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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.113 by root, Wed Apr 16 16:45:18 2008 UTC vs.
Revision 1.181 by root, Tue Feb 15 03:21:41 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	static HV *stash;	96	/*****************************************************************************/
103		97
104	#define dBUF \	98	#if __GNUC__ >= 3
105	char *aio_buf; \	99	# define expect(expr,value) __builtin_expect ((expr),(value))
106	X_LOCK (wrklock); \	100	#else
107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	101	# define expect(expr,value) (expr)
108	X_UNLOCK (wrklock); \	102	#endif
109	if (!aio_buf) \	103
110	return -1;	104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
111		108
112	typedef SV SV8; /* byte-sv, used for argument-checking */	109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	STRLEN stroffset; \
		119	SV *self;
		120
		121	#define EIO_NO_WRAPPERS 1
		122
		123	#include "libeio/config.h"
		124	#include "libeio/eio.h"
		125
		126	#ifndef POSIX_FADV_NORMAL
		127	# define POSIX_FADV_NORMAL 0
		128	#endif
		129	#ifndef POSIX_FADV_SEQUENTIAL
		130	# define POSIX_FADV_SEQUENTIAL 0
		131	#endif
		132	#ifndef POSIX_FADV_RANDOM
		133	# define POSIX_FADV_RANDOM 0
		134	#endif
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138	#ifndef POSIX_FADV_WILLNEED
		139	# define POSIX_FADV_WILLNEED 0
		140	#endif
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	#if !HAVE_POSIX_FADVISE
		146	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		147	#endif
		148
		149	#ifndef POSIX_MADV_NORMAL
		150	# define POSIX_MADV_NORMAL 0
		151	#endif
		152	#ifndef POSIX_MADV_SEQUENTIAL
		153	# define POSIX_MADV_SEQUENTIAL 0
		154	#endif
		155	#ifndef POSIX_MADV_RANDOM
		156	# define POSIX_MADV_RANDOM 0
		157	#endif
		158	#ifndef POSIX_MADV_WILLNEED
		159	# define POSIX_MADV_WILLNEED 0
		160	#endif
		161	#ifndef POSIX_MADV_DONTNEED
		162	# define POSIX_MADV_DONTNEED 0
		163	#endif
		164
		165	#if !HAVE_POSIX_MADVISE
		166	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		167	#endif
		168
		169	#ifndef PROT_NONE
		170	# define PROT_NONE 0
		171	#endif
		172	#ifndef PROT_READ
		173	# define PROT_READ 0
		174	#endif
		175	#ifndef PROT_WRITE
		176	# define PROT_READ 0
		177	#endif
		178	#ifndef PROT_EXEC
		179	# define PROT_EXEC 0
		180	#endif
		181
		182	#ifndef ST_NODEV
		183	# define ST_NODEV 0
		184	#endif
		185	#ifndef ST_NOEXEC
		186	# define ST_NOEXEC 0
		187	#endif
		188	#ifndef ST_SYNCHRONOUS
		189	# define ST_SYNCHRONOUS 0
		190	#endif
		191	#ifndef ST_MANDLOCK
		192	# define ST_MANDLOCK 0
		193	#endif
		194	#ifndef ST_WRITE
		195	# define ST_WRITE 0
		196	#endif
		197	#ifndef ST_APPEND
		198	# define ST_APPEND 0
		199	#endif
		200	#ifndef ST_IMMUTABLE
		201	# define ST_IMMUTABLE 0
		202	#endif
		203	#ifndef ST_NOATIME
		204	# define ST_NOATIME 0
		205	#endif
		206	#ifndef ST_NODIRATIME
		207	# define ST_NODIRATIME 0
		208	#endif
		209	#ifndef ST_RELATIME
		210	# define ST_RELATIME 0
		211	#endif
		212
		213	#ifndef S_IFIFO
		214	# define S_IFIFO 0
		215	#endif
		216	#ifndef S_IFCHR
		217	# define S_IFCHR 0
		218	#endif
		219	#ifndef S_IFBLK
		220	# define S_IFBLK 0
		221	#endif
		222	#ifndef S_IFLNK
		223	# define S_IFLNK 0
		224	#endif
		225	#ifndef S_IFREG
		226	# define S_IFREG 0
		227	#endif
		228	#ifndef S_IFDIR
		229	# define S_IFDIR 0
		230	#endif
		231	#ifndef S_IFWHT
		232	# define S_IFWHT 0
		233	#endif
		234	#ifndef S_IFSOCK
		235	# define S_IFSOCK 0
		236	#endif
		237
		238	#ifndef MAP_ANONYMOUS
		239	# ifdef MAP_ANON
		240	# define MAP_ANONYMOUS MAP_ANON
		241	# else
		242	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		243	# endif
		244	#endif
		245	#ifndef MAP_HUGETLB
		246	# define MAP_HUGETLB 0
		247	#endif
		248	#ifndef MAP_LOCKED
		249	# define MAP_LOCKED 0
		250	#endif
		251	#ifndef MAP_NORESERVE
		252	# define MAP_NORESERVE 0
		253	#endif
		254	#ifndef MAP_POPULATE
		255	# define MAP_POPULATE 0
		256	#endif
		257	#ifndef MAP_NONBLOCK
		258	# define MAP_NONBLOCK 0
		259	#endif
		260
		261	#ifndef makedev
		262	# define makedev(maj,min) (((maj) << 8) | (min))
		263	#endif
		264	#ifndef major
		265	# define major(dev) ((dev) >> 8)
		266	#endif
		267	#ifndef minor
		268	# define minor(dev) ((dev) & 0xff)
		269	#endif
		270
		271	#ifndef PAGESIZE
		272	# define PAGESIZE sysconf (_SC_PAGESIZE)
		273	#endif
		274
		275	static int req_invoke (eio_req *req);
		276	#define EIO_FINISH(req) req_invoke (req)
		277	static void req_destroy (eio_req *grp);
		278	#define EIO_DESTROY(req) req_destroy (req)
113		279
114	enum {	280	enum {
115	REQ_QUIT,	281	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116	REQ_OPEN, REQ_CLOSE,
117	REQ_READ, REQ_WRITE,
118	REQ_READAHEAD, REQ_SENDFILE,
119	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
120	REQ_TRUNCATE, REQ_FTRUNCATE,
121	REQ_UTIME, REQ_FUTIME,
122	REQ_CHMOD, REQ_FCHMOD,
123	REQ_CHOWN, REQ_FCHOWN,
124	REQ_SYNC, REQ_FSYNC, REQ_FDATASYNC,
125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
126	REQ_MKNOD, REQ_READDIR,
127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
128	REQ_GROUP, REQ_NOP,
129	REQ_BUSY,
130	};	282	};
131		283
132	#define AIO_REQ_KLASS "IO::AIO::REQ"	284	#include "libeio/eio.c"
133	#define AIO_GRP_KLASS "IO::AIO::GRP"
134		285
135	typedef struct aio_cb
136	{
137	struct aio_cb *volatile next;
138
139	SV *callback;
140	SV *sv1, *sv2;
141	void *ptr1, *ptr2;
142	off_t offs;
143	size_t size;
144	ssize_t result;
145	double nv1, nv2;
146
147	STRLEN stroffset;
148	int type;
149	int int1, int2, int3;
150	int errorno;
151	mode_t mode; /* open */
152
153	unsigned char flags;
154	unsigned char pri;
155
156	SV *self; /* the perl counterpart of this request, if any */
157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
158	} aio_cb;
159
160	enum {
161	FLAG_CANCELLED = 0x01, /* request was cancelled */
162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
164	};
165
166	typedef aio_cb *aio_req;	286	typedef eio_req *aio_req;
167	typedef aio_cb *aio_req_ornot;	287	typedef eio_req *aio_req_ornot;
168		288
169	enum {	289	static SV *on_next_submit;
170	PRI_MIN = -4,	290	static int next_pri = EIO_PRI_DEFAULT;
171	PRI_MAX = 4,	291	static int max_outstanding;
172		292
173	DEFAULT_PRI = 0,	293	static s_epipe respipe;
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177		294
178	#define AIO_TICKS ((1000000 + 1023) >> 10)
179
180	static unsigned int max_poll_time = 0;
181	static unsigned int max_poll_reqs = 0;
182
183	/* calculcate time difference in ~1/AIO_TICKS of a second */
184	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
185	{
186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
188	}
189
190	static thread_t main_tid;
191	static int main_sig;
192	static int block_sig_level;
193
194	void block_sig (void)
195	{
196	sigset_t ss;
197
198	if (block_sig_level++)
199	return;
200
201	if (!main_sig)
202	return;
203
204	sigemptyset (&ss);
205	sigaddset (&ss, main_sig);
206	pthread_sigmask (SIG_BLOCK, &ss, 0);
207	}
208
209	void unblock_sig (void)
210	{
211	sigset_t ss;
212
213	if (--block_sig_level)
214	return;
215
216	if (!main_sig)
217	return;
218
219	sigemptyset (&ss);
220	sigaddset (&ss, main_sig);
221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
222	}
223
224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
225
226	static unsigned int started, idle, wanted;
227
228	/* worker threads management */
229	static mutex_t wrklock = X_MUTEX_INIT;
230
231	typedef struct worker {
232	/* locked by wrklock */
233	struct worker *prev, *next;
234
235	thread_t tid;
236
237	/* locked by reslock, reqlock or wrklock */
238	aio_req req; /* currently processed request */
239	void *dbuf;
240	DIR *dirp;
241	} worker;
242
243	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
244
245	static void worker_clear (worker *wrk)
246	{
247	if (wrk->dirp)
248	{
249	closedir (wrk->dirp);
250	wrk->dirp = 0;
251	}
252
253	if (wrk->dbuf)
254	{
255	free (wrk->dbuf);
256	wrk->dbuf = 0;
257	}
258	}
259
260	static void worker_free (worker *wrk)
261	{
262	wrk->next->prev = wrk->prev;
263	wrk->prev->next = wrk->next;
264
265	free (wrk);
266	}
267
268	static volatile unsigned int nreqs, nready, npending;
269	static volatile unsigned int max_idle = 4;
270	static volatile unsigned int max_outstanding = 0xffffffff;
271	static int respipe_osf [2], respipe [2] = { -1, -1 };
272
273	static mutex_t reslock = X_MUTEX_INIT;
274	static mutex_t reqlock = X_MUTEX_INIT;
275	static cond_t reqwait = X_COND_INIT;
276
277	#if WORDACCESS_UNSAFE
278
279	static unsigned int get_nready (void)
280	{
281	unsigned int retval;
282
283	X_LOCK (reqlock);
284	retval = nready;
285	X_UNLOCK (reqlock);
286
287	return retval;
288	}
289
290	static unsigned int get_npending (void)
291	{
292	unsigned int retval;
293
294	X_LOCK (reslock);
295	retval = npending;
296	X_UNLOCK (reslock);
297
298	return retval;
299	}
300
301	static unsigned int get_nthreads (void)
302	{
303	unsigned int retval;
304
305	X_LOCK (wrklock);
306	retval = started;
307	X_UNLOCK (wrklock);
308
309	return retval;
310	}
311
312	#else
313
314	# define get_nready() nready
315	# define get_npending() npending
316	# define get_nthreads() started
317
318	#endif
319
320	/*
321	* a somewhat faster data structure might be nice, but
322	* with 8 priorities this actually needs <20 insns
323	* per shift, the most expensive operation.
324	*/
325	typedef struct {
326	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
327	int size;
328	} reqq;
329
330	static reqq req_queue;
331	static reqq res_queue;
332
333	int reqq_push (reqq *q, aio_req req)
334	{
335	int pri = req->pri;
336	req->next = 0;
337
338	if (q->qe[pri])
339	{
340	q->qe[pri]->next = req;
341	q->qe[pri] = req;
342	}
343	else
344	q->qe[pri] = q->qs[pri] = req;
345
346	return q->size++;
347	}
348
349	aio_req reqq_shift (reqq *q)
350	{
351	int pri;
352
353	if (!q->size)
354	return 0;
355
356	--q->size;
357
358	for (pri = NUM_PRI; pri--; )
359	{
360	aio_req req = q->qs[pri];
361
362	if (req)
363	{
364	if (!(q->qs[pri] = req->next))
365	q->qe[pri] = 0;
366
367	return req;
368	}
369	}
370
371	abort ();
372	}
373
374	static int poll_cb (void);
375	static int req_invoke (aio_req req);
376	static void req_destroy (aio_req req);	295	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	296	static void req_cancel (aio_req req);
378		297
		298	static void want_poll (void)
		299	{
		300	/* write a dummy byte to the pipe so fh becomes ready */
		301	s_epipe_signal (&respipe);
		302	}
		303
		304	static void done_poll (void)
		305	{
		306	/* read any signals sent by the worker threads */
		307	s_epipe_drain (&respipe);
		308	}
		309
379	/* must be called at most once */	310	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	311	static SV *req_sv (aio_req req, HV *stash)
381	{	312	{
382	if (!req->self)	313	if (!req->self)
383	{	314	{
384	req->self = (SV *)newHV ();	315	req->self = (SV *)newHV ();
385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	316	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386	}	317	}
387		318
388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	319	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389	}	320	}
390		321
391	static aio_req SvAIO_REQ (SV *sv)	322	static aio_req SvAIO_REQ (SV *sv)
392	{	323	{
393	MAGIC *mg;	324	MAGIC *mg;
394		325
395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	326	if (!SvROK (sv)
		327	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		328	&& SvSTASH (SvRV (sv)) != aio_req_stash
		329	&& !sv_derived_from (sv, "IO::AIO::REQ")))
396	croak ("object of class " AIO_REQ_KLASS " expected");	330	croak ("object of class IO::AIO::REQ expected");
397		331
398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	332	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399		333
400	return mg ? (aio_req)mg->mg_ptr : 0;	334	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	335	}
402		336
403	static void aio_grp_feed (aio_req grp)	337	static void aio_grp_feed (aio_req grp)
404	{	338	{
405	block_sig ();	339	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	340	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	341	dSP;
414		342
415	ENTER;	343	ENTER;
416	SAVETMPS;	344	SAVETMPS;
417	PUSHMARK (SP);	345	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	346	XPUSHs (req_sv (grp, aio_grp_stash));
419	PUTBACK;	347	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	348	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	349	SPAGAIN;
422	FREETMPS;	350	FREETMPS;
423	LEAVE;	351	LEAVE;
424	}
425
426	/* stop if no progress has been made */
427	if (old_len == grp->size)
428	{
429	SvREFCNT_dec (grp->sv2);
430	grp->sv2 = 0;
431	break;
432	}
433	}	352	}
434
435	unblock_sig ();
436	}	353	}
437		354
438	static void aio_grp_dec (aio_req grp)	355	static void req_submit (eio_req *req)
439	{	356	{
440	--grp->size;	357	eio_submit (req);
441		358
442	/* call feeder, if applicable */	359	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	360	{
448	block_sig ();	361	dSP;
		362	SV *cb = sv_2mortal (on_next_submit);
449		363
450	if (!req_invoke (grp))	364	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		365
457	req_destroy (grp);	366	PUSHMARK (SP);
458	unblock_sig ();	367	PUTBACK;
		368	call_sv (cb, G_DISCARD | G_EVAL);
459	}	369	}
460	}	370	}
461		371
462	static int req_invoke (aio_req req)	372	static int req_invoke (eio_req *req)
463	{	373	{
464	dSP;
465
466	if (req->flags & FLAG_SV2_RO_OFF)	374	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	375	SvREADONLY_off (req->sv2);
468		376
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	377	if (!EIO_CANCELLED (req) && req->callback)
470	{	378	{
		379	dSP;
		380	static SV *sv_result_cache; /* caches the result integer SV */
		381	SV *sv_result;
		382
471	ENTER;	383	ENTER;
472	SAVETMPS;	384	SAVETMPS;
473	PUSHMARK (SP);	385	PUSHMARK (SP);
474	EXTEND (SP, 1);	386	EXTEND (SP, 1);
475		387
		388	/* do not recreate the result IV from scratch each time */
		389	if (expect_true (sv_result_cache))
		390	{
		391	sv_result = sv_result_cache; sv_result_cache = 0;
		392	SvIV_set (sv_result, req->result);
		393	SvIOK_only (sv_result);
		394	}
		395	else
		396	{
		397	sv_result = newSViv (req->result);
		398	SvREADONLY_on (sv_result);
		399	}
		400
476	switch (req->type)	401	switch (req->type)
477	{	402	{
478	case REQ_READDIR:	403	case EIO_READDIR:
479	{	404	{
480	SV *rv = &PL_sv_undef;	405	SV *rv = &PL_sv_undef;
481		406
482	if (req->result >= 0)	407	if (req->result >= 0)
483	{	408	{
484	int i;	409	int i;
485	char *buf = req->ptr2;	410	char *names = (char *)req->ptr2;
		411	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486	AV *av = newAV ();	412	AV *av = newAV ();
487		413
488	av_extend (av, req->result - 1);	414	av_extend (av, req->result - 1);
489		415
490	for (i = 0; i < req->result; ++i)	416	for (i = 0; i < req->result; ++i)
491	{	417	{
492	SV *sv = newSVpv (buf, 0);	418	if (req->int1 & EIO_READDIR_DENTS)
		419	{
		420	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493		421
		422	if (req->int1 & EIO_READDIR_CUSTOM2)
		423	{
		424	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		425	AV *avent = newAV ();
		426
		427	av_extend (avent, 2);
		428
		429	if (!sv_type [ent->type])
		430	{
		431	sv_type [ent->type] = newSViv (ent->type);
		432	SvREADONLY_on (sv_type [ent->type]);
		433	}
		434
		435	av_store (avent, 0, namesv);
		436	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		437	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		438
		439	av_store (av, i, newRV_noinc ((SV *)avent));
		440	}
		441	else
494	av_store (av, i, sv);	442	av_store (av, i, namesv);
		443
		444	++ent;
		445	}
		446	else
		447	{
		448	SV *name = newSVpv (names, 0);
		449	av_store (av, i, name);
495	buf += SvCUR (sv) + 1;	450	names += SvCUR (name) + 1;
		451	}
496	}	452	}
497		453
498	rv = sv_2mortal (newRV_noinc ((SV *)av));	454	rv = sv_2mortal (newRV_noinc ((SV *)av));
499	}	455	}
500		456
501	PUSHs (rv);	457	PUSHs (rv);
		458
		459	if (req->int1 & EIO_READDIR_CUSTOM1)
		460	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502	}	461	}
503	break;	462	break;
504		463
505	case REQ_OPEN:	464	case EIO_OPEN:
506	{	465	{
507	/* convert fd to fh */	466	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	467	SV *fh = &PL_sv_undef;
509		468
510	if (req->result >= 0)	469	if (req->result >= 0)
…		…
512	GV *gv = (GV *)sv_newmortal ();	471	GV *gv = (GV *)sv_newmortal ();
513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	472	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
514	char sym [64];	473	char sym [64];
515	int symlen;	474	int symlen;
516		475
517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	476	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
518	gv_init (gv, stash, sym, symlen, 0);	477	gv_init (gv, aio_stash, sym, symlen, 0);
519		478
520	symlen = snprintf (	479	symlen = snprintf (
521	sym,	480	sym,
522	sizeof (sym),	481	sizeof (sym),
523	"%s&=%d",	482	"%s&=%d",
524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",	483	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525	req->result	484	(int)req->result
526	);	485	);
527		486
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	487	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
529	fh = (SV *)gv;	488	fh = (SV *)gv;
530	}	489	}
531		490
532	PUSHs (fh);	491	PUSHs (fh);
533	}	492	}
534	break;	493	break;
535		494
		495	case EIO_STATVFS:
		496	case EIO_FSTATVFS:
		497	{
		498	SV *rv = &PL_sv_undef;
		499
		500	if (req->result >= 0)
		501	{
		502	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		503	HV *hv = newHV ();
		504
		505	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		506
		507	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		508	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		509	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		510	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		511	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		512	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		513	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		514	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		515	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		516	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		517	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		518	}
		519
		520	PUSHs (rv);
		521	}
		522
		523	break;
		524
536	case REQ_GROUP:	525	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	526	req->int1 = 2; /* mark group as finished */
538		527
539	if (req->sv1)	528	if (req->sv1)
540	{	529	{
541	int i;	530	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	534	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	535	PUSHs (*av_fetch (av, i, 0));
547	}	536	}
548	break;	537	break;
549		538
550	case REQ_NOP:	539	case EIO_NOP:
551	case REQ_BUSY:	540	case EIO_BUSY:
552	break;	541	break;
553		542
554	case REQ_READLINK:	543	case EIO_READLINK:
555	if (req->result > 0)	544	if (req->result > 0)
556	{	545	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
557	SvCUR_set (req->sv2, req->result);
558	*SvEND (req->sv2) = 0;
559	PUSHs (req->sv2);
560	}
561	break;	546	break;
562		547
563	case REQ_STAT:	548	case EIO_STAT:
564	case REQ_LSTAT:	549	case EIO_LSTAT:
565	case REQ_FSTAT:	550	case EIO_FSTAT:
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	551	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
567	PL_laststatval = req->result;	552	PL_laststatval = req->result;
568	PL_statcache = *(Stat_t *)(req->ptr2);	553	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));	554	PUSHs (sv_result);
570	break;	555	break;
571		556
572	case REQ_READ:	557	case EIO_READ:
		558	{
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	559	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;	560	*SvEND (req->sv2) = 0;
575	PUSHs (sv_2mortal (newSViv (req->result)));	561	SvPOK_only (req->sv2);
		562	SvSETMAGIC (req->sv2);
		563	PUSHs (sv_result);
		564	}
576	break;	565	break;
577		566
		567	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		568	if (req->result > 0)
		569	SvIV_set (sv_result, 0);
		570	/* FALLTHROUGH */
		571
578	default:	572	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	573	PUSHs (sv_result);
580	break;	574	break;
581	}	575	}
582		576
583	errno = req->errorno;	577	errno = req->errorno;
584		578
585	PUTBACK;	579	PUTBACK;
586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);	580	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	581	SPAGAIN;
588		582
		583	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		584	SvREFCNT_dec (sv_result);
		585	else
		586	sv_result_cache = sv_result;
		587
589	FREETMPS;	588	FREETMPS;
590	LEAVE;	589	LEAVE;
591		590
592	PUTBACK;	591	PUTBACK;
593	}	592	}
594		593
595	if (req->grp)
596	{
597	aio_req grp = req->grp;
598
599	/* unlink request */
600	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
601	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
602
603	if (grp->grp_first == req)
604	grp->grp_first = req->grp_next;
605
606	aio_grp_dec (grp);
607	}
608
609	return !SvTRUE (ERRSV);	594	return !!SvTRUE (ERRSV);
610	}	595	}
611		596
612	static void req_destroy (aio_req req)	597	static void req_destroy (aio_req req)
613	{	598	{
614	if (req->self)	599	if (req->self)
…		…
619		604
620	SvREFCNT_dec (req->sv1);	605	SvREFCNT_dec (req->sv1);
621	SvREFCNT_dec (req->sv2);	606	SvREFCNT_dec (req->sv2);
622	SvREFCNT_dec (req->callback);	607	SvREFCNT_dec (req->callback);
623		608
624	if (req->flags & FLAG_PTR2_FREE)
625	free (req->ptr2);
626
627	Safefree (req);	609	Safefree (req);
628	}	610	}
629		611
630	static void req_cancel_subs (aio_req grp)	612	static void req_cancel_subs (aio_req grp)
631	{	613	{
632	aio_req sub;	614	aio_req sub;
633		615
634	if (grp->type != REQ_GROUP)	616	if (grp->type != EIO_GROUP)
635	return;	617	return;
636		618
637	SvREFCNT_dec (grp->sv2);	619	SvREFCNT_dec (grp->sv2);
638	grp->sv2 = 0;	620	grp->sv2 = 0;
639		621
640	for (sub = grp->grp_first; sub; sub = sub->grp_next)	622	eio_grp_cancel (grp);
641	req_cancel (sub);
642	}	623	}
643
644	static void req_cancel (aio_req req)
645	{
646	req->flags |= FLAG_CANCELLED;
647
648	req_cancel_subs (req);
649	}
650
651	#ifdef USE_SOCKETS_AS_HANDLES
652	# define TO_SOCKET(x) (win32_get_osfhandle (x))
653	#else
654	# define TO_SOCKET(x) (x)
655	#endif
656		624
657	static void	625	static void
658	create_respipe (void)	626	create_respipe (void)
659	{	627	{
660	int old_readfd = respipe [0];
661
662	if (respipe [1] >= 0)
663	respipe_close (TO_SOCKET (respipe [1]));
664
665	#ifdef _WIN32
666	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
667	#else
668	if (pipe (respipe))	628	if (s_epipe_renew (&respipe))
669	#endif
670	croak ("unable to initialize result pipe");	629	croak ("IO::AIO: unable to initialize result pipe");
671
672	if (old_readfd >= 0)
673	{
674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
675	croak ("unable to initialize result pipe(2)");
676
677	respipe_close (respipe [0]);
678	respipe [0] = old_readfd;
679	}
680
681	#ifdef _WIN32
682	int arg = 1;
683	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
684	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
685	#else
686	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
687	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
688	#endif
689	croak ("unable to initialize result pipe(3)");
690
691	respipe_osf [0] = TO_SOCKET (respipe [0]);
692	respipe_osf [1] = TO_SOCKET (respipe [1]);
693	}
694
695	X_THREAD_PROC (aio_proc);
696
697	static void start_thread (void)
698	{
699	worker *wrk = calloc (1, sizeof (worker));
700
701	if (!wrk)
702	croak ("unable to allocate worker thread data");
703
704	X_LOCK (wrklock);
705
706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
707	{
708	wrk->prev = &wrk_first;
709	wrk->next = wrk_first.next;
710	wrk_first.next->prev = wrk;
711	wrk_first.next = wrk;
712	++started;
713	}
714	else
715	free (wrk);
716
717	X_UNLOCK (wrklock);
718	}
719
720	static void maybe_start_thread (void)
721	{
722	if (get_nthreads () >= wanted)
723	return;
724
725	/* todo: maybe use idle here, but might be less exact */
726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
727	return;
728
729	start_thread ();
730	}
731
732	static void req_send (aio_req req)
733	{
734	block_sig ();
735
736	++nreqs;
737
738	X_LOCK (reqlock);
739	++nready;
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	unblock_sig ();
745
746	maybe_start_thread ();
747	}
748
749	static void end_thread (void)
750	{
751	aio_req req;
752
753	Newz (0, req, 1, aio_cb);
754
755	req->type = REQ_QUIT;
756	req->pri = PRI_MAX + PRI_BIAS;
757
758	X_LOCK (reqlock);
759	reqq_push (&req_queue, req);
760	X_COND_SIGNAL (reqwait);
761	X_UNLOCK (reqlock);
762
763	X_LOCK (wrklock);
764	--started;
765	X_UNLOCK (wrklock);
766	}
767
768	static void set_max_idle (int nthreads)
769	{
770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
771	max_idle = nthreads <= 0 ? 1 : nthreads;
772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
773	}
774
775	static void min_parallel (int nthreads)
776	{
777	if (wanted < nthreads)
778	wanted = nthreads;
779	}
780
781	static void max_parallel (int nthreads)
782	{
783	if (wanted > nthreads)
784	wanted = nthreads;
785
786	while (started > wanted)
787	end_thread ();
788	}	630	}
789		631
790	static void poll_wait (void)	632	static void poll_wait (void)
791	{	633	{
792	fd_set rfd;
793
794	while (nreqs)	634	while (eio_nreqs ())
795	{	635	{
796	int size;	636	int size;
797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	637
		638	X_LOCK (reslock);
798	size = res_queue.size;	639	size = res_queue.size;
799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	640	X_UNLOCK (reslock);
800		641
801	if (size)	642	if (size)
802	return;	643	return;
803		644
804	maybe_start_thread ();	645	etp_maybe_start_thread ();
805		646
806	FD_ZERO (&rfd);	647	s_epipe_wait (&respipe);
807	FD_SET (respipe [0], &rfd);
808
809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810	}	648	}
811	}	649	}
812		650
813	static int poll_cb (void)	651	static int poll_cb (void)
814	{	652	{
815	dSP;
816	int count = 0;
817	int maxreqs = max_poll_reqs;
818	int do_croak = 0;
819	struct timeval tv_start, tv_now;
820	aio_req req;
821
822	if (max_poll_time)
823	gettimeofday (&tv_start, 0);
824
825	block_sig ();
826
827	for (;;)	653	for (;;)
828	{	654	{
829	for (;;)	655	int res = eio_poll ();
830	{
831	maybe_start_thread ();
832		656
833	X_LOCK (reslock);	657	if (res > 0)
834	req = reqq_shift (&res_queue);
835
836	if (req)
837	{
838	--npending;
839
840	if (!res_queue.size)
841	{
842	/* read any signals sent by the worker threads */
843	char buf [4];
844	while (respipe_read (respipe [0], buf, 4) == 4)
845	;
846	}
847	}
848
849	X_UNLOCK (reslock);
850
851	if (!req)
852	break;
853
854	--nreqs;
855
856	if (req->type == REQ_GROUP && req->size)
857	{
858	req->int1 = 1; /* mark request as delayed */
859	continue;
860	}
861	else
862	{
863	if (!req_invoke (req))
864	{
865	req_destroy (req);
866	unblock_sig ();
867	croak (0);	658	croak (0);
868	}
869		659
870	count++;	660	if (!max_outstanding || max_outstanding > eio_nreqs ())
871	}	661	return res;
872
873	req_destroy (req);
874
875	if (maxreqs && !--maxreqs)
876	break;
877
878	if (max_poll_time)
879	{
880	gettimeofday (&tv_now, 0);
881
882	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
883	break;
884	}
885	}
886
887	if (nreqs <= max_outstanding)
888	break;
889		662
890	poll_wait ();	663	poll_wait ();
891
892	++maxreqs;
893	}	664	}
		665	}
894		666
895	unblock_sig ();	667	static void atfork_child (void)
896	return count;	668	{
		669	create_respipe ();
897	}	670	}
898		671
899	/*****************************************************************************/	672	/*****************************************************************************/
900	/* work around various missing functions */
901		673
902	#if !HAVE_PREADWRITE	674	#if !_POSIX_MAPPED_FILES
903	# define pread aio_pread	675	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
904	# define pwrite aio_pwrite	676	# define munmap(addr,length) (errno = ENOSYS, -1)
905
906	/*
907	* make our pread/pwrite safe against themselves, but not against
908	* normal read/write by using a mutex. slows down execution a lot,
909	* but that's your problem, not mine.
910	*/
911	static mutex_t preadwritelock = X_MUTEX_INIT;
912
913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
914	{
915	ssize_t res;
916	off_t ooffset;
917
918	X_LOCK (preadwritelock);
919	ooffset = lseek (fd, 0, SEEK_CUR);
920	lseek (fd, offset, SEEK_SET);
921	res = read (fd, buf, count);
922	lseek (fd, ooffset, SEEK_SET);
923	X_UNLOCK (preadwritelock);
924
925	return res;
926	}
927
928	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
929	{
930	ssize_t res;
931	off_t ooffset;
932
933	X_LOCK (preadwritelock);
934	ooffset = lseek (fd, 0, SEEK_CUR);
935	lseek (fd, offset, SEEK_SET);
936	res = write (fd, buf, count);
937	lseek (fd, offset, SEEK_SET);
938	X_UNLOCK (preadwritelock);
939
940	return res;
941	}
942	#endif
943
944	#ifndef HAVE_FUTIMES
945
946	# define utimes(path,times) aio_utimes (path, times)
947	# define futimes(fd,times) aio_futimes (fd, times)
948
949	int aio_utimes (const char *filename, const struct timeval times[2])
950	{
951	if (times)
952	{
953	struct utimbuf buf;
954
955	buf.actime = times[0].tv_sec;
956	buf.modtime = times[1].tv_sec;
957
958	return utime (filename, &buf);
959	}
960	else
961	return utime (filename, 0);
962	}
963
964	int aio_futimes (int fd, const struct timeval tv[2])
965	{
966	errno = ENOSYS;
967	return -1;
968	}
969
970	#endif
971
972	#if !HAVE_FDATASYNC
973	# define fdatasync fsync
974	#endif
975
976	#if !HAVE_READAHEAD
977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
978
979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
980	{
981	size_t todo = count;
982	dBUF;
983
984	while (todo > 0)
985	{
986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
987
988	pread (fd, aio_buf, len, offset);
989	offset += len;
990	todo -= len;
991	}
992
993	errno = 0;
994	return count;
995	}
996
997	#endif
998
999	#if !HAVE_READDIR_R
1000	# define readdir_r aio_readdir_r
1001
1002	static mutex_t readdirlock = X_MUTEX_INIT;
1003
1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1005	{
1006	X_DIRENT *e;
1007	int errorno;
1008
1009	X_LOCK (readdirlock);
1010
1011	e = readdir (dirp);
1012	errorno = errno;
1013
1014	if (e)
1015	{
1016	*res = ent;
1017	strcpy (ent->d_name, e->d_name);
1018	}
1019	else
1020	*res = 0;
1021
1022	X_UNLOCK (readdirlock);
1023
1024	errno = errorno;
1025	return e ? 0 : -1;
1026	}
1027	#endif
1028
1029	/* sendfile always needs emulation */
1030	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1031	{
1032	ssize_t res;
1033
1034	if (!count)
1035	return 0;
1036
1037	#if HAVE_SENDFILE
1038	# if __linux
1039	res = sendfile (ofd, ifd, &offset, count);
1040
1041	# elif __freebsd
1042	/*
1043	* Of course, the freebsd sendfile is a dire hack with no thoughts
1044	* wasted on making it similar to other I/O functions.
1045	*/
1046	{
1047	off_t sbytes;
1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1049
1050	if (res < 0 && sbytes)
1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1052	res = sbytes;
1053	}
1054
1055	# elif __hpux
1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
1057
1058	# elif __solaris
1059	{
1060	struct sendfilevec vec;
1061	size_t sbytes;
1062
1063	vec.sfv_fd = ifd;
1064	vec.sfv_flag = 0;
1065	vec.sfv_off = offset;
1066	vec.sfv_len = count;
1067
1068	res = sendfilev (ofd, &vec, 1, &sbytes);
1069
1070	if (res < 0 && sbytes)
1071	res = sbytes;
1072	}
1073
1074	# endif	677	#endif
1075	#else
1076	res = -1;
1077	errno = ENOSYS;
1078	#endif
1079		678
1080	if (res < 0	679	#if !_POSIX_MEMORY_PROTECTION
1081	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	680	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
1082	#if __solaris	681	# define PROT_NONE 0
1083	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	682	# define PROT_WRITE 0
		683	# define MAP_PRIVATE 0
		684	# define MAP_SHARED 0
		685	# define MAP_FIXED 0
1084	#endif	686	#endif
1085	)
1086	)
1087	{
1088	/* emulate sendfile. this is a major pain in the ass */
1089	dBUF;
1090		687
1091	res = 0;	688	#define MMAP_MAGIC PERL_MAGIC_ext
1092
1093	while (count)
1094	{
1095	ssize_t cnt;
1096
1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1098
1099	if (cnt <= 0)
1100	{
1101	if (cnt && !res) res = -1;
1102	break;
1103	}
1104
1105	cnt = write (ofd, aio_buf, cnt);
1106
1107	if (cnt <= 0)
1108	{
1109	if (cnt && !res) res = -1;
1110	break;
1111	}
1112
1113	offset += cnt;
1114	res += cnt;
1115	count -= cnt;
1116	}
1117	}
1118
1119	return res;
1120	}
1121
1122	/* read a full directory */
1123	static void scandir_ (aio_req req, worker *self)
1124	{
1125	DIR *dirp;
1126	union
1127	{
1128	X_DIRENT d;
1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1130	} *u;
1131	X_DIRENT *entp;
1132	char *name, *names;
1133	int memlen = 4096;
1134	int memofs = 0;
1135	int res = 0;
1136
1137	X_LOCK (wrklock);
1138	self->dirp = dirp = opendir (req->ptr1);
1139	self->dbuf = u = malloc (sizeof (*u));
1140	req->flags |= FLAG_PTR2_FREE;
1141	req->ptr2 = names = malloc (memlen);
1142	X_UNLOCK (wrklock);
1143
1144	if (dirp && u && names)
1145	for (;;)
1146	{
1147	errno = 0;
1148	readdir_r (dirp, &u->d, &entp);
1149
1150	if (!entp)
1151	break;
1152
1153	name = entp->d_name;
1154
1155	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1156	{
1157	int len = strlen (name) + 1;
1158
1159	res++;
1160
1161	while (memofs + len > memlen)
1162	{
1163	memlen *= 2;
1164	X_LOCK (wrklock);
1165	req->ptr2 = names = realloc (names, memlen);
1166	X_UNLOCK (wrklock);
1167
1168	if (!names)
1169	break;
1170	}
1171
1172	memcpy (names + memofs, name, len);
1173	memofs += len;
1174	}
1175	}
1176
1177	if (errno)
1178	res = -1;
1179
1180	req->result = res;
1181	}
1182		689
1183	static int	690	static int
1184	aio_close (int fd)	691	mmap_free (pTHX_ SV *sv, MAGIC *mg)
1185	{	692	{
1186	static int close_pipe = -1; /* dummy fd to close fds via dup2 */	693	int old_errno = errno;
		694	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		695	errno = old_errno;
1187		696
1188	X_LOCK (wrklock);	697	mg->mg_obj = 0; /* just in case */
1189		698
1190	if (close_pipe < 0)	699	SvREADONLY_off (sv);
1191	{
1192	int pipefd [2];
1193		700
1194	if (pipe (pipefd) < 0	701	if (SvPVX (sv) != mg->mg_ptr)
1195	|| close (pipefd [1]) < 0	702	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
1196	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
1197	{
1198	X_UNLOCK (wrklock);
1199	return -1;
1200	}
1201		703
1202	close_pipe = pipefd [0];	704	SvCUR_set (sv, 0);
1203	}	705	SvPVX (sv) = 0;
		706	SvOK_off (sv);
1204		707
1205	X_UNLOCK (wrklock);	708	return 0;
1206
1207	return dup2 (close_pipe, fd) < 0 ? -1 : 0;
1208	}	709	}
		710
		711	static MGVTBL mmap_vtbl = {
		712	0, 0, 0, 0, mmap_free
		713	};
1209		714
1210	/*****************************************************************************/	715	/*****************************************************************************/
1211		716
1212	X_THREAD_PROC (aio_proc)	717	static SV *
		718	get_cb (SV *cb_sv)
1213	{	719	{
1214	aio_req req;	720	SvGETMAGIC (cb_sv);
1215	struct timespec ts;	721	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1216	worker *self = (worker *)thr_arg;
1217
1218	/* try to distribute timeouts somewhat randomly */
1219	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1220
1221	for (;;)
1222	{
1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1224
1225	X_LOCK (reqlock);
1226
1227	for (;;)
1228	{
1229	self->req = req = reqq_shift (&req_queue);
1230
1231	if (req)
1232	break;
1233
1234	++idle;
1235
1236	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1237	== ETIMEDOUT)
1238	{
1239	if (idle > max_idle)
1240	{
1241	--idle;
1242	X_UNLOCK (reqlock);
1243	X_LOCK (wrklock);
1244	--started;
1245	X_UNLOCK (wrklock);
1246	goto quit;
1247	}
1248
1249	/* we are allowed to idle, so do so without any timeout */
1250	X_COND_WAIT (reqwait, reqlock);
1251	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1252	}
1253
1254	--idle;
1255	}
1256
1257	--nready;
1258
1259	X_UNLOCK (reqlock);
1260
1261	errno = 0; /* strictly unnecessary */
1262
1263	if (!(req->flags & FLAG_CANCELLED))
1264	switch (req->type)
1265	{
1266	case REQ_READ: req->result = req->offs >= 0
1267	? pread (req->int1, req->ptr1, req->size, req->offs)
1268	: read (req->int1, req->ptr1, req->size); break;
1269	case REQ_WRITE: req->result = req->offs >= 0
1270	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1271	: write (req->int1, req->ptr1, req->size); break;
1272
1273	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1274	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1275
1276	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1277	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1278	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1279
1280	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1281	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1282	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1283	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1284	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1285	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1286
1287	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1288	case REQ_CLOSE: req->result = aio_close (req->int1); break;
1289	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1290	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1291	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1292	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1293	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1294	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1295	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1296	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1297
1298	case REQ_SYNC: req->result = 0; sync (); break;
1299	case REQ_FSYNC: req->result = fsync (req->int1); break;
1300	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1301
1302	case REQ_READDIR: scandir_ (req, self); break;
1303
1304	case REQ_BUSY:
1305	#ifdef _WIN32
1306	Sleep (req->nv1 * 1000.);
1307	#else
1308	{
1309	struct timeval tv;
1310
1311	tv.tv_sec = req->nv1;
1312	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1313
1314	req->result = select (0, 0, 0, 0, &tv);
1315	}
1316	#endif
1317	break;
1318
1319	case REQ_UTIME:
1320	case REQ_FUTIME:
1321	{
1322	struct timeval tv[2];
1323	struct timeval *times;
1324
1325	if (req->nv1 != -1. || req->nv2 != -1.)
1326	{
1327	tv[0].tv_sec = req->nv1;
1328	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1329	tv[1].tv_sec = req->nv2;
1330	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1331
1332	times = tv;
1333	}
1334	else
1335	times = 0;
1336
1337
1338	req->result = req->type == REQ_FUTIME
1339	? futimes (req->int1, times)
1340	: utimes (req->ptr1, times);
1341	}
1342
1343	case REQ_GROUP:
1344	case REQ_NOP:
1345	break;
1346
1347	case REQ_QUIT:
1348	goto quit;
1349
1350	default:
1351	req->result = -1;
1352	break;
1353	}
1354
1355	req->errorno = errno;
1356
1357	X_LOCK (reslock);
1358
1359	++npending;
1360
1361	if (!reqq_push (&res_queue, req))
1362	{
1363	/* write a dummy byte to the pipe so fh becomes ready */
1364	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1365
1366	/* optionally signal the main thread asynchronously */
1367	if (main_sig)
1368	pthread_kill (main_tid, main_sig);
1369	}
1370
1371	self->req = 0;
1372	worker_clear (self);
1373
1374	X_UNLOCK (reslock);
1375	}
1376
1377	quit:
1378	X_LOCK (wrklock);
1379	worker_free (self);
1380	X_UNLOCK (wrklock);
1381
1382	return 0;
1383	}
1384
1385	/*****************************************************************************/
1386
1387	static void atfork_prepare (void)
1388	{
1389	X_LOCK (wrklock);
1390	X_LOCK (reqlock);
1391	X_LOCK (reslock);
1392	#if !HAVE_PREADWRITE
1393	X_LOCK (preadwritelock);
1394	#endif
1395	#if !HAVE_READDIR_R
1396	X_LOCK (readdirlock);
1397	#endif
1398	}
1399
1400	static void atfork_parent (void)
1401	{
1402	#if !HAVE_READDIR_R
1403	X_UNLOCK (readdirlock);
1404	#endif
1405	#if !HAVE_PREADWRITE
1406	X_UNLOCK (preadwritelock);
1407	#endif
1408	X_UNLOCK (reslock);
1409	X_UNLOCK (reqlock);
1410	X_UNLOCK (wrklock);
1411	}
1412
1413	static void atfork_child (void)
1414	{
1415	aio_req prv;
1416
1417	while (prv = reqq_shift (&req_queue))
1418	req_destroy (prv);
1419
1420	while (prv = reqq_shift (&res_queue))
1421	req_destroy (prv);
1422
1423	while (wrk_first.next != &wrk_first)
1424	{
1425	worker *wrk = wrk_first.next;
1426
1427	if (wrk->req)
1428	req_destroy (wrk->req);
1429
1430	worker_clear (wrk);
1431	worker_free (wrk);
1432	}
1433
1434	started = 0;
1435	idle = 0;
1436	nreqs = 0;
1437	nready = 0;
1438	npending = 0;
1439
1440	create_respipe ();
1441
1442	atfork_parent ();
1443	}	722	}
1444		723
1445	#define dREQ \	724	#define dREQ \
		725	SV *cb_cv; \
1446	aio_req req; \	726	aio_req req; \
1447	int req_pri = next_pri; \	727	int req_pri = next_pri; \
1448	next_pri = DEFAULT_PRI + PRI_BIAS; \	728	next_pri = EIO_PRI_DEFAULT; \
1449	\	729	\
1450	if (SvOK (callback) && !SvROK (callback)) \	730	cb_cv = get_cb (callback); \
1451	croak ("callback must be undef or of reference type"); \
1452	\	731	\
1453	Newz (0, req, 1, aio_cb); \	732	Newz (0, req, 1, eio_req); \
1454	if (!req) \	733	if (!req) \
1455	croak ("out of memory during aio_req allocation"); \	734	croak ("out of memory during eio_req allocation"); \
1456	\	735	\
1457	req->callback = newSVsv (callback); \	736	req->callback = SvREFCNT_inc (cb_cv); \
1458	req->pri = req_pri	737	req->pri = req_pri
1459		738
1460	#define REQ_SEND \	739	#define REQ_SEND \
		740	PUTBACK; \
1461	req_send (req); \	741	req_submit (req); \
		742	SPAGAIN; \
1462	\	743	\
1463	if (GIMME_V != G_VOID) \	744	if (GIMME_V != G_VOID) \
1464	XPUSHs (req_sv (req, AIO_REQ_KLASS));	745	XPUSHs (req_sv (req, aio_req_stash));
1465		746
1466	MODULE = IO::AIO PACKAGE = IO::AIO	747	MODULE = IO::AIO PACKAGE = IO::AIO
1467		748
1468	PROTOTYPES: ENABLE	749	PROTOTYPES: ENABLE
1469		750
1470	BOOT:	751	BOOT:
1471	{	752	{
		753	static const struct {
		754	const char *name;
		755	IV iv;
		756	} *civ, const_iv[] = {
		757	# define const_niv(name, value) { # name, (IV) value },
		758	# define const_iv(name) { # name, (IV) name },
		759	# define const_eio(name) { # name, (IV) EIO_ ## name },
		760	const_iv (EXDEV)
		761	const_iv (ENOSYS)
		762	const_iv (O_RDONLY)
		763	const_iv (O_WRONLY)
		764	const_iv (O_RDWR)
		765	const_iv (O_CREAT)
		766	const_iv (O_TRUNC)
		767	const_iv (O_EXCL)
		768	const_iv (O_APPEND)
		769
		770	const_iv (S_IFIFO)
		771	const_iv (S_IFCHR)
		772	const_iv (S_IFBLK)
		773	const_iv (S_IFLNK)
		774	const_iv (S_IFREG)
		775	const_iv (S_IFDIR)
		776	const_iv (S_IFWHT)
		777	const_iv (S_IFSOCK)
		778	const_iv (S_IFMT)
		779
		780	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		781	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		782	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		783	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		784	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		785	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		786
		787	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		788	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		789	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		790	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		791	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		792
		793	const_iv (ST_RDONLY)
		794	const_iv (ST_NOSUID)
		795	const_iv (ST_NODEV)
		796	const_iv (ST_NOEXEC)
		797	const_iv (ST_SYNCHRONOUS)
		798	const_iv (ST_MANDLOCK)
		799	const_iv (ST_WRITE)
		800	const_iv (ST_APPEND)
		801	const_iv (ST_IMMUTABLE)
		802	const_iv (ST_NOATIME)
		803	const_iv (ST_NODIRATIME)
		804	const_iv (ST_RELATIME)
		805
		806	const_iv (PROT_NONE)
		807	const_iv (PROT_EXEC)
		808	const_iv (PROT_READ)
		809	const_iv (PROT_WRITE)
		810
		811	/*const_iv (MAP_FIXED)*/
		812	const_iv (MAP_PRIVATE)
		813	const_iv (MAP_SHARED)
		814	const_iv (MAP_ANONYMOUS)
		815
		816	/* linuxish */
		817	const_iv (MAP_HUGETLB)
		818	const_iv (MAP_LOCKED)
		819	const_iv (MAP_NORESERVE)
		820	const_iv (MAP_POPULATE)
		821	const_iv (MAP_NONBLOCK)
		822
		823	const_eio (MCL_FUTURE)
		824	const_eio (MCL_CURRENT)
		825
		826	const_eio (MS_ASYNC)
		827	const_eio (MS_INVALIDATE)
		828	const_eio (MS_SYNC)
		829
		830	const_eio (MT_MODIFY)
		831
		832	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		833	const_eio (SYNC_FILE_RANGE_WRITE)
		834	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		835
		836	const_eio (READDIR_DENTS)
		837	const_eio (READDIR_DIRS_FIRST)
		838	const_eio (READDIR_STAT_ORDER)
		839	const_eio (READDIR_FOUND_UNKNOWN)
		840
		841	const_eio (DT_UNKNOWN)
		842	const_eio (DT_FIFO)
		843	const_eio (DT_CHR)
		844	const_eio (DT_DIR)
		845	const_eio (DT_BLK)
		846	const_eio (DT_REG)
		847	const_eio (DT_LNK)
		848	const_eio (DT_SOCK)
		849	const_eio (DT_WHT)
		850	};
		851
1472	stash = gv_stashpv ("IO::AIO", 1);	852	aio_stash = gv_stashpv ("IO::AIO" , 1);
		853	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		854	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1473		855
1474	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	856	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1475	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	857	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1476	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1477	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1478	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1479	#ifdef _WIN32
1480	X_MUTEX_CHECK (wrklock);
1481	X_MUTEX_CHECK (reslock);
1482	X_MUTEX_CHECK (reqlock);
1483	X_MUTEX_CHECK (reqwait);
1484	X_MUTEX_CHECK (preadwritelock);
1485	X_MUTEX_CHECK (readdirlock);
1486		858
1487	X_COND_CHECK (reqwait);	859	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1488	#else
1489	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1490	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1491	#endif
1492		860
1493	create_respipe ();	861	create_respipe ();
1494		862
1495	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	863	if (eio_init (want_poll, done_poll) < 0)
1496	}	864	croak ("IO::AIO: unable to initialise eio library");
1497		865
		866	/* atfork child called in fifo order, so before eio's handler */
		867	X_THREAD_ATFORK (0, 0, atfork_child);
		868	}
		869
1498	void	870	void
1499	max_poll_reqs (int nreqs)	871	max_poll_reqs (unsigned int nreqs)
1500	PROTOTYPE: $	872	PROTOTYPE: $
1501	CODE:	873	CODE:
1502	max_poll_reqs = nreqs;	874	eio_set_max_poll_reqs (nreqs);
1503		875
1504	void	876	void
1505	max_poll_time (double nseconds)	877	max_poll_time (double nseconds)
1506	PROTOTYPE: $	878	PROTOTYPE: $
1507	CODE:	879	CODE:
1508	max_poll_time = nseconds * AIO_TICKS;	880	eio_set_max_poll_time (nseconds);
1509		881
1510	void	882	void
1511	min_parallel (int nthreads)	883	min_parallel (unsigned int nthreads)
1512	PROTOTYPE: $
1513
1514	void
1515	max_parallel (int nthreads)
1516	PROTOTYPE: $
1517
1518	void
1519	max_idle (int nthreads)
1520	PROTOTYPE: $	884	PROTOTYPE: $
1521	CODE:	885	CODE:
1522	set_max_idle (nthreads);	886	eio_set_min_parallel (nthreads);
1523		887
1524	int	888	void
1525	max_outstanding (int maxreqs)	889	max_parallel (unsigned int nthreads)
1526	PROTOTYPE: $	890	PROTOTYPE: $
1527	CODE:	891	CODE:
1528	RETVAL = max_outstanding;	892	eio_set_max_parallel (nthreads);
		893
		894	void
		895	max_idle (unsigned int nthreads)
		896	PROTOTYPE: $
		897	CODE:
		898	eio_set_max_idle (nthreads);
		899
		900	void
		901	idle_timeout (unsigned int seconds)
		902	PROTOTYPE: $
		903	CODE:
		904	eio_set_idle_timeout (seconds);
		905
		906	void
		907	max_outstanding (unsigned int maxreqs)
		908	PROTOTYPE: $
		909	CODE:
1529	max_outstanding = maxreqs;	910	max_outstanding = maxreqs;
1530	OUTPUT:
1531	RETVAL
1532		911
1533	void	912	void
1534	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	913	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1535	PROTOTYPE: $$$;$
1536	PPCODE:	914	PPCODE:
1537	{	915	{
1538	dREQ;	916	dREQ;
1539		917
1540	req->type = REQ_OPEN;	918	req->type = EIO_OPEN;
1541	req->sv1 = newSVsv (pathname);	919	req->sv1 = newSVsv (pathname);
1542	req->ptr1 = SvPVbyte_nolen (req->sv1);	920	req->ptr1 = SvPVbyte_nolen (req->sv1);
1543	req->int1 = flags;	921	req->int1 = flags;
1544	req->mode = mode;	922	req->int2 = mode;
1545		923
1546	REQ_SEND;	924	REQ_SEND;
1547	}	925	}
1548		926
1549	void	927	void
1550	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	928	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1551	PROTOTYPE: $;$
1552	ALIAS:	929	ALIAS:
1553	aio_fsync = REQ_FSYNC	930	aio_fsync = EIO_FSYNC
1554	aio_fdatasync = REQ_FDATASYNC	931	aio_fdatasync = EIO_FDATASYNC
1555	PPCODE:	932	PPCODE:
1556	{	933	{
		934	int fd = s_fileno_croak (fh, 0);
1557	dREQ;	935	dREQ;
1558		936
1559	req->type = ix;	937	req->type = ix;
1560	req->sv1 = newSVsv (fh);	938	req->sv1 = newSVsv (fh);
1561	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	939	req->int1 = fd;
1562		940
1563	REQ_SEND (req);	941	REQ_SEND (req);
1564	}	942	}
1565		943
1566	void	944	void
		945	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		946	PPCODE:
		947	{
		948	int fd = s_fileno_croak (fh, 0);
		949	dREQ;
		950
		951	req->type = EIO_SYNC_FILE_RANGE;
		952	req->sv1 = newSVsv (fh);
		953	req->int1 = fd;
		954	req->offs = offset;
		955	req->size = nbytes;
		956	req->int2 = flags;
		957
		958	REQ_SEND (req);
		959	}
		960
		961	void
1567	aio_close (SV *fh, SV *callback=&PL_sv_undef)	962	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1568	PROTOTYPE: $;$
1569	PPCODE:	963	PPCODE:
1570	{	964	{
		965	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		966	int fd = s_fileno_croak (fh, 0);
1571	dREQ;	967	dREQ;
1572		968
		969	if (close_pipe < 0)
		970	{
		971	int pipefd [2];
		972
		973	if (pipe (pipefd) < 0
		974	|| close (pipefd [1]) < 0
		975	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		976	abort (); /*D*/
		977
		978	close_pipe = pipefd [0];
		979	}
		980
1573	req->type = REQ_CLOSE;	981	req->type = EIO_DUP2;
1574	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	982	req->int1 = close_pipe;
		983	req->sv2 = newSVsv (fh);
		984	req->int2 = fd;
1575		985
1576	REQ_SEND (req);	986	REQ_SEND (req);
1577	}	987	}
1578		988
1579	void	989	void
1580	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	990	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1581	ALIAS:	991	ALIAS:
1582	aio_read = REQ_READ	992	aio_read = EIO_READ
1583	aio_write = REQ_WRITE	993	aio_write = EIO_WRITE
1584	PROTOTYPE: $$$$$;$
1585	PPCODE:	994	PPCODE:
1586	{	995	{
1587	STRLEN svlen;	996	STRLEN svlen;
		997	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1588	char *svptr = SvPVbyte (data, svlen);	998	char *svptr = SvPVbyte (data, svlen);
1589	UV len = SvUV (length);	999	UV len = SvUV (length);
1590		1000
1591	SvUPGRADE (data, SVt_PV);
1592	SvPOK_on (data);
1593
1594	if (dataoffset < 0)	1001	if (dataoffset < 0)
1595	dataoffset += svlen;	1002	dataoffset += svlen;
1596		1003
1597	if (dataoffset < 0 || dataoffset > svlen)	1004	if (dataoffset < 0 || dataoffset > svlen)
1598	croak ("dataoffset outside of data scalar");	1005	croak ("dataoffset outside of data scalar");
1599		1006
1600	if (ix == REQ_WRITE)	1007	if (ix == EIO_WRITE)
1601	{	1008	{
1602	/* write: check length and adjust. */	1009	/* write: check length and adjust. */
1603	if (!SvOK (length) || len + dataoffset > svlen)	1010	if (!SvOK (length) || len + dataoffset > svlen)
1604	len = svlen - dataoffset;	1011	len = svlen - dataoffset;
1605	}	1012	}
1606	else	1013	else
1607	{	1014	{
1608	/* read: grow scalar as necessary */	1015	/* read: check type and grow scalar as necessary */
		1016	SvUPGRADE (data, SVt_PV);
1609	svptr = SvGROW (data, len + dataoffset + 1);	1017	svptr = SvGROW (data, len + dataoffset + 1);
1610	}	1018	}
1611		1019
1612	if (len < 0)
1613	croak ("length must not be negative");
1614
1615	{	1020	{
1616	dREQ;	1021	dREQ;
1617		1022
1618	req->type = ix;	1023	req->type = ix;
1619	req->sv1 = newSVsv (fh);	1024	req->sv1 = newSVsv (fh);
1620	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1025	req->int1 = fd;
1621	: IoOFP (sv_2io (fh)));
1622	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1026	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1623	req->size = len;	1027	req->size = len;
1624	req->sv2 = SvREFCNT_inc (data);	1028	req->sv2 = SvREFCNT_inc (data);
1625	req->ptr1 = (char *)svptr + dataoffset;	1029	req->ptr2 = (char *)svptr + dataoffset;
1626	req->stroffset = dataoffset;	1030	req->stroffset = dataoffset;
1627		1031
1628	if (!SvREADONLY (data))	1032	if (!SvREADONLY (data))
1629	{	1033	{
1630	SvREADONLY_on (data);	1034	SvREADONLY_on (data);
…		…
1635	}	1039	}
1636	}	1040	}
1637		1041
1638	void	1042	void
1639	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1043	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1640	PROTOTYPE: $$;$
1641	PPCODE:	1044	PPCODE:
1642	{	1045	{
1643	SV *data;	1046	SV *data;
1644	dREQ;	1047	dREQ;
1645		1048
1646	data = newSV (NAME_MAX);
1647	SvPOK_on (data);
1648
1649	req->type = REQ_READLINK;	1049	req->type = EIO_READLINK;
1650	req->sv1 = newSVsv (path);	1050	req->sv1 = newSVsv (path);
1651	req->ptr2 = SvPVbyte_nolen (req->sv1);	1051	req->ptr1 = SvPVbyte_nolen (req->sv1);
1652	req->sv2 = data;
1653	req->ptr1 = SvPVbyte_nolen (data);
1654		1052
1655	REQ_SEND;	1053	REQ_SEND;
1656	}	1054	}
1657		1055
1658	void	1056	void
1659	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	1057	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1660	PROTOTYPE: $$$$;$
1661	PPCODE:	1058	PPCODE:
1662	{	1059	{
		1060	int ifd = s_fileno_croak (in_fh , 0);
		1061	int ofd = s_fileno_croak (out_fh, 1);
1663	dREQ;	1062	dREQ;
1664		1063
1665	req->type = REQ_SENDFILE;	1064	req->type = EIO_SENDFILE;
1666	req->sv1 = newSVsv (out_fh);	1065	req->sv1 = newSVsv (out_fh);
1667	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1066	req->int1 = ofd;
1668	req->sv2 = newSVsv (in_fh);	1067	req->sv2 = newSVsv (in_fh);
1669	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1068	req->int2 = ifd;
1670	req->offs = SvVAL64 (in_offset);	1069	req->offs = in_offset;
1671	req->size = length;	1070	req->size = length;
1672		1071
1673	REQ_SEND;	1072	REQ_SEND;
1674	}	1073	}
1675		1074
1676	void	1075	void
1677	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	1076	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1678	PROTOTYPE: $$$;$
1679	PPCODE:	1077	PPCODE:
1680	{	1078	{
		1079	int fd = s_fileno_croak (fh, 0);
1681	dREQ;	1080	dREQ;
1682		1081
1683	req->type = REQ_READAHEAD;	1082	req->type = EIO_READAHEAD;
1684	req->sv1 = newSVsv (fh);	1083	req->sv1 = newSVsv (fh);
1685	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1084	req->int1 = fd;
1686	req->offs = SvVAL64 (offset);	1085	req->offs = offset;
1687	req->size = length;	1086	req->size = length;
1688		1087
1689	REQ_SEND;	1088	REQ_SEND;
1690	}	1089	}
1691		1090
1692	void	1091	void
1693	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	1092	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1694	ALIAS:	1093	ALIAS:
1695	aio_stat = REQ_STAT	1094	aio_stat = EIO_STAT
1696	aio_lstat = REQ_LSTAT	1095	aio_lstat = EIO_LSTAT
		1096	aio_statvfs = EIO_STATVFS
1697	PPCODE:	1097	PPCODE:
1698	{	1098	{
1699	dREQ;	1099	dREQ;
1700		1100
1701	req->ptr2 = malloc (sizeof (Stat_t));
1702	if (!req->ptr2)
1703	{
1704	req_destroy (req);
1705	croak ("out of memory during aio_stat statdata allocation");
1706	}
1707
1708	req->flags |= FLAG_PTR2_FREE;
1709	req->sv1 = newSVsv (fh_or_path);	1101	req->sv1 = newSVsv (fh_or_path);
1710		1102
1711	if (SvPOK (fh_or_path))	1103	if (SvPOK (req->sv1))
1712	{	1104	{
1713	req->type = ix;	1105	req->type = ix;
1714	req->ptr1 = SvPVbyte_nolen (req->sv1);	1106	req->ptr1 = SvPVbyte_nolen (req->sv1);
1715	}	1107	}
1716	else	1108	else
1717	{	1109	{
1718	req->type = REQ_FSTAT;	1110	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1719	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1111	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1720	}	1112	}
1721		1113
1722	REQ_SEND;	1114	REQ_SEND;
1723	}	1115	}
		1116
		1117	UV
		1118	major (UV dev)
		1119	ALIAS:
		1120	minor = 1
		1121	CODE:
		1122	RETVAL = ix ? major (dev) : minor (dev);
		1123	OUTPUT:
		1124	RETVAL
		1125
		1126	UV
		1127	makedev (UV maj, UV min)
		1128	CODE:
		1129	RETVAL = makedev (maj, min);
		1130	OUTPUT:
		1131	RETVAL
1724		1132
1725	void	1133	void
1726	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1134	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
1727	PPCODE:	1135	PPCODE:
1728	{	1136	{
…		…
1730		1138
1731	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1139	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1732	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1140	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1733	req->sv1 = newSVsv (fh_or_path);	1141	req->sv1 = newSVsv (fh_or_path);
1734		1142
1735	if (SvPOK (fh_or_path))	1143	if (SvPOK (req->sv1))
1736	{	1144	{
1737	req->type = REQ_UTIME;	1145	req->type = EIO_UTIME;
1738	req->ptr1 = SvPVbyte_nolen (req->sv1);	1146	req->ptr1 = SvPVbyte_nolen (req->sv1);
1739	}	1147	}
1740	else	1148	else
1741	{	1149	{
1742	req->type = REQ_FUTIME;	1150	req->type = EIO_FUTIME;
1743	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1151	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1744	}	1152	}
1745		1153
1746	REQ_SEND;	1154	REQ_SEND;
1747	}	1155	}
…		…
1753	dREQ;	1161	dREQ;
1754		1162
1755	req->sv1 = newSVsv (fh_or_path);	1163	req->sv1 = newSVsv (fh_or_path);
1756	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1164	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1757		1165
1758	if (SvPOK (fh_or_path))	1166	if (SvPOK (req->sv1))
1759	{	1167	{
1760	req->type = REQ_TRUNCATE;	1168	req->type = EIO_TRUNCATE;
1761	req->ptr1 = SvPVbyte_nolen (req->sv1);	1169	req->ptr1 = SvPVbyte_nolen (req->sv1);
1762	}	1170	}
1763	else	1171	else
1764	{	1172	{
1765	req->type = REQ_FTRUNCATE;	1173	req->type = EIO_FTRUNCATE;
1766	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1174	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1767	}	1175	}
1768		1176
1769	REQ_SEND;	1177	REQ_SEND;
1770	}	1178	}
1771		1179
1772	void	1180	void
1773	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1181	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1182	ALIAS:
		1183	aio_chmod = EIO_CHMOD
		1184	aio_mkdir = EIO_MKDIR
1774	PPCODE:	1185	PPCODE:
1775	{	1186	{
1776	dREQ;	1187	dREQ;
1777		1188
1778	req->mode = mode;	1189	req->int2 = mode;
1779	req->sv1 = newSVsv (fh_or_path);	1190	req->sv1 = newSVsv (fh_or_path);
1780		1191
1781	if (SvPOK (fh_or_path))	1192	if (SvPOK (req->sv1))
1782	{	1193	{
1783	req->type = REQ_CHMOD;	1194	req->type = ix;
1784	req->ptr1 = SvPVbyte_nolen (req->sv1);	1195	req->ptr1 = SvPVbyte_nolen (req->sv1);
1785	}	1196	}
1786	else	1197	else
1787	{	1198	{
1788	req->type = REQ_FCHMOD;	1199	req->type = EIO_FCHMOD;
1789	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1200	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1790	}	1201	}
1791		1202
1792	REQ_SEND;	1203	REQ_SEND;
1793	}	1204	}
…		…
1800		1211
1801	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1212	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1802	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1213	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1803	req->sv1 = newSVsv (fh_or_path);	1214	req->sv1 = newSVsv (fh_or_path);
1804		1215
1805	if (SvPOK (fh_or_path))	1216	if (SvPOK (req->sv1))
1806	{	1217	{
1807	req->type = REQ_CHOWN;	1218	req->type = EIO_CHOWN;
1808	req->ptr1 = SvPVbyte_nolen (req->sv1);	1219	req->ptr1 = SvPVbyte_nolen (req->sv1);
1809	}	1220	}
1810	else	1221	else
1811	{	1222	{
1812	req->type = REQ_FCHOWN;	1223	req->type = EIO_FCHOWN;
1813	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1224	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1814	}	1225	}
1815		1226
1816	REQ_SEND;	1227	REQ_SEND;
1817	}	1228	}
1818		1229
1819	void	1230	void
		1231	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1232	PPCODE:
		1233	{
		1234	dREQ;
		1235
		1236	req->type = EIO_READDIR;
		1237	req->sv1 = newSVsv (pathname);
		1238	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1239	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1240
		1241	if (flags & EIO_READDIR_DENTS)
		1242	req->int1 |= EIO_READDIR_CUSTOM2;
		1243
		1244	REQ_SEND;
		1245	}
		1246
		1247	void
1820	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1248	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1821	ALIAS:	1249	ALIAS:
1822	aio_unlink = REQ_UNLINK	1250	aio_unlink = EIO_UNLINK
1823	aio_rmdir = REQ_RMDIR	1251	aio_rmdir = EIO_RMDIR
1824	aio_readdir = REQ_READDIR	1252	aio_readdir = EIO_READDIR
1825	PPCODE:	1253	PPCODE:
1826	{	1254	{
1827	dREQ;	1255	dREQ;
1828		1256
1829	req->type = ix;	1257	req->type = ix;
…		…
1832		1260
1833	REQ_SEND;	1261	REQ_SEND;
1834	}	1262	}
1835		1263
1836	void	1264	void
1837	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1838	PPCODE:
1839	{
1840	dREQ;
1841
1842	req->type = REQ_MKDIR;
1843	req->sv1 = newSVsv (pathname);
1844	req->ptr1 = SvPVbyte_nolen (req->sv1);
1845	req->mode = mode;
1846
1847	REQ_SEND;
1848	}
1849
1850	void
1851	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1265	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1852	ALIAS:	1266	ALIAS:
1853	aio_link = REQ_LINK	1267	aio_link = EIO_LINK
1854	aio_symlink = REQ_SYMLINK	1268	aio_symlink = EIO_SYMLINK
1855	aio_rename = REQ_RENAME	1269	aio_rename = EIO_RENAME
1856	PPCODE:	1270	PPCODE:
1857	{	1271	{
1858	dREQ;	1272	dREQ;
1859		1273
1860	req->type = ix;	1274	req->type = ix;
1861	req->sv2 = newSVsv (oldpath);	1275	req->sv1 = newSVsv (oldpath);
		1276	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1277	req->sv2 = newSVsv (newpath);
1862	req->ptr2 = SvPVbyte_nolen (req->sv2);	1278	req->ptr2 = SvPVbyte_nolen (req->sv2);
1863	req->sv1 = newSVsv (newpath);
1864	req->ptr1 = SvPVbyte_nolen (req->sv1);
1865		1279
1866	REQ_SEND;	1280	REQ_SEND;
1867	}	1281	}
1868		1282
1869	void	1283	void
1870	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1284	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1871	PPCODE:	1285	PPCODE:
1872	{	1286	{
1873	dREQ;	1287	dREQ;
1874		1288
1875	req->type = REQ_MKNOD;	1289	req->type = EIO_MKNOD;
1876	req->sv1 = newSVsv (pathname);	1290	req->sv1 = newSVsv (pathname);
1877	req->ptr1 = SvPVbyte_nolen (req->sv1);	1291	req->ptr1 = SvPVbyte_nolen (req->sv1);
1878	req->mode = (mode_t)mode;	1292	req->int2 = (mode_t)mode;
1879	req->offs = dev;	1293	req->offs = dev;
1880		1294
1881	REQ_SEND;	1295	REQ_SEND;
1882	}	1296	}
1883		1297
1884	void	1298	void
		1299	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1300	ALIAS:
		1301	aio_mtouch = EIO_MTOUCH
		1302	aio_msync = EIO_MSYNC
		1303	PPCODE:
		1304	{
		1305	STRLEN svlen;
		1306	char *svptr = SvPVbyte (data, svlen);
		1307	UV len = SvUV (length);
		1308
		1309	if (offset < 0)
		1310	offset += svlen;
		1311
		1312	if (offset < 0 || offset > svlen)
		1313	croak ("offset outside of scalar");
		1314
		1315	if (!SvOK (length) || len + offset > svlen)
		1316	len = svlen - offset;
		1317
		1318	{
		1319	dREQ;
		1320
		1321	req->type = ix;
		1322	req->sv2 = SvREFCNT_inc (data);
		1323	req->ptr2 = (char *)svptr + offset;
		1324	req->size = len;
		1325	req->int1 = flags;
		1326
		1327	REQ_SEND;
		1328	}
		1329	}
		1330
		1331	void
		1332	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1333	PPCODE:
		1334	{
		1335	STRLEN svlen;
		1336	char *svptr = SvPVbyte (data, svlen);
		1337	UV len = SvUV (length);
		1338
		1339	if (offset < 0)
		1340	offset += svlen;
		1341
		1342	if (offset < 0 || offset > svlen)
		1343	croak ("offset outside of scalar");
		1344
		1345	if (!SvOK (length) || len + offset > svlen)
		1346	len = svlen - offset;
		1347
		1348	{
		1349	dREQ;
		1350
		1351	req->type = EIO_MLOCK;
		1352	req->sv2 = SvREFCNT_inc (data);
		1353	req->ptr2 = (char *)svptr + offset;
		1354	req->size = len;
		1355
		1356	REQ_SEND;
		1357	}
		1358	}
		1359
		1360	void
		1361	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1362	PPCODE:
		1363	{
		1364	dREQ;
		1365
		1366	req->type = EIO_MLOCKALL;
		1367	req->int1 = flags;
		1368
		1369	REQ_SEND;
		1370	}
		1371
		1372	void
1885	aio_busy (double delay, SV *callback=&PL_sv_undef)	1373	aio_busy (double delay, SV *callback=&PL_sv_undef)
1886	PPCODE:	1374	PPCODE:
1887	{	1375	{
1888	dREQ;	1376	dREQ;
1889		1377
1890	req->type = REQ_BUSY;	1378	req->type = EIO_BUSY;
1891	req->nv1 = delay < 0. ? 0. : delay;	1379	req->nv1 = delay < 0. ? 0. : delay;
1892		1380
1893	REQ_SEND;	1381	REQ_SEND;
1894	}	1382	}
1895		1383
1896	void	1384	void
1897	aio_group (SV *callback=&PL_sv_undef)	1385	aio_group (SV *callback=&PL_sv_undef)
1898	PROTOTYPE: ;$
1899	PPCODE:	1386	PPCODE:
1900	{	1387	{
1901	dREQ;	1388	dREQ;
1902		1389
1903	req->type = REQ_GROUP;	1390	req->type = EIO_GROUP;
1904		1391
1905	req_send (req);	1392	req_submit (req);
1906	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1393	XPUSHs (req_sv (req, aio_grp_stash));
1907	}	1394	}
1908		1395
1909	void	1396	void
1910	aio_nop (SV *callback=&PL_sv_undef)	1397	aio_nop (SV *callback=&PL_sv_undef)
1911	ALIAS:	1398	ALIAS:
1912	aio_nop = REQ_NOP	1399	aio_nop = EIO_NOP
1913	aio_sync = REQ_SYNC	1400	aio_sync = EIO_SYNC
1914	PPCODE:	1401	PPCODE:
1915	{	1402	{
1916	dREQ;	1403	dREQ;
1917		1404
1918	req->type = ix;	1405	req->type = ix;
…		…
1920	REQ_SEND;	1407	REQ_SEND;
1921	}	1408	}
1922		1409
1923	int	1410	int
1924	aioreq_pri (int pri = 0)	1411	aioreq_pri (int pri = 0)
1925	PROTOTYPE: ;$
1926	CODE:	1412	CODE:
1927	RETVAL = next_pri - PRI_BIAS;	1413	RETVAL = next_pri;
1928	if (items > 0)	1414	if (items > 0)
1929	{	1415	{
1930	if (pri < PRI_MIN) pri = PRI_MIN;	1416	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1931	if (pri > PRI_MAX) pri = PRI_MAX;	1417	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1932	next_pri = pri + PRI_BIAS;	1418	next_pri = pri;
1933	}	1419	}
1934	OUTPUT:	1420	OUTPUT:
1935	RETVAL	1421	RETVAL
1936		1422
1937	void	1423	void
1938	aioreq_nice (int nice = 0)	1424	aioreq_nice (int nice = 0)
1939	CODE:	1425	CODE:
1940	nice = next_pri - nice;	1426	nice = next_pri - nice;
1941	if (nice < PRI_MIN) nice = PRI_MIN;	1427	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1942	if (nice > PRI_MAX) nice = PRI_MAX;	1428	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1943	next_pri = nice + PRI_BIAS;	1429	next_pri = nice;
1944		1430
1945	void	1431	void
1946	flush ()	1432	flush ()
1947	PROTOTYPE:
1948	CODE:	1433	CODE:
1949	while (nreqs)	1434	while (eio_nreqs ())
1950	{	1435	{
1951	poll_wait ();	1436	poll_wait ();
1952	poll_cb ();	1437	poll_cb ();
1953	}	1438	}
1954		1439
1955	int	1440	int
1956	poll()	1441	poll ()
1957	PROTOTYPE:
1958	CODE:	1442	CODE:
1959	poll_wait ();	1443	poll_wait ();
1960	RETVAL = poll_cb ();	1444	RETVAL = poll_cb ();
1961	OUTPUT:	1445	OUTPUT:
1962	RETVAL	1446	RETVAL
1963		1447
1964	int	1448	int
1965	poll_fileno()	1449	poll_fileno ()
1966	PROTOTYPE:
1967	CODE:	1450	CODE:
1968	RETVAL = respipe [0];	1451	RETVAL = s_epipe_fd (&respipe);
1969	OUTPUT:	1452	OUTPUT:
1970	RETVAL	1453	RETVAL
1971		1454
1972	int	1455	int
1973	poll_cb(...)	1456	poll_cb (...)
1974	PROTOTYPE:	1457	PROTOTYPE:
1975	CODE:	1458	CODE:
1976	RETVAL = poll_cb ();	1459	RETVAL = poll_cb ();
1977	OUTPUT:	1460	OUTPUT:
1978	RETVAL	1461	RETVAL
1979		1462
1980	void	1463	void
1981	poll_wait()	1464	poll_wait ()
1982	PROTOTYPE:
1983	CODE:	1465	CODE:
1984	poll_wait ();	1466	poll_wait ();
1985		1467
1986	void
1987	setsig (int signum = SIGIO)
1988	PROTOTYPE: ;$
1989	CODE:
1990	{
1991	if (block_sig_level)
1992	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1993
1994	X_LOCK (reslock);
1995	main_tid = pthread_self ();
1996	main_sig = signum;
1997	X_UNLOCK (reslock);
1998
1999	if (main_sig && npending)
2000	pthread_kill (main_tid, main_sig);
2001	}
2002
2003	void
2004	aio_block (SV *cb)
2005	PROTOTYPE: &
2006	PPCODE:
2007	{
2008	int count;
2009
2010	block_sig ();
2011	PUSHMARK (SP);
2012	PUTBACK;
2013	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
2014	unblock_sig ();
2015
2016	if (SvTRUE (ERRSV))
2017	croak (0);
2018
2019	XSRETURN (count);
2020	}
2021
2022	int	1468	int
2023	nreqs()	1469	nreqs ()
2024	PROTOTYPE:
2025	CODE:	1470	CODE:
2026	RETVAL = nreqs;	1471	RETVAL = eio_nreqs ();
2027	OUTPUT:	1472	OUTPUT:
2028	RETVAL	1473	RETVAL
2029		1474
2030	int	1475	int
2031	nready()	1476	nready ()
2032	PROTOTYPE:
2033	CODE:	1477	CODE:
2034	RETVAL = get_nready ();	1478	RETVAL = eio_nready ();
2035	OUTPUT:	1479	OUTPUT:
2036	RETVAL	1480	RETVAL
2037		1481
2038	int	1482	int
2039	npending()	1483	npending ()
2040	PROTOTYPE:
2041	CODE:	1484	CODE:
2042	RETVAL = get_npending ();	1485	RETVAL = eio_npending ();
2043	OUTPUT:	1486	OUTPUT:
2044	RETVAL	1487	RETVAL
2045		1488
2046	int	1489	int
2047	nthreads()	1490	nthreads ()
2048	PROTOTYPE:
2049	CODE:	1491	CODE:
2050	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1492	RETVAL = eio_nthreads ();
2051	RETVAL = started;
2052	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2053	OUTPUT:	1493	OUTPUT:
2054	RETVAL	1494	RETVAL
2055		1495
		1496	int
		1497	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1498	CODE:
		1499	RETVAL = posix_fadvise (fh, offset, length, advice);
		1500	OUTPUT:
		1501	RETVAL
		1502
		1503	ssize_t
		1504	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1505	CODE:
		1506	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	void
		1511	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1512	PPCODE:
		1513	sv_unmagic (scalar, MMAP_MAGIC);
		1514	{
		1515	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1516	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1517	if (addr == (void *)-1)
		1518	XSRETURN_NO;
		1519
		1520	sv_force_normal (scalar);
		1521
		1522	/* we store the length in mg_obj, as namlen is I32 :/ */
		1523	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1524	->mg_obj = (SV *)length;
		1525
		1526	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1527
		1528	if (!(prot & PROT_WRITE))
		1529	SvREADONLY_on (scalar);
		1530
		1531	if (SvLEN (scalar))
		1532	Safefree (SvPVX (scalar));
		1533
		1534	SvPVX (scalar) = (char *)addr;
		1535	SvCUR_set (scalar, length);
		1536	SvLEN_set (scalar, 0);
		1537	SvPOK_only (scalar);
		1538
		1539	XSRETURN_YES;
		1540	}
		1541
		1542	void
		1543	munmap (SV *scalar)
		1544	CODE:
		1545	sv_unmagic (scalar, MMAP_MAGIC);
		1546
		1547	int
		1548	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1549	ALIAS:
		1550	mprotect = 1
		1551	CODE:
		1552	{
		1553	STRLEN svlen;
		1554	void *addr = SvPVbyte (scalar, svlen);
		1555	size_t len = SvUV (length);
		1556
		1557	if (offset < 0)
		1558	offset += svlen;
		1559
		1560	if (offset < 0 || offset > svlen)
		1561	croak ("offset outside of scalar");
		1562
		1563	if (!SvOK (length) || len + offset > svlen)
		1564	len = svlen - offset;
		1565
		1566	addr = (void *)(((intptr_t)addr) + offset);
		1567	eio_page_align (&addr, &len);
		1568
		1569	switch (ix)
		1570	{
		1571	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1572	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1573	}
		1574	}
		1575	OUTPUT:
		1576	RETVAL
		1577
		1578	int
		1579	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1580	CODE:
		1581	{
		1582	STRLEN svlen;
		1583	void *addr = SvPVbyte (scalar, svlen);
		1584	size_t len = SvUV (length);
		1585
		1586	if (offset < 0)
		1587	offset += svlen;
		1588
		1589	if (offset < 0 || offset > svlen)
		1590	croak ("offset outside of scalar");
		1591
		1592	if (!SvOK (length) || len + offset > svlen)
		1593	len = svlen - offset;
		1594
		1595	addr = (void *)(((intptr_t)addr) + offset);
		1596	eio_page_align (&addr, &len);
		1597	#if _POSIX_MEMLOCK_RANGE
		1598	RETVAL = munlock (addr, len);
		1599	#else
		1600	RETVAL = ((errno = ENOSYS), -1);
		1601	#endif
		1602	}
		1603	OUTPUT:
		1604	RETVAL
		1605
		1606	int
		1607	munlockall ()
		1608	CODE:
		1609	#if _POSIX_MEMLOCK
		1610	munlockall ();
		1611	#else
		1612	RETVAL = -1;
		1613	errno = ENOSYS;
		1614	#endif
		1615	OUTPUT:
		1616	RETVAL
		1617
		1618	void _on_next_submit (SV *cb)
		1619	CODE:
		1620	SvREFCNT_dec (on_next_submit);
		1621	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1622
2056	PROTOTYPES: DISABLE	1623	PROTOTYPES: DISABLE
2057		1624
2058	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1625	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2059		1626
2060	void	1627	void
2061	cancel (aio_req_ornot req)	1628	cancel (aio_req_ornot req)
2062	CODE:	1629	CODE:
2063	req_cancel (req);	1630	eio_cancel (req);
2064		1631
2065	void	1632	void
2066	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1633	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2067	CODE:	1634	PPCODE:
		1635	{
		1636	if (GIMME_V != G_VOID)
		1637	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1638
		1639	if (items > 1)
		1640	{
		1641	SV *cb_cv =get_cb (callback);
		1642
2068	SvREFCNT_dec (req->callback);	1643	SvREFCNT_dec (req->callback);
2069	req->callback = newSVsv (callback);	1644	req->callback = SvREFCNT_inc (cb_cv);
		1645	}
		1646	}
2070		1647
2071	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1648	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2072		1649
2073	void	1650	void
2074	add (aio_req grp, ...)	1651	add (aio_req grp, ...)
2075	PPCODE:	1652	PPCODE:
2076	{	1653	{
2077	int i;	1654	int i;
2078	aio_req req;
2079
2080	if (main_sig && !block_sig_level)
2081	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2082		1655
2083	if (grp->int1 == 2)	1656	if (grp->int1 == 2)
2084	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1657	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2085		1658
2086	for (i = 1; i < items; ++i )	1659	for (i = 1; i < items; ++i )
2087	{	1660	{
		1661	aio_req req;
		1662
2088	if (GIMME_V != G_VOID)	1663	if (GIMME_V != G_VOID)
2089	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1664	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2090		1665
2091	req = SvAIO_REQ (ST (i));	1666	req = SvAIO_REQ (ST (i));
2092		1667
2093	if (req)	1668	if (req)
2094	{	1669	eio_grp_add (grp, req);
2095	++grp->size;
2096	req->grp = grp;
2097
2098	req->grp_prev = 0;
2099	req->grp_next = grp->grp_first;
2100
2101	if (grp->grp_first)
2102	grp->grp_first->grp_prev = req;
2103
2104	grp->grp_first = req;
2105	}
2106	}	1670	}
2107	}	1671	}
2108		1672
2109	void	1673	void
2110	cancel_subs (aio_req_ornot req)	1674	cancel_subs (aio_req_ornot req)
…		…
2119	AV *av;	1683	AV *av;
2120		1684
2121	grp->errorno = errno;	1685	grp->errorno = errno;
2122		1686
2123	av = newAV ();	1687	av = newAV ();
		1688	av_extend (av, items - 1);
2124		1689
2125	for (i = 1; i < items; ++i )	1690	for (i = 1; i < items; ++i )
2126	av_push (av, newSVsv (ST (i)));	1691	av_push (av, newSVsv (ST (i)));
2127		1692
2128	SvREFCNT_dec (grp->sv1);	1693	SvREFCNT_dec (grp->sv1);
…		…
2135	grp->errorno = errorno;	1700	grp->errorno = errorno;
2136		1701
2137	void	1702	void
2138	limit (aio_req grp, int limit)	1703	limit (aio_req grp, int limit)
2139	CODE:	1704	CODE:
2140	grp->int2 = limit;	1705	eio_grp_limit (grp, limit);
2141	aio_grp_feed (grp);
2142		1706
2143	void	1707	void
2144	feed (aio_req grp, SV *callback=&PL_sv_undef)	1708	feed (aio_req grp, SV *callback=&PL_sv_undef)
2145	CODE:	1709	CODE:
2146	{	1710	{
2147	SvREFCNT_dec (grp->sv2);	1711	SvREFCNT_dec (grp->sv2);
2148	grp->sv2 = newSVsv (callback);	1712	grp->sv2 = newSVsv (callback);
		1713	grp->feed = aio_grp_feed;
2149		1714
2150	if (grp->int2 <= 0)	1715	if (grp->int2 <= 0)
2151	grp->int2 = 2;	1716	grp->int2 = 2;
2152		1717
2153	aio_grp_feed (grp);	1718	eio_grp_limit (grp, grp->int2);
2154	}	1719	}
2155		1720

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