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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.101 by root, Fri Jun 1 13:25:51 2007 UTC vs.
Revision 1.151 by root, Tue Jul 14 00:13:36 2009 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
8		8
9	#include "autoconf/config.h"	9	#include "schmorp.h"
10		10
11	#include <stddef.h>	11	#include <stddef.h>
12	#include <stdlib.h>	12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
		19
		20	/* perl namespace pollution */
		21	#undef VERSION
		22
		23	#ifdef _WIN32
		24
		25	# define EIO_STRUCT_DIRENT Direntry_t
		26	# undef malloc
		27	# undef free
		28
		29	// perl overrides all those nice win32 functions
		30	# undef open
		31	# undef read
		32	# undef write
		33	# undef send
		34	# undef recv
		35	# undef stat
		36	# undef fstat
		37	# define lstat stat
		38	# undef truncate
		39	# undef ftruncate
		40	# undef open
		41	# undef close
		42	# undef unlink
		43	# undef rmdir
		44	# undef rename
		45	# undef lseek
		46
		47	# define chown(a,b,c) (errno = ENOSYS, -1)
		48	# define fchown(a,b,c) (errno = ENOSYS, -1)
		49	# define fchmod(a,b) (errno = ENOSYS, -1)
		50	# define symlink(a,b) (errno = ENOSYS, -1)
		51	# define readlink(a,b,c) (errno = ENOSYS, -1)
		52	# define mknod(a,b,c) (errno = ENOSYS, -1)
		53	# define truncate(a,b) (errno = ENOSYS, -1)
		54	# define ftruncate(fd,o) chsize ((fd), (o))
		55	# define fsync(fd) _commit (fd)
		56	# define opendir(fd) (errno = ENOSYS, 0)
		57	# define readdir(fd) (errno = ENOSYS, -1)
		58	# define closedir(fd) (errno = ENOSYS, -1)
		59	# define mkdir(a,b) mkdir (a)
		60
		61	#else
		62
		63	# include <sys/time.h>
		64	# include <sys/select.h>
		65	# include <unistd.h>
23	#include <utime.h>	66	# include <utime.h>
24
25	#if HAVE_SENDFILE
26	# if __linux
27	# include <sys/sendfile.h>
28	# elif __freebsd
29	# include <sys/socket.h>
30	# include <sys/uio.h>	67	# include <signal.h>
31	# elif __hpux	68	# define EIO_STRUCT_DIRENT struct dirent
32	# include <sys/socket.h>	69
33	# elif __solaris /* not yet */
34	# include <sys/sendfile.h>
35	# else
36	# error sendfile support requested but not available
37	# endif
38	#endif	70	#endif
39		71
40	/* number of seconds after which idle threads exit */	72	/* perl stupidly overrides readdir and maybe others */
41	#define IDLE_TIMEOUT 10	73	/* with thread-unsafe versions, imagine that :( */
		74	#undef readdir
		75	#undef opendir
		76	#undef closedir
42		77
43	/* used for struct dirent, AIX doesn't provide it */	78	#define EIO_STRUCT_STAT Stat_t
44	#ifndef NAME_MAX
45	# define NAME_MAX 4096
46	#endif
47
48	/* buffer size for various temporary buffers */
49	#define AIO_BUFSIZE 65536
50		79
51	/* use NV for 32 bit perls as it allows larger offsets */	80	/* use NV for 32 bit perls as it allows larger offsets */
52	#if IVSIZE >= 8	81	#if IVSIZE >= 8
		82	# define VAL64 IV
53	# define SvVAL64 SvIV	83	# define SvVAL64 SvIV
		84	# define newSVval64 newSViv
54	#else	85	#else
		86	# define VAL64 NV
55	# define SvVAL64 SvNV	87	# define SvVAL64 SvNV
		88	# define newSVval64 newSVnv
56	#endif	89	#endif
57		90
58	#define dBUF \	91	/*****************************************************************************/
59	char *aio_buf; \
60	LOCK (wrklock); \
61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
62	UNLOCK (wrklock); \
63	if (!aio_buf) \
64	return -1;
65		92
		93	#if __GNUC__ >= 3
		94	# define expect(expr,value) __builtin_expect ((expr),(value))
		95	#else
		96	# define expect(expr,value) (expr)
		97	#endif
		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
		103
		104	static HV *stash;
66	typedef SV SV8; /* byte-sv, used for argument-checking */	105	typedef SV SV8; /* byte-sv, used for argument-checking */
67		106	typedef int aio_rfd; /* read file desriptor */
68	enum {	107	typedef int aio_wfd; /* write file descriptor */
69	REQ_QUIT,
70	REQ_OPEN, REQ_CLOSE,
71	REQ_READ, REQ_WRITE,
72	REQ_READAHEAD, REQ_SENDFILE,
73	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
74	REQ_UTIME, REQ_FUTIME,
75	REQ_CHMOD, REQ_FCHMOD,
76	REQ_CHOWN, REQ_FCHOWN,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79	REQ_MKNOD, REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};
84		108
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		111
88	typedef struct aio_cb	112	#define EIO_REQ_MEMBERS \
89	{
90	struct aio_cb *volatile next;
91
92	SV *callback;	113	SV *callback; \
93	SV *sv1, *sv2;	114	SV *sv1, *sv2; \
94	void *ptr1, *ptr2;
95	off_t offs;
96	size_t size;
97	ssize_t result;
98	double nv1, nv2;
99
100	STRLEN stroffset;	115	STRLEN stroffset; \
101	int type;	116	SV *self;
102	int int1, int2, int3;
103	int errorno;
104	mode_t mode; /* open */
105		117
106	unsigned char flags;	118	#define EIO_NO_WRAPPERS 1
107	unsigned char pri;
108		119
109	SV *self; /* the perl counterpart of this request, if any */	120	#include "libeio/eio.h"
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	121
111	} aio_cb;	122	#ifndef POSIX_FADV_NORMAL
		123	# define POSIX_FADV_NORMAL 0
		124	# define NO_FADVISE 1
		125	#endif
		126
		127	#ifndef POSIX_FADV_SEQUENTIAL
		128	# define POSIX_FADV_SEQUENTIAL 0
		129	#endif
		130
		131	#ifndef POSIX_FADV_RANDOM
		132	# define POSIX_FADV_RANDOM 0
		133	#endif
		134
		135	#ifndef POSIX_FADV_NOREUSE
		136	# define POSIX_FADV_NOREUSE 0
		137	#endif
		138
		139	#ifndef POSIX_FADV_WILLNEED
		140	# define POSIX_FADV_WILLNEED 0
		141	#endif
		142
		143	#ifndef POSIX_FADV_DONTNEED
		144	# define POSIX_FADV_DONTNEED 0
		145	#endif
		146
		147	static int req_invoke (eio_req *req);
		148	#define EIO_FINISH(req) req_invoke (req)
		149	static void req_destroy (eio_req *grp);
		150	#define EIO_DESTROY(req) req_destroy (req)
112		151
113	enum {	152	enum {
114	FLAG_CANCELLED = 0x01, /* request was cancelled */
115	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */	153	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
117	};	154	};
118		155
		156	#include "libeio/eio.c"
		157
119	typedef aio_cb *aio_req;	158	typedef eio_req *aio_req;
120	typedef aio_cb *aio_req_ornot;	159	typedef eio_req *aio_req_ornot;
121		160
122	enum {	161	static SV *on_next_submit;
123	PRI_MIN = -4,	162	static int next_pri = EIO_PRI_DEFAULT;
124	PRI_MAX = 4,	163	static int max_outstanding;
125		164
126	DEFAULT_PRI = 0,	165	static int respipe_osf [2], respipe [2] = { -1, -1 };
127	PRI_BIAS = -PRI_MIN,
128	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
129	};
130		166
131	#define AIO_TICKS ((1000000 + 1023) >> 10)
132
133	static unsigned int max_poll_time = 0;
134	static unsigned int max_poll_reqs = 0;
135
136	/* calculcate time difference in ~1/AIO_TICKS of a second */
137	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
138	{
139	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
140	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
141	}
142
143	static thread_t main_tid;
144	static int main_sig;
145	static int block_sig_level;
146
147	void block_sig ()
148	{
149	sigset_t ss;
150
151	if (block_sig_level++)
152	return;
153
154	if (!main_sig)
155	return;
156
157	sigemptyset (&ss);
158	sigaddset (&ss, main_sig);
159	pthread_sigmask (SIG_BLOCK, &ss, 0);
160	}
161
162	void unblock_sig ()
163	{
164	sigset_t ss;
165
166	if (--block_sig_level)
167	return;
168
169	if (!main_sig)
170	return;
171
172	sigemptyset (&ss);
173	sigaddset (&ss, main_sig);
174	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
175	}
176
177	static int next_pri = DEFAULT_PRI + PRI_BIAS;
178
179	static unsigned int started, idle, wanted;
180
181	/* worker threads management */
182	static mutex_t wrklock = MUTEX_INIT;
183
184	typedef struct worker {
185	/* locked by wrklock */
186	struct worker *prev, *next;
187
188	thread_t tid;
189
190	/* locked by reslock, reqlock or wrklock */
191	aio_req req; /* currently processed request */
192	void *dbuf;
193	DIR *dirp;
194	} worker;
195
196	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
197
198	static void worker_clear (worker *wrk)
199	{
200	if (wrk->dirp)
201	{
202	closedir (wrk->dirp);
203	wrk->dirp = 0;
204	}
205
206	if (wrk->dbuf)
207	{
208	free (wrk->dbuf);
209	wrk->dbuf = 0;
210	}
211	}
212
213	static void worker_free (worker *wrk)
214	{
215	wrk->next->prev = wrk->prev;
216	wrk->prev->next = wrk->next;
217
218	free (wrk);
219	}
220
221	static volatile unsigned int nreqs, nready, npending;
222	static volatile unsigned int max_idle = 4;
223	static volatile unsigned int max_outstanding = 0xffffffff;
224	static int respipe [2];
225
226	static mutex_t reslock = MUTEX_INIT;
227	static mutex_t reqlock = MUTEX_INIT;
228	static cond_t reqwait = COND_INIT;
229
230	#if WORDACCESS_UNSAFE
231
232	static unsigned int get_nready ()
233	{
234	unsigned int retval;
235
236	LOCK (reqlock);
237	retval = nready;
238	UNLOCK (reqlock);
239
240	return retval;
241	}
242
243	static unsigned int get_npending ()
244	{
245	unsigned int retval;
246
247	LOCK (reslock);
248	retval = npending;
249	UNLOCK (reslock);
250
251	return retval;
252	}
253
254	static unsigned int get_nthreads ()
255	{
256	unsigned int retval;
257
258	LOCK (wrklock);
259	retval = started;
260	UNLOCK (wrklock);
261
262	return retval;
263	}
264
265	#else
266
267	# define get_nready() nready
268	# define get_npending() npending
269	# define get_nthreads() started
270
271	#endif
272
273	/*
274	* a somewhat faster data structure might be nice, but
275	* with 8 priorities this actually needs <20 insns
276	* per shift, the most expensive operation.
277	*/
278	typedef struct {
279	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
280	int size;
281	} reqq;
282
283	static reqq req_queue;
284	static reqq res_queue;
285
286	int reqq_push (reqq *q, aio_req req)
287	{
288	int pri = req->pri;
289	req->next = 0;
290
291	if (q->qe[pri])
292	{
293	q->qe[pri]->next = req;
294	q->qe[pri] = req;
295	}
296	else
297	q->qe[pri] = q->qs[pri] = req;
298
299	return q->size++;
300	}
301
302	aio_req reqq_shift (reqq *q)
303	{
304	int pri;
305
306	if (!q->size)
307	return 0;
308
309	--q->size;
310
311	for (pri = NUM_PRI; pri--; )
312	{
313	aio_req req = q->qs[pri];
314
315	if (req)
316	{
317	if (!(q->qs[pri] = req->next))
318	q->qe[pri] = 0;
319
320	return req;
321	}
322	}
323
324	abort ();
325	}
326
327	static int poll_cb ();
328	static int req_invoke (aio_req req);
329	static void req_destroy (aio_req req);	167	static void req_destroy (aio_req req);
330	static void req_cancel (aio_req req);	168	static void req_cancel (aio_req req);
		169
		170	static void want_poll (void)
		171	{
		172	/* write a dummy byte to the pipe so fh becomes ready */
		173	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		174	}
		175
		176	static void done_poll (void)
		177	{
		178	/* read any signals sent by the worker threads */
		179	char buf [4];
		180	while (respipe_read (respipe [0], buf, 4) == 4)
		181	;
		182	}
331		183
332	/* must be called at most once */	184	/* must be called at most once */
333	static SV *req_sv (aio_req req, const char *klass)	185	static SV *req_sv (aio_req req, const char *klass)
334	{	186	{
335	if (!req->self)	187	if (!req->self)
…		…
353	return mg ? (aio_req)mg->mg_ptr : 0;	205	return mg ? (aio_req)mg->mg_ptr : 0;
354	}	206	}
355		207
356	static void aio_grp_feed (aio_req grp)	208	static void aio_grp_feed (aio_req grp)
357	{	209	{
358	block_sig ();	210	if (grp->sv2 && SvOK (grp->sv2))
359
360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
361	{	211	{
362	int old_len = grp->size;
363
364	if (grp->sv2 && SvOK (grp->sv2))
365	{
366	dSP;	212	dSP;
367		213
368	ENTER;	214	ENTER;
369	SAVETMPS;	215	SAVETMPS;
370	PUSHMARK (SP);	216	PUSHMARK (SP);
371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	217	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
372	PUTBACK;	218	PUTBACK;
373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	219	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
374	SPAGAIN;	220	SPAGAIN;
375	FREETMPS;	221	FREETMPS;
376	LEAVE;	222	LEAVE;
377	}
378
379	/* stop if no progress has been made */
380	if (old_len == grp->size)
381	{
382	SvREFCNT_dec (grp->sv2);
383	grp->sv2 = 0;
384	break;
385	}
386	}	223	}
387
388	unblock_sig ();
389	}	224	}
390		225
391	static void aio_grp_dec (aio_req grp)	226	static void req_submit (eio_req *req)
392	{	227	{
393	--grp->size;	228	eio_submit (req);
394		229
395	/* call feeder, if applicable */	230	if (expect_false (on_next_submit))
396	aio_grp_feed (grp);
397
398	/* finish, if done */
399	if (!grp->size && grp->int1)
400	{	231	{
401	block_sig ();	232	dSP;
		233	SV *cb = sv_2mortal (on_next_submit);
402		234
403	if (!req_invoke (grp))	235	on_next_submit = 0;
404	{
405	req_destroy (grp);
406	unblock_sig ();
407	croak (0);
408	}
409		236
410	req_destroy (grp);	237	PUSHMARK (SP);
411	unblock_sig ();	238	PUTBACK;
		239	call_sv (cb, G_DISCARD | G_EVAL);
412	}	240	}
413	}	241	}
414		242
415	static int req_invoke (aio_req req)	243	static int req_invoke (eio_req *req)
416	{	244	{
417	dSP;	245	dSP;
418		246
419	if (req->flags & FLAG_SV2_RO_OFF)	247	if (req->flags & FLAG_SV2_RO_OFF)
420	SvREADONLY_off (req->sv2);	248	SvREADONLY_off (req->sv2);
421		249
422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	250	if (!EIO_CANCELLED (req) && req->callback)
423	{	251	{
424	ENTER;	252	ENTER;
425	SAVETMPS;	253	SAVETMPS;
426	PUSHMARK (SP);	254	PUSHMARK (SP);
427	EXTEND (SP, 1);	255	EXTEND (SP, 1);
428		256
429	switch (req->type)	257	switch (req->type)
430	{	258	{
431	case REQ_READDIR:	259	case EIO_READDIR:
432	{	260	{
433	SV *rv = &PL_sv_undef;	261	SV *rv = &PL_sv_undef;
434		262
435	if (req->result >= 0)	263	if (req->result >= 0)
436	{	264	{
437	int i;	265	int i;
438	char *buf = req->ptr2;	266	char *names = (char *)req->ptr2;
		267	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
439	AV *av = newAV ();	268	AV *av = newAV ();
440		269
441	av_extend (av, req->result - 1);	270	av_extend (av, req->result - 1);
442		271
443	for (i = 0; i < req->result; ++i)	272	for (i = 0; i < req->result; ++i)
444	{	273	{
445	SV *sv = newSVpv (buf, 0);	274	if (req->int1 & EIO_READDIR_DENTS)
		275	{
		276	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
446		277
		278	if (req->int1 & EIO_READDIR_CUSTOM2)
		279	{
		280	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		281	AV *avent = newAV ();
		282
		283	av_extend (avent, 2);
		284
		285	if (!sv_type [ent->type])
		286	{
		287	sv_type [ent->type] = newSViv (ent->type);
		288	SvREADONLY_on (sv_type [ent->type]);
		289	}
		290
		291	av_store (avent, 0, namesv);
		292	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		293	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		294
		295	av_store (av, i, newRV_noinc ((SV *)avent));
		296	}
		297	else
447	av_store (av, i, sv);	298	av_store (av, i, namesv);
		299
		300	++ent;
		301	}
		302	else
		303	{
		304	SV *name = newSVpv (names, 0);
		305	av_store (av, i, name);
448	buf += SvCUR (sv) + 1;	306	names += SvCUR (name) + 1;
		307	}
449	}	308	}
450		309
451	rv = sv_2mortal (newRV_noinc ((SV *)av));	310	rv = sv_2mortal (newRV_noinc ((SV *)av));
452	}	311	}
453		312
454	PUSHs (rv);	313	PUSHs (rv);
		314
		315	if (req->int1 & EIO_READDIR_CUSTOM1)
		316	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
455	}	317	}
456	break;	318	break;
457		319
458	case REQ_OPEN:	320	case EIO_OPEN:
459	{	321	{
460	/* convert fd to fh */	322	/* convert fd to fh */
461	SV *fh;	323	SV *fh = &PL_sv_undef;
462		324
463	PUSHs (sv_2mortal (newSViv (req->result)));	325	if (req->result >= 0)
464	PUTBACK;	326	{
465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	327	GV *gv = (GV *)sv_newmortal ();
466	SPAGAIN;	328	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		329	char sym [64];
		330	int symlen;
		331
		332	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		333	gv_init (gv, stash, sym, symlen, 0);
467		334
468	fh = POPs;	335	symlen = snprintf (
469	PUSHMARK (SP);	336	sym,
		337	sizeof (sym),
		338	"%s&=%d",
		339	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		340	(int)req->result
		341	);
		342
		343	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		344	fh = (SV *)gv;
		345	}
		346
470	XPUSHs (fh);	347	PUSHs (fh);
471	}	348	}
472	break;	349	break;
473		350
474	case REQ_GROUP:	351	case EIO_GROUP:
475	req->int1 = 2; /* mark group as finished */	352	req->int1 = 2; /* mark group as finished */
476		353
477	if (req->sv1)	354	if (req->sv1)
478	{	355	{
479	int i;	356	int i;
…		…
483	for (i = 0; i <= AvFILL (av); ++i)	360	for (i = 0; i <= AvFILL (av); ++i)
484	PUSHs (*av_fetch (av, i, 0));	361	PUSHs (*av_fetch (av, i, 0));
485	}	362	}
486	break;	363	break;
487		364
488	case REQ_NOP:	365	case EIO_NOP:
489	case REQ_BUSY:	366	case EIO_BUSY:
490	break;	367	break;
491		368
492	case REQ_READLINK:	369	case EIO_READLINK:
493	if (req->result > 0)	370	if (req->result > 0)
494	{	371	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
495	SvCUR_set (req->sv2, req->result);
496	*SvEND (req->sv2) = 0;
497	PUSHs (req->sv2);
498	}
499	break;	372	break;
500		373
501	case REQ_STAT:	374	case EIO_STAT:
502	case REQ_LSTAT:	375	case EIO_LSTAT:
503	case REQ_FSTAT:	376	case EIO_FSTAT:
504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	377	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
505	PL_laststatval = req->result;	378	PL_laststatval = req->result;
506	PL_statcache = *(Stat_t *)(req->ptr2);	379	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
507	PUSHs (sv_2mortal (newSViv (req->result)));	380	PUSHs (sv_2mortal (newSViv (req->result)));
508	break;	381	break;
509		382
510	case REQ_READ:	383	case EIO_READ:
		384	{
511	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	385	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
512	*SvEND (req->sv2) = 0;	386	*SvEND (req->sv2) = 0;
		387	SvPOK_only (req->sv2);
		388	SvSETMAGIC (req->sv2);
513	PUSHs (sv_2mortal (newSViv (req->result)));	389	PUSHs (sv_2mortal (newSViv (req->result)));
		390	}
514	break;	391	break;
		392
		393	case EIO_DUP2:
		394	if (req->result > 0)
		395	req->result = 0;
		396	/* FALLTHROUGH */
515		397
516	default:	398	default:
517	PUSHs (sv_2mortal (newSViv (req->result)));	399	PUSHs (sv_2mortal (newSViv (req->result)));
518	break;	400	break;
519	}	401	}
520		402
521	errno = req->errorno;	403	errno = req->errorno;
522		404
523	PUTBACK;	405	PUTBACK;
524	call_sv (req->callback, G_VOID | G_EVAL);	406	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525	SPAGAIN;	407	SPAGAIN;
526		408
527	FREETMPS;	409	FREETMPS;
528	LEAVE;	410	LEAVE;
		411
		412	PUTBACK;
529	}	413	}
530		414
531	if (req->grp)
532	{
533	aio_req grp = req->grp;
534
535	/* unlink request */
536	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
537	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
538
539	if (grp->grp_first == req)
540	grp->grp_first = req->grp_next;
541
542	aio_grp_dec (grp);
543	}
544
545	return !SvTRUE (ERRSV);	415	return !!SvTRUE (ERRSV);
546	}	416	}
547		417
548	static void req_destroy (aio_req req)	418	static void req_destroy (aio_req req)
549	{	419	{
550	if (req->self)	420	if (req->self)
…		…
555		425
556	SvREFCNT_dec (req->sv1);	426	SvREFCNT_dec (req->sv1);
557	SvREFCNT_dec (req->sv2);	427	SvREFCNT_dec (req->sv2);
558	SvREFCNT_dec (req->callback);	428	SvREFCNT_dec (req->callback);
559		429
560	if (req->flags & FLAG_PTR2_FREE)
561	free (req->ptr2);
562
563	Safefree (req);	430	Safefree (req);
564	}	431	}
565		432
566	static void req_cancel_subs (aio_req grp)	433	static void req_cancel_subs (aio_req grp)
567	{	434	{
568	aio_req sub;	435	aio_req sub;
569		436
570	if (grp->type != REQ_GROUP)	437	if (grp->type != EIO_GROUP)
571	return;	438	return;
572		439
573	SvREFCNT_dec (grp->sv2);	440	SvREFCNT_dec (grp->sv2);
574	grp->sv2 = 0;	441	grp->sv2 = 0;
575		442
576	for (sub = grp->grp_first; sub; sub = sub->grp_next)	443	eio_grp_cancel (grp);
577	req_cancel (sub);
578	}	444	}
579		445
580	static void req_cancel (aio_req req)	446	#ifdef USE_SOCKETS_AS_HANDLES
581	{	447	# define TO_SOCKET(x) (win32_get_osfhandle (x))
582	req->flags |= FLAG_CANCELLED;	448	#else
		449	# define TO_SOCKET(x) (x)
		450	#endif
583		451
584	req_cancel_subs (req);	452	static void
585	}	453	create_respipe (void)
586
587	static void *aio_proc (void *arg);
588
589	static void start_thread (void)
590	{	454	{
591	worker *wrk = calloc (1, sizeof (worker));	455	int old_readfd = respipe [0];
592		456
593	if (!wrk)	457	if (respipe [1] >= 0)
594	croak ("unable to allocate worker thread data");	458	respipe_close (TO_SOCKET (respipe [1]));
595		459
596	LOCK (wrklock);	460	#ifdef _WIN32
		461	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		462	#else
		463	if (pipe (respipe))
		464	#endif
		465	croak ("unable to initialize result pipe");
597		466
598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))	467	if (old_readfd >= 0)
599	{	468	{
600	wrk->prev = &wrk_first;	469	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
601	wrk->next = wrk_first.next;	470	croak ("unable to initialize result pipe(2)");
602	wrk_first.next->prev = wrk;	471
603	wrk_first.next = wrk;	472	respipe_close (respipe [0]);
604	++started;	473	respipe [0] = old_readfd;
605	}	474	}
606	else
607	free (wrk);
608		475
609	UNLOCK (wrklock);	476	#ifdef _WIN32
610	}	477	int arg = 1;
		478	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		479	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		480	#else
		481	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		482	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		483	#endif
		484	croak ("unable to initialize result pipe(3)");
611		485
612	static void maybe_start_thread ()	486	respipe_osf [0] = TO_SOCKET (respipe [0]);
613	{	487	respipe_osf [1] = TO_SOCKET (respipe [1]);
614	if (get_nthreads () >= wanted)
615	return;
616
617	/* todo: maybe use idle here, but might be less exact */
618	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
619	return;
620
621	start_thread ();
622	}	488	}
623		489
624	static void req_send (aio_req req)
625	{
626	block_sig ();
627
628	++nreqs;
629
630	LOCK (reqlock);
631	++nready;
632	reqq_push (&req_queue, req);
633	COND_SIGNAL (reqwait);
634	UNLOCK (reqlock);
635
636	unblock_sig ();
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	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 ()	490	static void poll_wait (void)
683	{	491	{
684	fd_set rfd;	492	fd_set rfd;
685		493
686	while (nreqs)	494	while (eio_nreqs ())
687	{	495	{
688	int size;	496	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	497
		498	X_LOCK (reslock);
690	size = res_queue.size;	499	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	500	X_UNLOCK (reslock);
692		501
693	if (size)	502	if (size)
694	return;	503	return;
695		504
696	maybe_start_thread ();	505	etp_maybe_start_thread ();
697		506
698	FD_ZERO(&rfd);	507	FD_ZERO (&rfd);
699	FD_SET(respipe [0], &rfd);	508	FD_SET (respipe [0], &rfd);
700		509
701	select (respipe [0] + 1, &rfd, 0, 0, 0);	510	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	511	}
703	}	512	}
704		513
705	static int poll_cb ()	514	static int poll_cb (void)
706	{	515	{
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	block_sig ();
718
719	for (;;)	516	for (;;)
720	{	517	{
721	for (;;)	518	int res = eio_poll ();
722	{
723	maybe_start_thread ();
724		519
725	LOCK (reslock);	520	if (res > 0)
726	req = reqq_shift (&res_queue);
727
728	if (req)
729	{
730	--npending;
731
732	if (!res_queue.size)
733	{
734	/* read any signals sent by the worker threads */
735	char buf [4];
736	while (read (respipe [0], buf, 4) == 4)
737	;
738	}
739	}
740
741	UNLOCK (reslock);
742
743	if (!req)
744	break;
745
746	--nreqs;
747
748	if (req->type == REQ_GROUP && req->size)
749	{
750	req->int1 = 1; /* mark request as delayed */
751	continue;
752	}
753	else
754	{
755	if (!req_invoke (req))
756	{
757	req_destroy (req);
758	unblock_sig ();
759	croak (0);	521	croak (0);
760	}
761		522
762	count++;	523	if (!max_outstanding || max_outstanding > eio_nreqs ())
763	}	524	return res;
764
765	req_destroy (req);
766
767	if (maxreqs && !--maxreqs)
768	break;
769
770	if (max_poll_time)
771	{
772	gettimeofday (&tv_now, 0);
773
774	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
775	break;
776	}
777	}
778
779	if (nreqs <= max_outstanding)
780	break;
781		525
782	poll_wait ();	526	poll_wait ();
783
784	++maxreqs;
785	}	527	}
786
787	unblock_sig ();
788	return count;
789	}	528	}
790		529
791	static void create_pipe ()	530	static void atfork_child (void)
792	{	531	{
793	if (pipe (respipe))	532	create_respipe ();
794	croak ("unable to initialize result pipe");
795
796	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
797	croak ("cannot set result pipe to nonblocking mode");
798
799	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
800	croak ("cannot set result pipe to nonblocking mode");
801	}	533	}
802		534
803	/*****************************************************************************/	535	static SV *
804	/* work around various missing functions */	536	get_cb (SV *cb_sv)
805
806	#if !HAVE_PREADWRITE
807	# define pread aio_pread
808	# define pwrite aio_pwrite
809
810	/*
811	* make our pread/pwrite safe against themselves, but not against
812	* normal read/write by using a mutex. slows down execution a lot,
813	* but that's your problem, not mine.
814	*/
815	static mutex_t preadwritelock = MUTEX_INIT;
816
817	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
818	{	537	{
819	ssize_t res;	538	HV *st;
820	off_t ooffset;	539	GV *gvp;
		540	CV *cv;
821		541
822	LOCK (preadwritelock);	542	if (!SvOK (cb_sv))
823	ooffset = lseek (fd, 0, SEEK_CUR);
824	lseek (fd, offset, SEEK_SET);
825	res = read (fd, buf, count);
826	lseek (fd, ooffset, SEEK_SET);
827	UNLOCK (preadwritelock);
828
829	return res;
830	}
831
832	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
833	{
834	ssize_t res;
835	off_t ooffset;
836
837	LOCK (preadwritelock);
838	ooffset = lseek (fd, 0, SEEK_CUR);
839	lseek (fd, offset, SEEK_SET);
840	res = write (fd, buf, count);
841	lseek (fd, offset, SEEK_SET);
842	UNLOCK (preadwritelock);
843
844	return res;
845	}
846	#endif
847
848	#ifndef HAVE_FUTIMES
849
850	# define utimes(path,times) aio_utimes (path, times)
851	# define futimes(fd,times) aio_futimes (fd, times)
852
853	int aio_utimes (const char *filename, const struct timeval times[2])
854	{
855	if (times)
856	{
857	struct utimbuf buf;
858
859	buf.actime = times[0].tv_sec;
860	buf.modtime = times[1].tv_sec;
861
862	return utime (filename, &buf);
863	}
864	else
865	return utime (filename, 0);
866	}
867
868	int aio_futimes (int fd, const struct timeval tv[2])
869	{
870	errno = ENOSYS;
871	return -1;
872	}
873
874	#endif
875
876	#if !HAVE_FDATASYNC
877	# define fdatasync fsync
878	#endif
879
880	#if !HAVE_READAHEAD
881	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
882
883	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
884	{
885	dBUF;
886
887	while (count > 0)
888	{
889	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
890
891	pread (fd, aio_buf, len, offset);
892	offset += len;
893	count -= len;
894	}
895
896	errno = 0;
897	}
898
899	#endif
900
901	#if !HAVE_READDIR_R
902	# define readdir_r aio_readdir_r
903
904	static mutex_t readdirlock = MUTEX_INIT;
905
906	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
907	{
908	struct dirent *e;
909	int errorno;
910
911	LOCK (readdirlock);
912
913	e = readdir (dirp);
914	errorno = errno;
915
916	if (e)
917	{
918	*res = ent;
919	strcpy (ent->d_name, e->d_name);
920	}
921	else
922	*res = 0;
923
924	UNLOCK (readdirlock);
925
926	errno = errorno;
927	return e ? 0 : -1;
928	}
929	#endif
930
931	/* sendfile always needs emulation */
932	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
933	{
934	ssize_t res;
935
936	if (!count)
937	return 0;	543	return 0;
938		544
939	#if HAVE_SENDFILE	545	cv = sv_2cv (cb_sv, &st, &gvp, 0);
940	# if __linux
941	res = sendfile (ofd, ifd, &offset, count);
942		546
943	# elif __freebsd	547	if (!cv)
944	/*	548	croak ("IO::AIO callback must be undef or a CODE reference");
945	* Of course, the freebsd sendfile is a dire hack with no thoughts
946	* wasted on making it similar to other I/O functions.
947	*/
948	{
949	off_t sbytes;
950	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
951		549
952	if (res < 0 && sbytes)	550	return (SV *)cv;
953	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
954	res = sbytes;
955	}
956
957	# elif __hpux
958	res = sendfile (ofd, ifd, offset, count, 0, 0);
959
960	# elif __solaris
961	{
962	struct sendfilevec vec;
963	size_t sbytes;
964
965	vec.sfv_fd = ifd;
966	vec.sfv_flag = 0;
967	vec.sfv_off = offset;
968	vec.sfv_len = count;
969
970	res = sendfilev (ofd, &vec, 1, &sbytes);
971
972	if (res < 0 && sbytes)
973	res = sbytes;
974	}
975
976	# endif
977	#else
978	res = -1;
979	errno = ENOSYS;
980	#endif
981
982	if (res < 0
983	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
984	#if __solaris
985	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
986	#endif
987	)
988	)
989	{
990	/* emulate sendfile. this is a major pain in the ass */
991	dBUF;
992
993	res = 0;
994
995	while (count)
996	{
997	ssize_t cnt;
998
999	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1000
1001	if (cnt <= 0)
1002	{
1003	if (cnt && !res) res = -1;
1004	break;
1005	}
1006
1007	cnt = write (ofd, aio_buf, cnt);
1008
1009	if (cnt <= 0)
1010	{
1011	if (cnt && !res) res = -1;
1012	break;
1013	}
1014
1015	offset += cnt;
1016	res += cnt;
1017	count -= cnt;
1018	}
1019	}
1020
1021	return res;
1022	}
1023
1024	/* read a full directory */
1025	static void scandir_ (aio_req req, worker *self)
1026	{
1027	DIR *dirp;
1028	union
1029	{
1030	struct dirent d;
1031	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1032	} *u;
1033	struct dirent *entp;
1034	char *name, *names;
1035	int memlen = 4096;
1036	int memofs = 0;
1037	int res = 0;
1038	int errorno;
1039
1040	LOCK (wrklock);
1041	self->dirp = dirp = opendir (req->ptr1);
1042	self->dbuf = u = malloc (sizeof (*u));
1043	req->flags |= FLAG_PTR2_FREE;
1044	req->ptr2 = names = malloc (memlen);
1045	UNLOCK (wrklock);
1046
1047	if (dirp && u && names)
1048	for (;;)
1049	{
1050	errno = 0;
1051	readdir_r (dirp, &u->d, &entp);
1052
1053	if (!entp)
1054	break;
1055
1056	name = entp->d_name;
1057
1058	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1059	{
1060	int len = strlen (name) + 1;
1061
1062	res++;
1063
1064	while (memofs + len > memlen)
1065	{
1066	memlen *= 2;
1067	LOCK (wrklock);
1068	req->ptr2 = names = realloc (names, memlen);
1069	UNLOCK (wrklock);
1070
1071	if (!names)
1072	break;
1073	}
1074
1075	memcpy (names + memofs, name, len);
1076	memofs += len;
1077	}
1078	}
1079
1080	if (errno)
1081	res = -1;
1082
1083	req->result = res;
1084	}
1085
1086	/*****************************************************************************/
1087
1088	static void *aio_proc (void *thr_arg)
1089	{
1090	aio_req req;
1091	struct timespec ts;
1092	worker *self = (worker *)thr_arg;
1093
1094	/* try to distribute timeouts somewhat evenly */
1095	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1096	* (1000000000UL / 1024UL);
1097
1098	for (;;)
1099	{
1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1101
1102	LOCK (reqlock);
1103
1104	for (;;)
1105	{
1106	self->req = req = reqq_shift (&req_queue);
1107
1108	if (req)
1109	break;
1110
1111	++idle;
1112
1113	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1114	== ETIMEDOUT)
1115	{
1116	if (idle > max_idle)
1117	{
1118	--idle;
1119	UNLOCK (reqlock);
1120	LOCK (wrklock);
1121	--started;
1122	UNLOCK (wrklock);
1123	goto quit;
1124	}
1125
1126	/* we are allowed to idle, so do so without any timeout */
1127	COND_WAIT (reqwait, reqlock);
1128	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1129	}
1130
1131	--idle;
1132	}
1133
1134	--nready;
1135
1136	UNLOCK (reqlock);
1137
1138	errno = 0; /* strictly unnecessary */
1139
1140	if (!(req->flags & FLAG_CANCELLED))
1141	switch (req->type)
1142	{
1143	case REQ_READ: req->result = req->offs >= 0
1144	? pread (req->int1, req->ptr1, req->size, req->offs)
1145	: read (req->int1, req->ptr1, req->size); break;
1146	case REQ_WRITE: req->result = req->offs >= 0
1147	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1148	: write (req->int1, req->ptr1, req->size); break;
1149
1150	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1151	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1152
1153	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1154	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1155	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1156
1157	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1158	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1159	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1160	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1161
1162	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1163	case REQ_CLOSE: req->result = close (req->int1); break;
1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1165	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1166	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1169	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1170	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1171	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1172
1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
1175	case REQ_READDIR: scandir_ (req, self); break;
1176
1177	case REQ_BUSY:
1178	{
1179	struct timeval tv;
1180
1181	tv.tv_sec = req->nv1;
1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1183
1184	req->result = select (0, 0, 0, 0, &tv);
1185	}
1186
1187	case REQ_UTIME:
1188	case REQ_FUTIME:
1189	{
1190	struct timeval tv[2];
1191	struct timeval *times;
1192
1193	if (req->nv1 != -1. || req->nv2 != -1.)
1194	{
1195	tv[0].tv_sec = req->nv1;
1196	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1197	tv[1].tv_sec = req->nv2;
1198	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1199
1200	times = tv;
1201	}
1202	else
1203	times = 0;
1204
1205
1206	req->result = req->type == REQ_FUTIME
1207	? futimes (req->int1, times)
1208	: utimes (req->ptr1, times);
1209	}
1210
1211	case REQ_GROUP:
1212	case REQ_NOP:
1213	break;
1214
1215	case REQ_QUIT:
1216	goto quit;
1217
1218	default:
1219	req->result = -1;
1220	break;
1221	}
1222
1223	req->errorno = errno;
1224
1225	LOCK (reslock);
1226
1227	++npending;
1228
1229	if (!reqq_push (&res_queue, req))
1230	{
1231	/* write a dummy byte to the pipe so fh becomes ready */
1232	write (respipe [1], &respipe, 1);
1233
1234	/* optionally signal the main thread asynchronously */
1235	if (main_sig)
1236	pthread_kill (main_tid, main_sig);
1237	}
1238
1239	self->req = 0;
1240	worker_clear (self);
1241
1242	UNLOCK (reslock);
1243	}
1244
1245	quit:
1246	LOCK (wrklock);
1247	worker_free (self);
1248	UNLOCK (wrklock);
1249
1250	return 0;
1251	}
1252
1253	/*****************************************************************************/
1254
1255	static void atfork_prepare (void)
1256	{
1257	LOCK (wrklock);
1258	LOCK (reqlock);
1259	LOCK (reslock);
1260	#if !HAVE_PREADWRITE
1261	LOCK (preadwritelock);
1262	#endif
1263	#if !HAVE_READDIR_R
1264	LOCK (readdirlock);
1265	#endif
1266	}
1267
1268	static void atfork_parent (void)
1269	{
1270	#if !HAVE_READDIR_R
1271	UNLOCK (readdirlock);
1272	#endif
1273	#if !HAVE_PREADWRITE
1274	UNLOCK (preadwritelock);
1275	#endif
1276	UNLOCK (reslock);
1277	UNLOCK (reqlock);
1278	UNLOCK (wrklock);
1279	}
1280
1281	static void atfork_child (void)
1282	{
1283	aio_req prv;
1284
1285	while (prv = reqq_shift (&req_queue))
1286	req_destroy (prv);
1287
1288	while (prv = reqq_shift (&res_queue))
1289	req_destroy (prv);
1290
1291	while (wrk_first.next != &wrk_first)
1292	{
1293	worker *wrk = wrk_first.next;
1294
1295	if (wrk->req)
1296	req_destroy (wrk->req);
1297
1298	worker_clear (wrk);
1299	worker_free (wrk);
1300	}
1301
1302	started = 0;
1303	idle = 0;
1304	nreqs = 0;
1305	nready = 0;
1306	npending = 0;
1307
1308	close (respipe [0]);
1309	close (respipe [1]);
1310	create_pipe ();
1311
1312	atfork_parent ();
1313	}	551	}
1314		552
1315	#define dREQ \	553	#define dREQ \
		554	SV *cb_cv; \
1316	aio_req req; \	555	aio_req req; \
1317	int req_pri = next_pri; \	556	int req_pri = next_pri; \
1318	next_pri = DEFAULT_PRI + PRI_BIAS; \	557	next_pri = EIO_PRI_DEFAULT; \
1319	\	558	\
1320	if (SvOK (callback) && !SvROK (callback)) \	559	cb_cv = get_cb (callback); \
1321	croak ("callback must be undef or of reference type"); \
1322	\	560	\
1323	Newz (0, req, 1, aio_cb); \	561	Newz (0, req, 1, eio_req); \
1324	if (!req) \	562	if (!req) \
1325	croak ("out of memory during aio_req allocation"); \	563	croak ("out of memory during eio_req allocation"); \
1326	\	564	\
1327	req->callback = newSVsv (callback); \	565	req->callback = SvREFCNT_inc (cb_cv); \
1328	req->pri = req_pri	566	req->pri = req_pri
1329		567
1330	#define REQ_SEND \	568	#define REQ_SEND \
		569	PUTBACK; \
1331	req_send (req); \	570	req_submit (req); \
		571	SPAGAIN; \
1332	\	572	\
1333	if (GIMME_V != G_VOID) \	573	if (GIMME_V != G_VOID) \
1334	XPUSHs (req_sv (req, AIO_REQ_KLASS));	574	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1335		575
1336	MODULE = IO::AIO PACKAGE = IO::AIO	576	MODULE = IO::AIO PACKAGE = IO::AIO
1337		577
1338	PROTOTYPES: ENABLE	578	PROTOTYPES: ENABLE
1339		579
1340	BOOT:	580	BOOT:
1341	{	581	{
		582	static const struct {
		583	const char *name;
		584	IV iv;
		585	} *civ, const_iv[] = {
		586	# define const_iv(name, value) { # name, (IV) value },
		587	# define const_eio(name) { # name, (IV) EIO_ ## name },
		588	const_iv (EXDEV , EXDEV)
		589	const_iv (ENOSYS , ENOSYS)
		590	const_iv (O_RDONLY, O_RDONLY)
		591	const_iv (O_WRONLY, O_WRONLY)
		592	const_iv (O_CREAT , O_CREAT)
		593	const_iv (O_TRUNC , O_TRUNC)
		594	#ifndef _WIN32
		595	const_iv (S_IFIFO , S_IFIFO)
		596	#endif
		597	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		598	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		599	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		600	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		601	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		602	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		603
		604	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		605	const_eio (SYNC_FILE_RANGE_WRITE)
		606	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		607
		608	const_eio (READDIR_DENTS)
		609	const_eio (READDIR_DIRS_FIRST)
		610	const_eio (READDIR_STAT_ORDER)
		611	const_eio (READDIR_FOUND_UNKNOWN)
		612
		613	const_eio (DT_UNKNOWN)
		614	const_eio (DT_FIFO)
		615	const_eio (DT_CHR)
		616	const_eio (DT_DIR)
		617	const_eio (DT_BLK)
		618	const_eio (DT_REG)
		619	const_eio (DT_LNK)
		620	const_eio (DT_SOCK)
		621	const_eio (DT_WHT)
		622	};
		623
1342	HV *stash = gv_stashpv ("IO::AIO", 1);	624	stash = gv_stashpv ("IO::AIO", 1);
1343		625
1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	626	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	627	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1351		628
1352	create_pipe ();	629	create_respipe ();
1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);	630
		631	if (eio_init (want_poll, done_poll) < 0)
		632	croak ("IO::AIO: unable to initialise eio library");
		633
		634	/* atfork child called in fifo order, so before eio's handler */
		635	X_THREAD_ATFORK (0, 0, atfork_child);
1354	}	636	}
1355		637
1356	void	638	void
1357	max_poll_reqs (int nreqs)	639	max_poll_reqs (int nreqs)
1358	PROTOTYPE: $	640	PROTOTYPE: $
1359	CODE:	641	CODE:
1360	max_poll_reqs = nreqs;	642	eio_set_max_poll_reqs (nreqs);
1361		643
1362	void	644	void
1363	max_poll_time (double nseconds)	645	max_poll_time (double nseconds)
1364	PROTOTYPE: $	646	PROTOTYPE: $
1365	CODE:	647	CODE:
1366	max_poll_time = nseconds * AIO_TICKS;	648	eio_set_max_poll_time (nseconds);
1367		649
1368	void	650	void
1369	min_parallel (int nthreads)	651	min_parallel (int nthreads)
1370	PROTOTYPE: $	652	PROTOTYPE: $
		653	CODE:
		654	eio_set_min_parallel (nthreads);
1371		655
1372	void	656	void
1373	max_parallel (int nthreads)	657	max_parallel (int nthreads)
1374	PROTOTYPE: $	658	PROTOTYPE: $
		659	CODE:
		660	eio_set_max_parallel (nthreads);
1375		661
1376	void	662	void
1377	max_idle (int nthreads)	663	max_idle (int nthreads)
1378	PROTOTYPE: $	664	PROTOTYPE: $
1379	CODE:	665	CODE:
1380	set_max_idle (nthreads);	666	eio_set_max_idle (nthreads);
1381		667
1382	int	668	void
1383	max_outstanding (int maxreqs)	669	max_outstanding (int maxreqs)
1384	PROTOTYPE: $	670	PROTOTYPE: $
1385	CODE:	671	CODE:
1386	RETVAL = max_outstanding;
1387	max_outstanding = maxreqs;	672	max_outstanding = maxreqs;
1388	OUTPUT:
1389	RETVAL
1390		673
1391	void	674	void
1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	675	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1393	PROTOTYPE: $$$;$	676	PROTOTYPE: $$$;$
1394	PPCODE:	677	PPCODE:
1395	{	678	{
1396	dREQ;	679	dREQ;
1397		680
1398	req->type = REQ_OPEN;	681	req->type = EIO_OPEN;
1399	req->sv1 = newSVsv (pathname);	682	req->sv1 = newSVsv (pathname);
1400	req->ptr1 = SvPVbyte_nolen (req->sv1);	683	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	req->int1 = flags;	684	req->int1 = flags;
1402	req->mode = mode;	685	req->int2 = mode;
1403		686
1404	REQ_SEND;	687	REQ_SEND;
		688	}
		689
		690	void
		691	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		692	PROTOTYPE: $;$
		693	ALIAS:
		694	aio_fsync = EIO_FSYNC
		695	aio_fdatasync = EIO_FDATASYNC
		696	PPCODE:
		697	{
		698	int fd = s_fileno_croak (fh, 0);
		699	dREQ;
		700
		701	req->type = ix;
		702	req->sv1 = newSVsv (fh);
		703	req->int1 = fd;
		704
		705	REQ_SEND (req);
		706	}
		707
		708	void
		709	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		710	PROTOTYPE: $$$$;$
		711	PPCODE:
		712	{
		713	int fd = s_fileno_croak (fh, 0);
		714	dREQ;
		715
		716	req->type = EIO_SYNC_FILE_RANGE;
		717	req->sv1 = newSVsv (fh);
		718	req->int1 = fd;
		719	req->offs = offset;
		720	req->size = nbytes;
		721	req->int2 = flags;
		722
		723	REQ_SEND (req);
1405	}	724	}
1406		725
1407	void	726	void
1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)	727	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1409	PROTOTYPE: $;$	728	PROTOTYPE: $;$
		729	PPCODE:
		730	{
		731	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		732	int fd = s_fileno_croak (fh, 0);
		733	dREQ;
		734
		735	if (close_pipe < 0)
		736	{
		737	int pipefd [2];
		738
		739	if (pipe (pipefd) < 0
		740	|| close (pipefd [1]) < 0
		741	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		742	abort (); /*D*/
		743
		744	close_pipe = pipefd [0];
		745	}
		746
		747	req->type = EIO_DUP2;
		748	req->int1 = close_pipe;
		749	req->sv2 = newSVsv (fh);
		750	req->int2 = fd;
		751
		752	REQ_SEND (req);
		753	}
		754
		755	void
		756	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1410	ALIAS:	757	ALIAS:
1411	aio_close = REQ_CLOSE
1412	aio_fsync = REQ_FSYNC
1413	aio_fdatasync = REQ_FDATASYNC
1414	PPCODE:
1415	{
1416	dREQ;
1417
1418	req->type = ix;
1419	req->sv1 = newSVsv (fh);
1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1421
1422	REQ_SEND (req);
1423	}
1424
1425	void
1426	aio_read (SV *fh, SV *offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)
1427	ALIAS:
1428	aio_read = REQ_READ	758	aio_read = EIO_READ
1429	aio_write = REQ_WRITE	759	aio_write = EIO_WRITE
1430	PROTOTYPE: $$$$$;$	760	PROTOTYPE: $$$$$;$
1431	PPCODE:	761	PPCODE:
1432	{	762	{
1433	STRLEN svlen;	763	STRLEN svlen;
		764	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1434	char *svptr = SvPVbyte (data, svlen);	765	char *svptr = SvPVbyte (data, svlen);
1435		766	UV len = SvUV (length);
1436	SvUPGRADE (data, SVt_PV);
1437	SvPOK_on (data);
1438		767
1439	if (dataoffset < 0)	768	if (dataoffset < 0)
1440	dataoffset += svlen;	769	dataoffset += svlen;
1441		770
1442	if (dataoffset < 0 || dataoffset > svlen)	771	if (dataoffset < 0 || dataoffset > svlen)
1443	croak ("data offset outside of string");	772	croak ("dataoffset outside of data scalar");
1444		773
1445	if (ix == REQ_WRITE)	774	if (ix == EIO_WRITE)
1446	{	775	{
1447	/* write: check length and adjust. */	776	/* write: check length and adjust. */
1448	if (length < 0 || length + dataoffset > svlen)	777	if (!SvOK (length) || len + dataoffset > svlen)
1449	length = svlen - dataoffset;	778	len = svlen - dataoffset;
1450	}	779	}
1451	else	780	else
1452	{	781	{
1453	/* read: grow scalar as necessary */	782	/* read: check type and grow scalar as necessary */
		783	SvUPGRADE (data, SVt_PV);
1454	svptr = SvGROW (data, length + dataoffset + 1);	784	svptr = SvGROW (data, len + dataoffset + 1);
1455	}	785	}
1456
1457	if (length < 0)
1458	croak ("length must not be negative");
1459		786
1460	{	787	{
1461	dREQ;	788	dREQ;
1462		789
1463	req->type = ix;	790	req->type = ix;
1464	req->sv1 = newSVsv (fh);	791	req->sv1 = newSVsv (fh);
1465	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	792	req->int1 = fd;
1466	: IoOFP (sv_2io (fh)));
1467	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	793	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1468	req->size = length;	794	req->size = len;
1469	req->sv2 = SvREFCNT_inc (data);	795	req->sv2 = SvREFCNT_inc (data);
1470	req->ptr1 = (char *)svptr + dataoffset;	796	req->ptr2 = (char *)svptr + dataoffset;
1471	req->stroffset = dataoffset;	797	req->stroffset = dataoffset;
1472		798
1473	if (!SvREADONLY (data))	799	if (!SvREADONLY (data))
1474	{	800	{
1475	SvREADONLY_on (data);	801	SvREADONLY_on (data);
…		…
1486	PPCODE:	812	PPCODE:
1487	{	813	{
1488	SV *data;	814	SV *data;
1489	dREQ;	815	dREQ;
1490		816
1491	data = newSV (NAME_MAX);
1492	SvPOK_on (data);
1493
1494	req->type = REQ_READLINK;	817	req->type = EIO_READLINK;
1495	req->sv1 = newSVsv (path);	818	req->sv1 = newSVsv (path);
1496	req->ptr2 = SvPVbyte_nolen (req->sv1);	819	req->ptr1 = SvPVbyte_nolen (req->sv1);
1497	req->sv2 = data;
1498	req->ptr1 = SvPVbyte_nolen (data);
1499		820
1500	REQ_SEND;	821	REQ_SEND;
1501	}	822	}
1502		823
1503	void	824	void
1504	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	825	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1505	PROTOTYPE: $$$$;$	826	PROTOTYPE: $$$$;$
1506	PPCODE:	827	PPCODE:
1507	{	828	{
		829	int ifd = s_fileno_croak (in_fh , 0);
		830	int ofd = s_fileno_croak (out_fh, 1);
1508	dREQ;	831	dREQ;
1509		832
1510	req->type = REQ_SENDFILE;	833	req->type = EIO_SENDFILE;
1511	req->sv1 = newSVsv (out_fh);	834	req->sv1 = newSVsv (out_fh);
1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	835	req->int1 = ofd;
1513	req->sv2 = newSVsv (in_fh);	836	req->sv2 = newSVsv (in_fh);
1514	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	837	req->int2 = ifd;
1515	req->offs = SvVAL64 (in_offset);	838	req->offs = in_offset;
1516	req->size = length;	839	req->size = length;
1517		840
1518	REQ_SEND;	841	REQ_SEND;
1519	}	842	}
1520		843
1521	void	844	void
1522	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	845	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1523	PROTOTYPE: $$$;$	846	PROTOTYPE: $$$;$
1524	PPCODE:	847	PPCODE:
1525	{	848	{
		849	int fd = s_fileno_croak (fh, 0);
1526	dREQ;	850	dREQ;
1527		851
1528	req->type = REQ_READAHEAD;	852	req->type = EIO_READAHEAD;
1529	req->sv1 = newSVsv (fh);	853	req->sv1 = newSVsv (fh);
1530	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	854	req->int1 = fd;
1531	req->offs = SvVAL64 (offset);	855	req->offs = offset;
1532	req->size = length;	856	req->size = length;
1533		857
1534	REQ_SEND;	858	REQ_SEND;
1535	}	859	}
1536		860
1537	void	861	void
1538	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	862	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1539	ALIAS:	863	ALIAS:
1540	aio_stat = REQ_STAT	864	aio_stat = EIO_STAT
1541	aio_lstat = REQ_LSTAT	865	aio_lstat = EIO_LSTAT
1542	PPCODE:	866	PPCODE:
1543	{	867	{
1544	dREQ;	868	dREQ;
1545		869
1546	req->ptr2 = malloc (sizeof (Stat_t));
1547	if (!req->ptr2)
1548	{
1549	req_destroy (req);
1550	croak ("out of memory during aio_stat statdata allocation");
1551	}
1552
1553	req->flags |= FLAG_PTR2_FREE;
1554	req->sv1 = newSVsv (fh_or_path);	870	req->sv1 = newSVsv (fh_or_path);
1555		871
1556	if (SvPOK (fh_or_path))	872	if (SvPOK (req->sv1))
1557	{	873	{
1558	req->type = ix;	874	req->type = ix;
1559	req->ptr1 = SvPVbyte_nolen (req->sv1);	875	req->ptr1 = SvPVbyte_nolen (req->sv1);
1560	}	876	}
1561	else	877	else
1562	{	878	{
1563	req->type = REQ_FSTAT;	879	req->type = EIO_FSTAT;
1564	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	880	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1565	}	881	}
1566		882
1567	REQ_SEND;	883	REQ_SEND;
1568	}	884	}
…		…
1575		891
1576	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	892	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1577	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	893	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1578	req->sv1 = newSVsv (fh_or_path);	894	req->sv1 = newSVsv (fh_or_path);
1579		895
1580	if (SvPOK (fh_or_path))	896	if (SvPOK (req->sv1))
1581	{	897	{
1582	req->type = REQ_UTIME;	898	req->type = EIO_UTIME;
1583	req->ptr1 = SvPVbyte_nolen (req->sv1);	899	req->ptr1 = SvPVbyte_nolen (req->sv1);
1584	}	900	}
1585	else	901	else
1586	{	902	{
1587	req->type = REQ_FUTIME;	903	req->type = EIO_FUTIME;
1588	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	904	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1589	}	905	}
1590		906
1591	REQ_SEND;	907	REQ_SEND;
1592	}	908	}
1593		909
1594	void	910	void
		911	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		912	PPCODE:
		913	{
		914	dREQ;
		915
		916	req->sv1 = newSVsv (fh_or_path);
		917	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		918
		919	if (SvPOK (req->sv1))
		920	{
		921	req->type = EIO_TRUNCATE;
		922	req->ptr1 = SvPVbyte_nolen (req->sv1);
		923	}
		924	else
		925	{
		926	req->type = EIO_FTRUNCATE;
		927	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		928	}
		929
		930	REQ_SEND;
		931	}
		932
		933	void
1595	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	934	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		935	ALIAS:
		936	aio_chmod = EIO_CHMOD
		937	aio_mkdir = EIO_MKDIR
1596	PPCODE:	938	PPCODE:
1597	{	939	{
1598	dREQ;	940	dREQ;
1599		941
1600	req->mode = mode;	942	req->int2 = mode;
1601	req->sv1 = newSVsv (fh_or_path);	943	req->sv1 = newSVsv (fh_or_path);
1602		944
1603	if (SvPOK (fh_or_path))	945	if (SvPOK (req->sv1))
1604	{	946	{
1605	req->type = REQ_CHMOD;	947	req->type = ix;
1606	req->ptr1 = SvPVbyte_nolen (req->sv1);	948	req->ptr1 = SvPVbyte_nolen (req->sv1);
1607	}	949	}
1608	else	950	else
1609	{	951	{
1610	req->type = REQ_FCHMOD;	952	req->type = EIO_FCHMOD;
1611	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	953	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1612	}	954	}
1613		955
1614	REQ_SEND;	956	REQ_SEND;
1615	}	957	}
…		…
1622		964
1623	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	965	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1624	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	966	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1625	req->sv1 = newSVsv (fh_or_path);	967	req->sv1 = newSVsv (fh_or_path);
1626		968
1627	if (SvPOK (fh_or_path))	969	if (SvPOK (req->sv1))
1628	{	970	{
1629	req->type = REQ_CHOWN;	971	req->type = EIO_CHOWN;
1630	req->ptr1 = SvPVbyte_nolen (req->sv1);	972	req->ptr1 = SvPVbyte_nolen (req->sv1);
1631	}	973	}
1632	else	974	else
1633	{	975	{
1634	req->type = REQ_FCHOWN;	976	req->type = EIO_FCHOWN;
1635	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	977	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1636	}	978	}
1637		979
1638	REQ_SEND;	980	REQ_SEND;
		981	}
		982
		983	void
		984	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		985	PPCODE:
		986	{
		987	dREQ;
		988
		989	req->type = EIO_READDIR;
		990	req->sv1 = newSVsv (pathname);
		991	req->ptr1 = SvPVbyte_nolen (req->sv1);
		992	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		993
		994	if (flags & EIO_READDIR_DENTS)
		995	req->int1 |= EIO_READDIR_CUSTOM2;
		996
		997	REQ_SEND;
1639	}	998	}
1640		999
1641	void	1000	void
1642	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1001	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1643	ALIAS:	1002	ALIAS:
1644	aio_unlink = REQ_UNLINK	1003	aio_unlink = EIO_UNLINK
1645	aio_rmdir = REQ_RMDIR	1004	aio_rmdir = EIO_RMDIR
1646	aio_readdir = REQ_READDIR	1005	aio_readdir = EIO_READDIR
1647	PPCODE:	1006	PPCODE:
1648	{	1007	{
1649	dREQ;	1008	dREQ;
1650		1009
1651	req->type = ix;	1010	req->type = ix;
…		…
1654		1013
1655	REQ_SEND;	1014	REQ_SEND;
1656	}	1015	}
1657		1016
1658	void	1017	void
1659	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1660	PPCODE:
1661	{
1662	dREQ;
1663
1664	req->type = REQ_MKDIR;
1665	req->sv1 = newSVsv (pathname);
1666	req->ptr1 = SvPVbyte_nolen (req->sv1);
1667	req->mode = mode;
1668
1669	REQ_SEND;
1670	}
1671
1672	void
1673	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1018	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1674	ALIAS:	1019	ALIAS:
1675	aio_link = REQ_LINK	1020	aio_link = EIO_LINK
1676	aio_symlink = REQ_SYMLINK	1021	aio_symlink = EIO_SYMLINK
1677	aio_rename = REQ_RENAME	1022	aio_rename = EIO_RENAME
1678	PPCODE:	1023	PPCODE:
1679	{	1024	{
1680	dREQ;	1025	dREQ;
1681		1026
1682	req->type = ix;	1027	req->type = ix;
1683	req->sv2 = newSVsv (oldpath);	1028	req->sv1 = newSVsv (oldpath);
		1029	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1030	req->sv2 = newSVsv (newpath);
1684	req->ptr2 = SvPVbyte_nolen (req->sv2);	1031	req->ptr2 = SvPVbyte_nolen (req->sv2);
1685	req->sv1 = newSVsv (newpath);
1686	req->ptr1 = SvPVbyte_nolen (req->sv1);
1687		1032
1688	REQ_SEND;	1033	REQ_SEND;
1689	}	1034	}
1690		1035
1691	void	1036	void
1692	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1037	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1693	PPCODE:	1038	PPCODE:
1694	{	1039	{
1695	dREQ;	1040	dREQ;
1696		1041
1697	req->type = REQ_MKNOD;	1042	req->type = EIO_MKNOD;
1698	req->sv1 = newSVsv (pathname);	1043	req->sv1 = newSVsv (pathname);
1699	req->ptr1 = SvPVbyte_nolen (req->sv1);	1044	req->ptr1 = SvPVbyte_nolen (req->sv1);
1700	req->mode = (mode_t)mode;	1045	req->int2 = (mode_t)mode;
1701	req->offs = dev;	1046	req->offs = dev;
1702		1047
1703	REQ_SEND;	1048	REQ_SEND;
1704	}	1049	}
1705		1050
…		…
1707	aio_busy (double delay, SV *callback=&PL_sv_undef)	1052	aio_busy (double delay, SV *callback=&PL_sv_undef)
1708	PPCODE:	1053	PPCODE:
1709	{	1054	{
1710	dREQ;	1055	dREQ;
1711		1056
1712	req->type = REQ_BUSY;	1057	req->type = EIO_BUSY;
1713	req->nv1 = delay < 0. ? 0. : delay;	1058	req->nv1 = delay < 0. ? 0. : delay;
1714		1059
1715	REQ_SEND;	1060	REQ_SEND;
1716	}	1061	}
1717		1062
…		…
1720	PROTOTYPE: ;$	1065	PROTOTYPE: ;$
1721	PPCODE:	1066	PPCODE:
1722	{	1067	{
1723	dREQ;	1068	dREQ;
1724		1069
1725	req->type = REQ_GROUP;	1070	req->type = EIO_GROUP;
1726		1071
1727	req_send (req);	1072	req_submit (req);
1728	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1073	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1729	}	1074	}
1730		1075
1731	void	1076	void
1732	aio_nop (SV *callback=&PL_sv_undef)	1077	aio_nop (SV *callback=&PL_sv_undef)
		1078	ALIAS:
		1079	aio_nop = EIO_NOP
		1080	aio_sync = EIO_SYNC
1733	PPCODE:	1081	PPCODE:
1734	{	1082	{
1735	dREQ;	1083	dREQ;
1736		1084
1737	req->type = REQ_NOP;	1085	req->type = ix;
1738		1086
1739	REQ_SEND;	1087	REQ_SEND;
1740	}	1088	}
1741		1089
1742	int	1090	int
1743	aioreq_pri (int pri = 0)	1091	aioreq_pri (int pri = 0)
1744	PROTOTYPE: ;$	1092	PROTOTYPE: ;$
1745	CODE:	1093	CODE:
1746	RETVAL = next_pri - PRI_BIAS;	1094	RETVAL = next_pri;
1747	if (items > 0)	1095	if (items > 0)
1748	{	1096	{
1749	if (pri < PRI_MIN) pri = PRI_MIN;	1097	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1750	if (pri > PRI_MAX) pri = PRI_MAX;	1098	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1751	next_pri = pri + PRI_BIAS;	1099	next_pri = pri;
1752	}	1100	}
1753	OUTPUT:	1101	OUTPUT:
1754	RETVAL	1102	RETVAL
1755		1103
1756	void	1104	void
1757	aioreq_nice (int nice = 0)	1105	aioreq_nice (int nice = 0)
1758	CODE:	1106	CODE:
1759	nice = next_pri - nice;	1107	nice = next_pri - nice;
1760	if (nice < PRI_MIN) nice = PRI_MIN;	1108	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1761	if (nice > PRI_MAX) nice = PRI_MAX;	1109	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1762	next_pri = nice + PRI_BIAS;	1110	next_pri = nice;
1763		1111
1764	void	1112	void
1765	flush ()	1113	flush ()
1766	PROTOTYPE:	1114	PROTOTYPE:
1767	CODE:	1115	CODE:
1768	while (nreqs)	1116	while (eio_nreqs ())
1769	{	1117	{
1770	poll_wait ();	1118	poll_wait ();
1771	poll_cb ();	1119	poll_cb ();
1772	}	1120	}
1773		1121
…		…
1800	poll_wait()	1148	poll_wait()
1801	PROTOTYPE:	1149	PROTOTYPE:
1802	CODE:	1150	CODE:
1803	poll_wait ();	1151	poll_wait ();
1804		1152
1805	void
1806	setsig (int signum = SIGIO)
1807	PROTOTYPE: ;$
1808	CODE:
1809	{
1810	if (block_sig_level)
1811	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1812
1813	LOCK (reslock);
1814	main_tid = pthread_self ();
1815	main_sig = signum;
1816	UNLOCK (reslock);
1817
1818	if (main_sig && npending)
1819	pthread_kill (main_tid, main_sig);
1820	}
1821
1822	void
1823	aio_block (SV *cb)
1824	PROTOTYPE: &
1825	PPCODE:
1826	{
1827	int count;
1828
1829	block_sig ();
1830	PUSHMARK (SP);
1831	PUTBACK;
1832	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1833	SPAGAIN;
1834	unblock_sig ();
1835
1836	if (SvTRUE (ERRSV))
1837	croak (0);
1838
1839	XSRETURN (count);
1840	}
1841
1842	int	1153	int
1843	nreqs()	1154	nreqs()
1844	PROTOTYPE:	1155	PROTOTYPE:
1845	CODE:	1156	CODE:
1846	RETVAL = nreqs;	1157	RETVAL = eio_nreqs ();
1847	OUTPUT:	1158	OUTPUT:
1848	RETVAL	1159	RETVAL
1849		1160
1850	int	1161	int
1851	nready()	1162	nready()
1852	PROTOTYPE:	1163	PROTOTYPE:
1853	CODE:	1164	CODE:
1854	RETVAL = get_nready ();	1165	RETVAL = eio_nready ();
1855	OUTPUT:	1166	OUTPUT:
1856	RETVAL	1167	RETVAL
1857		1168
1858	int	1169	int
1859	npending()	1170	npending()
1860	PROTOTYPE:	1171	PROTOTYPE:
1861	CODE:	1172	CODE:
1862	RETVAL = get_npending ();	1173	RETVAL = eio_npending ();
1863	OUTPUT:	1174	OUTPUT:
1864	RETVAL	1175	RETVAL
1865		1176
1866	int	1177	int
1867	nthreads()	1178	nthreads()
1868	PROTOTYPE:	1179	PROTOTYPE:
1869	CODE:	1180	CODE:
1870	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1181	RETVAL = eio_nthreads ();
1871	RETVAL = started;
1872	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1873	OUTPUT:	1182	OUTPUT:
1874	RETVAL	1183	RETVAL
1875		1184
		1185	int
		1186	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1187	PROTOTYPE: $$$$
		1188	CODE:
		1189	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1190	RETVAL = posix_fadvise (fh, offset, length, advice);
		1191	#else
		1192	RETVAL = errno = ENOSYS;
		1193	#endif
		1194	OUTPUT:
		1195	RETVAL
		1196
		1197	ssize_t
		1198	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1199	PROTOTYPE: $$$$
		1200	CODE:
		1201	eio_sendfile_sync (ofh, ifh, offset, count);
		1202
		1203	void _on_next_submit (SV *cb)
		1204	CODE:
		1205	SvREFCNT_dec (on_next_submit);
		1206	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1207
1876	PROTOTYPES: DISABLE	1208	PROTOTYPES: DISABLE
1877		1209
1878	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1210	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1879		1211
1880	void	1212	void
1881	cancel (aio_req_ornot req)	1213	cancel (aio_req_ornot req)
1882	CODE:	1214	CODE:
1883	req_cancel (req);	1215	eio_cancel (req);
1884		1216
1885	void	1217	void
1886	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1218	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1887	CODE:	1219	PPCODE:
		1220	{
		1221	if (GIMME_V != G_VOID)
		1222	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1223
		1224	if (items > 1)
		1225	{
		1226	SV *cb_cv = get_cb (callback);
		1227
1888	SvREFCNT_dec (req->callback);	1228	SvREFCNT_dec (req->callback);
1889	req->callback = newSVsv (callback);	1229	req->callback = SvREFCNT_inc (cb_cv);
		1230	}
		1231	}
1890		1232
1891	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1233	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1892		1234
1893	void	1235	void
1894	add (aio_req grp, ...)	1236	add (aio_req grp, ...)
1895	PPCODE:	1237	PPCODE:
1896	{	1238	{
1897	int i;	1239	int i;
1898	aio_req req;
1899
1900	if (main_sig && !block_sig_level)
1901	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1902		1240
1903	if (grp->int1 == 2)	1241	if (grp->int1 == 2)
1904	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1242	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1905		1243
1906	for (i = 1; i < items; ++i )	1244	for (i = 1; i < items; ++i )
1907	{	1245	{
		1246	aio_req req;
		1247
1908	if (GIMME_V != G_VOID)	1248	if (GIMME_V != G_VOID)
1909	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1249	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1910		1250
1911	req = SvAIO_REQ (ST (i));	1251	req = SvAIO_REQ (ST (i));
1912		1252
1913	if (req)	1253	if (req)
1914	{	1254	eio_grp_add (grp, req);
1915	++grp->size;
1916	req->grp = grp;
1917
1918	req->grp_prev = 0;
1919	req->grp_next = grp->grp_first;
1920
1921	if (grp->grp_first)
1922	grp->grp_first->grp_prev = req;
1923
1924	grp->grp_first = req;
1925	}
1926	}	1255	}
1927	}	1256	}
1928		1257
1929	void	1258	void
1930	cancel_subs (aio_req_ornot req)	1259	cancel_subs (aio_req_ornot req)
…		…
1939	AV *av;	1268	AV *av;
1940		1269
1941	grp->errorno = errno;	1270	grp->errorno = errno;
1942		1271
1943	av = newAV ();	1272	av = newAV ();
		1273	av_extend (av, items - 1);
1944		1274
1945	for (i = 1; i < items; ++i )	1275	for (i = 1; i < items; ++i )
1946	av_push (av, newSVsv (ST (i)));	1276	av_push (av, newSVsv (ST (i)));
1947		1277
1948	SvREFCNT_dec (grp->sv1);	1278	SvREFCNT_dec (grp->sv1);
…		…
1955	grp->errorno = errorno;	1285	grp->errorno = errorno;
1956		1286
1957	void	1287	void
1958	limit (aio_req grp, int limit)	1288	limit (aio_req grp, int limit)
1959	CODE:	1289	CODE:
1960	grp->int2 = limit;	1290	eio_grp_limit (grp, limit);
1961	aio_grp_feed (grp);
1962		1291
1963	void	1292	void
1964	feed (aio_req grp, SV *callback=&PL_sv_undef)	1293	feed (aio_req grp, SV *callback=&PL_sv_undef)
1965	CODE:	1294	CODE:
1966	{	1295	{
1967	SvREFCNT_dec (grp->sv2);	1296	SvREFCNT_dec (grp->sv2);
1968	grp->sv2 = newSVsv (callback);	1297	grp->sv2 = newSVsv (callback);
		1298	grp->feed = aio_grp_feed;
1969		1299
1970	if (grp->int2 <= 0)	1300	if (grp->int2 <= 0)
1971	grp->int2 = 2;	1301	grp->int2 = 2;
1972		1302
1973	aio_grp_feed (grp);	1303	eio_grp_limit (grp, grp->int2);
1974	}	1304	}
1975		1305

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