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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.106 by root, Mon Sep 24 18:14:00 2007 UTC vs.
Revision 1.182 by root, Thu May 19 22:57:04 2011 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
		8
		9	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
14	#include <limits.h>	17	#include <limits.h>
15	#include <fcntl.h>	18	#include <fcntl.h>
16	#include <sched.h>	19	#include <sched.h>
17		20
		21	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		22	# include <sys/mman.h>
		23	#endif
		24
		25	/* perl namespace pollution */
		26	#undef VERSION
		27
18	#ifdef _WIN32	28	#ifdef _WIN32
19		29
20	# define SIGIO 0	30	# define EIO_STRUCT_DIRENT Direntry_t
21	typedef Direntry_t X_DIRENT;
22	#undef malloc	31	# undef malloc
23	#undef free	32	# undef free
24		33
25	// perl overrides all those nice win32 functions	34	// perl overrides all those nice win32 functions
26	# undef open	35	# undef open
27	# undef read	36	# undef read
28	# undef write	37	# undef write
…		…
54	# define closedir(fd) (errno = ENOSYS, -1)	63	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)	64	# define mkdir(a,b) mkdir (a)
56		65
57	#else	66	#else
58		67
59	# include "autoconf/config.h"
60	# include <sys/time.h>	68	# include <sys/time.h>
61	# include <sys/select.h>	69	# include <sys/select.h>
62	# include <unistd.h>	70	# include <unistd.h>
63	# include <utime.h>	71	# include <utime.h>
64	# include <signal.h>	72	# include <signal.h>
65	typedef struct dirent X_DIRENT;	73	# define EIO_STRUCT_DIRENT struct dirent
66		74
67	#endif
68
69	#if HAVE_SENDFILE
70	# if __linux
71	# include <sys/sendfile.h>
72	# elif __freebsd
73	# include <sys/socket.h>
74	# include <sys/uio.h>
75	# elif __hpux
76	# include <sys/socket.h>
77	# elif __solaris /* not yet */
78	# include <sys/sendfile.h>
79	# else
80	# error sendfile support requested but not available
81	# endif	75	#endif
82	#endif
83		76
84	/* number of seconds after which idle threads exit */	77	/* perl stupidly overrides readdir and maybe others */
85	#define IDLE_TIMEOUT 10	78	/* with thread-unsafe versions, imagine that :( */
		79	#undef readdir
		80	#undef opendir
		81	#undef closedir
86		82
87	/* used for struct dirent, AIX doesn't provide it */	83	#define EIO_STRUCT_STAT Stat_t
88	#ifndef NAME_MAX
89	# define NAME_MAX 4096
90	#endif
91
92	/* buffer size for various temporary buffers */
93	#define AIO_BUFSIZE 65536
94		84
95	/* use NV for 32 bit perls as it allows larger offsets */	85	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8	86	#if IVSIZE >= 8
		87	# define VAL64 IV
97	# define SvVAL64 SvIV	88	# define SvVAL64 SvIV
		89	# define newSVval64 newSViv
98	#else	90	#else
		91	# define VAL64 NV
99	# define SvVAL64 SvNV	92	# define SvVAL64 SvNV
		93	# define newSVval64 newSVnv
100	#endif	94	#endif
101		95
102	#define dBUF \	96	/*****************************************************************************/
103	char *aio_buf; \	97
104	X_LOCK (wrklock); \	98	#if __GNUC__ >= 3
105	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	99	# define expect(expr,value) __builtin_expect ((expr),(value))
106	X_UNLOCK (wrklock); \	100	#else
107	if (!aio_buf) \	101	# define expect(expr,value) (expr)
108	return -1;	102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
109		108
110	typedef SV SV8; /* byte-sv, used for argument-checking */	109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	/* Linux/others */
		127	#ifndef O_ASYNC
		128	# define O_ASYNC 0
		129	#endif
		130	#ifndef O_DIRECT
		131	# define O_DIRECT 0
		132	#endif
		133	#ifndef O_NOATIME
		134	# define O_NOATIME 0
		135	#endif
		136
		137	/* POSIX */
		138	#ifndef O_CLOEXEC
		139	# define O_CLOEXEC 0
		140	#endif
		141	#ifndef O_NOFOLLOW
		142	# define O_NOFOLLOW 0
		143	#endif
		144	#ifndef O_NOCTTY
		145	# define O_NOCTTY 0
		146	#endif
		147	#ifndef O_NONBLOCK
		148	# define O_NONBLOCK 0
		149	#endif
		150	#ifndef O_EXEC
		151	# define O_EXEC 0
		152	#endif
		153	#ifndef O_SEARCH
		154	# define O_SEARCH 0
		155	#endif
		156	#ifndef O_DIRECTORY
		157	# define O_DIRECTORY 0
		158	#endif
		159	#ifndef O_DSYNC
		160	# define O_DSYNC 0
		161	#endif
		162	#ifndef O_RSYNC
		163	# define O_RSYNC 0
		164	#endif
		165	#ifndef O_SYNC
		166	# define O_SYNC 0
		167	#endif
		168	#ifndef O_TTY_INIT
		169	# define O_TTY_INIT 0
		170	#endif
		171
		172	#ifndef POSIX_FADV_NORMAL
		173	# define POSIX_FADV_NORMAL 0
		174	#endif
		175	#ifndef POSIX_FADV_SEQUENTIAL
		176	# define POSIX_FADV_SEQUENTIAL 0
		177	#endif
		178	#ifndef POSIX_FADV_RANDOM
		179	# define POSIX_FADV_RANDOM 0
		180	#endif
		181	#ifndef POSIX_FADV_NOREUSE
		182	# define POSIX_FADV_NOREUSE 0
		183	#endif
		184	#ifndef POSIX_FADV_WILLNEED
		185	# define POSIX_FADV_WILLNEED 0
		186	#endif
		187	#ifndef POSIX_FADV_DONTNEED
		188	# define POSIX_FADV_DONTNEED 0
		189	#endif
		190
		191	#if !HAVE_POSIX_FADVISE
		192	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		193	#endif
		194
		195	#ifndef POSIX_MADV_NORMAL
		196	# define POSIX_MADV_NORMAL 0
		197	#endif
		198	#ifndef POSIX_MADV_SEQUENTIAL
		199	# define POSIX_MADV_SEQUENTIAL 0
		200	#endif
		201	#ifndef POSIX_MADV_RANDOM
		202	# define POSIX_MADV_RANDOM 0
		203	#endif
		204	#ifndef POSIX_MADV_WILLNEED
		205	# define POSIX_MADV_WILLNEED 0
		206	#endif
		207	#ifndef POSIX_MADV_DONTNEED
		208	# define POSIX_MADV_DONTNEED 0
		209	#endif
		210
		211	#if !HAVE_POSIX_MADVISE
		212	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		213	#endif
		214
		215	#ifndef PROT_NONE
		216	# define PROT_NONE 0
		217	#endif
		218	#ifndef PROT_READ
		219	# define PROT_READ 0
		220	#endif
		221	#ifndef PROT_WRITE
		222	# define PROT_READ 0
		223	#endif
		224	#ifndef PROT_EXEC
		225	# define PROT_EXEC 0
		226	#endif
		227
		228	#ifndef ST_NODEV
		229	# define ST_NODEV 0
		230	#endif
		231	#ifndef ST_NOEXEC
		232	# define ST_NOEXEC 0
		233	#endif
		234	#ifndef ST_SYNCHRONOUS
		235	# define ST_SYNCHRONOUS 0
		236	#endif
		237	#ifndef ST_MANDLOCK
		238	# define ST_MANDLOCK 0
		239	#endif
		240	#ifndef ST_WRITE
		241	# define ST_WRITE 0
		242	#endif
		243	#ifndef ST_APPEND
		244	# define ST_APPEND 0
		245	#endif
		246	#ifndef ST_IMMUTABLE
		247	# define ST_IMMUTABLE 0
		248	#endif
		249	#ifndef ST_NOATIME
		250	# define ST_NOATIME 0
		251	#endif
		252	#ifndef ST_NODIRATIME
		253	# define ST_NODIRATIME 0
		254	#endif
		255	#ifndef ST_RELATIME
		256	# define ST_RELATIME 0
		257	#endif
		258
		259	#ifndef S_IFIFO
		260	# define S_IFIFO 0
		261	#endif
		262	#ifndef S_IFCHR
		263	# define S_IFCHR 0
		264	#endif
		265	#ifndef S_IFBLK
		266	# define S_IFBLK 0
		267	#endif
		268	#ifndef S_IFLNK
		269	# define S_IFLNK 0
		270	#endif
		271	#ifndef S_IFREG
		272	# define S_IFREG 0
		273	#endif
		274	#ifndef S_IFDIR
		275	# define S_IFDIR 0
		276	#endif
		277	#ifndef S_IFWHT
		278	# define S_IFWHT 0
		279	#endif
		280	#ifndef S_IFSOCK
		281	# define S_IFSOCK 0
		282	#endif
		283
		284	#ifndef MAP_ANONYMOUS
		285	# ifdef MAP_ANON
		286	# define MAP_ANONYMOUS MAP_ANON
		287	# else
		288	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		289	# endif
		290	#endif
		291	#ifndef MAP_HUGETLB
		292	# define MAP_HUGETLB 0
		293	#endif
		294	#ifndef MAP_LOCKED
		295	# define MAP_LOCKED 0
		296	#endif
		297	#ifndef MAP_NORESERVE
		298	# define MAP_NORESERVE 0
		299	#endif
		300	#ifndef MAP_POPULATE
		301	# define MAP_POPULATE 0
		302	#endif
		303	#ifndef MAP_NONBLOCK
		304	# define MAP_NONBLOCK 0
		305	#endif
		306
		307	#ifndef makedev
		308	# define makedev(maj,min) (((maj) << 8) | (min))
		309	#endif
		310	#ifndef major
		311	# define major(dev) ((dev) >> 8)
		312	#endif
		313	#ifndef minor
		314	# define minor(dev) ((dev) & 0xff)
		315	#endif
		316
		317	#ifndef PAGESIZE
		318	# define PAGESIZE sysconf (_SC_PAGESIZE)
		319	#endif
		320
		321	static int req_invoke (eio_req *req);
		322	#define EIO_FINISH(req) req_invoke (req)
		323	static void req_destroy (eio_req *grp);
		324	#define EIO_DESTROY(req) req_destroy (req)
111		325
112	enum {	326	enum {
113	REQ_QUIT,	327	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
114	REQ_OPEN, REQ_CLOSE,
115	REQ_READ, REQ_WRITE,
116	REQ_READAHEAD, REQ_SENDFILE,
117	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
118	REQ_TRUNCATE, REQ_FTRUNCATE,
119	REQ_UTIME, REQ_FUTIME,
120	REQ_CHMOD, REQ_FCHMOD,
121	REQ_CHOWN, REQ_FCHOWN,
122	REQ_FSYNC, REQ_FDATASYNC,
123	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
124	REQ_MKNOD, REQ_READDIR,
125	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
126	REQ_GROUP, REQ_NOP,
127	REQ_BUSY,
128	};	328	};
129		329
130	#define AIO_REQ_KLASS "IO::AIO::REQ"	330	#include "libeio/eio.c"
131	#define AIO_GRP_KLASS "IO::AIO::GRP"
132		331
133	typedef struct aio_cb
134	{
135	struct aio_cb *volatile next;
136
137	SV *callback;
138	SV *sv1, *sv2;
139	void *ptr1, *ptr2;
140	off_t offs;
141	size_t size;
142	ssize_t result;
143	double nv1, nv2;
144
145	STRLEN stroffset;
146	int type;
147	int int1, int2, int3;
148	int errorno;
149	mode_t mode; /* open */
150
151	unsigned char flags;
152	unsigned char pri;
153
154	SV *self; /* the perl counterpart of this request, if any */
155	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
156	} aio_cb;
157
158	enum {
159	FLAG_CANCELLED = 0x01, /* request was cancelled */
160	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
161	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
162	};
163
164	typedef aio_cb *aio_req;	332	typedef eio_req *aio_req;
165	typedef aio_cb *aio_req_ornot;	333	typedef eio_req *aio_req_ornot;
166		334
167	enum {	335	static SV *on_next_submit;
168	PRI_MIN = -4,	336	static int next_pri = EIO_PRI_DEFAULT;
169	PRI_MAX = 4,	337	static int max_outstanding;
170		338
171	DEFAULT_PRI = 0,	339	static s_epipe respipe;
172	PRI_BIAS = -PRI_MIN,
173	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
174	};
175		340
176	#define AIO_TICKS ((1000000 + 1023) >> 10)
177
178	static unsigned int max_poll_time = 0;
179	static unsigned int max_poll_reqs = 0;
180
181	/* calculcate time difference in ~1/AIO_TICKS of a second */
182	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
183	{
184	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
185	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
186	}
187
188	static thread_t main_tid;
189	static int main_sig;
190	static int block_sig_level;
191
192	void block_sig ()
193	{
194	sigset_t ss;
195
196	if (block_sig_level++)
197	return;
198
199	if (!main_sig)
200	return;
201
202	sigemptyset (&ss);
203	sigaddset (&ss, main_sig);
204	pthread_sigmask (SIG_BLOCK, &ss, 0);
205	}
206
207	void unblock_sig ()
208	{
209	sigset_t ss;
210
211	if (--block_sig_level)
212	return;
213
214	if (!main_sig)
215	return;
216
217	sigemptyset (&ss);
218	sigaddset (&ss, main_sig);
219	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
220	}
221
222	static int next_pri = DEFAULT_PRI + PRI_BIAS;
223
224	static unsigned int started, idle, wanted;
225
226	/* worker threads management */
227	static mutex_t wrklock = X_MUTEX_INIT;
228
229	typedef struct worker {
230	/* locked by wrklock */
231	struct worker *prev, *next;
232
233	thread_t tid;
234
235	/* locked by reslock, reqlock or wrklock */
236	aio_req req; /* currently processed request */
237	void *dbuf;
238	DIR *dirp;
239	} worker;
240
241	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
242
243	static void worker_clear (worker *wrk)
244	{
245	if (wrk->dirp)
246	{
247	closedir (wrk->dirp);
248	wrk->dirp = 0;
249	}
250
251	if (wrk->dbuf)
252	{
253	free (wrk->dbuf);
254	wrk->dbuf = 0;
255	}
256	}
257
258	static void worker_free (worker *wrk)
259	{
260	wrk->next->prev = wrk->prev;
261	wrk->prev->next = wrk->next;
262
263	free (wrk);
264	}
265
266	static volatile unsigned int nreqs, nready, npending;
267	static volatile unsigned int max_idle = 4;
268	static volatile unsigned int max_outstanding = 0xffffffff;
269	static int respipe_osf [2], respipe [2] = { -1, -1 };
270
271	static mutex_t reslock = X_MUTEX_INIT;
272	static mutex_t reqlock = X_MUTEX_INIT;
273	static cond_t reqwait = X_COND_INIT;
274
275	#if WORDACCESS_UNSAFE
276
277	static unsigned int get_nready ()
278	{
279	unsigned int retval;
280
281	X_LOCK (reqlock);
282	retval = nready;
283	X_UNLOCK (reqlock);
284
285	return retval;
286	}
287
288	static unsigned int get_npending ()
289	{
290	unsigned int retval;
291
292	X_LOCK (reslock);
293	retval = npending;
294	X_UNLOCK (reslock);
295
296	return retval;
297	}
298
299	static unsigned int get_nthreads ()
300	{
301	unsigned int retval;
302
303	X_LOCK (wrklock);
304	retval = started;
305	X_UNLOCK (wrklock);
306
307	return retval;
308	}
309
310	#else
311
312	# define get_nready() nready
313	# define get_npending() npending
314	# define get_nthreads() started
315
316	#endif
317
318	/*
319	* a somewhat faster data structure might be nice, but
320	* with 8 priorities this actually needs <20 insns
321	* per shift, the most expensive operation.
322	*/
323	typedef struct {
324	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
325	int size;
326	} reqq;
327
328	static reqq req_queue;
329	static reqq res_queue;
330
331	int reqq_push (reqq *q, aio_req req)
332	{
333	int pri = req->pri;
334	req->next = 0;
335
336	if (q->qe[pri])
337	{
338	q->qe[pri]->next = req;
339	q->qe[pri] = req;
340	}
341	else
342	q->qe[pri] = q->qs[pri] = req;
343
344	return q->size++;
345	}
346
347	aio_req reqq_shift (reqq *q)
348	{
349	int pri;
350
351	if (!q->size)
352	return 0;
353
354	--q->size;
355
356	for (pri = NUM_PRI; pri--; )
357	{
358	aio_req req = q->qs[pri];
359
360	if (req)
361	{
362	if (!(q->qs[pri] = req->next))
363	q->qe[pri] = 0;
364
365	return req;
366	}
367	}
368
369	abort ();
370	}
371
372	static int poll_cb ();
373	static int req_invoke (aio_req req);
374	static void req_destroy (aio_req req);	341	static void req_destroy (aio_req req);
375	static void req_cancel (aio_req req);	342	static void req_cancel (aio_req req);
376		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
377	/* must be called at most once */	356	/* must be called at most once */
378	static SV *req_sv (aio_req req, const char *klass)	357	static SV *req_sv (aio_req req, HV *stash)
379	{	358	{
380	if (!req->self)	359	if (!req->self)
381	{	360	{
382	req->self = (SV *)newHV ();	361	req->self = (SV *)newHV ();
383	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	362	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
384	}	363	}
385		364
386	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	365	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
387	}	366	}
388		367
389	static aio_req SvAIO_REQ (SV *sv)	368	static aio_req SvAIO_REQ (SV *sv)
390	{	369	{
391	MAGIC *mg;	370	MAGIC *mg;
392		371
393	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")))
394	croak ("object of class " AIO_REQ_KLASS " expected");	376	croak ("object of class IO::AIO::REQ expected");
395		377
396	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	378	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
397		379
398	return mg ? (aio_req)mg->mg_ptr : 0;	380	return mg ? (aio_req)mg->mg_ptr : 0;
399	}	381	}
400		382
401	static void aio_grp_feed (aio_req grp)	383	static void aio_grp_feed (aio_req grp)
402	{	384	{
403	block_sig ();	385	if (grp->sv2 && SvOK (grp->sv2))
404
405	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
406	{	386	{
407	int old_len = grp->size;
408
409	if (grp->sv2 && SvOK (grp->sv2))
410	{
411	dSP;	387	dSP;
412		388
413	ENTER;	389	ENTER;
414	SAVETMPS;	390	SAVETMPS;
415	PUSHMARK (SP);	391	PUSHMARK (SP);
416	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	392	XPUSHs (req_sv (grp, aio_grp_stash));
417	PUTBACK;	393	PUTBACK;
418	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	394	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
419	SPAGAIN;	395	SPAGAIN;
420	FREETMPS;	396	FREETMPS;
421	LEAVE;	397	LEAVE;
422	}
423
424	/* stop if no progress has been made */
425	if (old_len == grp->size)
426	{
427	SvREFCNT_dec (grp->sv2);
428	grp->sv2 = 0;
429	break;
430	}
431	}	398	}
432
433	unblock_sig ();
434	}	399	}
435		400
436	static void aio_grp_dec (aio_req grp)	401	static void req_submit (eio_req *req)
437	{	402	{
438	--grp->size;	403	eio_submit (req);
439		404
440	/* call feeder, if applicable */	405	if (expect_false (on_next_submit))
441	aio_grp_feed (grp);
442
443	/* finish, if done */
444	if (!grp->size && grp->int1)
445	{	406	{
446	block_sig ();	407	dSP;
		408	SV *cb = sv_2mortal (on_next_submit);
447		409
448	if (!req_invoke (grp))	410	on_next_submit = 0;
449	{
450	req_destroy (grp);
451	unblock_sig ();
452	croak (0);
453	}
454		411
455	req_destroy (grp);	412	PUSHMARK (SP);
456	unblock_sig ();	413	PUTBACK;
		414	call_sv (cb, G_DISCARD | G_EVAL);
457	}	415	}
458	}	416	}
459		417
460	static int req_invoke (aio_req req)	418	static int req_invoke (eio_req *req)
461	{	419	{
462	dSP;
463
464	if (req->flags & FLAG_SV2_RO_OFF)	420	if (req->flags & FLAG_SV2_RO_OFF)
465	SvREADONLY_off (req->sv2);	421	SvREADONLY_off (req->sv2);
466		422
467	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	423	if (!EIO_CANCELLED (req) && req->callback)
468	{	424	{
		425	dSP;
		426	static SV *sv_result_cache; /* caches the result integer SV */
		427	SV *sv_result;
		428
469	ENTER;	429	ENTER;
470	SAVETMPS;	430	SAVETMPS;
471	PUSHMARK (SP);	431	PUSHMARK (SP);
472	EXTEND (SP, 1);	432	EXTEND (SP, 1);
473		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
474	switch (req->type)	447	switch (req->type)
475	{	448	{
476	case REQ_READDIR:	449	case EIO_READDIR:
477	{	450	{
478	SV *rv = &PL_sv_undef;	451	SV *rv = &PL_sv_undef;
479		452
480	if (req->result >= 0)	453	if (req->result >= 0)
481	{	454	{
482	int i;	455	int i;
483	char *buf = req->ptr2;	456	char *names = (char *)req->ptr2;
		457	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
484	AV *av = newAV ();	458	AV *av = newAV ();
485		459
486	av_extend (av, req->result - 1);	460	av_extend (av, req->result - 1);
487		461
488	for (i = 0; i < req->result; ++i)	462	for (i = 0; i < req->result; ++i)
489	{	463	{
490	SV *sv = newSVpv (buf, 0);	464	if (req->int1 & EIO_READDIR_DENTS)
		465	{
		466	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
491		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
492	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);
493	buf += SvCUR (sv) + 1;	496	names += SvCUR (name) + 1;
		497	}
494	}	498	}
495		499
496	rv = sv_2mortal (newRV_noinc ((SV *)av));	500	rv = sv_2mortal (newRV_noinc ((SV *)av));
497	}	501	}
498		502
499	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))));
500	}	507	}
501	break;	508	break;
502		509
503	case REQ_OPEN:	510	case EIO_OPEN:
504	{	511	{
505	/* convert fd to fh */	512	/* convert fd to fh */
506	SV *fh;	513	SV *fh = &PL_sv_undef;
507		514
508	PUSHs (sv_2mortal (newSViv (req->result)));	515	if (req->result >= 0)
509	PUTBACK;	516	{
510	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	517	GV *gv = (GV *)sv_newmortal ();
511	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);
512		524
513	fh = POPs;	525	symlen = snprintf (
514	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
515	XPUSHs (fh);	537	PUSHs (fh);
516	}	538	}
517	break;	539	break;
518		540
		541	case EIO_STATVFS:
		542	case EIO_FSTATVFS:
		543	{
		544	SV *rv = &PL_sv_undef;
		545
		546	if (req->result >= 0)
		547	{
		548	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		549	HV *hv = newHV ();
		550
		551	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		552
		553	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		554	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		555	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		556	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		557	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		558	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		559	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		560	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		561	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		562	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		563	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		564	}
		565
		566	PUSHs (rv);
		567	}
		568
		569	break;
		570
519	case REQ_GROUP:	571	case EIO_GROUP:
520	req->int1 = 2; /* mark group as finished */	572	req->int1 = 2; /* mark group as finished */
521		573
522	if (req->sv1)	574	if (req->sv1)
523	{	575	{
524	int i;	576	int i;
…		…
528	for (i = 0; i <= AvFILL (av); ++i)	580	for (i = 0; i <= AvFILL (av); ++i)
529	PUSHs (*av_fetch (av, i, 0));	581	PUSHs (*av_fetch (av, i, 0));
530	}	582	}
531	break;	583	break;
532		584
533	case REQ_NOP:	585	case EIO_NOP:
534	case REQ_BUSY:	586	case EIO_BUSY:
535	break;	587	break;
536		588
537	case REQ_READLINK:	589	case EIO_READLINK:
538	if (req->result > 0)	590	if (req->result > 0)
539	{	591	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
540	SvCUR_set (req->sv2, req->result);
541	*SvEND (req->sv2) = 0;
542	PUSHs (req->sv2);
543	}
544	break;	592	break;
545		593
546	case REQ_STAT:	594	case EIO_STAT:
547	case REQ_LSTAT:	595	case EIO_LSTAT:
548	case REQ_FSTAT:	596	case EIO_FSTAT:
549	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	597	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
550	PL_laststatval = req->result;	598	PL_laststatval = req->result;
551	PL_statcache = *(Stat_t *)(req->ptr2);	599	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
552	PUSHs (sv_2mortal (newSViv (req->result)));	600	PUSHs (sv_result);
553	break;	601	break;
554		602
555	case REQ_READ:	603	case EIO_READ:
		604	{
556	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	605	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
557	*SvEND (req->sv2) = 0;	606	*SvEND (req->sv2) = 0;
558	PUSHs (sv_2mortal (newSViv (req->result)));	607	SvPOK_only (req->sv2);
		608	SvSETMAGIC (req->sv2);
		609	PUSHs (sv_result);
		610	}
559	break;	611	break;
560		612
		613	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		614	if (req->result > 0)
		615	SvIV_set (sv_result, 0);
		616	/* FALLTHROUGH */
		617
561	default:	618	default:
562	PUSHs (sv_2mortal (newSViv (req->result)));	619	PUSHs (sv_result);
563	break;	620	break;
564	}	621	}
565		622
566	errno = req->errorno;	623	errno = req->errorno;
567		624
568	PUTBACK;	625	PUTBACK;
569	call_sv (req->callback, G_VOID | G_EVAL);	626	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
570	SPAGAIN;	627	SPAGAIN;
		628
		629	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		630	SvREFCNT_dec (sv_result);
		631	else
		632	sv_result_cache = sv_result;
571		633
572	FREETMPS;	634	FREETMPS;
573	LEAVE;	635	LEAVE;
		636
		637	PUTBACK;
574	}	638	}
575		639
576	if (req->grp)
577	{
578	aio_req grp = req->grp;
579
580	/* unlink request */
581	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
582	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
583
584	if (grp->grp_first == req)
585	grp->grp_first = req->grp_next;
586
587	aio_grp_dec (grp);
588	}
589
590	return !SvTRUE (ERRSV);	640	return !!SvTRUE (ERRSV);
591	}	641	}
592		642
593	static void req_destroy (aio_req req)	643	static void req_destroy (aio_req req)
594	{	644	{
595	if (req->self)	645	if (req->self)
…		…
600		650
601	SvREFCNT_dec (req->sv1);	651	SvREFCNT_dec (req->sv1);
602	SvREFCNT_dec (req->sv2);	652	SvREFCNT_dec (req->sv2);
603	SvREFCNT_dec (req->callback);	653	SvREFCNT_dec (req->callback);
604		654
605	if (req->flags & FLAG_PTR2_FREE)
606	free (req->ptr2);
607
608	Safefree (req);	655	Safefree (req);
609	}	656	}
610		657
611	static void req_cancel_subs (aio_req grp)	658	static void req_cancel_subs (aio_req grp)
612	{	659	{
613	aio_req sub;	660	aio_req sub;
614		661
615	if (grp->type != REQ_GROUP)	662	if (grp->type != EIO_GROUP)
616	return;	663	return;
617		664
618	SvREFCNT_dec (grp->sv2);	665	SvREFCNT_dec (grp->sv2);
619	grp->sv2 = 0;	666	grp->sv2 = 0;
620		667
621	for (sub = grp->grp_first; sub; sub = sub->grp_next)	668	eio_grp_cancel (grp);
622	req_cancel (sub);
623	}	669	}
624
625	static void req_cancel (aio_req req)
626	{
627	req->flags |= FLAG_CANCELLED;
628
629	req_cancel_subs (req);
630	}
631
632	#ifdef USE_SOCKETS_AS_HANDLES
633	# define TO_SOCKET(x) (win32_get_osfhandle (x))
634	#else
635	# define TO_SOCKET(x) (x)
636	#endif
637		670
638	static void	671	static void
639	create_respipe ()	672	create_respipe (void)
640	{	673	{
641	int old_readfd = respipe [0];
642
643	if (respipe [1] >= 0)
644	respipe_close (TO_SOCKET (respipe [1]));
645
646	#ifdef _WIN32
647	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
648	#else
649	if (pipe (respipe))	674	if (s_epipe_renew (&respipe))
650	#endif
651	croak ("unable to initialize result pipe");	675	croak ("IO::AIO: unable to initialize result pipe");
652
653	if (old_readfd >= 0)
654	{
655	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
656	croak ("unable to initialize result pipe(2)");
657
658	respipe_close (respipe [0]);
659	respipe [0] = old_readfd;
660	}
661
662	#ifdef _WIN32
663	int arg = 1;
664	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
665	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
666	#else
667	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
668	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
669	#endif
670	croak ("unable to initialize result pipe(3)");
671
672	respipe_osf [0] = TO_SOCKET (respipe [0]);
673	respipe_osf [1] = TO_SOCKET (respipe [1]);
674	}	676	}
675		677
676	X_THREAD_PROC (aio_proc);
677
678	static void start_thread (void)
679	{
680	worker *wrk = calloc (1, sizeof (worker));
681
682	if (!wrk)
683	croak ("unable to allocate worker thread data");
684
685	X_LOCK (wrklock);
686
687	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
688	{
689	wrk->prev = &wrk_first;
690	wrk->next = wrk_first.next;
691	wrk_first.next->prev = wrk;
692	wrk_first.next = wrk;
693	++started;
694	}
695	else
696	free (wrk);
697
698	X_UNLOCK (wrklock);
699	}
700
701	static void maybe_start_thread ()
702	{
703	if (get_nthreads () >= wanted)
704	return;
705
706	/* todo: maybe use idle here, but might be less exact */
707	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
708	return;
709
710	start_thread ();
711	}
712
713	static void req_send (aio_req req)
714	{
715	block_sig ();
716
717	++nreqs;
718
719	X_LOCK (reqlock);
720	++nready;
721	reqq_push (&req_queue, req);
722	X_COND_SIGNAL (reqwait);
723	X_UNLOCK (reqlock);
724
725	unblock_sig ();
726
727	maybe_start_thread ();
728	}
729
730	static void end_thread (void)
731	{
732	aio_req req;
733
734	Newz (0, req, 1, aio_cb);
735
736	req->type = REQ_QUIT;
737	req->pri = PRI_MAX + PRI_BIAS;
738
739	X_LOCK (reqlock);
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	X_LOCK (wrklock);
745	--started;
746	X_UNLOCK (wrklock);
747	}
748
749	static void set_max_idle (int nthreads)
750	{
751	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
752	max_idle = nthreads <= 0 ? 1 : nthreads;
753	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
754	}
755
756	static void min_parallel (int nthreads)
757	{
758	if (wanted < nthreads)
759	wanted = nthreads;
760	}
761
762	static void max_parallel (int nthreads)
763	{
764	if (wanted > nthreads)
765	wanted = nthreads;
766
767	while (started > wanted)
768	end_thread ();
769	}
770
771	static void poll_wait ()	678	static void poll_wait (void)
772	{	679	{
773	fd_set rfd;
774
775	while (nreqs)	680	while (eio_nreqs ())
776	{	681	{
777	int size;	682	int size;
778	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	683
		684	X_LOCK (reslock);
779	size = res_queue.size;	685	size = res_queue.size;
780	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	686	X_UNLOCK (reslock);
781		687
782	if (size)	688	if (size)
783	return;	689	return;
784		690
785	maybe_start_thread ();	691	etp_maybe_start_thread ();
786		692
787	FD_ZERO (&rfd);	693	s_epipe_wait (&respipe);
788	FD_SET (respipe [0], &rfd);
789
790	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
791	}	694	}
792	}	695	}
793		696
794	static int poll_cb ()	697	static int poll_cb (void)
795	{	698	{
796	dSP;
797	int count = 0;
798	int maxreqs = max_poll_reqs;
799	int do_croak = 0;
800	struct timeval tv_start, tv_now;
801	aio_req req;
802
803	if (max_poll_time)
804	gettimeofday (&tv_start, 0);
805
806	block_sig ();
807
808	for (;;)	699	for (;;)
809	{	700	{
810	for (;;)	701	int res = eio_poll ();
811	{
812	maybe_start_thread ();
813		702
814	X_LOCK (reslock);	703	if (res > 0)
815	req = reqq_shift (&res_queue);
816
817	if (req)
818	{
819	--npending;
820
821	if (!res_queue.size)
822	{
823	/* read any signals sent by the worker threads */
824	char buf [4];
825	while (respipe_read (respipe [0], buf, 4) == 4)
826	;
827	}
828	}
829
830	X_UNLOCK (reslock);
831
832	if (!req)
833	break;
834
835	--nreqs;
836
837	if (req->type == REQ_GROUP && req->size)
838	{
839	req->int1 = 1; /* mark request as delayed */
840	continue;
841	}
842	else
843	{
844	if (!req_invoke (req))
845	{
846	req_destroy (req);
847	unblock_sig ();
848	croak (0);	704	croak (0);
849	}
850		705
851	count++;	706	if (!max_outstanding || max_outstanding > eio_nreqs ())
852	}	707	return res;
853
854	req_destroy (req);
855
856	if (maxreqs && !--maxreqs)
857	break;
858
859	if (max_poll_time)
860	{
861	gettimeofday (&tv_now, 0);
862
863	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
864	break;
865	}
866	}
867
868	if (nreqs <= max_outstanding)
869	break;
870		708
871	poll_wait ();	709	poll_wait ();
872
873	++maxreqs;
874	}	710	}
		711	}
875		712
876	unblock_sig ();	713	static void atfork_child (void)
877	return count;	714	{
		715	create_respipe ();
878	}	716	}
879		717
880	/*****************************************************************************/	718	/*****************************************************************************/
881	/* work around various missing functions */
882		719
883	#if !HAVE_PREADWRITE	720	#if !_POSIX_MAPPED_FILES
884	# define pread aio_pread	721	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
885	# define pwrite aio_pwrite	722	# define munmap(addr,length) (errno = ENOSYS, -1)
886
887	/*
888	* make our pread/pwrite safe against themselves, but not against
889	* normal read/write by using a mutex. slows down execution a lot,
890	* but that's your problem, not mine.
891	*/
892	static mutex_t preadwritelock = X_MUTEX_INIT;
893
894	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
895	{
896	ssize_t res;
897	off_t ooffset;
898
899	X_LOCK (preadwritelock);
900	ooffset = lseek (fd, 0, SEEK_CUR);
901	lseek (fd, offset, SEEK_SET);
902	res = read (fd, buf, count);
903	lseek (fd, ooffset, SEEK_SET);
904	X_UNLOCK (preadwritelock);
905
906	return res;
907	}
908
909	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
910	{
911	ssize_t res;
912	off_t ooffset;
913
914	X_LOCK (preadwritelock);
915	ooffset = lseek (fd, 0, SEEK_CUR);
916	lseek (fd, offset, SEEK_SET);
917	res = write (fd, buf, count);
918	lseek (fd, offset, SEEK_SET);
919	X_UNLOCK (preadwritelock);
920
921	return res;
922	}
923	#endif
924
925	#ifndef HAVE_FUTIMES
926
927	# define utimes(path,times) aio_utimes (path, times)
928	# define futimes(fd,times) aio_futimes (fd, times)
929
930	int aio_utimes (const char *filename, const struct timeval times[2])
931	{
932	if (times)
933	{
934	struct utimbuf buf;
935
936	buf.actime = times[0].tv_sec;
937	buf.modtime = times[1].tv_sec;
938
939	return utime (filename, &buf);
940	}
941	else
942	return utime (filename, 0);
943	}
944
945	int aio_futimes (int fd, const struct timeval tv[2])
946	{
947	errno = ENOSYS;
948	return -1;
949	}
950
951	#endif
952
953	#if !HAVE_FDATASYNC
954	# define fdatasync fsync
955	#endif
956
957	#if !HAVE_READAHEAD
958	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
959
960	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
961	{
962	size_t todo = count;
963	dBUF;
964
965	while (todo > 0)
966	{
967	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
968
969	pread (fd, aio_buf, len, offset);
970	offset += len;
971	todo -= len;
972	}
973
974	errno = 0;
975	return count;
976	}
977
978	#endif
979
980	#if !HAVE_READDIR_R
981	# define readdir_r aio_readdir_r
982
983	static mutex_t readdirlock = X_MUTEX_INIT;
984
985	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
986	{
987	X_DIRENT *e;
988	int errorno;
989
990	X_LOCK (readdirlock);
991
992	e = readdir (dirp);
993	errorno = errno;
994
995	if (e)
996	{
997	*res = ent;
998	strcpy (ent->d_name, e->d_name);
999	}
1000	else
1001	*res = 0;
1002
1003	X_UNLOCK (readdirlock);
1004
1005	errno = errorno;
1006	return e ? 0 : -1;
1007	}
1008	#endif
1009
1010	/* sendfile always needs emulation */
1011	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1012	{
1013	ssize_t res;
1014
1015	if (!count)
1016	return 0;
1017
1018	#if HAVE_SENDFILE
1019	# if __linux
1020	res = sendfile (ofd, ifd, &offset, count);
1021
1022	# elif __freebsd
1023	/*
1024	* Of course, the freebsd sendfile is a dire hack with no thoughts
1025	* wasted on making it similar to other I/O functions.
1026	*/
1027	{
1028	off_t sbytes;
1029	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1030
1031	if (res < 0 && sbytes)
1032	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1033	res = sbytes;
1034	}
1035
1036	# elif __hpux
1037	res = sendfile (ofd, ifd, offset, count, 0, 0);
1038
1039	# elif __solaris
1040	{
1041	struct sendfilevec vec;
1042	size_t sbytes;
1043
1044	vec.sfv_fd = ifd;
1045	vec.sfv_flag = 0;
1046	vec.sfv_off = offset;
1047	vec.sfv_len = count;
1048
1049	res = sendfilev (ofd, &vec, 1, &sbytes);
1050
1051	if (res < 0 && sbytes)
1052	res = sbytes;
1053	}
1054
1055	# endif	723	#endif
1056	#else
1057	res = -1;
1058	errno = ENOSYS;
1059	#endif
1060		724
1061	if (res < 0	725	#if !_POSIX_MEMORY_PROTECTION
1062	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	726	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
1063	#if __solaris	727	# define PROT_NONE 0
1064	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	728	# define PROT_WRITE 0
		729	# define MAP_PRIVATE 0
		730	# define MAP_SHARED 0
		731	# define MAP_FIXED 0
1065	#endif	732	#endif
1066	)
1067	)
1068	{
1069	/* emulate sendfile. this is a major pain in the ass */
1070	dBUF;
1071		733
1072	res = 0;	734	#define MMAP_MAGIC PERL_MAGIC_ext
1073		735
1074	while (count)	736	static int
1075	{	737	mmap_free (pTHX_ SV *sv, MAGIC *mg)
1076	ssize_t cnt;	738	{
1077		739	int old_errno = errno;
1078	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);	740	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		741	errno = old_errno;
1079		742
1080	if (cnt <= 0)	743	mg->mg_obj = 0; /* just in case */
1081	{
1082	if (cnt && !res) res = -1;
1083	break;
1084	}
1085		744
1086	cnt = write (ofd, aio_buf, cnt);	745	SvREADONLY_off (sv);
1087		746
1088	if (cnt <= 0)	747	if (SvPVX (sv) != mg->mg_ptr)
1089	{	748	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1090	if (cnt && !res) res = -1;
1091	break;
1092	}
1093		749
1094	offset += cnt;	750	SvCUR_set (sv, 0);
1095	res += cnt;	751	SvPVX (sv) = 0;
1096	count -= cnt;	752	SvOK_off (sv);
1097	}
1098	}
1099		753
1100	return res;	754	return 0;
1101	}	755	}
1102		756
1103	/* read a full directory */	757	static MGVTBL mmap_vtbl = {
1104	static void scandir_ (aio_req req, worker *self)	758	0, 0, 0, 0, mmap_free
1105	{	759	};
1106	DIR *dirp;
1107	union
1108	{
1109	X_DIRENT d;
1110	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1111	} *u;
1112	X_DIRENT *entp;
1113	char *name, *names;
1114	int memlen = 4096;
1115	int memofs = 0;
1116	int res = 0;
1117
1118	X_LOCK (wrklock);
1119	self->dirp = dirp = opendir (req->ptr1);
1120	self->dbuf = u = malloc (sizeof (*u));
1121	req->flags |= FLAG_PTR2_FREE;
1122	req->ptr2 = names = malloc (memlen);
1123	X_UNLOCK (wrklock);
1124
1125	if (dirp && u && names)
1126	for (;;)
1127	{
1128	errno = 0;
1129	readdir_r (dirp, &u->d, &entp);
1130
1131	if (!entp)
1132	break;
1133
1134	name = entp->d_name;
1135
1136	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1137	{
1138	int len = strlen (name) + 1;
1139
1140	res++;
1141
1142	while (memofs + len > memlen)
1143	{
1144	memlen *= 2;
1145	X_LOCK (wrklock);
1146	req->ptr2 = names = realloc (names, memlen);
1147	X_UNLOCK (wrklock);
1148
1149	if (!names)
1150	break;
1151	}
1152
1153	memcpy (names + memofs, name, len);
1154	memofs += len;
1155	}
1156	}
1157
1158	if (errno)
1159	res = -1;
1160
1161	req->result = res;
1162	}
1163		760
1164	/*****************************************************************************/	761	/*****************************************************************************/
1165		762
1166	X_THREAD_PROC (aio_proc)	763	static SV *
		764	get_cb (SV *cb_sv)
1167	{	765	{
1168	{//D	766	SvGETMAGIC (cb_sv);
1169	aio_req req;	767	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1170	struct timespec ts;
1171	worker *self = (worker *)thr_arg;
1172
1173	/* try to distribute timeouts somewhat randomly */
1174	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1175
1176	for (;;)
1177	{
1178	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1179
1180	X_LOCK (reqlock);
1181
1182	for (;;)
1183	{
1184	self->req = req = reqq_shift (&req_queue);
1185
1186	if (req)
1187	break;
1188
1189	++idle;
1190
1191	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1192	== ETIMEDOUT)
1193	{
1194	if (idle > max_idle)
1195	{
1196	--idle;
1197	X_UNLOCK (reqlock);
1198	X_LOCK (wrklock);
1199	--started;
1200	X_UNLOCK (wrklock);
1201	goto quit;
1202	}
1203
1204	/* we are allowed to idle, so do so without any timeout */
1205	X_COND_WAIT (reqwait, reqlock);
1206	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1207	}
1208
1209	--idle;
1210	}
1211
1212	--nready;
1213
1214	X_UNLOCK (reqlock);
1215
1216	errno = 0; /* strictly unnecessary */
1217
1218	if (!(req->flags & FLAG_CANCELLED))
1219	switch (req->type)
1220	{
1221	case REQ_READ: req->result = req->offs >= 0
1222	? pread (req->int1, req->ptr1, req->size, req->offs)
1223	: read (req->int1, req->ptr1, req->size); break;
1224	case REQ_WRITE: req->result = req->offs >= 0
1225	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1226	: write (req->int1, req->ptr1, req->size); break;
1227
1228	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1229	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1230
1231	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1232	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1233	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1234
1235	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1236	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1237	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1238	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1239	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1240	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1241
1242	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1243	case REQ_CLOSE: req->result = close (req->int1); break;
1244	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1245	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1246	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1247	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1248	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1249	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1250	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1251	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1252
1253	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1254	case REQ_FSYNC: req->result = fsync (req->int1); break;
1255	case REQ_READDIR: scandir_ (req, self); break;
1256
1257	case REQ_BUSY:
1258	#ifdef _WIN32
1259	Sleep (req->nv1 * 1000.);
1260	#else
1261	{
1262	struct timeval tv;
1263
1264	tv.tv_sec = req->nv1;
1265	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1266
1267	req->result = select (0, 0, 0, 0, &tv);
1268	}
1269	#endif
1270	break;
1271
1272	case REQ_UTIME:
1273	case REQ_FUTIME:
1274	{
1275	struct timeval tv[2];
1276	struct timeval *times;
1277
1278	if (req->nv1 != -1. || req->nv2 != -1.)
1279	{
1280	tv[0].tv_sec = req->nv1;
1281	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1282	tv[1].tv_sec = req->nv2;
1283	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1284
1285	times = tv;
1286	}
1287	else
1288	times = 0;
1289
1290
1291	req->result = req->type == REQ_FUTIME
1292	? futimes (req->int1, times)
1293	: utimes (req->ptr1, times);
1294	}
1295
1296	case REQ_GROUP:
1297	case REQ_NOP:
1298	break;
1299
1300	case REQ_QUIT:
1301	goto quit;
1302
1303	default:
1304	req->result = -1;
1305	break;
1306	}
1307
1308	req->errorno = errno;
1309
1310	X_LOCK (reslock);
1311
1312	++npending;
1313
1314	if (!reqq_push (&res_queue, req))
1315	{
1316	/* write a dummy byte to the pipe so fh becomes ready */
1317	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1318
1319	/* optionally signal the main thread asynchronously */
1320	if (main_sig)
1321	pthread_kill (main_tid, main_sig);
1322	}
1323
1324	self->req = 0;
1325	worker_clear (self);
1326
1327	X_UNLOCK (reslock);
1328	}
1329
1330	quit:
1331	X_LOCK (wrklock);
1332	worker_free (self);
1333	X_UNLOCK (wrklock);
1334
1335	return 0;
1336	}//D
1337	}
1338
1339	/*****************************************************************************/
1340
1341	static void atfork_prepare (void)
1342	{
1343	X_LOCK (wrklock);
1344	X_LOCK (reqlock);
1345	X_LOCK (reslock);
1346	#if !HAVE_PREADWRITE
1347	X_LOCK (preadwritelock);
1348	#endif
1349	#if !HAVE_READDIR_R
1350	X_LOCK (readdirlock);
1351	#endif
1352	}
1353
1354	static void atfork_parent (void)
1355	{
1356	#if !HAVE_READDIR_R
1357	X_UNLOCK (readdirlock);
1358	#endif
1359	#if !HAVE_PREADWRITE
1360	X_UNLOCK (preadwritelock);
1361	#endif
1362	X_UNLOCK (reslock);
1363	X_UNLOCK (reqlock);
1364	X_UNLOCK (wrklock);
1365	}
1366
1367	static void atfork_child (void)
1368	{
1369	aio_req prv;
1370
1371	while (prv = reqq_shift (&req_queue))
1372	req_destroy (prv);
1373
1374	while (prv = reqq_shift (&res_queue))
1375	req_destroy (prv);
1376
1377	while (wrk_first.next != &wrk_first)
1378	{
1379	worker *wrk = wrk_first.next;
1380
1381	if (wrk->req)
1382	req_destroy (wrk->req);
1383
1384	worker_clear (wrk);
1385	worker_free (wrk);
1386	}
1387
1388	started = 0;
1389	idle = 0;
1390	nreqs = 0;
1391	nready = 0;
1392	npending = 0;
1393
1394	create_respipe ();
1395
1396	atfork_parent ();
1397	}	768	}
1398		769
1399	#define dREQ \	770	#define dREQ \
		771	SV *cb_cv; \
1400	aio_req req; \	772	aio_req req; \
1401	int req_pri = next_pri; \	773	int req_pri = next_pri; \
1402	next_pri = DEFAULT_PRI + PRI_BIAS; \	774	next_pri = EIO_PRI_DEFAULT; \
1403	\	775	\
1404	if (SvOK (callback) && !SvROK (callback)) \	776	cb_cv = get_cb (callback); \
1405	croak ("callback must be undef or of reference type"); \
1406	\	777	\
1407	Newz (0, req, 1, aio_cb); \	778	Newz (0, req, 1, eio_req); \
1408	if (!req) \	779	if (!req) \
1409	croak ("out of memory during aio_req allocation"); \	780	croak ("out of memory during eio_req allocation"); \
1410	\	781	\
1411	req->callback = newSVsv (callback); \	782	req->callback = SvREFCNT_inc (cb_cv); \
1412	req->pri = req_pri	783	req->pri = req_pri
1413		784
1414	#define REQ_SEND \	785	#define REQ_SEND \
		786	PUTBACK; \
1415	req_send (req); \	787	req_submit (req); \
		788	SPAGAIN; \
1416	\	789	\
1417	if (GIMME_V != G_VOID) \	790	if (GIMME_V != G_VOID) \
1418	XPUSHs (req_sv (req, AIO_REQ_KLASS));	791	XPUSHs (req_sv (req, aio_req_stash));
1419		792
1420	MODULE = IO::AIO PACKAGE = IO::AIO	793	MODULE = IO::AIO PACKAGE = IO::AIO
1421		794
1422	PROTOTYPES: ENABLE	795	PROTOTYPES: ENABLE
1423		796
1424	BOOT:	797	BOOT:
1425	{	798	{
		799	static const struct {
		800	const char *name;
		801	IV iv;
		802	} *civ, const_iv[] = {
		803	# define const_niv(name, value) { # name, (IV) value },
		804	# define const_iv(name) { # name, (IV) name },
		805	# define const_eio(name) { # name, (IV) EIO_ ## name },
		806	const_iv (EXDEV)
		807	const_iv (ENOSYS)
		808	const_iv (O_RDONLY)
		809	const_iv (O_WRONLY)
		810	const_iv (O_RDWR)
		811	const_iv (O_CREAT)
		812	const_iv (O_TRUNC)
		813	const_iv (O_EXCL)
		814	const_iv (O_APPEND)
		815
		816	const_iv (O_ASYNC)
		817	const_iv (O_DIRECT)
		818	const_iv (O_NOATIME)
		819
		820	const_iv (O_CLOEXEC)
		821	const_iv (O_NOCTTY)
		822	const_iv (O_NOFOLLOW)
		823	const_iv (O_NONBLOCK)
		824	const_iv (O_EXEC)
		825	const_iv (O_SEARCH)
		826	const_iv (O_DIRECTORY)
		827	const_iv (O_DSYNC)
		828	const_iv (O_RSYNC)
		829	const_iv (O_SYNC)
		830	const_iv (O_TTY_INIT)
		831
		832	const_iv (S_IFIFO)
		833	const_iv (S_IFCHR)
		834	const_iv (S_IFBLK)
		835	const_iv (S_IFLNK)
		836	const_iv (S_IFREG)
		837	const_iv (S_IFDIR)
		838	const_iv (S_IFWHT)
		839	const_iv (S_IFSOCK)
		840	const_iv (S_IFMT)
		841
		842	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		843	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		844	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		845	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		846	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		847	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		848
		849	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		850	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		851	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		852	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		853	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		854
		855	const_iv (ST_RDONLY)
		856	const_iv (ST_NOSUID)
		857	const_iv (ST_NODEV)
		858	const_iv (ST_NOEXEC)
		859	const_iv (ST_SYNCHRONOUS)
		860	const_iv (ST_MANDLOCK)
		861	const_iv (ST_WRITE)
		862	const_iv (ST_APPEND)
		863	const_iv (ST_IMMUTABLE)
		864	const_iv (ST_NOATIME)
		865	const_iv (ST_NODIRATIME)
		866	const_iv (ST_RELATIME)
		867
		868	const_iv (PROT_NONE)
		869	const_iv (PROT_EXEC)
		870	const_iv (PROT_READ)
		871	const_iv (PROT_WRITE)
		872
		873	/*const_iv (MAP_FIXED)*/
		874	const_iv (MAP_PRIVATE)
		875	const_iv (MAP_SHARED)
		876	const_iv (MAP_ANONYMOUS)
		877
		878	/* linuxish */
		879	const_iv (MAP_HUGETLB)
		880	const_iv (MAP_LOCKED)
		881	const_iv (MAP_NORESERVE)
		882	const_iv (MAP_POPULATE)
		883	const_iv (MAP_NONBLOCK)
		884
		885	const_eio (MCL_FUTURE)
		886	const_eio (MCL_CURRENT)
		887
		888	const_eio (MS_ASYNC)
		889	const_eio (MS_INVALIDATE)
		890	const_eio (MS_SYNC)
		891
		892	const_eio (MT_MODIFY)
		893
		894	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		895	const_eio (SYNC_FILE_RANGE_WRITE)
		896	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		897
		898	const_eio (READDIR_DENTS)
		899	const_eio (READDIR_DIRS_FIRST)
		900	const_eio (READDIR_STAT_ORDER)
		901	const_eio (READDIR_FOUND_UNKNOWN)
		902
		903	const_eio (DT_UNKNOWN)
		904	const_eio (DT_FIFO)
		905	const_eio (DT_CHR)
		906	const_eio (DT_DIR)
		907	const_eio (DT_BLK)
		908	const_eio (DT_REG)
		909	const_eio (DT_LNK)
		910	const_eio (DT_SOCK)
		911	const_eio (DT_WHT)
		912	};
		913
1426	HV *stash = gv_stashpv ("IO::AIO", 1);	914	aio_stash = gv_stashpv ("IO::AIO" , 1);
		915	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		916	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1427		917
1428	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	918	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1429	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	919	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1430	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1431	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1432	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1433	#ifdef _WIN32
1434	X_MUTEX_CHECK (wrklock);
1435	X_MUTEX_CHECK (reslock);
1436	X_MUTEX_CHECK (reqlock);
1437	X_MUTEX_CHECK (reqwait);
1438	X_MUTEX_CHECK (preadwritelock);
1439	X_MUTEX_CHECK (readdirlock);
1440		920
1441	X_COND_CHECK (reqwait);	921	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1442	#else
1443	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1444	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1445	#endif
1446		922
1447	create_respipe ();	923	create_respipe ();
1448		924
1449	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	925	if (eio_init (want_poll, done_poll) < 0)
1450	}	926	croak ("IO::AIO: unable to initialise eio library");
1451		927
		928	/* atfork child called in fifo order, so before eio's handler */
		929	X_THREAD_ATFORK (0, 0, atfork_child);
		930	}
		931
1452	void	932	void
1453	max_poll_reqs (int nreqs)	933	max_poll_reqs (unsigned int nreqs)
1454	PROTOTYPE: $	934	PROTOTYPE: $
1455	CODE:	935	CODE:
1456	max_poll_reqs = nreqs;	936	eio_set_max_poll_reqs (nreqs);
1457		937
1458	void	938	void
1459	max_poll_time (double nseconds)	939	max_poll_time (double nseconds)
1460	PROTOTYPE: $	940	PROTOTYPE: $
1461	CODE:	941	CODE:
1462	max_poll_time = nseconds * AIO_TICKS;	942	eio_set_max_poll_time (nseconds);
1463		943
1464	void	944	void
1465	min_parallel (int nthreads)	945	min_parallel (unsigned int nthreads)
1466	PROTOTYPE: $
1467
1468	void
1469	max_parallel (int nthreads)
1470	PROTOTYPE: $
1471
1472	void
1473	max_idle (int nthreads)
1474	PROTOTYPE: $	946	PROTOTYPE: $
1475	CODE:	947	CODE:
1476	set_max_idle (nthreads);	948	eio_set_min_parallel (nthreads);
1477		949
1478	int	950	void
1479	max_outstanding (int maxreqs)	951	max_parallel (unsigned int nthreads)
1480	PROTOTYPE: $	952	PROTOTYPE: $
1481	CODE:	953	CODE:
1482	RETVAL = max_outstanding;	954	eio_set_max_parallel (nthreads);
		955
		956	void
		957	max_idle (unsigned int nthreads)
		958	PROTOTYPE: $
		959	CODE:
		960	eio_set_max_idle (nthreads);
		961
		962	void
		963	idle_timeout (unsigned int seconds)
		964	PROTOTYPE: $
		965	CODE:
		966	eio_set_idle_timeout (seconds);
		967
		968	void
		969	max_outstanding (unsigned int maxreqs)
		970	PROTOTYPE: $
		971	CODE:
1483	max_outstanding = maxreqs;	972	max_outstanding = maxreqs;
1484	OUTPUT:
1485	RETVAL
1486		973
1487	void	974	void
1488	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	975	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1489	PROTOTYPE: $$$;$
1490	PPCODE:	976	PPCODE:
1491	{	977	{
1492	dREQ;	978	dREQ;
1493		979
1494	req->type = REQ_OPEN;	980	req->type = EIO_OPEN;
1495	req->sv1 = newSVsv (pathname);	981	req->sv1 = newSVsv (pathname);
1496	req->ptr1 = SvPVbyte_nolen (req->sv1);	982	req->ptr1 = SvPVbyte_nolen (req->sv1);
1497	req->int1 = flags;	983	req->int1 = flags;
1498	req->mode = mode;	984	req->int2 = mode;
1499		985
1500	REQ_SEND;	986	REQ_SEND;
1501	}	987	}
1502		988
1503	void	989	void
1504	aio_close (SV *fh, SV *callback=&PL_sv_undef)	990	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1505	PROTOTYPE: $;$
1506	ALIAS:	991	ALIAS:
1507	aio_close = REQ_CLOSE
1508	aio_fsync = REQ_FSYNC	992	aio_fsync = EIO_FSYNC
1509	aio_fdatasync = REQ_FDATASYNC	993	aio_fdatasync = EIO_FDATASYNC
1510	PPCODE:	994	PPCODE:
1511	{	995	{
		996	int fd = s_fileno_croak (fh, 0);
1512	dREQ;	997	dREQ;
1513		998
1514	req->type = ix;	999	req->type = ix;
1515	req->sv1 = newSVsv (fh);	1000	req->sv1 = newSVsv (fh);
1516	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1001	req->int1 = fd;
		1002
		1003	REQ_SEND (req);
		1004	}
		1005
		1006	void
		1007	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1008	PPCODE:
		1009	{
		1010	int fd = s_fileno_croak (fh, 0);
		1011	dREQ;
		1012
		1013	req->type = EIO_SYNC_FILE_RANGE;
		1014	req->sv1 = newSVsv (fh);
		1015	req->int1 = fd;
		1016	req->offs = offset;
		1017	req->size = nbytes;
		1018	req->int2 = flags;
		1019
		1020	REQ_SEND (req);
		1021	}
		1022
		1023	void
		1024	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1025	PPCODE:
		1026	{
		1027	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		1028	int fd = s_fileno_croak (fh, 0);
		1029	dREQ;
		1030
		1031	if (close_pipe < 0)
		1032	{
		1033	int pipefd [2];
		1034
		1035	if (pipe (pipefd) < 0
		1036	|| close (pipefd [1]) < 0
		1037	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1038	abort (); /*D*/
		1039
		1040	close_pipe = pipefd [0];
		1041	}
		1042
		1043	req->type = EIO_DUP2;
		1044	req->int1 = close_pipe;
		1045	req->sv2 = newSVsv (fh);
		1046	req->int2 = fd;
1517		1047
1518	REQ_SEND (req);	1048	REQ_SEND (req);
1519	}	1049	}
1520		1050
1521	void	1051	void
1522	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1052	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1523	ALIAS:	1053	ALIAS:
1524	aio_read = REQ_READ	1054	aio_read = EIO_READ
1525	aio_write = REQ_WRITE	1055	aio_write = EIO_WRITE
1526	PROTOTYPE: $$$$$;$
1527	PPCODE:	1056	PPCODE:
1528	{	1057	{
1529	STRLEN svlen;	1058	STRLEN svlen;
		1059	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1530	char *svptr = SvPVbyte (data, svlen);	1060	char *svptr = SvPVbyte (data, svlen);
1531	UV len = SvUV (length);	1061	UV len = SvUV (length);
1532		1062
1533	SvUPGRADE (data, SVt_PV);
1534	SvPOK_on (data);
1535
1536	if (dataoffset < 0)	1063	if (dataoffset < 0)
1537	dataoffset += svlen;	1064	dataoffset += svlen;
1538		1065
1539	if (dataoffset < 0 || dataoffset > svlen)	1066	if (dataoffset < 0 || dataoffset > svlen)
1540	croak ("dataoffset outside of data scalar");	1067	croak ("dataoffset outside of data scalar");
1541		1068
1542	if (ix == REQ_WRITE)	1069	if (ix == EIO_WRITE)
1543	{	1070	{
1544	/* write: check length and adjust. */	1071	/* write: check length and adjust. */
1545	if (!SvOK (length) || len + dataoffset > svlen)	1072	if (!SvOK (length) || len + dataoffset > svlen)
1546	len = svlen - dataoffset;	1073	len = svlen - dataoffset;
1547	}	1074	}
1548	else	1075	else
1549	{	1076	{
1550	/* read: grow scalar as necessary */	1077	/* read: check type and grow scalar as necessary */
		1078	SvUPGRADE (data, SVt_PV);
1551	svptr = SvGROW (data, len + dataoffset + 1);	1079	svptr = SvGROW (data, len + dataoffset + 1);
1552	}	1080	}
1553		1081
1554	if (len < 0)
1555	croak ("length must not be negative");
1556
1557	{	1082	{
1558	dREQ;	1083	dREQ;
1559		1084
1560	req->type = ix;	1085	req->type = ix;
1561	req->sv1 = newSVsv (fh);	1086	req->sv1 = newSVsv (fh);
1562	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1087	req->int1 = fd;
1563	: IoOFP (sv_2io (fh)));
1564	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1088	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1565	req->size = len;	1089	req->size = len;
1566	req->sv2 = SvREFCNT_inc (data);	1090	req->sv2 = SvREFCNT_inc (data);
1567	req->ptr1 = (char *)svptr + dataoffset;	1091	req->ptr2 = (char *)svptr + dataoffset;
1568	req->stroffset = dataoffset;	1092	req->stroffset = dataoffset;
1569		1093
1570	if (!SvREADONLY (data))	1094	if (!SvREADONLY (data))
1571	{	1095	{
1572	SvREADONLY_on (data);	1096	SvREADONLY_on (data);
…		…
1577	}	1101	}
1578	}	1102	}
1579		1103
1580	void	1104	void
1581	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1105	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1582	PROTOTYPE: $$;$
1583	PPCODE:	1106	PPCODE:
1584	{	1107	{
1585	SV *data;	1108	SV *data;
1586	dREQ;	1109	dREQ;
1587		1110
1588	data = newSV (NAME_MAX);
1589	SvPOK_on (data);
1590
1591	req->type = REQ_READLINK;	1111	req->type = EIO_READLINK;
1592	req->sv1 = newSVsv (path);	1112	req->sv1 = newSVsv (path);
1593	req->ptr2 = SvPVbyte_nolen (req->sv1);	1113	req->ptr1 = SvPVbyte_nolen (req->sv1);
1594	req->sv2 = data;
1595	req->ptr1 = SvPVbyte_nolen (data);
1596		1114
1597	REQ_SEND;	1115	REQ_SEND;
1598	}	1116	}
1599		1117
1600	void	1118	void
1601	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1119	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1602	PROTOTYPE: $$$$;$
1603	PPCODE:	1120	PPCODE:
1604	{	1121	{
		1122	int ifd = s_fileno_croak (in_fh , 0);
		1123	int ofd = s_fileno_croak (out_fh, 1);
1605	dREQ;	1124	dREQ;
1606		1125
1607	req->type = REQ_SENDFILE;	1126	req->type = EIO_SENDFILE;
1608	req->sv1 = newSVsv (out_fh);	1127	req->sv1 = newSVsv (out_fh);
1609	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1128	req->int1 = ofd;
1610	req->sv2 = newSVsv (in_fh);	1129	req->sv2 = newSVsv (in_fh);
1611	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1130	req->int2 = ifd;
1612	req->offs = SvVAL64 (in_offset);	1131	req->offs = in_offset;
1613	req->size = length;	1132	req->size = length;
1614		1133
1615	REQ_SEND;	1134	REQ_SEND;
1616	}	1135	}
1617		1136
1618	void	1137	void
1619	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1138	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1620	PROTOTYPE: $$$;$
1621	PPCODE:	1139	PPCODE:
1622	{	1140	{
		1141	int fd = s_fileno_croak (fh, 0);
1623	dREQ;	1142	dREQ;
1624		1143
1625	req->type = REQ_READAHEAD;	1144	req->type = EIO_READAHEAD;
1626	req->sv1 = newSVsv (fh);	1145	req->sv1 = newSVsv (fh);
1627	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1146	req->int1 = fd;
1628	req->offs = SvVAL64 (offset);	1147	req->offs = offset;
1629	req->size = length;	1148	req->size = length;
1630		1149
1631	REQ_SEND;	1150	REQ_SEND;
1632	}	1151	}
1633		1152
1634	void	1153	void
1635	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1154	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1636	ALIAS:	1155	ALIAS:
1637	aio_stat = REQ_STAT	1156	aio_stat = EIO_STAT
1638	aio_lstat = REQ_LSTAT	1157	aio_lstat = EIO_LSTAT
		1158	aio_statvfs = EIO_STATVFS
1639	PPCODE:	1159	PPCODE:
1640	{	1160	{
1641	dREQ;	1161	dREQ;
1642		1162
1643	req->ptr2 = malloc (sizeof (Stat_t));
1644	if (!req->ptr2)
1645	{
1646	req_destroy (req);
1647	croak ("out of memory during aio_stat statdata allocation");
1648	}
1649
1650	req->flags |= FLAG_PTR2_FREE;
1651	req->sv1 = newSVsv (fh_or_path);	1163	req->sv1 = newSVsv (fh_or_path);
1652		1164
1653	if (SvPOK (fh_or_path))	1165	if (SvPOK (req->sv1))
1654	{	1166	{
1655	req->type = ix;	1167	req->type = ix;
1656	req->ptr1 = SvPVbyte_nolen (req->sv1);	1168	req->ptr1 = SvPVbyte_nolen (req->sv1);
1657	}	1169	}
1658	else	1170	else
1659	{	1171	{
1660	req->type = REQ_FSTAT;	1172	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1661	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1173	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1662	}	1174	}
1663		1175
1664	REQ_SEND;	1176	REQ_SEND;
1665	}	1177	}
		1178
		1179	UV
		1180	major (UV dev)
		1181	ALIAS:
		1182	minor = 1
		1183	CODE:
		1184	RETVAL = ix ? major (dev) : minor (dev);
		1185	OUTPUT:
		1186	RETVAL
		1187
		1188	UV
		1189	makedev (UV maj, UV min)
		1190	CODE:
		1191	RETVAL = makedev (maj, min);
		1192	OUTPUT:
		1193	RETVAL
1666		1194
1667	void	1195	void
1668	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1196	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1669	PPCODE:	1197	PPCODE:
1670	{	1198	{
…		…
1672		1200
1673	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1201	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1674	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1202	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1675	req->sv1 = newSVsv (fh_or_path);	1203	req->sv1 = newSVsv (fh_or_path);
1676		1204
1677	if (SvPOK (fh_or_path))	1205	if (SvPOK (req->sv1))
1678	{	1206	{
1679	req->type = REQ_UTIME;	1207	req->type = EIO_UTIME;
1680	req->ptr1 = SvPVbyte_nolen (req->sv1);	1208	req->ptr1 = SvPVbyte_nolen (req->sv1);
1681	}	1209	}
1682	else	1210	else
1683	{	1211	{
1684	req->type = REQ_FUTIME;	1212	req->type = EIO_FUTIME;
1685	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1213	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1686	}	1214	}
1687		1215
1688	REQ_SEND;	1216	REQ_SEND;
1689	}	1217	}
…		…
1695	dREQ;	1223	dREQ;
1696		1224
1697	req->sv1 = newSVsv (fh_or_path);	1225	req->sv1 = newSVsv (fh_or_path);
1698	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1226	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1699		1227
1700	if (SvPOK (fh_or_path))	1228	if (SvPOK (req->sv1))
1701	{	1229	{
1702	req->type = REQ_TRUNCATE;	1230	req->type = EIO_TRUNCATE;
1703	req->ptr1 = SvPVbyte_nolen (req->sv1);	1231	req->ptr1 = SvPVbyte_nolen (req->sv1);
1704	}	1232	}
1705	else	1233	else
1706	{	1234	{
1707	req->type = REQ_FTRUNCATE;	1235	req->type = EIO_FTRUNCATE;
1708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1236	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1709	}	1237	}
1710		1238
1711	REQ_SEND;	1239	REQ_SEND;
1712	}	1240	}
1713		1241
1714	void	1242	void
1715	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1243	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1244	ALIAS:
		1245	aio_chmod = EIO_CHMOD
		1246	aio_mkdir = EIO_MKDIR
1716	PPCODE:	1247	PPCODE:
1717	{	1248	{
1718	dREQ;	1249	dREQ;
1719		1250
1720	req->mode = mode;	1251	req->int2 = mode;
1721	req->sv1 = newSVsv (fh_or_path);	1252	req->sv1 = newSVsv (fh_or_path);
1722		1253
1723	if (SvPOK (fh_or_path))	1254	if (SvPOK (req->sv1))
1724	{	1255	{
1725	req->type = REQ_CHMOD;	1256	req->type = ix;
1726	req->ptr1 = SvPVbyte_nolen (req->sv1);	1257	req->ptr1 = SvPVbyte_nolen (req->sv1);
1727	}	1258	}
1728	else	1259	else
1729	{	1260	{
1730	req->type = REQ_FCHMOD;	1261	req->type = EIO_FCHMOD;
1731	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1262	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1732	}	1263	}
1733		1264
1734	REQ_SEND;	1265	REQ_SEND;
1735	}	1266	}
…		…
1742		1273
1743	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1274	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1744	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1275	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1745	req->sv1 = newSVsv (fh_or_path);	1276	req->sv1 = newSVsv (fh_or_path);
1746		1277
1747	if (SvPOK (fh_or_path))	1278	if (SvPOK (req->sv1))
1748	{	1279	{
1749	req->type = REQ_CHOWN;	1280	req->type = EIO_CHOWN;
1750	req->ptr1 = SvPVbyte_nolen (req->sv1);	1281	req->ptr1 = SvPVbyte_nolen (req->sv1);
1751	}	1282	}
1752	else	1283	else
1753	{	1284	{
1754	req->type = REQ_FCHOWN;	1285	req->type = EIO_FCHOWN;
1755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1286	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1756	}	1287	}
1757		1288
1758	REQ_SEND;	1289	REQ_SEND;
1759	}	1290	}
1760		1291
1761	void	1292	void
		1293	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1294	PPCODE:
		1295	{
		1296	dREQ;
		1297
		1298	req->type = EIO_READDIR;
		1299	req->sv1 = newSVsv (pathname);
		1300	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1301	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1302
		1303	if (flags & EIO_READDIR_DENTS)
		1304	req->int1 |= EIO_READDIR_CUSTOM2;
		1305
		1306	REQ_SEND;
		1307	}
		1308
		1309	void
1762	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1310	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1763	ALIAS:	1311	ALIAS:
1764	aio_unlink = REQ_UNLINK	1312	aio_unlink = EIO_UNLINK
1765	aio_rmdir = REQ_RMDIR	1313	aio_rmdir = EIO_RMDIR
1766	aio_readdir = REQ_READDIR	1314	aio_readdir = EIO_READDIR
1767	PPCODE:	1315	PPCODE:
1768	{	1316	{
1769	dREQ;	1317	dREQ;
1770		1318
1771	req->type = ix;	1319	req->type = ix;
…		…
1774		1322
1775	REQ_SEND;	1323	REQ_SEND;
1776	}	1324	}
1777		1325
1778	void	1326	void
1779	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1780	PPCODE:
1781	{
1782	dREQ;
1783
1784	req->type = REQ_MKDIR;
1785	req->sv1 = newSVsv (pathname);
1786	req->ptr1 = SvPVbyte_nolen (req->sv1);
1787	req->mode = mode;
1788
1789	REQ_SEND;
1790	}
1791
1792	void
1793	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1327	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1794	ALIAS:	1328	ALIAS:
1795	aio_link = REQ_LINK	1329	aio_link = EIO_LINK
1796	aio_symlink = REQ_SYMLINK	1330	aio_symlink = EIO_SYMLINK
1797	aio_rename = REQ_RENAME	1331	aio_rename = EIO_RENAME
1798	PPCODE:	1332	PPCODE:
1799	{	1333	{
1800	dREQ;	1334	dREQ;
1801		1335
1802	req->type = ix;	1336	req->type = ix;
1803	req->sv2 = newSVsv (oldpath);	1337	req->sv1 = newSVsv (oldpath);
		1338	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1339	req->sv2 = newSVsv (newpath);
1804	req->ptr2 = SvPVbyte_nolen (req->sv2);	1340	req->ptr2 = SvPVbyte_nolen (req->sv2);
1805	req->sv1 = newSVsv (newpath);
1806	req->ptr1 = SvPVbyte_nolen (req->sv1);
1807		1341
1808	REQ_SEND;	1342	REQ_SEND;
1809	}	1343	}
1810		1344
1811	void	1345	void
1812	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1346	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1813	PPCODE:	1347	PPCODE:
1814	{	1348	{
1815	dREQ;	1349	dREQ;
1816		1350
1817	req->type = REQ_MKNOD;	1351	req->type = EIO_MKNOD;
1818	req->sv1 = newSVsv (pathname);	1352	req->sv1 = newSVsv (pathname);
1819	req->ptr1 = SvPVbyte_nolen (req->sv1);	1353	req->ptr1 = SvPVbyte_nolen (req->sv1);
1820	req->mode = (mode_t)mode;	1354	req->int2 = (mode_t)mode;
1821	req->offs = dev;	1355	req->offs = dev;
1822		1356
1823	REQ_SEND;	1357	REQ_SEND;
1824	}	1358	}
1825		1359
1826	void	1360	void
		1361	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1362	ALIAS:
		1363	aio_mtouch = EIO_MTOUCH
		1364	aio_msync = EIO_MSYNC
		1365	PPCODE:
		1366	{
		1367	STRLEN svlen;
		1368	char *svptr = SvPVbyte (data, svlen);
		1369	UV len = SvUV (length);
		1370
		1371	if (offset < 0)
		1372	offset += svlen;
		1373
		1374	if (offset < 0 || offset > svlen)
		1375	croak ("offset outside of scalar");
		1376
		1377	if (!SvOK (length) || len + offset > svlen)
		1378	len = svlen - offset;
		1379
		1380	{
		1381	dREQ;
		1382
		1383	req->type = ix;
		1384	req->sv2 = SvREFCNT_inc (data);
		1385	req->ptr2 = (char *)svptr + offset;
		1386	req->size = len;
		1387	req->int1 = flags;
		1388
		1389	REQ_SEND;
		1390	}
		1391	}
		1392
		1393	void
		1394	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1395	PPCODE:
		1396	{
		1397	STRLEN svlen;
		1398	char *svptr = SvPVbyte (data, svlen);
		1399	UV len = SvUV (length);
		1400
		1401	if (offset < 0)
		1402	offset += svlen;
		1403
		1404	if (offset < 0 || offset > svlen)
		1405	croak ("offset outside of scalar");
		1406
		1407	if (!SvOK (length) || len + offset > svlen)
		1408	len = svlen - offset;
		1409
		1410	{
		1411	dREQ;
		1412
		1413	req->type = EIO_MLOCK;
		1414	req->sv2 = SvREFCNT_inc (data);
		1415	req->ptr2 = (char *)svptr + offset;
		1416	req->size = len;
		1417
		1418	REQ_SEND;
		1419	}
		1420	}
		1421
		1422	void
		1423	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1424	PPCODE:
		1425	{
		1426	dREQ;
		1427
		1428	req->type = EIO_MLOCKALL;
		1429	req->int1 = flags;
		1430
		1431	REQ_SEND;
		1432	}
		1433
		1434	void
1827	aio_busy (double delay, SV *callback=&PL_sv_undef)	1435	aio_busy (double delay, SV *callback=&PL_sv_undef)
1828	PPCODE:	1436	PPCODE:
1829	{	1437	{
1830	dREQ;	1438	dREQ;
1831		1439
1832	req->type = REQ_BUSY;	1440	req->type = EIO_BUSY;
1833	req->nv1 = delay < 0. ? 0. : delay;	1441	req->nv1 = delay < 0. ? 0. : delay;
1834		1442
1835	REQ_SEND;	1443	REQ_SEND;
1836	}	1444	}
1837		1445
1838	void	1446	void
1839	aio_group (SV *callback=&PL_sv_undef)	1447	aio_group (SV *callback=&PL_sv_undef)
1840	PROTOTYPE: ;$
1841	PPCODE:	1448	PPCODE:
1842	{	1449	{
1843	dREQ;	1450	dREQ;
1844		1451
1845	req->type = REQ_GROUP;	1452	req->type = EIO_GROUP;
1846		1453
1847	req_send (req);	1454	req_submit (req);
1848	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1455	XPUSHs (req_sv (req, aio_grp_stash));
1849	}	1456	}
1850		1457
1851	void	1458	void
1852	aio_nop (SV *callback=&PL_sv_undef)	1459	aio_nop (SV *callback=&PL_sv_undef)
		1460	ALIAS:
		1461	aio_nop = EIO_NOP
		1462	aio_sync = EIO_SYNC
1853	PPCODE:	1463	PPCODE:
1854	{	1464	{
1855	dREQ;	1465	dREQ;
1856		1466
1857	req->type = REQ_NOP;	1467	req->type = ix;
1858		1468
1859	REQ_SEND;	1469	REQ_SEND;
1860	}	1470	}
1861		1471
1862	int	1472	int
1863	aioreq_pri (int pri = 0)	1473	aioreq_pri (int pri = 0)
1864	PROTOTYPE: ;$
1865	CODE:	1474	CODE:
1866	RETVAL = next_pri - PRI_BIAS;	1475	RETVAL = next_pri;
1867	if (items > 0)	1476	if (items > 0)
1868	{	1477	{
1869	if (pri < PRI_MIN) pri = PRI_MIN;	1478	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1870	if (pri > PRI_MAX) pri = PRI_MAX;	1479	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1871	next_pri = pri + PRI_BIAS;	1480	next_pri = pri;
1872	}	1481	}
1873	OUTPUT:	1482	OUTPUT:
1874	RETVAL	1483	RETVAL
1875		1484
1876	void	1485	void
1877	aioreq_nice (int nice = 0)	1486	aioreq_nice (int nice = 0)
1878	CODE:	1487	CODE:
1879	nice = next_pri - nice;	1488	nice = next_pri - nice;
1880	if (nice < PRI_MIN) nice = PRI_MIN;	1489	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1881	if (nice > PRI_MAX) nice = PRI_MAX;	1490	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1882	next_pri = nice + PRI_BIAS;	1491	next_pri = nice;
1883		1492
1884	void	1493	void
1885	flush ()	1494	flush ()
1886	PROTOTYPE:
1887	CODE:	1495	CODE:
1888	while (nreqs)	1496	while (eio_nreqs ())
1889	{	1497	{
1890	poll_wait ();	1498	poll_wait ();
1891	poll_cb ();	1499	poll_cb ();
1892	}	1500	}
1893		1501
1894	int	1502	int
1895	poll()	1503	poll ()
1896	PROTOTYPE:
1897	CODE:	1504	CODE:
1898	poll_wait ();	1505	poll_wait ();
1899	RETVAL = poll_cb ();	1506	RETVAL = poll_cb ();
1900	OUTPUT:	1507	OUTPUT:
1901	RETVAL	1508	RETVAL
1902		1509
1903	int	1510	int
1904	poll_fileno()	1511	poll_fileno ()
1905	PROTOTYPE:
1906	CODE:	1512	CODE:
1907	RETVAL = respipe [0];	1513	RETVAL = s_epipe_fd (&respipe);
1908	OUTPUT:	1514	OUTPUT:
1909	RETVAL	1515	RETVAL
1910		1516
1911	int	1517	int
1912	poll_cb(...)	1518	poll_cb (...)
1913	PROTOTYPE:	1519	PROTOTYPE:
1914	CODE:	1520	CODE:
1915	RETVAL = poll_cb ();	1521	RETVAL = poll_cb ();
1916	OUTPUT:	1522	OUTPUT:
1917	RETVAL	1523	RETVAL
1918		1524
1919	void	1525	void
1920	poll_wait()	1526	poll_wait ()
1921	PROTOTYPE:
1922	CODE:	1527	CODE:
1923	poll_wait ();	1528	poll_wait ();
1924		1529
1925	void
1926	setsig (int signum = SIGIO)
1927	PROTOTYPE: ;$
1928	CODE:
1929	{
1930	if (block_sig_level)
1931	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1932
1933	X_LOCK (reslock);
1934	main_tid = pthread_self ();
1935	main_sig = signum;
1936	X_UNLOCK (reslock);
1937
1938	if (main_sig && npending)
1939	pthread_kill (main_tid, main_sig);
1940	}
1941
1942	void
1943	aio_block (SV *cb)
1944	PROTOTYPE: &
1945	PPCODE:
1946	{
1947	int count;
1948
1949	block_sig ();
1950	PUSHMARK (SP);
1951	PUTBACK;
1952	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1953	SPAGAIN;
1954	unblock_sig ();
1955
1956	if (SvTRUE (ERRSV))
1957	croak (0);
1958
1959	XSRETURN (count);
1960	}
1961
1962	int	1530	int
1963	nreqs()	1531	nreqs ()
1964	PROTOTYPE:
1965	CODE:	1532	CODE:
1966	RETVAL = nreqs;	1533	RETVAL = eio_nreqs ();
1967	OUTPUT:	1534	OUTPUT:
1968	RETVAL	1535	RETVAL
1969		1536
1970	int	1537	int
1971	nready()	1538	nready ()
1972	PROTOTYPE:
1973	CODE:	1539	CODE:
1974	RETVAL = get_nready ();	1540	RETVAL = eio_nready ();
1975	OUTPUT:	1541	OUTPUT:
1976	RETVAL	1542	RETVAL
1977		1543
1978	int	1544	int
1979	npending()	1545	npending ()
1980	PROTOTYPE:
1981	CODE:	1546	CODE:
1982	RETVAL = get_npending ();	1547	RETVAL = eio_npending ();
1983	OUTPUT:	1548	OUTPUT:
1984	RETVAL	1549	RETVAL
1985		1550
1986	int	1551	int
1987	nthreads()	1552	nthreads ()
1988	PROTOTYPE:
1989	CODE:	1553	CODE:
1990	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1554	RETVAL = eio_nthreads ();
1991	RETVAL = started;
1992	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1993	OUTPUT:	1555	OUTPUT:
1994	RETVAL	1556	RETVAL
1995		1557
		1558	int
		1559	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1560	CODE:
		1561	RETVAL = posix_fadvise (fh, offset, length, advice);
		1562	OUTPUT:
		1563	RETVAL
		1564
		1565	ssize_t
		1566	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1567	CODE:
		1568	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1569	OUTPUT:
		1570	RETVAL
		1571
		1572	void
		1573	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1574	PPCODE:
		1575	sv_unmagic (scalar, MMAP_MAGIC);
		1576	{
		1577	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1578	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1579	if (addr == (void *)-1)
		1580	XSRETURN_NO;
		1581
		1582	sv_force_normal (scalar);
		1583
		1584	/* we store the length in mg_obj, as namlen is I32 :/ */
		1585	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1586	->mg_obj = (SV *)length;
		1587
		1588	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1589
		1590	if (!(prot & PROT_WRITE))
		1591	SvREADONLY_on (scalar);
		1592
		1593	if (SvLEN (scalar))
		1594	Safefree (SvPVX (scalar));
		1595
		1596	SvPVX (scalar) = (char *)addr;
		1597	SvCUR_set (scalar, length);
		1598	SvLEN_set (scalar, 0);
		1599	SvPOK_only (scalar);
		1600
		1601	XSRETURN_YES;
		1602	}
		1603
		1604	void
		1605	munmap (SV *scalar)
		1606	CODE:
		1607	sv_unmagic (scalar, MMAP_MAGIC);
		1608
		1609	int
		1610	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1611	ALIAS:
		1612	mprotect = 1
		1613	CODE:
		1614	{
		1615	STRLEN svlen;
		1616	void *addr = SvPVbyte (scalar, svlen);
		1617	size_t len = SvUV (length);
		1618
		1619	if (offset < 0)
		1620	offset += svlen;
		1621
		1622	if (offset < 0 || offset > svlen)
		1623	croak ("offset outside of scalar");
		1624
		1625	if (!SvOK (length) || len + offset > svlen)
		1626	len = svlen - offset;
		1627
		1628	addr = (void *)(((intptr_t)addr) + offset);
		1629	eio_page_align (&addr, &len);
		1630
		1631	switch (ix)
		1632	{
		1633	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1634	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1635	}
		1636	}
		1637	OUTPUT:
		1638	RETVAL
		1639
		1640	int
		1641	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		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	#if _POSIX_MEMLOCK_RANGE
		1660	RETVAL = munlock (addr, len);
		1661	#else
		1662	RETVAL = ((errno = ENOSYS), -1);
		1663	#endif
		1664	}
		1665	OUTPUT:
		1666	RETVAL
		1667
		1668	int
		1669	munlockall ()
		1670	CODE:
		1671	#if _POSIX_MEMLOCK
		1672	munlockall ();
		1673	#else
		1674	RETVAL = -1;
		1675	errno = ENOSYS;
		1676	#endif
		1677	OUTPUT:
		1678	RETVAL
		1679
		1680	void _on_next_submit (SV *cb)
		1681	CODE:
		1682	SvREFCNT_dec (on_next_submit);
		1683	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1684
1996	PROTOTYPES: DISABLE	1685	PROTOTYPES: DISABLE
1997		1686
1998	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1687	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1999		1688
2000	void	1689	void
2001	cancel (aio_req_ornot req)	1690	cancel (aio_req_ornot req)
2002	CODE:	1691	CODE:
2003	req_cancel (req);	1692	eio_cancel (req);
2004		1693
2005	void	1694	void
2006	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1695	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2007	CODE:	1696	PPCODE:
		1697	{
		1698	if (GIMME_V != G_VOID)
		1699	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1700
		1701	if (items > 1)
		1702	{
		1703	SV *cb_cv =get_cb (callback);
		1704
2008	SvREFCNT_dec (req->callback);	1705	SvREFCNT_dec (req->callback);
2009	req->callback = newSVsv (callback);	1706	req->callback = SvREFCNT_inc (cb_cv);
		1707	}
		1708	}
2010		1709
2011	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1710	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2012		1711
2013	void	1712	void
2014	add (aio_req grp, ...)	1713	add (aio_req grp, ...)
2015	PPCODE:	1714	PPCODE:
2016	{	1715	{
2017	int i;	1716	int i;
2018	aio_req req;
2019
2020	if (main_sig && !block_sig_level)
2021	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2022		1717
2023	if (grp->int1 == 2)	1718	if (grp->int1 == 2)
2024	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1719	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2025		1720
2026	for (i = 1; i < items; ++i )	1721	for (i = 1; i < items; ++i )
2027	{	1722	{
		1723	aio_req req;
		1724
2028	if (GIMME_V != G_VOID)	1725	if (GIMME_V != G_VOID)
2029	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1726	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2030		1727
2031	req = SvAIO_REQ (ST (i));	1728	req = SvAIO_REQ (ST (i));
2032		1729
2033	if (req)	1730	if (req)
2034	{	1731	eio_grp_add (grp, req);
2035	++grp->size;
2036	req->grp = grp;
2037
2038	req->grp_prev = 0;
2039	req->grp_next = grp->grp_first;
2040
2041	if (grp->grp_first)
2042	grp->grp_first->grp_prev = req;
2043
2044	grp->grp_first = req;
2045	}
2046	}	1732	}
2047	}	1733	}
2048		1734
2049	void	1735	void
2050	cancel_subs (aio_req_ornot req)	1736	cancel_subs (aio_req_ornot req)
…		…
2059	AV *av;	1745	AV *av;
2060		1746
2061	grp->errorno = errno;	1747	grp->errorno = errno;
2062		1748
2063	av = newAV ();	1749	av = newAV ();
		1750	av_extend (av, items - 1);
2064		1751
2065	for (i = 1; i < items; ++i )	1752	for (i = 1; i < items; ++i )
2066	av_push (av, newSVsv (ST (i)));	1753	av_push (av, newSVsv (ST (i)));
2067		1754
2068	SvREFCNT_dec (grp->sv1);	1755	SvREFCNT_dec (grp->sv1);
…		…
2075	grp->errorno = errorno;	1762	grp->errorno = errorno;
2076		1763
2077	void	1764	void
2078	limit (aio_req grp, int limit)	1765	limit (aio_req grp, int limit)
2079	CODE:	1766	CODE:
2080	grp->int2 = limit;	1767	eio_grp_limit (grp, limit);
2081	aio_grp_feed (grp);
2082		1768
2083	void	1769	void
2084	feed (aio_req grp, SV *callback=&PL_sv_undef)	1770	feed (aio_req grp, SV *callback=&PL_sv_undef)
2085	CODE:	1771	CODE:
2086	{	1772	{
2087	SvREFCNT_dec (grp->sv2);	1773	SvREFCNT_dec (grp->sv2);
2088	grp->sv2 = newSVsv (callback);	1774	grp->sv2 = newSVsv (callback);
		1775	grp->feed = aio_grp_feed;
2089		1776
2090	if (grp->int2 <= 0)	1777	if (grp->int2 <= 0)
2091	grp->int2 = 2;	1778	grp->int2 = 2;
2092		1779
2093	aio_grp_feed (grp);	1780	eio_grp_limit (grp, grp->int2);
2094	}	1781	}
2095		1782

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