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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.92 by root, Wed Nov 8 01:59:59 2006 UTC vs.
Revision 1.148 by root, Wed Jun 17 01:14:48 2009 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"
18
19	#include <pthread.h>
20
21	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
22	#include <errno.h>	11	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	12	#include <sys/types.h>
26	#include <sys/stat.h>	13	#include <sys/stat.h>
27	#include <limits.h>	14	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	15	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	16	#include <sched.h>
32		17
33	#if HAVE_SENDFILE	18	/* perl namespace pollution */
34	# if __linux	19	#undef VERSION
35	# include <sys/sendfile.h>	20
36	# elif __freebsd	21	#ifdef _WIN32
37	# include <sys/socket.h>	22
38	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
39	# elif __hpux	24	# undef malloc
40	# include <sys/socket.h>	25	# undef free
41	# elif __solaris /* not yet */	26
42	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
43	# else	59	#else
44	# error sendfile support requested but not available	60
45	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
46	#endif	68	#endif
47		69
48	/* number of seconds after which idle threads exit */	70	/* perl stupidly overrides readdir and maybe others */
49	#define IDLE_TIMEOUT 10	71	/* with thread-unsafe versions, imagine that :( */
		72	#undef readdir
		73	#undef opendir
		74	#undef closedir
50		75
51	/* used for struct dirent, AIX doesn't provide it */	76	#define EIO_STRUCT_STAT Stat_t
52	#ifndef NAME_MAX	77
53	# define NAME_MAX 4096	78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define VAL64 IV
		81	# define SvVAL64 SvIV
		82	# define newSVval64 newSViv
		83	#else
		84	# define VAL64 NV
		85	# define SvVAL64 SvNV
		86	# define newSVval64 newSVnv
54	#endif	87	#endif
55		88
56	#ifndef PTHREAD_STACK_MIN	89	/*****************************************************************************/
57	/* care for broken platforms, e.g. windows */	90
58	# define PTHREAD_STACK_MIN 16384	91	#if __GNUC__ >= 3
		92	# define expect(expr,value) __builtin_expect ((expr),(value))
		93	#else
		94	# define expect(expr,value) (expr)
59	#endif	95	#endif
60		96
61	#if __ia64	97	#define expect_false(expr) expect ((expr) != 0, 0)
62	# define STACKSIZE 65536	98	#define expect_true(expr) expect ((expr) != 0, 1)
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64	# define STACKSIZE PTHREAD_STACK_MIN
65	#else
66	# define STACKSIZE 16384
67	#endif
68		99
69	/* wether word reads are potentially non-atomic.	100	/*****************************************************************************/
70	* this is conservatice, likely most arches this runs
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDACCESS_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDACCESS_UNSAFE 0
76	# else
77	# define WORDACCESS_UNSAFE 1
78	# endif
79	#endif
80		101
81	/* buffer size for various temporary buffers */	102	static HV *stash;
82	#define AIO_BUFSIZE 65536
83
84	#define dBUF \
85	char *aio_buf; \
86	LOCK (wrklock); \
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
88	UNLOCK (wrklock); \
89	if (!aio_buf) \
90	return -1;
91
92	typedef SV SV8; /* byte-sv, used for argument-checking */	103	typedef SV SV8; /* byte-sv, used for argument-checking */
93		104	typedef int aio_rfd; /* read file desriptor */
94	enum {	105	typedef int aio_wfd; /* write file descriptor */
95	REQ_QUIT,
96	REQ_OPEN, REQ_CLOSE,
97	REQ_READ, REQ_WRITE, REQ_READAHEAD,
98	REQ_SENDFILE,
99	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
100	REQ_FSYNC, REQ_FDATASYNC,
101	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
102	REQ_MKNOD, REQ_READDIR,
103	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
104	REQ_GROUP, REQ_NOP,
105	REQ_BUSY,
106	};
107		106
108	#define AIO_REQ_KLASS "IO::AIO::REQ"	107	#define AIO_REQ_KLASS "IO::AIO::REQ"
109	#define AIO_GRP_KLASS "IO::AIO::GRP"	108	#define AIO_GRP_KLASS "IO::AIO::GRP"
110		109
111	typedef struct aio_cb	110	#define EIO_REQ_MEMBERS \
112	{
113	struct aio_cb *volatile next;
114
115	SV *callback, *fh;	111	SV *callback; \
116	SV *sv1, *sv2;	112	SV *sv1, *sv2; \
117	void *ptr1, *ptr2;
118	off_t offs;
119	size_t size;
120	ssize_t result;
121
122	STRLEN stroffset;	113	STRLEN stroffset; \
123	int type;	114	SV *self;
124	int int1, int2;
125	int errorno;
126	mode_t mode; /* open */
127		115
128	unsigned char flags;	116	#define EIO_NO_WRAPPERS 1
129	unsigned char pri;
130		117
131	SV *self; /* the perl counterpart of this request, if any */	118	#include "libeio/eio.h"
132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	119
133	} aio_cb;	120	#ifndef POSIX_FADV_NORMAL
		121	# define POSIX_FADV_NORMAL 0
		122	#endif
		123
		124	#ifndef POSIX_FADV_SEQUENTIAL
		125	# define POSIX_FADV_SEQUENTIAL 0
		126	#endif
		127
		128	#ifndef POSIX_FADV_RANDOM
		129	# define POSIX_FADV_RANDOM 0
		130	#endif
		131
		132	#ifndef POSIX_FADV_NOREUSE
		133	# define POSIX_FADV_NOREUSE 0
		134	#endif
		135
		136	#ifndef POSIX_FADV_WILLNEED
		137	# define POSIX_FADV_WILLNEED 0
		138	#endif
		139
		140	#ifndef POSIX_FADV_DONTNEED
		141	# define POSIX_FADV_DONTNEED 0
		142	#endif
		143
		144	static int req_invoke (eio_req *req);
		145	#define EIO_FINISH(req) req_invoke (req)
		146	static void req_destroy (eio_req *grp);
		147	#define EIO_DESTROY(req) req_destroy (req)
134		148
135	enum {	149	enum {
136	FLAG_CANCELLED = 0x01, /* request was cancelled */
137	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */	150	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
138	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
139	};	151	};
140		152
		153	#include "libeio/eio.c"
		154
141	typedef aio_cb *aio_req;	155	typedef eio_req *aio_req;
142	typedef aio_cb *aio_req_ornot;	156	typedef eio_req *aio_req_ornot;
143		157
144	enum {	158	static SV *on_next_submit;
145	PRI_MIN = -4,	159	static int next_pri = EIO_PRI_DEFAULT;
146	PRI_MAX = 4,	160	static int max_outstanding;
147		161
148	DEFAULT_PRI = 0,	162	static int respipe_osf [2], respipe [2] = { -1, -1 };
149	PRI_BIAS = -PRI_MIN,
150	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
151	};
152		163
153	#define AIO_TICKS ((1000000 + 1023) >> 10)
154
155	static unsigned int max_poll_time = 0;
156	static unsigned int max_poll_reqs = 0;
157
158	/* calculcate time difference in ~1/AIO_TICKS of a second */
159	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
160	{
161	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
162	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
163	}
164
165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
167	static unsigned int started, idle, wanted;
168
169	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
170	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
171	#else
172	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
173	#endif
174
175	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
176	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
177
178	/* worker threads management */
179	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
180
181	typedef struct worker {
182	/* locked by wrklock */
183	struct worker *prev, *next;
184
185	pthread_t tid;
186
187	/* locked by reslock, reqlock or wrklock */
188	aio_req req; /* currently processed request */
189	void *dbuf;
190	DIR *dirp;
191	} worker;
192
193	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
194
195	static void worker_clear (worker *wrk)
196	{
197	if (wrk->dirp)
198	{
199	closedir (wrk->dirp);
200	wrk->dirp = 0;
201	}
202
203	if (wrk->dbuf)
204	{
205	free (wrk->dbuf);
206	wrk->dbuf = 0;
207	}
208	}
209
210	static void worker_free (worker *wrk)
211	{
212	wrk->next->prev = wrk->prev;
213	wrk->prev->next = wrk->next;
214
215	free (wrk);
216	}
217
218	static volatile unsigned int nreqs, nready, npending;
219	static volatile unsigned int max_idle = 4;
220	static volatile unsigned int max_outstanding = 0xffffffff;
221	static int respipe [2];
222
223	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
224	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
225	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
226
227	#if WORDACCESS_UNSAFE
228
229	static unsigned int get_nready ()
230	{
231	unsigned int retval;
232
233	LOCK (reqlock);
234	retval = nready;
235	UNLOCK (reqlock);
236
237	return retval;
238	}
239
240	static unsigned int get_npending ()
241	{
242	unsigned int retval;
243
244	LOCK (reslock);
245	retval = npending;
246	UNLOCK (reslock);
247
248	return retval;
249	}
250
251	static unsigned int get_nthreads ()
252	{
253	unsigned int retval;
254
255	LOCK (wrklock);
256	retval = started;
257	UNLOCK (wrklock);
258
259	return retval;
260	}
261
262	#else
263
264	# define get_nready() nready
265	# define get_npending() npending
266	# define get_nthreads() started
267
268	#endif
269
270	/*
271	* a somewhat faster data structure might be nice, but
272	* with 8 priorities this actually needs <20 insns
273	* per shift, the most expensive operation.
274	*/
275	typedef struct {
276	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
277	int size;
278	} reqq;
279
280	static reqq req_queue;
281	static reqq res_queue;
282
283	int reqq_push (reqq *q, aio_req req)
284	{
285	int pri = req->pri;
286	req->next = 0;
287
288	if (q->qe[pri])
289	{
290	q->qe[pri]->next = req;
291	q->qe[pri] = req;
292	}
293	else
294	q->qe[pri] = q->qs[pri] = req;
295
296	return q->size++;
297	}
298
299	aio_req reqq_shift (reqq *q)
300	{
301	int pri;
302
303	if (!q->size)
304	return 0;
305
306	--q->size;
307
308	for (pri = NUM_PRI; pri--; )
309	{
310	aio_req req = q->qs[pri];
311
312	if (req)
313	{
314	if (!(q->qs[pri] = req->next))
315	q->qe[pri] = 0;
316
317	return req;
318	}
319	}
320
321	abort ();
322	}
323
324	static int poll_cb ();
325	static void req_invoke (aio_req req);
326	static void req_free (aio_req req);	164	static void req_destroy (aio_req req);
327	static void req_cancel (aio_req req);	165	static void req_cancel (aio_req req);
		166
		167	static void want_poll (void)
		168	{
		169	/* write a dummy byte to the pipe so fh becomes ready */
		170	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		171	}
		172
		173	static void done_poll (void)
		174	{
		175	/* read any signals sent by the worker threads */
		176	char buf [4];
		177	while (respipe_read (respipe [0], buf, 4) == 4)
		178	;
		179	}
328		180
329	/* must be called at most once */	181	/* must be called at most once */
330	static SV *req_sv (aio_req req, const char *klass)	182	static SV *req_sv (aio_req req, const char *klass)
331	{	183	{
332	if (!req->self)	184	if (!req->self)
…		…
350	return mg ? (aio_req)mg->mg_ptr : 0;	202	return mg ? (aio_req)mg->mg_ptr : 0;
351	}	203	}
352		204
353	static void aio_grp_feed (aio_req grp)	205	static void aio_grp_feed (aio_req grp)
354	{	206	{
355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	207	if (grp->sv2 && SvOK (grp->sv2))
356	{	208	{
357	int old_len = grp->size;
358
359	if (grp->sv2 && SvOK (grp->sv2))
360	{
361	dSP;	209	dSP;
362		210
363	ENTER;	211	ENTER;
364	SAVETMPS;	212	SAVETMPS;
365	PUSHMARK (SP);	213	PUSHMARK (SP);
366	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	214	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
367	PUTBACK;	215	PUTBACK;
368	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	216	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
369	SPAGAIN;	217	SPAGAIN;
370	FREETMPS;	218	FREETMPS;
371	LEAVE;	219	LEAVE;
372	}
373
374	/* stop if no progress has been made */
375	if (old_len == grp->size)
376	{
377	SvREFCNT_dec (grp->sv2);
378	grp->sv2 = 0;
379	break;
380	}
381	}	220	}
382	}	221	}
383		222
384	static void aio_grp_dec (aio_req grp)	223	static void req_submit (eio_req *req)
385	{	224	{
386	--grp->size;	225	eio_submit (req);
387		226
388	/* call feeder, if applicable */	227	if (expect_false (on_next_submit))
389	aio_grp_feed (grp);
390
391	/* finish, if done */
392	if (!grp->size && grp->int1)
393	{	228	{
394	req_invoke (grp);	229	dSP;
395	req_free (grp);	230	SV *cb = sv_2mortal (on_next_submit);
		231
		232	on_next_submit = 0;
		233
		234	PUSHMARK (SP);
		235	PUTBACK;
		236	call_sv (cb, G_DISCARD | G_EVAL);
396	}	237	}
397	}	238	}
398		239
399	static void req_invoke (aio_req req)	240	static int req_invoke (eio_req *req)
400	{	241	{
401	dSP;	242	dSP;
402		243
403	if (req->flags & FLAG_SV1_RO_OFF)	244	if (req->flags & FLAG_SV2_RO_OFF)
404	SvREADONLY_off (req->sv1);	245	SvREADONLY_off (req->sv2);
405		246
406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	247	if (!EIO_CANCELLED (req) && req->callback)
407	{	248	{
408	ENTER;	249	ENTER;
409	SAVETMPS;	250	SAVETMPS;
410	PUSHMARK (SP);	251	PUSHMARK (SP);
411	EXTEND (SP, 1);	252	EXTEND (SP, 1);
412		253
413	switch (req->type)	254	switch (req->type)
414	{	255	{
415	case REQ_READDIR:	256	case EIO_READDIR:
416	{	257	{
417	SV *rv = &PL_sv_undef;	258	SV *rv = &PL_sv_undef;
418		259
419	if (req->result >= 0)	260	if (req->result >= 0)
420	{	261	{
421	int i;	262	int i;
422	char *buf = req->ptr2;	263	char *names = (char *)req->ptr2;
		264	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
423	AV *av = newAV ();	265	AV *av = newAV ();
424		266
425	av_extend (av, req->result - 1);	267	av_extend (av, req->result - 1);
426		268
427	for (i = 0; i < req->result; ++i)	269	for (i = 0; i < req->result; ++i)
428	{	270	{
429	SV *sv = newSVpv (buf, 0);	271	if (req->int1 & EIO_READDIR_DENTS)
		272	{
		273	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
430		274
		275	if (req->int1 & EIO_READDIR_CUSTOM2)
		276	{
		277	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		278	AV *avent = newAV ();
		279
		280	av_extend (avent, 2);
		281
		282	if (!sv_type [ent->type])
		283	{
		284	sv_type [ent->type] = newSViv (ent->type);
		285	SvREADONLY_on (sv_type [ent->type]);
		286	}
		287
		288	av_store (avent, 0, namesv);
		289	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		290	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		291
		292	av_store (av, i, newRV_noinc ((SV *)avent));
		293	}
		294	else
431	av_store (av, i, sv);	295	av_store (av, i, namesv);
		296
		297	++ent;
		298	}
		299	else
		300	{
		301	SV *name = newSVpv (names, 0);
		302	av_store (av, i, name);
432	buf += SvCUR (sv) + 1;	303	names += SvCUR (name) + 1;
		304	}
433	}	305	}
434		306
435	rv = sv_2mortal (newRV_noinc ((SV *)av));	307	rv = sv_2mortal (newRV_noinc ((SV *)av));
436	}	308	}
437		309
438	PUSHs (rv);	310	PUSHs (rv);
		311
		312	if (req->int1 & EIO_READDIR_CUSTOM1)
		313	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
439	}	314	}
440	break;	315	break;
441		316
442	case REQ_OPEN:	317	case EIO_OPEN:
443	{	318	{
444	/* convert fd to fh */	319	/* convert fd to fh */
445	SV *fh;	320	SV *fh = &PL_sv_undef;
446		321
447	PUSHs (sv_2mortal (newSViv (req->result)));	322	if (req->result >= 0)
448	PUTBACK;	323	{
449	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	324	GV *gv = (GV *)sv_newmortal ();
450	SPAGAIN;	325	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		326	char sym [64];
		327	int symlen;
		328
		329	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		330	gv_init (gv, stash, sym, symlen, 0);
451		331
452	fh = SvREFCNT_inc (POPs);	332	symlen = snprintf (
		333	sym,
		334	sizeof (sym),
		335	"%s&=%d",
		336	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		337	(int)req->result
		338	);
453		339
		340	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		341	fh = (SV *)gv;
		342	}
		343
454	PUSHMARK (SP);	344	PUSHs (fh);
455	XPUSHs (sv_2mortal (fh));
456	}	345	}
457	break;	346	break;
458		347
459	case REQ_GROUP:	348	case EIO_GROUP:
460	req->int1 = 2; /* mark group as finished */	349	req->int1 = 2; /* mark group as finished */
461		350
462	if (req->sv1)	351	if (req->sv1)
463	{	352	{
464	int i;	353	int i;
…		…
468	for (i = 0; i <= AvFILL (av); ++i)	357	for (i = 0; i <= AvFILL (av); ++i)
469	PUSHs (*av_fetch (av, i, 0));	358	PUSHs (*av_fetch (av, i, 0));
470	}	359	}
471	break;	360	break;
472		361
473	case REQ_NOP:	362	case EIO_NOP:
474	case REQ_BUSY:	363	case EIO_BUSY:
475	break;	364	break;
476		365
477	case REQ_READLINK:	366	case EIO_READLINK:
478	if (req->result > 0)	367	if (req->result > 0)
479	{	368	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
480	SvCUR_set (req->sv1, req->result);
481	*SvEND (req->sv1) = 0;
482	PUSHs (req->sv1);
483	}
484	break;	369	break;
485		370
486	case REQ_STAT:	371	case EIO_STAT:
487	case REQ_LSTAT:	372	case EIO_LSTAT:
488	case REQ_FSTAT:	373	case EIO_FSTAT:
489	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	374	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
490	PL_laststatval = req->result;	375	PL_laststatval = req->result;
491	PL_statcache = *(Stat_t *)(req->ptr2);	376	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
492	PUSHs (sv_2mortal (newSViv (req->result)));	377	PUSHs (sv_2mortal (newSViv (req->result)));
493	break;	378	break;
494		379
495	case REQ_READ:	380	case EIO_READ:
		381	{
496	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	382	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
497	*SvEND (req->sv1) = 0;	383	*SvEND (req->sv2) = 0;
		384	SvPOK_only (req->sv2);
		385	SvSETMAGIC (req->sv2);
498	PUSHs (sv_2mortal (newSViv (req->result)));	386	PUSHs (sv_2mortal (newSViv (req->result)));
		387	}
499	break;	388	break;
		389
		390	case EIO_DUP2:
		391	if (req->result > 0)
		392	req->result = 0;
		393	/* FALLTHROUGH */
500		394
501	default:	395	default:
502	PUSHs (sv_2mortal (newSViv (req->result)));	396	PUSHs (sv_2mortal (newSViv (req->result)));
503	break;	397	break;
504	}	398	}
505		399
506	errno = req->errorno;	400	errno = req->errorno;
507		401
508	PUTBACK;	402	PUTBACK;
509	call_sv (req->callback, G_VOID | G_EVAL);	403	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
510	SPAGAIN;	404	SPAGAIN;
511		405
512	FREETMPS;	406	FREETMPS;
513	LEAVE;	407	LEAVE;
		408
		409	PUTBACK;
514	}	410	}
515		411
516	if (req->grp)	412	return !!SvTRUE (ERRSV);
517	{
518	aio_req grp = req->grp;
519
520	/* unlink request */
521	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
522	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
523
524	if (grp->grp_first == req)
525	grp->grp_first = req->grp_next;
526
527	aio_grp_dec (grp);
528	}
529
530	if (SvTRUE (ERRSV))
531	{
532	req_free (req);
533	croak (0);
534	}
535	}	413	}
536		414
537	static void req_free (aio_req req)	415	static void req_destroy (aio_req req)
538	{	416	{
539	if (req->self)	417	if (req->self)
540	{	418	{
541	sv_unmagic (req->self, PERL_MAGIC_ext);	419	sv_unmagic (req->self, PERL_MAGIC_ext);
542	SvREFCNT_dec (req->self);	420	SvREFCNT_dec (req->self);
543	}	421	}
544		422
545	SvREFCNT_dec (req->fh);
546	SvREFCNT_dec (req->sv1);	423	SvREFCNT_dec (req->sv1);
547	SvREFCNT_dec (req->sv2);	424	SvREFCNT_dec (req->sv2);
548	SvREFCNT_dec (req->callback);	425	SvREFCNT_dec (req->callback);
549		426
550	if (req->flags & FLAG_PTR2_FREE)
551	free (req->ptr2);
552
553	Safefree (req);	427	Safefree (req);
554	}	428	}
555		429
556	static void req_cancel_subs (aio_req grp)	430	static void req_cancel_subs (aio_req grp)
557	{	431	{
558	aio_req sub;	432	aio_req sub;
559		433
560	if (grp->type != REQ_GROUP)	434	if (grp->type != EIO_GROUP)
561	return;	435	return;
562		436
563	SvREFCNT_dec (grp->sv2);	437	SvREFCNT_dec (grp->sv2);
564	grp->sv2 = 0;	438	grp->sv2 = 0;
565		439
566	for (sub = grp->grp_first; sub; sub = sub->grp_next)	440	eio_grp_cancel (grp);
567	req_cancel (sub);
568	}	441	}
569		442
570	static void req_cancel (aio_req req)	443	#ifdef USE_SOCKETS_AS_HANDLES
571	{	444	# define TO_SOCKET(x) (win32_get_osfhandle (x))
572	req->flags |= FLAG_CANCELLED;	445	#else
573		446	# define TO_SOCKET(x) (x)
574	req_cancel_subs (req);
575	}
576
577	static void *aio_proc(void *arg);
578
579	static void start_thread (void)
580	{
581	sigset_t fullsigset, oldsigset;
582	pthread_attr_t attr;
583
584	worker *wrk = calloc (1, sizeof (worker));
585
586	if (!wrk)
587	croak ("unable to allocate worker thread data");
588
589	pthread_attr_init (&attr);
590	pthread_attr_setstacksize (&attr, STACKSIZE);
591	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
592	#ifdef PTHREAD_SCOPE_PROCESS
593	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
594	#endif	447	#endif
595		448
596	sigfillset (&fullsigset);	449	static void
		450	create_respipe (void)
		451	{
		452	int old_readfd = respipe [0];
597		453
598	LOCK (wrklock);	454	if (respipe [1] >= 0)
599	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	455	respipe_close (TO_SOCKET (respipe [1]));
600		456
601	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	457	#ifdef _WIN32
		458	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		459	#else
		460	if (pipe (respipe))
		461	#endif
		462	croak ("unable to initialize result pipe");
		463
		464	if (old_readfd >= 0)
602	{	465	{
603	wrk->prev = &wrk_first;	466	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
604	wrk->next = wrk_first.next;	467	croak ("unable to initialize result pipe(2)");
605	wrk_first.next->prev = wrk;	468
606	wrk_first.next = wrk;	469	respipe_close (respipe [0]);
607	++started;	470	respipe [0] = old_readfd;
608	}	471	}
609	else
610	free (wrk);
611		472
612	sigprocmask (SIG_SETMASK, &oldsigset, 0);	473	#ifdef _WIN32
613	UNLOCK (wrklock);	474	int arg = 1;
614	}	475	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		476	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		477	#else
		478	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		479	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		480	#endif
		481	croak ("unable to initialize result pipe(3)");
615		482
616	static void maybe_start_thread ()	483	respipe_osf [0] = TO_SOCKET (respipe [0]);
617	{	484	respipe_osf [1] = TO_SOCKET (respipe [1]);
618	if (get_nthreads () >= wanted)
619	return;
620
621	/* todo: maybe use idle here, but might be less exact */
622	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
623	return;
624
625	start_thread ();
626	}	485	}
627		486
628	static void req_send (aio_req req)
629	{
630	++nreqs;
631
632	LOCK (reqlock);
633	++nready;
634	reqq_push (&req_queue, req);
635	pthread_cond_signal (&reqwait);
636	UNLOCK (reqlock);
637
638	maybe_start_thread ();
639	}
640
641	static void end_thread (void)
642	{
643	aio_req req;
644
645	Newz (0, req, 1, aio_cb);
646
647	req->type = REQ_QUIT;
648	req->pri = PRI_MAX + PRI_BIAS;
649
650	LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	pthread_cond_signal (&reqwait);
653	UNLOCK (reqlock);
654
655	LOCK (wrklock);
656	--started;
657	UNLOCK (wrklock);
658	}
659
660	static void set_max_idle (int nthreads)
661	{
662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
663	max_idle = nthreads <= 0 ? 1 : nthreads;
664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665	}
666
667	static void min_parallel (int nthreads)
668	{
669	if (wanted < nthreads)
670	wanted = nthreads;
671	}
672
673	static void max_parallel (int nthreads)
674	{
675	if (wanted > nthreads)
676	wanted = nthreads;
677
678	while (started > wanted)
679	end_thread ();
680	}
681
682	static void poll_wait ()	487	static void poll_wait (void)
683	{	488	{
684	fd_set rfd;	489	fd_set rfd;
685		490
686	while (nreqs)	491	while (eio_nreqs ())
687	{	492	{
688	int size;	493	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	494
		495	X_LOCK (reslock);
690	size = res_queue.size;	496	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	497	X_UNLOCK (reslock);
692		498
693	if (size)	499	if (size)
694	return;	500	return;
695		501
696	maybe_start_thread ();	502	etp_maybe_start_thread ();
697		503
698	FD_ZERO(&rfd);	504	FD_ZERO (&rfd);
699	FD_SET(respipe [0], &rfd);	505	FD_SET (respipe [0], &rfd);
700		506
701	select (respipe [0] + 1, &rfd, 0, 0, 0);	507	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	508	}
703	}	509	}
704		510
705	static int poll_cb ()	511	static int poll_cb (void)
706	{	512	{
707	dSP;
708	int count = 0;
709	int maxreqs = max_poll_reqs;
710	int do_croak = 0;
711	struct timeval tv_start, tv_now;
712	aio_req req;
713
714	if (max_poll_time)
715	gettimeofday (&tv_start, 0);
716
717	for (;;)	513	for (;;)
718	{	514	{
719	for (;;)	515	int res = eio_poll ();
720	{
721	maybe_start_thread ();
722		516
723	LOCK (reslock);	517	if (res > 0)
724	req = reqq_shift (&res_queue);
725
726	if (req)
727	{
728	--npending;
729
730	if (!res_queue.size)
731	{
732	/* read any signals sent by the worker threads */
733	char buf [32];
734	while (read (respipe [0], buf, 32) == 32)
735	;
736	}
737	}
738
739	UNLOCK (reslock);
740
741	if (!req)
742	break;
743
744	--nreqs;
745
746	if (req->type == REQ_GROUP && req->size)
747	{
748	req->int1 = 1; /* mark request as delayed */
749	continue;
750	}
751	else
752	{
753	req_invoke (req);
754
755	count++;
756	}
757
758	req_free (req);
759
760	if (maxreqs && !--maxreqs)
761	break;
762
763	if (max_poll_time)
764	{
765	gettimeofday (&tv_now, 0);
766
767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
768	break;
769	}
770	}
771
772	if (nreqs <= max_outstanding)
773	break;	518	croak (0);
		519
		520	if (!max_outstanding || max_outstanding > eio_nreqs ())
		521	return res;
774		522
775	poll_wait ();	523	poll_wait ();
776
777	++maxreqs;
778	}	524	}
779
780	return count;
781	}	525	}
782		526
783	static void create_pipe ()	527	static void atfork_child (void)
784	{	528	{
785	if (pipe (respipe))	529	create_respipe ();
786	croak ("unable to initialize result pipe");
787
788	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
789	croak ("cannot set result pipe to nonblocking mode");
790
791	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
792	croak ("cannot set result pipe to nonblocking mode");
793	}	530	}
794		531
795	/*****************************************************************************/	532	static SV *
796	/* work around various missing functions */	533	get_cb (SV *cb_sv)
797
798	#if !HAVE_PREADWRITE
799	# define pread aio_pread
800	# define pwrite aio_pwrite
801
802	/*
803	* make our pread/pwrite safe against themselves, but not against
804	* normal read/write by using a mutex. slows down execution a lot,
805	* but that's your problem, not mine.
806	*/
807	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
808
809	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
810	{	534	{
811	ssize_t res;	535	HV *st;
812	off_t ooffset;	536	GV *gvp;
		537	CV *cv;
813		538
814	LOCK (preadwritelock);	539	if (!SvOK (cb_sv))
815	ooffset = lseek (fd, 0, SEEK_CUR);
816	lseek (fd, offset, SEEK_SET);
817	res = read (fd, buf, count);
818	lseek (fd, ooffset, SEEK_SET);
819	UNLOCK (preadwritelock);
820
821	return res;
822	}
823
824	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
825	{
826	ssize_t res;
827	off_t ooffset;
828
829	LOCK (preadwritelock);
830	ooffset = lseek (fd, 0, SEEK_CUR);
831	lseek (fd, offset, SEEK_SET);
832	res = write (fd, buf, count);
833	lseek (fd, offset, SEEK_SET);
834	UNLOCK (preadwritelock);
835
836	return res;
837	}
838	#endif
839
840	#if !HAVE_FDATASYNC
841	# define fdatasync fsync
842	#endif
843
844	#if !HAVE_READAHEAD
845	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
846
847	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
848	{
849	dBUF;
850
851	while (count > 0)
852	{
853	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
854
855	pread (fd, aio_buf, len, offset);
856	offset += len;
857	count -= len;
858	}
859
860	errno = 0;
861	}
862
863	#endif
864
865	#if !HAVE_READDIR_R
866	# define readdir_r aio_readdir_r
867
868	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
869
870	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
871	{
872	struct dirent *e;
873	int errorno;
874
875	LOCK (readdirlock);
876
877	e = readdir (dirp);
878	errorno = errno;
879
880	if (e)
881	{
882	*res = ent;
883	strcpy (ent->d_name, e->d_name);
884	}
885	else
886	*res = 0;
887
888	UNLOCK (readdirlock);
889
890	errno = errorno;
891	return e ? 0 : -1;
892	}
893	#endif
894
895	/* sendfile always needs emulation */
896	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
897	{
898	ssize_t res;
899
900	if (!count)
901	return 0;	540	return 0;
902		541
903	#if HAVE_SENDFILE	542	cv = sv_2cv (cb_sv, &st, &gvp, 0);
904	# if __linux
905	res = sendfile (ofd, ifd, &offset, count);
906		543
907	# elif __freebsd	544	if (!cv)
908	/*	545	croak ("IO::AIO callback must be undef or a CODE reference");
909	* Of course, the freebsd sendfile is a dire hack with no thoughts
910	* wasted on making it similar to other I/O functions.
911	*/
912	{
913	off_t sbytes;
914	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
915		546
916	if (res < 0 && sbytes)	547	return (SV *)cv;
917	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
918	res = sbytes;
919	}
920
921	# elif __hpux
922	res = sendfile (ofd, ifd, offset, count, 0, 0);
923
924	# elif __solaris
925	{
926	struct sendfilevec vec;
927	size_t sbytes;
928
929	vec.sfv_fd = ifd;
930	vec.sfv_flag = 0;
931	vec.sfv_off = offset;
932	vec.sfv_len = count;
933
934	res = sendfilev (ofd, &vec, 1, &sbytes);
935
936	if (res < 0 && sbytes)
937	res = sbytes;
938	}
939
940	# endif
941	#else
942	res = -1;
943	errno = ENOSYS;
944	#endif
945
946	if (res < 0
947	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
948	#if __solaris
949	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
950	#endif
951	)
952	)
953	{
954	/* emulate sendfile. this is a major pain in the ass */
955	dBUF;
956
957	res = 0;
958
959	while (count)
960	{
961	ssize_t cnt;
962
963	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
964
965	if (cnt <= 0)
966	{
967	if (cnt && !res) res = -1;
968	break;
969	}
970
971	cnt = write (ofd, aio_buf, cnt);
972
973	if (cnt <= 0)
974	{
975	if (cnt && !res) res = -1;
976	break;
977	}
978
979	offset += cnt;
980	res += cnt;
981	count -= cnt;
982	}
983	}
984
985	return res;
986	}
987
988	/* read a full directory */
989	static void scandir_ (aio_req req, worker *self)
990	{
991	DIR *dirp;
992	union
993	{
994	struct dirent d;
995	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
996	} *u;
997	struct dirent *entp;
998	char *name, *names;
999	int memlen = 4096;
1000	int memofs = 0;
1001	int res = 0;
1002	int errorno;
1003
1004	LOCK (wrklock);
1005	self->dirp = dirp = opendir (req->ptr1);
1006	self->dbuf = u = malloc (sizeof (*u));
1007	req->flags |= FLAG_PTR2_FREE;
1008	req->ptr2 = names = malloc (memlen);
1009	UNLOCK (wrklock);
1010
1011	if (dirp && u && names)
1012	for (;;)
1013	{
1014	errno = 0;
1015	readdir_r (dirp, &u->d, &entp);
1016
1017	if (!entp)
1018	break;
1019
1020	name = entp->d_name;
1021
1022	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1023	{
1024	int len = strlen (name) + 1;
1025
1026	res++;
1027
1028	while (memofs + len > memlen)
1029	{
1030	memlen *= 2;
1031	LOCK (wrklock);
1032	req->ptr2 = names = realloc (names, memlen);
1033	UNLOCK (wrklock);
1034
1035	if (!names)
1036	break;
1037	}
1038
1039	memcpy (names + memofs, name, len);
1040	memofs += len;
1041	}
1042	}
1043
1044	if (errno)
1045	res = -1;
1046
1047	req->result = res;
1048	}
1049
1050	/*****************************************************************************/
1051
1052	static void *aio_proc (void *thr_arg)
1053	{
1054	aio_req req;
1055	struct timespec ts;
1056	worker *self = (worker *)thr_arg;
1057
1058	/* try to distribute timeouts somewhat evenly */
1059	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1060	* (1000000000UL / 1024UL);
1061
1062	for (;;)
1063	{
1064	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1065
1066	LOCK (reqlock);
1067
1068	for (;;)
1069	{
1070	self->req = req = reqq_shift (&req_queue);
1071
1072	if (req)
1073	break;
1074
1075	++idle;
1076
1077	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1078	== ETIMEDOUT)
1079	{
1080	if (idle > max_idle)
1081	{
1082	--idle;
1083	UNLOCK (reqlock);
1084	LOCK (wrklock);
1085	--started;
1086	UNLOCK (wrklock);
1087	goto quit;
1088	}
1089
1090	/* we are allowed to idle, so do so without any timeout */
1091	pthread_cond_wait (&reqwait, &reqlock);
1092	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1093	}
1094
1095	--idle;
1096	}
1097
1098	--nready;
1099
1100	UNLOCK (reqlock);
1101
1102	errno = 0; /* strictly unnecessary */
1103
1104	if (!(req->flags & FLAG_CANCELLED))
1105	switch (req->type)
1106	{
1107	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1108	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1109
1110	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1111	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1112
1113	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1114	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1115	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1116
1117	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1118	case REQ_CLOSE: req->result = close (req->int1); break;
1119	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1120	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1121	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1122	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1123	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1124	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1125	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1126
1127	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1128	case REQ_FSYNC: req->result = fsync (req->int1); break;
1129	case REQ_READDIR: scandir_ (req, self); break;
1130
1131	case REQ_BUSY:
1132	{
1133	struct timeval tv;
1134
1135	tv.tv_sec = req->int1;
1136	tv.tv_usec = req->int2;
1137
1138	req->result = select (0, 0, 0, 0, &tv);
1139	}
1140
1141	case REQ_GROUP:
1142	case REQ_NOP:
1143	break;
1144
1145	case REQ_QUIT:
1146	goto quit;
1147
1148	default:
1149	req->result = ENOSYS;
1150	break;
1151	}
1152
1153	req->errorno = errno;
1154
1155	LOCK (reslock);
1156
1157	++npending;
1158
1159	if (!reqq_push (&res_queue, req))
1160	/* write a dummy byte to the pipe so fh becomes ready */
1161	write (respipe [1], &respipe, 1);
1162
1163	self->req = 0;
1164	worker_clear (self);
1165
1166	UNLOCK (reslock);
1167	}
1168
1169	quit:
1170	LOCK (wrklock);
1171	worker_free (self);
1172	UNLOCK (wrklock);
1173
1174	return 0;
1175	}
1176
1177	/*****************************************************************************/
1178
1179	static void atfork_prepare (void)
1180	{
1181	LOCK (wrklock);
1182	LOCK (reqlock);
1183	LOCK (reslock);
1184	#if !HAVE_PREADWRITE
1185	LOCK (preadwritelock);
1186	#endif
1187	#if !HAVE_READDIR_R
1188	LOCK (readdirlock);
1189	#endif
1190	}
1191
1192	static void atfork_parent (void)
1193	{
1194	#if !HAVE_READDIR_R
1195	UNLOCK (readdirlock);
1196	#endif
1197	#if !HAVE_PREADWRITE
1198	UNLOCK (preadwritelock);
1199	#endif
1200	UNLOCK (reslock);
1201	UNLOCK (reqlock);
1202	UNLOCK (wrklock);
1203	}
1204
1205	static void atfork_child (void)
1206	{
1207	aio_req prv;
1208
1209	while (prv = reqq_shift (&req_queue))
1210	req_free (prv);
1211
1212	while (prv = reqq_shift (&res_queue))
1213	req_free (prv);
1214
1215	while (wrk_first.next != &wrk_first)
1216	{
1217	worker *wrk = wrk_first.next;
1218
1219	if (wrk->req)
1220	req_free (wrk->req);
1221
1222	worker_clear (wrk);
1223	worker_free (wrk);
1224	}
1225
1226	started = 0;
1227	idle = 0;
1228	nreqs = 0;
1229	nready = 0;
1230	npending = 0;
1231
1232	close (respipe [0]);
1233	close (respipe [1]);
1234	create_pipe ();
1235
1236	atfork_parent ();
1237	}	548	}
1238		549
1239	#define dREQ \	550	#define dREQ \
		551	SV *cb_cv; \
1240	aio_req req; \	552	aio_req req; \
1241	int req_pri = next_pri; \	553	int req_pri = next_pri; \
1242	next_pri = DEFAULT_PRI + PRI_BIAS; \	554	next_pri = EIO_PRI_DEFAULT; \
1243	\	555	\
1244	if (SvOK (callback) && !SvROK (callback)) \	556	cb_cv = get_cb (callback); \
1245	croak ("callback must be undef or of reference type"); \
1246	\	557	\
1247	Newz (0, req, 1, aio_cb); \	558	Newz (0, req, 1, eio_req); \
1248	if (!req) \	559	if (!req) \
1249	croak ("out of memory during aio_req allocation"); \	560	croak ("out of memory during eio_req allocation"); \
1250	\	561	\
1251	req->callback = newSVsv (callback); \	562	req->callback = SvREFCNT_inc (cb_cv); \
1252	req->pri = req_pri	563	req->pri = req_pri
1253		564
1254	#define REQ_SEND \	565	#define REQ_SEND \
		566	PUTBACK; \
1255	req_send (req); \	567	req_submit (req); \
		568	SPAGAIN; \
1256	\	569	\
1257	if (GIMME_V != G_VOID) \	570	if (GIMME_V != G_VOID) \
1258	XPUSHs (req_sv (req, AIO_REQ_KLASS));	571	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1259		572
		573	static int
		574	extract_fd (SV *fh, int wr)
		575	{
		576	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		577
		578	if (fd < 0)
		579	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		580
		581	return fd;
		582	}
		583
1260	MODULE = IO::AIO PACKAGE = IO::AIO	584	MODULE = IO::AIO PACKAGE = IO::AIO
1261		585
1262	PROTOTYPES: ENABLE	586	PROTOTYPES: ENABLE
1263		587
1264	BOOT:	588	BOOT:
1265	{	589	{
		590	static const struct {
		591	const char *name;
		592	IV iv;
		593	} *civ, const_iv[] = {
		594	# define const_iv(name, value) { # name, (IV) value },
		595	# define const_eio(name) { # name, (IV) EIO_ ## name },
		596	const_iv (EXDEV , EXDEV)
		597	const_iv (ENOSYS , ENOSYS)
		598	const_iv (O_RDONLY, O_RDONLY)
		599	const_iv (O_WRONLY, O_WRONLY)
		600	const_iv (O_CREAT , O_CREAT)
		601	const_iv (O_TRUNC , O_TRUNC)
		602	#ifndef _WIN32
		603	const_iv (S_IFIFO , S_IFIFO)
		604	#endif
		605	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		606	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		607	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		608	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		609	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		610	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		611
		612	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		613	const_eio (SYNC_FILE_RANGE_WRITE)
		614	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		615
		616	const_eio (READDIR_DENTS)
		617	const_eio (READDIR_DIRS_FIRST)
		618	const_eio (READDIR_STAT_ORDER)
		619	const_eio (READDIR_FOUND_UNKNOWN)
		620
		621	const_eio (DT_UNKNOWN)
		622	const_eio (DT_FIFO)
		623	const_eio (DT_CHR)
		624	const_eio (DT_DIR)
		625	const_eio (DT_BLK)
		626	const_eio (DT_REG)
		627	const_eio (DT_LNK)
		628	const_eio (DT_SOCK)
		629	const_eio (DT_WHT)
		630	};
		631
1266	HV *stash = gv_stashpv ("IO::AIO", 1);	632	stash = gv_stashpv ("IO::AIO", 1);
1267		633
1268	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	634	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1269	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	635	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
1270	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1271	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1272	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1273	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1274		636
1275	create_pipe ();	637	create_respipe ();
1276	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	638
		639	if (eio_init (want_poll, done_poll) < 0)
		640	croak ("IO::AIO: unable to initialise eio library");
		641
		642	/* atfork child called in fifo order, so before eio's handler */
		643	X_THREAD_ATFORK (0, 0, atfork_child);
1277	}	644	}
1278		645
1279	void	646	void
1280	max_poll_reqs (int nreqs)	647	max_poll_reqs (int nreqs)
1281	PROTOTYPE: $	648	PROTOTYPE: $
1282	CODE:	649	CODE:
1283	max_poll_reqs = nreqs;	650	eio_set_max_poll_reqs (nreqs);
1284		651
1285	void	652	void
1286	max_poll_time (double nseconds)	653	max_poll_time (double nseconds)
1287	PROTOTYPE: $	654	PROTOTYPE: $
1288	CODE:	655	CODE:
1289	max_poll_time = nseconds * AIO_TICKS;	656	eio_set_max_poll_time (nseconds);
1290		657
1291	void	658	void
1292	min_parallel (int nthreads)	659	min_parallel (int nthreads)
1293	PROTOTYPE: $	660	PROTOTYPE: $
		661	CODE:
		662	eio_set_min_parallel (nthreads);
1294		663
1295	void	664	void
1296	max_parallel (int nthreads)	665	max_parallel (int nthreads)
1297	PROTOTYPE: $	666	PROTOTYPE: $
		667	CODE:
		668	eio_set_max_parallel (nthreads);
1298		669
1299	void	670	void
1300	max_idle (int nthreads)	671	max_idle (int nthreads)
1301	PROTOTYPE: $	672	PROTOTYPE: $
1302	CODE:	673	CODE:
1303	set_max_idle (nthreads);	674	eio_set_max_idle (nthreads);
1304		675
1305	int	676	void
1306	max_outstanding (int maxreqs)	677	max_outstanding (int maxreqs)
1307	PROTOTYPE: $	678	PROTOTYPE: $
1308	CODE:	679	CODE:
1309	RETVAL = max_outstanding;
1310	max_outstanding = maxreqs;	680	max_outstanding = maxreqs;
1311	OUTPUT:
1312	RETVAL
1313		681
1314	void	682	void
1315	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	683	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1316	SV8 * pathname
1317	int flags
1318	int mode
1319	SV * callback
1320	PROTOTYPE: $$$;$	684	PROTOTYPE: $$$;$
1321	PPCODE:	685	PPCODE:
1322	{	686	{
1323	dREQ;	687	dREQ;
1324		688
1325	req->type = REQ_OPEN;	689	req->type = EIO_OPEN;
1326	req->sv1 = newSVsv (pathname);	690	req->sv1 = newSVsv (pathname);
1327	req->ptr1 = SvPVbyte_nolen (req->sv1);	691	req->ptr1 = SvPVbyte_nolen (req->sv1);
1328	req->int1 = flags;	692	req->int1 = flags;
1329	req->mode = mode;	693	req->int2 = mode;
1330		694
1331	REQ_SEND;	695	REQ_SEND;
1332	}	696	}
1333		697
1334	void	698	void
1335	aio_close (fh,callback=&PL_sv_undef)	699	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1336	SV * fh
1337	SV * callback
1338	PROTOTYPE: $;$	700	PROTOTYPE: $;$
1339	ALIAS:	701	ALIAS:
1340	aio_close = REQ_CLOSE
1341	aio_fsync = REQ_FSYNC	702	aio_fsync = EIO_FSYNC
1342	aio_fdatasync = REQ_FDATASYNC	703	aio_fdatasync = EIO_FDATASYNC
1343	PPCODE:	704	PPCODE:
1344	{	705	{
		706	int fd = extract_fd (fh, 0);
1345	dREQ;	707	dREQ;
1346		708
1347	req->type = ix;	709	req->type = ix;
1348	req->fh = newSVsv (fh);	710	req->sv1 = newSVsv (fh);
1349	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	711	req->int1 = fd;
1350		712
1351	REQ_SEND (req);	713	REQ_SEND (req);
1352	}	714	}
1353		715
1354	void	716	void
		717	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		718	PROTOTYPE: $$$$;$
		719	PPCODE:
		720	{
		721	int fd = extract_fd (fh, 0);
		722	dREQ;
		723
		724	req->type = EIO_SYNC_FILE_RANGE;
		725	req->sv1 = newSVsv (fh);
		726	req->int1 = fd;
		727	req->offs = offset;
		728	req->size = nbytes;
		729	req->int2 = flags;
		730
		731	REQ_SEND (req);
		732	}
		733
		734	void
		735	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		736	PROTOTYPE: $;$
		737	PPCODE:
		738	{
		739	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		740	int fd = extract_fd (fh, 0);
		741	dREQ;
		742
		743	if (close_pipe < 0)
		744	{
		745	int pipefd [2];
		746
		747	if (pipe (pipefd) < 0
		748	|| close (pipefd [1]) < 0
		749	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		750	abort (); /*D*/
		751
		752	close_pipe = pipefd [0];
		753	}
		754
		755	req->type = EIO_DUP2;
		756	req->int1 = close_pipe;
		757	req->sv2 = newSVsv (fh);
		758	req->int2 = fd;
		759
		760	REQ_SEND (req);
		761	}
		762
		763	void
1355	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	764	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1356	SV * fh
1357	UV offset
1358	UV length
1359	SV8 * data
1360	UV dataoffset
1361	SV * callback
1362	ALIAS:	765	ALIAS:
1363	aio_read = REQ_READ	766	aio_read = EIO_READ
1364	aio_write = REQ_WRITE	767	aio_write = EIO_WRITE
1365	PROTOTYPE: $$$$$;$	768	PROTOTYPE: $$$$$;$
1366	PPCODE:	769	PPCODE:
1367	{	770	{
1368	STRLEN svlen;	771	STRLEN svlen;
		772	int fd = extract_fd (fh, ix == EIO_WRITE);
1369	char *svptr = SvPVbyte (data, svlen);	773	char *svptr = SvPVbyte (data, svlen);
1370		774	UV len = SvUV (length);
1371	SvUPGRADE (data, SVt_PV);
1372	SvPOK_on (data);
1373		775
1374	if (dataoffset < 0)	776	if (dataoffset < 0)
1375	dataoffset += svlen;	777	dataoffset += svlen;
1376		778
1377	if (dataoffset < 0 || dataoffset > svlen)	779	if (dataoffset < 0 || dataoffset > svlen)
1378	croak ("data offset outside of string");	780	croak ("dataoffset outside of data scalar");
1379		781
1380	if (ix == REQ_WRITE)	782	if (ix == EIO_WRITE)
1381	{	783	{
1382	/* write: check length and adjust. */	784	/* write: check length and adjust. */
1383	if (length < 0 || length + dataoffset > svlen)	785	if (!SvOK (length) || len + dataoffset > svlen)
1384	length = svlen - dataoffset;	786	len = svlen - dataoffset;
1385	}	787	}
1386	else	788	else
1387	{	789	{
1388	/* read: grow scalar as necessary */	790	/* read: check type and grow scalar as necessary */
		791	SvUPGRADE (data, SVt_PV);
1389	svptr = SvGROW (data, length + dataoffset);	792	svptr = SvGROW (data, len + dataoffset + 1);
1390	}	793	}
1391
1392	if (length < 0)
1393	croak ("length must not be negative");
1394		794
1395	{	795	{
1396	dREQ;	796	dREQ;
1397		797
1398	req->type = ix;	798	req->type = ix;
1399	req->fh = newSVsv (fh);	799	req->sv1 = newSVsv (fh);
1400	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	800	req->int1 = fd;
1401	: IoOFP (sv_2io (fh)));	801	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1402	req->offs = offset;
1403	req->size = length;	802	req->size = len;
1404	req->sv1 = SvREFCNT_inc (data);	803	req->sv2 = SvREFCNT_inc (data);
1405	req->ptr1 = (char *)svptr + dataoffset;	804	req->ptr2 = (char *)svptr + dataoffset;
1406	req->stroffset = dataoffset;	805	req->stroffset = dataoffset;
1407		806
1408	if (!SvREADONLY (data))	807	if (!SvREADONLY (data))
1409	{	808	{
1410	SvREADONLY_on (data);	809	SvREADONLY_on (data);
1411	req->flags |= FLAG_SV1_RO_OFF;	810	req->flags |= FLAG_SV2_RO_OFF;
1412	}	811	}
1413		812
1414	REQ_SEND;	813	REQ_SEND;
1415	}	814	}
1416	}	815	}
1417		816
1418	void	817	void
1419	aio_readlink (path,callback=&PL_sv_undef)	818	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1420	SV8 * path
1421	SV * callback
1422	PROTOTYPE: $$;$	819	PROTOTYPE: $$;$
1423	PPCODE:	820	PPCODE:
1424	{	821	{
1425	SV *data;	822	SV *data;
1426	dREQ;	823	dREQ;
1427		824
1428	data = newSV (NAME_MAX);
1429	SvPOK_on (data);
1430
1431	req->type = REQ_READLINK;	825	req->type = EIO_READLINK;
1432	req->fh = newSVsv (path);	826	req->sv1 = newSVsv (path);
1433	req->ptr2 = SvPVbyte_nolen (req->fh);	827	req->ptr1 = SvPVbyte_nolen (req->sv1);
1434	req->sv1 = data;
1435	req->ptr1 = SvPVbyte_nolen (data);
1436		828
1437	REQ_SEND;	829	REQ_SEND;
1438	}	830	}
1439		831
1440	void	832	void
1441	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	833	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1442	SV * out_fh
1443	SV * in_fh
1444	UV in_offset
1445	UV length
1446	SV * callback
1447	PROTOTYPE: $$$$;$	834	PROTOTYPE: $$$$;$
1448	PPCODE:	835	PPCODE:
1449	{	836	{
		837	int ifd = extract_fd (in_fh , 0);
		838	int ofd = extract_fd (out_fh, 0);
1450	dREQ;	839	dREQ;
1451		840
1452	req->type = REQ_SENDFILE;	841	req->type = EIO_SENDFILE;
1453	req->fh = newSVsv (out_fh);	842	req->sv1 = newSVsv (out_fh);
1454	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	843	req->int1 = ofd;
1455	req->sv2 = newSVsv (in_fh);	844	req->sv2 = newSVsv (in_fh);
1456	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	845	req->int2 = ifd;
1457	req->offs = in_offset;	846	req->offs = in_offset;
1458	req->size = length;	847	req->size = length;
1459		848
1460	REQ_SEND;	849	REQ_SEND;
1461	}	850	}
1462		851
1463	void	852	void
1464	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	853	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1465	SV * fh
1466	UV offset
1467	IV length
1468	SV * callback
1469	PROTOTYPE: $$$;$	854	PROTOTYPE: $$$;$
1470	PPCODE:	855	PPCODE:
1471	{	856	{
		857	int fd = extract_fd (fh, 0);
1472	dREQ;	858	dREQ;
1473		859
1474	req->type = REQ_READAHEAD;	860	req->type = EIO_READAHEAD;
1475	req->fh = newSVsv (fh);	861	req->sv1 = newSVsv (fh);
1476	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	862	req->int1 = fd;
1477	req->offs = offset;	863	req->offs = offset;
1478	req->size = length;	864	req->size = length;
1479		865
1480	REQ_SEND;	866	REQ_SEND;
1481	}	867	}
1482		868
1483	void	869	void
1484	aio_stat (fh_or_path,callback=&PL_sv_undef)	870	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1485	SV8 * fh_or_path
1486	SV * callback
1487	ALIAS:	871	ALIAS:
1488	aio_stat = REQ_STAT	872	aio_stat = EIO_STAT
1489	aio_lstat = REQ_LSTAT	873	aio_lstat = EIO_LSTAT
1490	PPCODE:	874	PPCODE:
1491	{	875	{
1492	dREQ;	876	dREQ;
1493		877
1494	req->ptr2 = malloc (sizeof (Stat_t));	878	req->sv1 = newSVsv (fh_or_path);
1495	if (!req->ptr2)
1496	{
1497	req_free (req);
1498	croak ("out of memory during aio_stat statdata allocation");
1499	}
1500		879
1501	req->flags |= FLAG_PTR2_FREE;	880	if (SvPOK (req->sv1))
1502
1503	if (SvPOK (fh_or_path))
1504	{	881	{
1505	req->type = ix;	882	req->type = ix;
1506	req->sv1 = newSVsv (fh_or_path);
1507	req->ptr1 = SvPVbyte_nolen (req->sv1);	883	req->ptr1 = SvPVbyte_nolen (req->sv1);
1508	}	884	}
1509	else	885	else
1510	{	886	{
1511	req->type = REQ_FSTAT;	887	req->type = EIO_FSTAT;
1512	req->fh = newSVsv (fh_or_path);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	888	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1514	}	889	}
1515		890
1516	REQ_SEND;	891	REQ_SEND;
1517	}	892	}
1518		893
1519	void	894	void
		895	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		896	PPCODE:
		897	{
		898	dREQ;
		899
		900	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		901	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		902	req->sv1 = newSVsv (fh_or_path);
		903
		904	if (SvPOK (req->sv1))
		905	{
		906	req->type = EIO_UTIME;
		907	req->ptr1 = SvPVbyte_nolen (req->sv1);
		908	}
		909	else
		910	{
		911	req->type = EIO_FUTIME;
		912	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		913	}
		914
		915	REQ_SEND;
		916	}
		917
		918	void
		919	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		920	PPCODE:
		921	{
		922	dREQ;
		923
		924	req->sv1 = newSVsv (fh_or_path);
		925	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		926
		927	if (SvPOK (req->sv1))
		928	{
		929	req->type = EIO_TRUNCATE;
		930	req->ptr1 = SvPVbyte_nolen (req->sv1);
		931	}
		932	else
		933	{
		934	req->type = EIO_FTRUNCATE;
		935	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		936	}
		937
		938	REQ_SEND;
		939	}
		940
		941	void
		942	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		943	ALIAS:
		944	aio_chmod = EIO_CHMOD
		945	aio_mkdir = EIO_MKDIR
		946	PPCODE:
		947	{
		948	dREQ;
		949
		950	req->int2 = mode;
		951	req->sv1 = newSVsv (fh_or_path);
		952
		953	if (SvPOK (req->sv1))
		954	{
		955	req->type = ix;
		956	req->ptr1 = SvPVbyte_nolen (req->sv1);
		957	}
		958	else
		959	{
		960	req->type = EIO_FCHMOD;
		961	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		962	}
		963
		964	REQ_SEND;
		965	}
		966
		967	void
		968	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		969	PPCODE:
		970	{
		971	dREQ;
		972
		973	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		974	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		975	req->sv1 = newSVsv (fh_or_path);
		976
		977	if (SvPOK (req->sv1))
		978	{
		979	req->type = EIO_CHOWN;
		980	req->ptr1 = SvPVbyte_nolen (req->sv1);
		981	}
		982	else
		983	{
		984	req->type = EIO_FCHOWN;
		985	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		986	}
		987
		988	REQ_SEND;
		989	}
		990
		991	void
		992	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		993	PPCODE:
		994	{
		995	dREQ;
		996
		997	req->type = EIO_READDIR;
		998	req->sv1 = newSVsv (pathname);
		999	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1000	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1001
		1002	if (flags & EIO_READDIR_DENTS)
		1003	req->int1 |= EIO_READDIR_CUSTOM2;
		1004
		1005	REQ_SEND;
		1006	}
		1007
		1008	void
1520	aio_unlink (pathname,callback=&PL_sv_undef)	1009	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1521	SV8 * pathname
1522	SV * callback
1523	ALIAS:	1010	ALIAS:
1524	aio_unlink = REQ_UNLINK	1011	aio_unlink = EIO_UNLINK
1525	aio_rmdir = REQ_RMDIR	1012	aio_rmdir = EIO_RMDIR
1526	aio_readdir = REQ_READDIR	1013	aio_readdir = EIO_READDIR
1527	PPCODE:	1014	PPCODE:
1528	{	1015	{
1529	dREQ;	1016	dREQ;
1530		1017
1531	req->type = ix;	1018	req->type = ix;
…		…
1534		1021
1535	REQ_SEND;	1022	REQ_SEND;
1536	}	1023	}
1537		1024
1538	void	1025	void
1539	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1026	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1540	SV8 * oldpath
1541	SV8 * newpath
1542	SV * callback
1543	ALIAS:	1027	ALIAS:
1544	aio_link = REQ_LINK	1028	aio_link = EIO_LINK
1545	aio_symlink = REQ_SYMLINK	1029	aio_symlink = EIO_SYMLINK
1546	aio_rename = REQ_RENAME	1030	aio_rename = EIO_RENAME
1547	PPCODE:	1031	PPCODE:
1548	{	1032	{
1549	dREQ;	1033	dREQ;
1550		1034
1551	req->type = ix;	1035	req->type = ix;
1552	req->fh = newSVsv (oldpath);	1036	req->sv1 = newSVsv (oldpath);
1553	req->ptr2 = SvPVbyte_nolen (req->fh);
1554	req->sv1 = newSVsv (newpath);
1555	req->ptr1 = SvPVbyte_nolen (req->sv1);	1037	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1038	req->sv2 = newSVsv (newpath);
		1039	req->ptr2 = SvPVbyte_nolen (req->sv2);
1556		1040
1557	REQ_SEND;	1041	REQ_SEND;
1558	}	1042	}
1559		1043
1560	void	1044	void
1561	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1045	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1562	SV8 * pathname
1563	SV * callback
1564	UV mode
1565	UV dev
1566	PPCODE:	1046	PPCODE:
1567	{	1047	{
1568	dREQ;	1048	dREQ;
1569		1049
1570	req->type = REQ_MKNOD;	1050	req->type = EIO_MKNOD;
1571	req->sv1 = newSVsv (pathname);	1051	req->sv1 = newSVsv (pathname);
1572	req->ptr1 = SvPVbyte_nolen (req->sv1);	1052	req->ptr1 = SvPVbyte_nolen (req->sv1);
1573	req->mode = (mode_t)mode;	1053	req->int2 = (mode_t)mode;
1574	req->offs = dev;	1054	req->offs = dev;
1575		1055
1576	REQ_SEND;	1056	REQ_SEND;
1577	}	1057	}
1578		1058
1579	void	1059	void
1580	aio_busy (delay,callback=&PL_sv_undef)	1060	aio_busy (double delay, SV *callback=&PL_sv_undef)
1581	double delay
1582	SV * callback
1583	PPCODE:	1061	PPCODE:
1584	{	1062	{
1585	dREQ;	1063	dREQ;
1586		1064
1587	req->type = REQ_BUSY;	1065	req->type = EIO_BUSY;
1588	req->int1 = delay < 0. ? 0 : delay;	1066	req->nv1 = delay < 0. ? 0. : delay;
1589	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1590		1067
1591	REQ_SEND;	1068	REQ_SEND;
1592	}	1069	}
1593		1070
1594	void	1071	void
1595	aio_group (callback=&PL_sv_undef)	1072	aio_group (SV *callback=&PL_sv_undef)
1596	SV * callback
1597	PROTOTYPE: ;$	1073	PROTOTYPE: ;$
1598	PPCODE:	1074	PPCODE:
1599	{	1075	{
1600	dREQ;	1076	dREQ;
1601		1077
1602	req->type = REQ_GROUP;	1078	req->type = EIO_GROUP;
1603		1079
1604	req_send (req);	1080	req_submit (req);
1605	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1081	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1606	}	1082	}
1607		1083
1608	void	1084	void
1609	aio_nop (callback=&PL_sv_undef)	1085	aio_nop (SV *callback=&PL_sv_undef)
1610	SV * callback	1086	ALIAS:
		1087	aio_nop = EIO_NOP
		1088	aio_sync = EIO_SYNC
1611	PPCODE:	1089	PPCODE:
1612	{	1090	{
1613	dREQ;	1091	dREQ;
1614		1092
1615	req->type = REQ_NOP;	1093	req->type = ix;
1616		1094
1617	REQ_SEND;	1095	REQ_SEND;
1618	}	1096	}
1619		1097
1620	int	1098	int
1621	aioreq_pri (int pri = 0)	1099	aioreq_pri (int pri = 0)
1622	PROTOTYPE: ;$	1100	PROTOTYPE: ;$
1623	CODE:	1101	CODE:
1624	RETVAL = next_pri - PRI_BIAS;	1102	RETVAL = next_pri;
1625	if (items > 0)	1103	if (items > 0)
1626	{	1104	{
1627	if (pri < PRI_MIN) pri = PRI_MIN;	1105	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1628	if (pri > PRI_MAX) pri = PRI_MAX;	1106	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1629	next_pri = pri + PRI_BIAS;	1107	next_pri = pri;
1630	}	1108	}
1631	OUTPUT:	1109	OUTPUT:
1632	RETVAL	1110	RETVAL
1633		1111
1634	void	1112	void
1635	aioreq_nice (int nice = 0)	1113	aioreq_nice (int nice = 0)
1636	CODE:	1114	CODE:
1637	nice = next_pri - nice;	1115	nice = next_pri - nice;
1638	if (nice < PRI_MIN) nice = PRI_MIN;	1116	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1639	if (nice > PRI_MAX) nice = PRI_MAX;	1117	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1640	next_pri = nice + PRI_BIAS;	1118	next_pri = nice;
1641		1119
1642	void	1120	void
1643	flush ()	1121	flush ()
1644	PROTOTYPE:	1122	PROTOTYPE:
1645	CODE:	1123	CODE:
1646	while (nreqs)	1124	while (eio_nreqs ())
1647	{	1125	{
1648	poll_wait ();	1126	poll_wait ();
1649	poll_cb ();	1127	poll_cb ();
1650	}	1128	}
1651		1129
…		…
1682		1160
1683	int	1161	int
1684	nreqs()	1162	nreqs()
1685	PROTOTYPE:	1163	PROTOTYPE:
1686	CODE:	1164	CODE:
1687	RETVAL = nreqs;	1165	RETVAL = eio_nreqs ();
1688	OUTPUT:	1166	OUTPUT:
1689	RETVAL	1167	RETVAL
1690		1168
1691	int	1169	int
1692	nready()	1170	nready()
1693	PROTOTYPE:	1171	PROTOTYPE:
1694	CODE:	1172	CODE:
1695	RETVAL = get_nready ();	1173	RETVAL = eio_nready ();
1696	OUTPUT:	1174	OUTPUT:
1697	RETVAL	1175	RETVAL
1698		1176
1699	int	1177	int
1700	npending()	1178	npending()
1701	PROTOTYPE:	1179	PROTOTYPE:
1702	CODE:	1180	CODE:
1703	RETVAL = get_npending ();	1181	RETVAL = eio_npending ();
1704	OUTPUT:	1182	OUTPUT:
1705	RETVAL	1183	RETVAL
1706		1184
1707	int	1185	int
1708	nthreads()	1186	nthreads()
1709	PROTOTYPE:	1187	PROTOTYPE:
1710	CODE:	1188	CODE:
1711	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1189	RETVAL = eio_nthreads ();
1712	RETVAL = started;
1713	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1714	OUTPUT:	1190	OUTPUT:
1715	RETVAL	1191	RETVAL
1716		1192
		1193	int
		1194	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1195	PROTOTYPE: $$$$
		1196	CODE:
		1197	{
		1198	#if _XOPEN_SOURCE >= 600
		1199	RETVAL = posix_fadvise (fh, offset, length, advice);
		1200	#else
		1201	RETVAL = errno = ENOSYS;
		1202	#endif
		1203	}
		1204	OUTPUT:
		1205	RETVAL
		1206
		1207	ssize_t
		1208	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1209	PROTOTYPE: $$$$
		1210	CODE:
		1211	eio_sendfile_sync (ofh, ifh, offset, count);
		1212
		1213	void _on_next_submit (SV *cb)
		1214	CODE:
		1215	SvREFCNT_dec (on_next_submit);
		1216	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1217
1717	PROTOTYPES: DISABLE	1218	PROTOTYPES: DISABLE
1718		1219
1719	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1220	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1720		1221
1721	void	1222	void
1722	cancel (aio_req_ornot req)	1223	cancel (aio_req_ornot req)
1723	CODE:	1224	CODE:
1724	req_cancel (req);	1225	eio_cancel (req);
1725		1226
1726	void	1227	void
1727	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1228	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1728	CODE:	1229	PPCODE:
		1230	{
		1231	if (GIMME_V != G_VOID)
		1232	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1233
		1234	if (items > 1)
		1235	{
		1236	SV *cb_cv = get_cb (callback);
		1237
1729	SvREFCNT_dec (req->callback);	1238	SvREFCNT_dec (req->callback);
1730	req->callback = newSVsv (callback);	1239	req->callback = SvREFCNT_inc (cb_cv);
		1240	}
		1241	}
1731		1242
1732	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1243	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1733		1244
1734	void	1245	void
1735	add (aio_req grp, ...)	1246	add (aio_req grp, ...)
1736	PPCODE:	1247	PPCODE:
1737	{	1248	{
1738	int i;	1249	int i;
1739	aio_req req;
1740		1250
1741	if (grp->int1 == 2)	1251	if (grp->int1 == 2)
1742	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1252	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1743		1253
1744	for (i = 1; i < items; ++i )	1254	for (i = 1; i < items; ++i )
1745	{	1255	{
		1256	aio_req req;
		1257
1746	if (GIMME_V != G_VOID)	1258	if (GIMME_V != G_VOID)
1747	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1259	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1748		1260
1749	req = SvAIO_REQ (ST (i));	1261	req = SvAIO_REQ (ST (i));
1750		1262
1751	if (req)	1263	if (req)
1752	{	1264	eio_grp_add (grp, req);
1753	++grp->size;
1754	req->grp = grp;
1755
1756	req->grp_prev = 0;
1757	req->grp_next = grp->grp_first;
1758
1759	if (grp->grp_first)
1760	grp->grp_first->grp_prev = req;
1761
1762	grp->grp_first = req;
1763	}
1764	}	1265	}
1765	}	1266	}
1766		1267
1767	void	1268	void
1768	cancel_subs (aio_req_ornot req)	1269	cancel_subs (aio_req_ornot req)
…		…
1777	AV *av;	1278	AV *av;
1778		1279
1779	grp->errorno = errno;	1280	grp->errorno = errno;
1780		1281
1781	av = newAV ();	1282	av = newAV ();
		1283	av_extend (av, items - 1);
1782		1284
1783	for (i = 1; i < items; ++i )	1285	for (i = 1; i < items; ++i )
1784	av_push (av, newSVsv (ST (i)));	1286	av_push (av, newSVsv (ST (i)));
1785		1287
1786	SvREFCNT_dec (grp->sv1);	1288	SvREFCNT_dec (grp->sv1);
…		…
1793	grp->errorno = errorno;	1295	grp->errorno = errorno;
1794		1296
1795	void	1297	void
1796	limit (aio_req grp, int limit)	1298	limit (aio_req grp, int limit)
1797	CODE:	1299	CODE:
1798	grp->int2 = limit;	1300	eio_grp_limit (grp, limit);
1799	aio_grp_feed (grp);
1800		1301
1801	void	1302	void
1802	feed (aio_req grp, SV *callback=&PL_sv_undef)	1303	feed (aio_req grp, SV *callback=&PL_sv_undef)
1803	CODE:	1304	CODE:
1804	{	1305	{
1805	SvREFCNT_dec (grp->sv2);	1306	SvREFCNT_dec (grp->sv2);
1806	grp->sv2 = newSVsv (callback);	1307	grp->sv2 = newSVsv (callback);
		1308	grp->feed = aio_grp_feed;
1807		1309
1808	if (grp->int2 <= 0)	1310	if (grp->int2 <= 0)
1809	grp->int2 = 2;	1311	grp->int2 = 2;
1810		1312
1811	aio_grp_feed (grp);	1313	eio_grp_limit (grp, grp->int2);
1812	}	1314	}
1813		1315

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