addr,length) (errno = ENOSYS, -1)
798
799	/*
800	* make our pread/pwrite safe against themselves, but not against
801	* normal read/write by using a mutex. slows down execution a lot,
802	* but that's your problem, not mine.
803	*/
804	static mutex_t preadwritelock = MUTEX_INIT;
805
806	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
807	{
808	ssize_t res;
809	off_t ooffset;
810
811	LOCK (preadwritelock);
812	ooffset = lseek (fd, 0, SEEK_CUR);
813	lseek (fd, offset, SEEK_SET);
814	res = read (fd, buf, count);
815	lseek (fd, ooffset, SEEK_SET);
816	UNLOCK (preadwritelock);
817
818	return res;
819	}
820
821	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
822	{
823	ssize_t res;
824	off_t ooffset;
825
826	LOCK (preadwritelock);
827	ooffset = lseek (fd, 0, SEEK_CUR);
828	lseek (fd, offset, SEEK_SET);
829	res = write (fd, buf, count);
830	lseek (fd, offset, SEEK_SET);
831	UNLOCK (preadwritelock);
832
833	return res;
834	}
835	#endif
836
837	#if !HAVE_FDATASYNC
838	# define fdatasync fsync
839	#endif
840
841	#if !HAVE_READAHEAD
842	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
843
844	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
845	{
846	dBUF;
847
848	while (count > 0)
849	{
850	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
851
852	pread (fd, aio_buf, len, offset);
853	offset += len;
854	count -= len;
855	}
856
857	errno = 0;
858	}
859
860	#endif
861
862	#if !HAVE_READDIR_R
863	# define readdir_r aio_readdir_r
864
865	static mutex_t readdirlock = MUTEX_INIT;
866
867	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
868	{
869	struct dirent *e;
870	int errorno;
871
872	LOCK (readdirlock);
873
874	e = readdir (dirp);
875	errorno = errno;
876
877	if (e)
878	{
879	*res = ent;
880	strcpy (ent->d_name, e->d_name);
881	}
882	else
883	*res = 0;
884
885	UNLOCK (readdirlock);
886
887	errno = errorno;
888	return e ? 0 : -1;
889	}
890	#endif
891
892	/* sendfile always needs emulation */
893	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
894	{
895	ssize_t res;
896
897	if (!count)
898	return 0;
899
900	#if HAVE_SENDFILE
901	# if __linux
902	res = sendfile (ofd, ifd, &offset, count);
903
904	# elif __freebsd
905	/*
906	* Of course, the freebsd sendfile is a dire hack with no thoughts
907	* wasted on making it similar to other I/O functions.
908	*/
909	{
910	off_t sbytes;
911	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
912
913	if (res < 0 && sbytes)
914	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
915	res = sbytes;
916	}
917
918	# elif __hpux
919	res = sendfile (ofd, ifd, offset, count, 0, 0);
920
921	# elif __solaris
922	{
923	struct sendfilevec vec;
924	size_t sbytes;
925
926	vec.sfv_fd = ifd;
927	vec.sfv_flag = 0;
928	vec.sfv_off = offset;
929	vec.sfv_len = count;
930
931	res = sendfilev (ofd, &vec, 1, &sbytes);
932
933	if (res < 0 && sbytes)
934	res = sbytes;
935	}
936
937	# endif	728	#endif
938	#else
939	res = -1;
940	errno = ENOSYS;
941	#endif
942		729
943	if (res < 0	730	#if !_POSIX_MEMORY_PROTECTION
944	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	731	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
945	#if __solaris	732	# define PROT_NONE 0
946	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	733	# define PROT_WRITE 0
		734	# define MAP_PRIVATE 0
		735	# define MAP_SHARED 0
		736	# define MAP_FIXED 0
947	#endif	737	#endif
948	)
949	)
950	{
951	/* emulate sendfile. this is a major pain in the ass */
952	dBUF;
953		738
954	res = 0;	739	#define MMAP_MAGIC PERL_MAGIC_ext
955		740
956	while (count)	741	static int mmap_free (pTHX_ SV *sv, MAGIC *mg)
957	{	742	{
958	ssize_t cnt;	743	int old_errno = errno;
959		744	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
960	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	745	errno = old_errno;
961		746
962	if (cnt <= 0)	747	mg->mg_obj = 0; /* just in case */
963	{
964	if (cnt && !res) res = -1;
965	break;
966	}
967		748
968	cnt = write (ofd, aio_buf, cnt);	749	SvREADONLY_off (sv);
969		750
970	if (cnt <= 0)	751	if (SvPVX (sv) != mg->mg_ptr)
971	{	752	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
972	if (cnt && !res) res = -1;
973	break;
974	}
975		753
976	offset += cnt;	754	SvCUR_set (sv, 0);
977	res += cnt;	755	SvPVX (sv) = 0;
978	count -= cnt;	756	SvOK_off (sv);
979	}
980	}
981		757
982	return res;	758	return 0;
983	}	759	}
984		760
985	/* read a full directory */	761	static MGVTBL mmap_vtbl = {
986	static void scandir_ (aio_req req, worker *self)	762	0, 0, 0, 0, mmap_free
987	{	763	};
988	DIR *dirp;
989	union
990	{
991	struct dirent d;
992	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
993	} *u;
994	struct dirent *entp;
995	char *name, *names;
996	int memlen = 4096;
997	int memofs = 0;
998	int res = 0;
999	int errorno;
1000
1001	LOCK (wrklock);
1002	self->dirp = dirp = opendir (req->ptr1);
1003	self->dbuf = u = malloc (sizeof (*u));
1004	req->flags |= FLAG_PTR2_FREE;
1005	req->ptr2 = names = malloc (memlen);
1006	UNLOCK (wrklock);
1007
1008	if (dirp && u && names)
1009	for (;;)
1010	{
1011	errno = 0;
1012	readdir_r (dirp, &u->d, &entp);
1013
1014	if (!entp)
1015	break;
1016
1017	name = entp->d_name;
1018
1019	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1020	{
1021	int len = strlen (name) + 1;
1022
1023	res++;
1024
1025	while (memofs + len > memlen)
1026	{
1027	memlen *= 2;
1028	LOCK (wrklock);
1029	req->ptr2 = names = realloc (names, memlen);
1030	UNLOCK (wrklock);
1031
1032	if (!names)
1033	break;
1034	}
1035
1036	memcpy (names + memofs, name, len);
1037	memofs += len;
1038	}
1039	}
1040
1041	if (errno)
1042	res = -1;
1043
1044	req->result = res;
1045	}
1046		764
1047	/*****************************************************************************/	765	/*****************************************************************************/
1048		766
1049	static void *aio_proc (void *thr_arg)	767	static SV * get_cb (SV *cb_sv)
1050	{	768	{
1051	aio_req req;	769	SvGETMAGIC (cb_sv);
1052	struct timespec ts;	770	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1053	worker *self = (worker *)thr_arg;
1054
1055	/* try to distribute timeouts somewhat evenly */
1056	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1057	* (1000000000UL / 1024UL);
1058
1059	for (;;)
1060	{
1061	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1062
1063	LOCK (reqlock);
1064
1065	for (;;)
1066	{
1067	self->req = req = reqq_shift (&req_queue);
1068
1069	if (req)
1070	break;
1071
1072	++idle;
1073
1074	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1075	== ETIMEDOUT)
1076	{
1077	if (idle > max_idle)
1078	{
1079	--idle;
1080	UNLOCK (reqlock);
1081	LOCK (wrklock);
1082	--started;
1083	UNLOCK (wrklock);
1084	goto quit;
1085	}
1086
1087	/* we are allowed to idle, so do so without any timeout */
1088	COND_WAIT (reqwait, reqlock);
1089	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1090	}
1091
1092	--idle;
1093	}
1094
1095	--nready;
1096
1097	UNLOCK (reqlock);
1098
1099	errno = 0; /* strictly unnecessary */
1100
1101	if (!(req->flags & FLAG_CANCELLED))
1102	switch (req->type)
1103	{
1104	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1105	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1106
1107	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1108	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1109
1110	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1111	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1112	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1113
1114	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1115	case REQ_CLOSE: req->result = close (req->int1); break;
1116	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1117	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1118	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1119	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1120	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1121	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1122	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1123	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1124
1125	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1126	case REQ_FSYNC: req->result = fsync (req->int1); break;
1127	case REQ_READDIR: scandir_ (req, self); break;
1128
1129	case REQ_BUSY:
1130	{
1131	struct timeval tv;
1132
1133	tv.tv_sec = req->int1;
1134	tv.tv_usec = req->int2;
1135
1136	req->result = select (0, 0, 0, 0, &tv);
1137	}
1138
1139	case REQ_GROUP:
1140	case REQ_NOP:
1141	break;
1142
1143	case REQ_QUIT:
1144	goto quit;
1145
1146	default:
1147	req->result = ENOSYS;
1148	break;
1149	}
1150
1151	req->errorno = errno;
1152
1153	LOCK (reslock);
1154
1155	++npending;
1156
1157	if (!reqq_push (&res_queue, req))
1158	{
1159	/* write a dummy byte to the pipe so fh becomes ready */
1160	write (respipe [1], &respipe, 1);
1161
1162	/* optionally signal the main thread asynchronously */
1163	if (main_sig)
1164	pthread_kill (main_tid, main_sig);
1165	}
1166
1167	self->req = 0;
1168	worker_clear (self);
1169
1170	UNLOCK (reslock);
1171	}
1172
1173	quit:
1174	LOCK (wrklock);
1175	worker_free (self);
1176	UNLOCK (wrklock);
1177
1178	return 0;
1179	}
1180
1181	/*****************************************************************************/
1182
1183	static void atfork_prepare (void)
1184	{
1185	LOCK (wrklock);
1186	LOCK (reqlock);
1187	LOCK (reslock);
1188	#if !HAVE_PREADWRITE
1189	LOCK (preadwritelock);
1190	#endif
1191	#if !HAVE_READDIR_R
1192	LOCK (readdirlock);
1193	#endif
1194	}
1195
1196	static void atfork_parent (void)
1197	{
1198	#if !HAVE_READDIR_R
1199	UNLOCK (readdirlock);
1200	#endif
1201	#if !HAVE_PREADWRITE
1202	UNLOCK (preadwritelock);
1203	#endif
1204	UNLOCK (reslock);
1205	UNLOCK (reqlock);
1206	UNLOCK (wrklock);
1207	}
1208
1209	static void atfork_child (void)
1210	{
1211	aio_req prv;
1212
1213	while (prv = reqq_shift (&req_queue))
1214	req_free (prv);
1215
1216	while (prv = reqq_shift (&res_queue))
1217	req_free (prv);
1218
1219	while (wrk_first.next != &wrk_first)
1220	{
1221	worker *wrk = wrk_first.next;
1222
1223	if (wrk->req)
1224	req_free (wrk->req);
1225
1226	worker_clear (wrk);
1227	worker_free (wrk);
1228	}
1229
1230	started = 0;
1231	idle = 0;
1232	nreqs = 0;
1233	nready = 0;
1234	npending = 0;
1235
1236	close (respipe [0]);
1237	close (respipe [1]);
1238	create_pipe ();
1239
1240	atfork_parent ();
1241	}	771	}
1242		772
1243	#define dREQ \	773	#define dREQ \
		774	SV *cb_cv; \
1244	aio_req req; \	775	aio_req req; \
1245	int req_pri = next_pri; \	776	int req_pri = next_pri; \
1246	next_pri = DEFAULT_PRI + PRI_BIAS; \	777	next_pri = EIO_PRI_DEFAULT; \
1247	\	778	\
1248	if (SvOK (callback) && !SvROK (callback)) \	779	cb_cv = get_cb (callback); \
1249	croak ("callback must be undef or of reference type"); \
1250	\	780	\
1251	Newz (0, req, 1, aio_cb); \	781	Newz (0, req, 1, eio_req); \
1252	if (!req) \	782	if (!req) \
1253	croak ("out of memory during aio_req allocation"); \	783	croak ("out of memory during eio_req allocation"); \
1254	\	784	\
1255	req->callback = newSVsv (callback); \	785	req->callback = SvREFCNT_inc (cb_cv); \
1256	req->pri = req_pri	786	req->pri = req_pri
1257		787
1258	#define REQ_SEND \	788	#define REQ_SEND \
		789	PUTBACK; \
1259	req_send (req); \	790	req_submit (req); \
		791	SPAGAIN; \
1260	\	792	\
1261	if (GIMME_V != G_VOID) \	793	if (GIMME_V != G_VOID) \
1262	XPUSHs (req_sv (req, AIO_REQ_KLASS));	794	XPUSHs (req_sv (req, aio_req_stash));
1263		795
1264	MODULE = IO::AIO PACKAGE = IO::AIO	796	MODULE = IO::AIO PACKAGE = IO::AIO
1265		797
1266	PROTOTYPES: ENABLE	798	PROTOTYPES: ENABLE
1267		799
1268	BOOT:	800	BOOT:
1269	{	801	{
		802	static const struct {
		803	const char *name;
		804	IV iv;
		805	} *civ, const_iv[] = {
		806	# define const_niv(name, value) { # name, (IV) value },
		807	# define const_iv(name) { # name, (IV) name },
		808	# define const_eio(name) { # name, (IV) EIO_ ## name },
		809	const_iv (EXDEV)
		810	const_iv (ENOSYS)
		811	const_iv (O_RDONLY)
		812	const_iv (O_WRONLY)
		813	const_iv (O_RDWR)
		814	const_iv (O_CREAT)
		815	const_iv (O_TRUNC)
		816	const_iv (O_EXCL)
		817	const_iv (O_APPEND)
		818
		819	const_iv (O_ASYNC)
		820	const_iv (O_DIRECT)
		821	const_iv (O_NOATIME)
		822
		823	const_iv (O_CLOEXEC)
		824	const_iv (O_NOCTTY)
		825	const_iv (O_NOFOLLOW)
		826	const_iv (O_NONBLOCK)
		827	const_iv (O_EXEC)
		828	const_iv (O_SEARCH)
		829	const_iv (O_DIRECTORY)
		830	const_iv (O_DSYNC)
		831	const_iv (O_RSYNC)
		832	const_iv (O_SYNC)
		833	const_iv (O_TTY_INIT)
		834
		835	const_iv (S_IFIFO)
		836	const_iv (S_IFCHR)
		837	const_iv (S_IFBLK)
		838	const_iv (S_IFLNK)
		839	const_iv (S_IFREG)
		840	const_iv (S_IFDIR)
		841	const_iv (S_IFWHT)
		842	const_iv (S_IFSOCK)
		843	const_iv (S_IFMT)
		844
		845	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		846	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		847	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		848	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		849	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		850	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		851
		852	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		853	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		854	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		855	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		856	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		857
		858	const_iv (ST_RDONLY)
		859	const_iv (ST_NOSUID)
		860	const_iv (ST_NODEV)
		861	const_iv (ST_NOEXEC)
		862	const_iv (ST_SYNCHRONOUS)
		863	const_iv (ST_MANDLOCK)
		864	const_iv (ST_WRITE)
		865	const_iv (ST_APPEND)
		866	const_iv (ST_IMMUTABLE)
		867	const_iv (ST_NOATIME)
		868	const_iv (ST_NODIRATIME)
		869	const_iv (ST_RELATIME)
		870
		871	const_iv (PROT_NONE)
		872	const_iv (PROT_EXEC)
		873	const_iv (PROT_READ)
		874	const_iv (PROT_WRITE)
		875
		876	/*const_iv (MAP_FIXED)*/
		877	const_iv (MAP_PRIVATE)
		878	const_iv (MAP_SHARED)
		879	const_iv (MAP_ANONYMOUS)
		880
		881	/* linuxish */
		882	const_iv (MAP_HUGETLB)
		883	const_iv (MAP_LOCKED)
		884	const_iv (MAP_NORESERVE)
		885	const_iv (MAP_POPULATE)
		886	const_iv (MAP_NONBLOCK)
		887
		888	const_eio (MCL_FUTURE)
		889	const_eio (MCL_CURRENT)
		890
		891	const_eio (MS_ASYNC)
		892	const_eio (MS_INVALIDATE)
		893	const_eio (MS_SYNC)
		894
		895	const_eio (MT_MODIFY)
		896
		897	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		898	const_eio (SYNC_FILE_RANGE_WRITE)
		899	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		900
		901	const_eio (FALLOC_FL_KEEP_SIZE)
		902
		903	const_eio (READDIR_DENTS)
		904	const_eio (READDIR_DIRS_FIRST)
		905	const_eio (READDIR_STAT_ORDER)
		906	const_eio (READDIR_FOUND_UNKNOWN)
		907
		908	const_eio (DT_UNKNOWN)
		909	const_eio (DT_FIFO)
		910	const_eio (DT_CHR)
		911	const_eio (DT_DIR)
		912	const_eio (DT_BLK)
		913	const_eio (DT_REG)
		914	const_eio (DT_LNK)
		915	const_eio (DT_SOCK)
		916	const_eio (DT_WHT)
		917	};
		918
1270	HV *stash = gv_stashpv ("IO::AIO", 1);	919	aio_stash = gv_stashpv ("IO::AIO" , 1);
		920	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		921	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1271		922
1272	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	923	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1273	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	924	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1274	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1275	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1276	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1277	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1278	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1279		925
1280	create_pipe ();	926	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1281	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1282	}
1283		927
		928	reinit ();
		929	}
		930
1284	void	931	void
		932	reinit ()
		933	PROTOTYPE:
		934
		935	void
1285	max_poll_reqs (int nreqs)	936	max_poll_reqs (unsigned int nreqs)
1286	PROTOTYPE: $	937	PROTOTYPE: $
1287	CODE:	938	CODE:
1288	max_poll_reqs = nreqs;	939	eio_set_max_poll_reqs (nreqs);
1289		940
1290	void	941	void
1291	max_poll_time (double nseconds)	942	max_poll_time (double nseconds)
1292	PROTOTYPE: $	943	PROTOTYPE: $
1293	CODE:	944	CODE:
1294	max_poll_time = nseconds * AIO_TICKS;	945	eio_set_max_poll_time (nseconds);
1295		946
1296	void	947	void
1297	min_parallel (int nthreads)	948	min_parallel (unsigned int nthreads)
1298	PROTOTYPE: $
1299
1300	void
1301	max_parallel (int nthreads)
1302	PROTOTYPE: $
1303
1304	void
1305	max_idle (int nthreads)
1306	PROTOTYPE: $	949	PROTOTYPE: $
1307	CODE:	950	CODE:
1308	set_max_idle (nthreads);	951	eio_set_min_parallel (nthreads);
1309		952
1310	int	953	void
1311	max_outstanding (int maxreqs)	954	max_parallel (unsigned int nthreads)
1312	PROTOTYPE: $	955	PROTOTYPE: $
1313	CODE:	956	CODE:
1314	RETVAL = max_outstanding;	957	eio_set_max_parallel (nthreads);
		958
		959	void
		960	max_idle (unsigned int nthreads)
		961	PROTOTYPE: $
		962	CODE:
		963	eio_set_max_idle (nthreads);
		964
		965	void
		966	idle_timeout (unsigned int seconds)
		967	PROTOTYPE: $
		968	CODE:
		969	eio_set_idle_timeout (seconds);
		970
		971	void
		972	max_outstanding (unsigned int maxreqs)
		973	PROTOTYPE: $
		974	CODE:
1315	max_outstanding = maxreqs;	975	max_outstanding = maxreqs;
1316	OUTPUT:
1317	RETVAL
1318		976
1319	void	977	void
1320	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	978	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1321	SV8 * pathname
1322	int flags
1323	int mode
1324	SV * callback
1325	PROTOTYPE: $$$;$
1326	PPCODE:	979	PPCODE:
1327	{	980	{
1328	dREQ;	981	dREQ;
1329		982
1330	req->type = REQ_OPEN;	983	req->type = EIO_OPEN;
1331	req->sv1 = newSVsv (pathname);	984	req->sv1 = newSVsv (pathname);
1332	req->ptr1 = SvPVbyte_nolen (req->sv1);	985	req->ptr1 = SvPVbyte_nolen (req->sv1);
1333	req->int1 = flags;	986	req->int1 = flags;
1334	req->mode = mode;	987	req->int2 = mode;
1335		988
1336	REQ_SEND;	989	REQ_SEND;
1337	}	990	}
1338		991
1339	void	992	void
1340	aio_close (fh,callback=&PL_sv_undef)	993	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1341	SV * fh
1342	SV * callback
1343	PROTOTYPE: $;$
1344	ALIAS:	994	ALIAS:
1345	aio_close = REQ_CLOSE
1346	aio_fsync = REQ_FSYNC	995	aio_fsync = EIO_FSYNC
1347	aio_fdatasync = REQ_FDATASYNC	996	aio_fdatasync = EIO_FDATASYNC
		997	aio_syncfs = EIO_SYNCFS
1348	PPCODE:	998	PPCODE:
1349	{	999	{
		1000	int fd = s_fileno_croak (fh, 0);
1350	dREQ;	1001	dREQ;
1351		1002
1352	req->type = ix;	1003	req->type = ix;
1353	req->fh = newSVsv (fh);	1004	req->sv1 = newSVsv (fh);
1354	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1005	req->int1 = fd;
1355		1006
1356	REQ_SEND (req);	1007	REQ_SEND (req);
1357	}	1008	}
1358		1009
1359	void	1010	void
		1011	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1012	PPCODE:
		1013	{
		1014	int fd = s_fileno_croak (fh, 0);
		1015	dREQ;
		1016
		1017	req->type = EIO_SYNC_FILE_RANGE;
		1018	req->sv1 = newSVsv (fh);
		1019	req->int1 = fd;
		1020	req->offs = offset;
		1021	req->size = nbytes;
		1022	req->int2 = flags;
		1023
		1024	REQ_SEND (req);
		1025	}
		1026
		1027	void
		1028	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1029	PPCODE:
		1030	{
		1031	int fd = s_fileno_croak (fh, 0);
		1032	dREQ;
		1033
		1034	req->type = EIO_FALLOCATE;
		1035	req->sv1 = newSVsv (fh);
		1036	req->int1 = fd;
		1037	req->int2 = mode;
		1038	req->offs = offset;
		1039	req->size = len;
		1040
		1041	REQ_SEND (req);
		1042	}
		1043
		1044	void
		1045	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1046	PPCODE:
		1047	{
		1048	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1049	int fd = s_fileno_croak (fh, 0);
		1050	dREQ;
		1051
		1052	if (expect_false (close_fd < 0))
		1053	{
		1054	int pipefd [2];
		1055
		1056	if (
		1057	#ifdef _WIN32
		1058	_pipe (pipefd, 1, _O_BINARY) < 0
		1059	#else
		1060	pipe (pipefd) < 0
		1061	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1062	#endif
		1063	|| close (pipefd [1]) < 0
		1064	)
		1065	abort (); /*D*/
		1066
		1067	close_fd = pipefd [0];
		1068	}
		1069
		1070	req->type = EIO_DUP2;
		1071	req->int1 = close_fd;
		1072	req->sv2 = newSVsv (fh);
		1073	req->int2 = fd;
		1074
		1075	REQ_SEND (req);
		1076	}
		1077
		1078	void
1360	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1079	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1361	SV * fh
1362	UV offset
1363	UV length
1364	SV8 * data
1365	UV dataoffset
1366	SV * callback
1367	ALIAS:	1080	ALIAS:
1368	aio_read = REQ_READ	1081	aio_read = EIO_READ
1369	aio_write = REQ_WRITE	1082	aio_write = EIO_WRITE
1370	PROTOTYPE: $$$$$;$
1371	PPCODE:	1083	PPCODE:
1372	{	1084	{
1373	STRLEN svlen;	1085	STRLEN svlen;
		1086	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1374	char *svptr = SvPVbyte (data, svlen);	1087	char *svptr = SvPVbyte (data, svlen);
1375		1088	UV len = SvUV (length);
1376	SvUPGRADE (data, SVt_PV);
1377	SvPOK_on (data);
1378		1089
1379	if (dataoffset < 0)	1090	if (dataoffset < 0)
1380	dataoffset += svlen;	1091	dataoffset += svlen;
1381		1092
1382	if (dataoffset < 0 || dataoffset > svlen)	1093	if (dataoffset < 0 || dataoffset > svlen)
1383	croak ("data offset outside of string");	1094	croak ("dataoffset outside of data scalar");
1384		1095
1385	if (ix == REQ_WRITE)	1096	if (ix == EIO_WRITE)
1386	{	1097	{
1387	/* write: check length and adjust. */	1098	/* write: check length and adjust. */
1388	if (length < 0 || length + dataoffset > svlen)	1099	if (!SvOK (length) || len + dataoffset > svlen)
1389	length = svlen - dataoffset;	1100	len = svlen - dataoffset;
1390	}	1101	}
1391	else	1102	else
1392	{	1103	{
1393	/* read: grow scalar as necessary */	1104	/* read: check type and grow scalar as necessary */
		1105	SvUPGRADE (data, SVt_PV);
1394	svptr = SvGROW (data, length + dataoffset + 1);	1106	svptr = SvGROW (data, len + dataoffset + 1);
1395	}	1107	}
1396
1397	if (length < 0)
1398	croak ("length must not be negative");
1399		1108
1400	{	1109	{
1401	dREQ;	1110	dREQ;
1402		1111
1403	req->type = ix;	1112	req->type = ix;
1404	req->fh = newSVsv (fh);	1113	req->sv1 = newSVsv (fh);
1405	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1114	req->int1 = fd;
1406	: IoOFP (sv_2io (fh)));	1115	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1407	req->offs = offset;
1408	req->size = length;	1116	req->size = len;
1409	req->sv1 = SvREFCNT_inc (data);	1117	req->sv2 = SvREFCNT_inc (data);
1410	req->ptr1 = (char *)svptr + dataoffset;	1118	req->ptr2 = (char *)svptr + dataoffset;
1411	req->stroffset = dataoffset;	1119	req->stroffset = dataoffset;
1412		1120
1413	if (!SvREADONLY (data))	1121	if (!SvREADONLY (data))
1414	{	1122	{
1415	SvREADONLY_on (data);	1123	SvREADONLY_on (data);
1416	req->flags |= FLAG_SV1_RO_OFF;	1124	req->flags |= FLAG_SV2_RO_OFF;
1417	}	1125	}
1418		1126
1419	REQ_SEND;	1127	REQ_SEND;
1420	}	1128	}
1421	}	1129	}
1422		1130
1423	void	1131	void
1424	aio_readlink (path,callback=&PL_sv_undef)	1132	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1425	SV8 * path	1133	ALIAS:
1426	SV * callback	1134	aio_readlink = EIO_READLINK
1427	PROTOTYPE: $$;$	1135	aio_realpath = EIO_REALPATH
1428	PPCODE:	1136	PPCODE:
1429	{	1137	{
1430	SV *data;
1431	dREQ;	1138	dREQ;
1432		1139
1433	data = newSV (NAME_MAX);
1434	SvPOK_on (data);
1435
1436	req->type = REQ_READLINK;	1140	req->type = ix;
1437	req->fh = newSVsv (path);	1141	req->sv1 = newSVsv (path);
1438	req->ptr2 = SvPVbyte_nolen (req->fh);	1142	req->ptr1 = SvPVbyte_nolen (req->sv1);
1439	req->sv1 = data;
1440	req->ptr1 = SvPVbyte_nolen (data);
1441		1143
1442	REQ_SEND;	1144	REQ_SEND;
1443	}	1145	}
1444		1146
1445	void	1147	void
1446	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1148	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1447	SV * out_fh
1448	SV * in_fh
1449	UV in_offset
1450	UV length
1451	SV * callback
1452	PROTOTYPE: $$$$;$
1453	PPCODE:	1149	PPCODE:
1454	{	1150	{
		1151	int ifd = s_fileno_croak (in_fh , 0);
		1152	int ofd = s_fileno_croak (out_fh, 1);
1455	dREQ;	1153	dREQ;
1456		1154
1457	req->type = REQ_SENDFILE;	1155	req->type = EIO_SENDFILE;
1458	req->fh = newSVsv (out_fh);	1156	req->sv1 = newSVsv (out_fh);
1459	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1157	req->int1 = ofd;
1460	req->sv2 = newSVsv (in_fh);	1158	req->sv2 = newSVsv (in_fh);
1461	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1159	req->int2 = ifd;
1462	req->offs = in_offset;	1160	req->offs = in_offset;
1463	req->size = length;	1161	req->size = length;
1464		1162
1465	REQ_SEND;	1163	REQ_SEND;
1466	}	1164	}
1467		1165
1468	void	1166	void
1469	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1167	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1470	SV * fh
1471	UV offset
1472	IV length
1473	SV * callback
1474	PROTOTYPE: $$$;$
1475	PPCODE:	1168	PPCODE:
1476	{	1169	{
		1170	int fd = s_fileno_croak (fh, 0);
1477	dREQ;	1171	dREQ;
1478		1172
1479	req->type = REQ_READAHEAD;	1173	req->type = EIO_READAHEAD;
1480	req->fh = newSVsv (fh);	1174	req->sv1 = newSVsv (fh);
1481	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1175	req->int1 = fd;
1482	req->offs = offset;	1176	req->offs = offset;
1483	req->size = length;	1177	req->size = length;
1484		1178
1485	REQ_SEND;	1179	REQ_SEND;
1486	}	1180	}
1487		1181
1488	void	1182	void
1489	aio_stat (fh_or_path,callback=&PL_sv_undef)	1183	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1490	SV8 * fh_or_path
1491	SV * callback
1492	ALIAS:	1184	ALIAS:
1493	aio_stat = REQ_STAT	1185	aio_stat = EIO_STAT
1494	aio_lstat = REQ_LSTAT	1186	aio_lstat = EIO_LSTAT
		1187	aio_statvfs = EIO_STATVFS
1495	PPCODE:	1188	PPCODE:
1496	{	1189	{
1497	dREQ;	1190	dREQ;
1498		1191
1499	req->ptr2 = malloc (sizeof (Stat_t));	1192	req->sv1 = newSVsv (fh_or_path);
1500	if (!req->ptr2)
1501	{
1502	req_free (req);
1503	croak ("out of memory during aio_stat statdata allocation");
1504	}
1505		1193
1506	req->flags |= FLAG_PTR2_FREE;	1194	if (SvPOK (req->sv1))
1507
1508	if (SvPOK (fh_or_path))
1509	{	1195	{
1510	req->type = ix;	1196	req->type = ix;
1511	req->sv1 = newSVsv (fh_or_path);
1512	req->ptr1 = SvPVbyte_nolen (req->sv1);	1197	req->ptr1 = SvPVbyte_nolen (req->sv1);
1513	}	1198	}
1514	else	1199	else
1515	{	1200	{
1516	req->type = REQ_FSTAT;	1201	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1517	req->fh = newSVsv (fh_or_path);
1518	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1202	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1519	}	1203	}
1520		1204
1521	REQ_SEND;	1205	REQ_SEND;
1522	}	1206	}
1523		1207
		1208	UV
		1209	major (UV dev)
		1210	ALIAS:
		1211	minor = 1
		1212	CODE:
		1213	RETVAL = ix ? major (dev) : minor (dev);
		1214	OUTPUT:
		1215	RETVAL
		1216
		1217	UV
		1218	makedev (UV maj, UV min)
		1219	CODE:
		1220	RETVAL = makedev (maj, min);
		1221	OUTPUT:
		1222	RETVAL
		1223
1524	void	1224	void
		1225	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1226	PPCODE:
		1227	{
		1228	dREQ;
		1229
		1230	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1231	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1232	req->sv1 = newSVsv (fh_or_path);
		1233
		1234	if (SvPOK (req->sv1))
		1235	{
		1236	req->type = EIO_UTIME;
		1237	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1238	}
		1239	else
		1240	{
		1241	req->type = EIO_FUTIME;
		1242	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1243	}
		1244
		1245	REQ_SEND;
		1246	}
		1247
		1248	void
		1249	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1250	PPCODE:
		1251	{
		1252	dREQ;
		1253
		1254	req->sv1 = newSVsv (fh_or_path);
		1255	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1256
		1257	if (SvPOK (req->sv1))
		1258	{
		1259	req->type = EIO_TRUNCATE;
		1260	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1261	}
		1262	else
		1263	{
		1264	req->type = EIO_FTRUNCATE;
		1265	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1266	}
		1267
		1268	REQ_SEND;
		1269	}
		1270
		1271	void
		1272	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1273	ALIAS:
		1274	aio_chmod = EIO_CHMOD
		1275	aio_mkdir = EIO_MKDIR
		1276	PPCODE:
		1277	{
		1278	dREQ;
		1279
		1280	req->int2 = mode;
		1281	req->sv1 = newSVsv (fh_or_path);
		1282
		1283	if (SvPOK (req->sv1))
		1284	{
		1285	req->type = ix;
		1286	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1287	}
		1288	else
		1289	{
		1290	req->type = EIO_FCHMOD;
		1291	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1292	}
		1293
		1294	REQ_SEND;
		1295	}
		1296
		1297	void
		1298	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1299	PPCODE:
		1300	{
		1301	dREQ;
		1302
		1303	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1304	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1305	req->sv1 = newSVsv (fh_or_path);
		1306
		1307	if (SvPOK (req->sv1))
		1308	{
		1309	req->type = EIO_CHOWN;
		1310	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1311	}
		1312	else
		1313	{
		1314	req->type = EIO_FCHOWN;
		1315	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1316	}
		1317
		1318	REQ_SEND;
		1319	}
		1320
		1321	void
		1322	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1323	PPCODE:
		1324	{
		1325	dREQ;
		1326
		1327	req->type = EIO_READDIR;
		1328	req->sv1 = newSVsv (pathname);
		1329	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1330	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1331
		1332	if (flags & EIO_READDIR_DENTS)
		1333	req->int1 |= EIO_READDIR_CUSTOM2;
		1334
		1335	REQ_SEND;
		1336	}
		1337
		1338	void
1525	aio_unlink (pathname,callback=&PL_sv_undef)	1339	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1526	SV8 * pathname
1527	SV * callback
1528	ALIAS:	1340	ALIAS:
1529	aio_unlink = REQ_UNLINK	1341	aio_unlink = EIO_UNLINK
1530	aio_rmdir = REQ_RMDIR	1342	aio_rmdir = EIO_RMDIR
1531	aio_readdir = REQ_READDIR	1343	aio_readdir = EIO_READDIR
1532	PPCODE:	1344	PPCODE:
1533	{	1345	{
1534	dREQ;	1346	dREQ;
1535		1347
1536	req->type = ix;	1348	req->type = ix;
…		…
1539		1351
1540	REQ_SEND;	1352	REQ_SEND;
1541	}	1353	}
1542		1354
1543	void	1355	void
1544	aio_mkdir (pathname,mode,callback=&PL_sv_undef)
1545	SV8 * pathname
1546	UV mode
1547	SV * callback
1548	PPCODE:
1549	{
1550	dREQ;
1551
1552	req->type = REQ_MKDIR;
1553	req->sv1 = newSVsv (pathname);
1554	req->ptr1 = SvPVbyte_nolen (req->sv1);
1555	req->mode = mode;
1556
1557	REQ_SEND;
1558	}
1559
1560	void
1561	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1356	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1562	SV8 * oldpath
1563	SV8 * newpath
1564	SV * callback
1565	ALIAS:	1357	ALIAS:
1566	aio_link = REQ_LINK	1358	aio_link = EIO_LINK
1567	aio_symlink = REQ_SYMLINK	1359	aio_symlink = EIO_SYMLINK
1568	aio_rename = REQ_RENAME	1360	aio_rename = EIO_RENAME
1569	PPCODE:	1361	PPCODE:
1570	{	1362	{
1571	dREQ;	1363	dREQ;
1572		1364
1573	req->type = ix;	1365	req->type = ix;
1574	req->fh = newSVsv (oldpath);	1366	req->sv1 = newSVsv (oldpath);
1575	req->ptr2 = SvPVbyte_nolen (req->fh);
1576	req->sv1 = newSVsv (newpath);
1577	req->ptr1 = SvPVbyte_nolen (req->sv1);	1367	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1368	req->sv2 = newSVsv (newpath);
		1369	req->ptr2 = SvPVbyte_nolen (req->sv2);
1578		1370
1579	REQ_SEND;	1371	REQ_SEND;
1580	}	1372	}
1581		1373
1582	void	1374	void
1583	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1375	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1584	SV8 * pathname
1585	UV mode
1586	UV dev
1587	SV * callback
1588	PPCODE:	1376	PPCODE:
1589	{	1377	{
1590	dREQ;	1378	dREQ;
1591		1379
1592	req->type = REQ_MKNOD;	1380	req->type = EIO_MKNOD;
1593	req->sv1 = newSVsv (pathname);	1381	req->sv1 = newSVsv (pathname);
1594	req->ptr1 = SvPVbyte_nolen (req->sv1);	1382	req->ptr1 = SvPVbyte_nolen (req->sv1);
1595	req->mode = (mode_t)mode;	1383	req->int2 = (mode_t)mode;
1596	req->offs = dev;	1384	req->offs = dev;
1597		1385
1598	REQ_SEND;	1386	REQ_SEND;
1599	}	1387	}
1600		1388
1601	void	1389	void
		1390	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1391	ALIAS:
		1392	aio_mtouch = EIO_MTOUCH
		1393	aio_msync = EIO_MSYNC
		1394	PPCODE:
		1395	{
		1396	STRLEN svlen;
		1397	char *svptr = SvPVbyte (data, svlen);
		1398	UV len = SvUV (length);
		1399
		1400	if (offset < 0)
		1401	offset += svlen;
		1402
		1403	if (offset < 0 || offset > svlen)
		1404	croak ("offset outside of scalar");
		1405
		1406	if (!SvOK (length) || len + offset > svlen)
		1407	len = svlen - offset;
		1408
		1409	{
		1410	dREQ;
		1411
		1412	req->type = ix;
		1413	req->sv2 = SvREFCNT_inc (data);
		1414	req->ptr2 = (char *)svptr + offset;
		1415	req->size = len;
		1416	req->int1 = flags;
		1417
		1418	REQ_SEND;
		1419	}
		1420	}
		1421
		1422	void
		1423	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1424	PPCODE:
		1425	{
		1426	STRLEN svlen;
		1427	char *svptr = SvPVbyte (data, svlen);
		1428	UV len = SvUV (length);
		1429
		1430	if (offset < 0)
		1431	offset += svlen;
		1432
		1433	if (offset < 0 || offset > svlen)
		1434	croak ("offset outside of scalar");
		1435
		1436	if (!SvOK (length) || len + offset > svlen)
		1437	len = svlen - offset;
		1438
		1439	{
		1440	dREQ;
		1441
		1442	req->type = EIO_MLOCK;
		1443	req->sv2 = SvREFCNT_inc (data);
		1444	req->ptr2 = (char *)svptr + offset;
		1445	req->size = len;
		1446
		1447	REQ_SEND;
		1448	}
		1449	}
		1450
		1451	void
		1452	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1453	PPCODE:
		1454	{
		1455	dREQ;
		1456
		1457	req->type = EIO_MLOCKALL;
		1458	req->int1 = flags;
		1459
		1460	REQ_SEND;
		1461	}
		1462
		1463	void
1602	aio_busy (delay,callback=&PL_sv_undef)	1464	aio_busy (double delay, SV *callback=&PL_sv_undef)
1603	double delay
1604	SV * callback
1605	PPCODE:	1465	PPCODE:
1606	{	1466	{
1607	dREQ;	1467	dREQ;
1608		1468
1609	req->type = REQ_BUSY;	1469	req->type = EIO_BUSY;
1610	req->int1 = delay < 0. ? 0 : delay;	1470	req->nv1 = delay < 0. ? 0. : delay;
1611	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1612		1471
1613	REQ_SEND;	1472	REQ_SEND;
1614	}	1473	}
1615		1474
1616	void	1475	void
1617	aio_group (callback=&PL_sv_undef)	1476	aio_group (SV *callback=&PL_sv_undef)
1618	SV * callback
1619	PROTOTYPE: ;$
1620	PPCODE:	1477	PPCODE:
1621	{	1478	{
1622	dREQ;	1479	dREQ;
1623		1480
1624	req->type = REQ_GROUP;	1481	req->type = EIO_GROUP;
1625		1482
1626	req_send (req);	1483	req_submit (req);
1627	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1484	XPUSHs (req_sv (req, aio_grp_stash));
1628	}	1485	}
1629		1486
1630	void	1487	void
1631	aio_nop (callback=&PL_sv_undef)	1488	aio_nop (SV *callback=&PL_sv_undef)
1632	SV * callback	1489	ALIAS:
		1490	aio_nop = EIO_NOP
		1491	aio_sync = EIO_SYNC
1633	PPCODE:	1492	PPCODE:
1634	{	1493	{
1635	dREQ;	1494	dREQ;
1636		1495
1637	req->type = REQ_NOP;	1496	req->type = ix;
1638		1497
1639	REQ_SEND;	1498	REQ_SEND;
1640	}	1499	}
1641		1500
1642	int	1501	int
1643	aioreq_pri (int pri = 0)	1502	aioreq_pri (int pri = 0)
1644	PROTOTYPE: ;$
1645	CODE:	1503	CODE:
1646	RETVAL = next_pri - PRI_BIAS;	1504	RETVAL = next_pri;
1647	if (items > 0)	1505	if (items > 0)
1648	{	1506	{
1649	if (pri < PRI_MIN) pri = PRI_MIN;	1507	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1650	if (pri > PRI_MAX) pri = PRI_MAX;	1508	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1651	next_pri = pri + PRI_BIAS;	1509	next_pri = pri;
1652	}	1510	}
1653	OUTPUT:	1511	OUTPUT:
1654	RETVAL	1512	RETVAL
1655		1513
1656	void	1514	void
1657	aioreq_nice (int nice = 0)	1515	aioreq_nice (int nice = 0)
1658	CODE:	1516	CODE:
1659	nice = next_pri - nice;	1517	nice = next_pri - nice;
1660	if (nice < PRI_MIN) nice = PRI_MIN;	1518	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1661	if (nice > PRI_MAX) nice = PRI_MAX;	1519	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1662	next_pri = nice + PRI_BIAS;	1520	next_pri = nice;
1663		1521
1664	void	1522	void
1665	flush ()	1523	flush ()
1666	PROTOTYPE:
1667	CODE:	1524	CODE:
1668	while (nreqs)	1525	while (eio_nreqs ())
1669	{	1526	{
1670	poll_wait ();	1527	poll_wait ();
1671	poll_cb ();	1528	poll_cb ();
1672	}	1529	}
1673		1530
1674	int	1531	int
1675	poll()	1532	poll ()
1676	PROTOTYPE:
1677	CODE:	1533	CODE:
1678	poll_wait ();	1534	poll_wait ();
1679	RETVAL = poll_cb ();	1535	RETVAL = poll_cb ();
1680	OUTPUT:	1536	OUTPUT:
1681	RETVAL	1537	RETVAL
1682		1538
1683	int	1539	int
1684	poll_fileno()	1540	poll_fileno ()
1685	PROTOTYPE:
1686	CODE:	1541	CODE:
1687	RETVAL = respipe [0];	1542	RETVAL = s_epipe_fd (&respipe);
1688	OUTPUT:	1543	OUTPUT:
1689	RETVAL	1544	RETVAL
1690		1545
1691	int	1546	int
1692	poll_cb(...)	1547	poll_cb (...)
1693	PROTOTYPE:	1548	PROTOTYPE:
1694	CODE:	1549	CODE:
1695	RETVAL = poll_cb ();	1550	RETVAL = poll_cb ();
1696	OUTPUT:	1551	OUTPUT:
1697	RETVAL	1552	RETVAL
1698		1553
1699	void	1554	void
1700	poll_wait()	1555	poll_wait ()
1701	PROTOTYPE:
1702	CODE:	1556	CODE:
1703	poll_wait ();	1557	poll_wait ();
1704		1558
1705	void
1706	setsig (int signum = SIGIO)
1707	PROTOTYPE: ;$
1708	CODE:
1709	{
1710	if (block_sig_level)
1711	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1712
1713	LOCK (reslock);
1714	main_tid = pthread_self ();
1715	main_sig = signum;
1716	UNLOCK (reslock);
1717
1718	if (main_sig && npending)
1719	pthread_kill (main_tid, main_sig);
1720	}
1721
1722	void
1723	aio_block (SV *cb)
1724	PROTOTYPE: &
1725	PPCODE:
1726	{
1727	int count;
1728
1729	block_sig ();
1730	PUSHMARK (SP);
1731	PUTBACK;
1732	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1733	SPAGAIN;
1734	unblock_sig ();
1735
1736	if (SvTRUE (ERRSV))
1737	croak (0);
1738
1739	XSRETURN (count);
1740	}
1741
1742	int	1559	int
1743	nreqs()	1560	nreqs ()
1744	PROTOTYPE:
1745	CODE:	1561	CODE:
1746	RETVAL = nreqs;	1562	RETVAL = eio_nreqs ();
1747	OUTPUT:	1563	OUTPUT:
1748	RETVAL	1564	RETVAL
1749		1565
1750	int	1566	int
1751	nready()	1567	nready ()
1752	PROTOTYPE:
1753	CODE:	1568	CODE:
1754	RETVAL = get_nready ();	1569	RETVAL = eio_nready ();
1755	OUTPUT:	1570	OUTPUT:
1756	RETVAL	1571	RETVAL
1757		1572
1758	int	1573	int
1759	npending()	1574	npending ()
1760	PROTOTYPE:
1761	CODE:	1575	CODE:
1762	RETVAL = get_npending ();	1576	RETVAL = eio_npending ();
1763	OUTPUT:	1577	OUTPUT:
1764	RETVAL	1578	RETVAL
1765		1579
1766	int	1580	int
1767	nthreads()	1581	nthreads ()
1768	PROTOTYPE:
1769	CODE:	1582	CODE:
1770	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1583	RETVAL = eio_nthreads ();
1771	RETVAL = started;
1772	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1773	OUTPUT:	1584	OUTPUT:
1774	RETVAL	1585	RETVAL
1775		1586
		1587	int
		1588	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1589	CODE:
		1590	RETVAL = posix_fadvise (fh, offset, length, advice);
		1591	OUTPUT:
		1592	RETVAL
		1593
		1594	IV
		1595	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1596	CODE:
		1597	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1598	OUTPUT:
		1599	RETVAL
		1600
		1601	void
		1602	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1603	PPCODE:
		1604	sv_unmagic (scalar, MMAP_MAGIC);
		1605	{
		1606	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1607	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1608	if (addr == (void *)-1)
		1609	XSRETURN_NO;
		1610
		1611	sv_force_normal (scalar);
		1612
		1613	/* we store the length in mg_obj, as namlen is I32 :/ */
		1614	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1615	->mg_obj = (SV *)length;
		1616
		1617	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1618
		1619	if (!(prot & PROT_WRITE))
		1620	SvREADONLY_on (scalar);
		1621
		1622	if (SvLEN (scalar))
		1623	Safefree (SvPVX (scalar));
		1624
		1625	SvPVX (scalar) = (char *)addr;
		1626	SvCUR_set (scalar, length);
		1627	SvLEN_set (scalar, 0);
		1628	SvPOK_only (scalar);
		1629
		1630	XSRETURN_YES;
		1631	}
		1632
		1633	void
		1634	munmap (SV *scalar)
		1635	CODE:
		1636	sv_unmagic (scalar, MMAP_MAGIC);
		1637
		1638	int
		1639	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1640	ALIAS:
		1641	mprotect = 1
		1642	CODE:
		1643	{
		1644	STRLEN svlen;
		1645	void *addr = SvPVbyte (scalar, svlen);
		1646	size_t len = SvUV (length);
		1647
		1648	if (offset < 0)
		1649	offset += svlen;
		1650
		1651	if (offset < 0 || offset > svlen)
		1652	croak ("offset outside of scalar");
		1653
		1654	if (!SvOK (length) || len + offset > svlen)
		1655	len = svlen - offset;
		1656
		1657	addr = (void *)(((intptr_t)addr) + offset);
		1658	eio_page_align (&addr, &len);
		1659
		1660	switch (ix)
		1661	{
		1662	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1663	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1664	}
		1665	}
		1666	OUTPUT:
		1667	RETVAL
		1668
		1669	int
		1670	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1671	CODE:
		1672	{
		1673	STRLEN svlen;
		1674	void *addr = SvPVbyte (scalar, svlen);
		1675	size_t len = SvUV (length);
		1676
		1677	if (offset < 0)
		1678	offset += svlen;
		1679
		1680	if (offset < 0 || offset > svlen)
		1681	croak ("offset outside of scalar");
		1682
		1683	if (!SvOK (length) || len + offset > svlen)
		1684	len = svlen - offset;
		1685
		1686	addr = (void *)(((intptr_t)addr) + offset);
		1687	eio_page_align (&addr, &len);
		1688	#if _POSIX_MEMLOCK_RANGE
		1689	RETVAL = munlock (addr, len);
		1690	#else
		1691	RETVAL = ((errno = ENOSYS), -1);
		1692	#endif
		1693	}
		1694	OUTPUT:
		1695	RETVAL
		1696
		1697	int
		1698	munlockall ()
		1699	CODE:
		1700	#if _POSIX_MEMLOCK
		1701	munlockall ();
		1702	#else
		1703	RETVAL = -1;
		1704	errno = ENOSYS;
		1705	#endif
		1706	OUTPUT:
		1707	RETVAL
		1708
		1709	void _on_next_submit (SV *cb)
		1710	CODE:
		1711	SvREFCNT_dec (on_next_submit);
		1712	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1713
1776	PROTOTYPES: DISABLE	1714	PROTOTYPES: DISABLE
1777		1715
1778	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1716	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1779		1717
1780	void	1718	void
1781	cancel (aio_req_ornot req)	1719	cancel (aio_req_ornot req)
1782	CODE:	1720	CODE:
1783	req_cancel (req);	1721	eio_cancel (req);
1784		1722
1785	void	1723	void
1786	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1724	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1787	CODE:	1725	PPCODE:
		1726	{
		1727	if (GIMME_V != G_VOID)
		1728	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1729
		1730	if (items > 1)
		1731	{
		1732	SV *cb_cv =get_cb (callback);
		1733
1788	SvREFCNT_dec (req->callback);	1734	SvREFCNT_dec (req->callback);
1789	req->callback = newSVsv (callback);	1735	req->callback = SvREFCNT_inc (cb_cv);
		1736	}
		1737	}
1790		1738
1791	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1739	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1792		1740
1793	void	1741	void
1794	add (aio_req grp, ...)	1742	add (aio_req grp, ...)
1795	PPCODE:	1743	PPCODE:
1796	{	1744	{
1797	int i;	1745	int i;
1798	aio_req req;
1799
1800	if (main_sig && !block_sig_level)
1801	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1802		1746
1803	if (grp->int1 == 2)	1747	if (grp->int1 == 2)
1804	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1748	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1805		1749
1806	for (i = 1; i < items; ++i )	1750	for (i = 1; i < items; ++i )
1807	{	1751	{
		1752	aio_req req;
		1753
1808	if (GIMME_V != G_VOID)	1754	if (GIMME_V != G_VOID)
1809	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1755	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1810		1756
1811	req = SvAIO_REQ (ST (i));	1757	req = SvAIO_REQ (ST (i));
1812		1758
1813	if (req)	1759	if (req)
1814	{	1760	eio_grp_add (grp, req);
1815	++grp->size;
1816	req->grp = grp;
1817
1818	req->grp_prev = 0;
1819	req->grp_next = grp->grp_first;
1820
1821	if (grp->grp_first)
1822	grp->grp_first->grp_prev = req;
1823
1824	grp->grp_first = req;
1825	}
1826	}	1761	}
1827	}	1762	}
1828		1763
1829	void	1764	void
1830	cancel_subs (aio_req_ornot req)	1765	cancel_subs (aio_req_ornot req)
…		…
1839	AV *av;	1774	AV *av;
1840		1775
1841	grp->errorno = errno;	1776	grp->errorno = errno;
1842		1777
1843	av = newAV ();	1778	av = newAV ();
		1779	av_extend (av, items - 1);
1844		1780
1845	for (i = 1; i < items; ++i )	1781	for (i = 1; i < items; ++i )
1846	av_push (av, newSVsv (ST (i)));	1782	av_push (av, newSVsv (ST (i)));
1847		1783
1848	SvREFCNT_dec (grp->sv1);	1784	SvREFCNT_dec (grp->sv1);
…		…
1855	grp->errorno = errorno;	1791	grp->errorno = errorno;
1856		1792
1857	void	1793	void
1858	limit (aio_req grp, int limit)	1794	limit (aio_req grp, int limit)
1859	CODE:	1795	CODE:
1860	grp->int2 = limit;	1796	eio_grp_limit (grp, limit);
1861	aio_grp_feed (grp);
1862		1797
1863	void	1798	void
1864	feed (aio_req grp, SV *callback=&PL_sv_undef)	1799	feed (aio_req grp, SV *callback=&PL_sv_undef)
1865	CODE:	1800	CODE:
1866	{	1801	{
1867	SvREFCNT_dec (grp->sv2);	1802	SvREFCNT_dec (grp->sv2);
1868	grp->sv2 = newSVsv (callback);	1803	grp->sv2 = newSVsv (callback);
		1804	grp->feed = aio_grp_feed;
1869		1805
1870	if (grp->int2 <= 0)	1806	if (grp->int2 <= 0)
1871	grp->int2 = 2;	1807	grp->int2 = 2;
1872		1808
1873	aio_grp_feed (grp);	1809	eio_grp_limit (grp, grp->int2);
1874	}	1810	}
1875		1811

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