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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.75 by root, Thu Oct 26 06:44:48 2006 UTC vs.
Revision 1.128 by root, Tue Sep 30 14:07:59 2008 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"
17
18	#include <pthread.h>
19
20	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
21	#include <errno.h>	11	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	12	#include <sys/types.h>
25	#include <sys/stat.h>	13	#include <sys/stat.h>
26	#include <limits.h>	14	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	15	#include <fcntl.h>
29	#include <signal.h>
30	#include <sched.h>	16	#include <sched.h>
31		17
32	#if HAVE_SENDFILE	18	/* perl namespace pollution */
33	# if __linux	19	#undef VERSION
34	# include <sys/sendfile.h>	20
35	# elif __freebsd	21	#ifdef _WIN32
36	# include <sys/socket.h>	22
37	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
38	# elif __hpux	24	# undef malloc
39	# include <sys/socket.h>	25	# undef free
40	# elif __solaris /* not yet */	26
41	# 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
42	# else	59	#else
43	# error sendfile support requested but not available	60
44	# 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
45	#endif	68	#endif
46		69
47	/* used for struct dirent, AIX doesn't provide it */	70	/* perl stupidly overrides readdir and maybe others */
48	#ifndef NAME_MAX	71	/* with thread-unsafe versions, imagine that :( */
49	# define NAME_MAX 4096	72	#undef readdir
		73	#undef opendir
		74	#undef closedir
		75
		76	#define EIO_STRUCT_STAT Stat_t
		77
		78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define SvVAL64 SvIV
		81	#else
		82	# define SvVAL64 SvNV
50	#endif	83	#endif
51		84
52	#ifndef PTHREAD_STACK_MIN	85	/*****************************************************************************/
53	/* care for broken platforms, e.g. windows */	86
54	# define PTHREAD_STACK_MIN 16384	87	#if __GNUC__ >= 3
		88	# define expect(expr,value) __builtin_expect ((expr),(value))
		89	#else
		90	# define expect(expr,value) (expr)
55	#endif	91	#endif
56		92
57	#if __ia64	93	#define expect_false(expr) expect ((expr) != 0, 0)
58	# define STACKSIZE 65536	94	#define expect_true(expr) expect ((expr) != 0, 1)
59	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
60	# define STACKSIZE PTHREAD_STACK_MIN
61	#else
62	# define STACKSIZE 16384
63	#endif
64		95
65	/* buffer size for various temporary buffers */	96	/*****************************************************************************/
66	#define AIO_BUFSIZE 65536
67		97
68	#define dBUF \	98	static HV *stash;
69	char *aio_buf; \	99	typedef SV SV8; /* byte-sv, used for argument-checking */
70	LOCK (wrklock); \
71	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
72	UNLOCK (wrklock); \
73	if (!aio_buf) \
74	return -1;
75
76	enum {
77	REQ_QUIT,
78	REQ_OPEN, REQ_CLOSE,
79	REQ_READ, REQ_WRITE, REQ_READAHEAD,
80	REQ_SENDFILE,
81	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
82	REQ_FSYNC, REQ_FDATASYNC,
83	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
84	REQ_READDIR,
85	REQ_LINK, REQ_SYMLINK,
86	REQ_GROUP, REQ_NOP,
87	REQ_BUSY,
88	};
89		100
90	#define AIO_REQ_KLASS "IO::AIO::REQ"	101	#define AIO_REQ_KLASS "IO::AIO::REQ"
91	#define AIO_GRP_KLASS "IO::AIO::GRP"	102	#define AIO_GRP_KLASS "IO::AIO::GRP"
92		103
93	typedef struct aio_cb	104	#define EIO_REQ_MEMBERS \
94	{
95	struct aio_cb *volatile next;
96
97	SV *data, *callback;	105	SV *callback; \
98	SV *fh, *fh2;	106	SV *sv1, *sv2; \
99	void *dataptr, *data2ptr;
100	Stat_t *statdata;
101	off_t offset;
102	size_t length;
103	ssize_t result;
104
105	STRLEN dataoffset;	107	STRLEN stroffset; \
106	int type;	108	SV *self;
107	int fd, fd2;
108	int errorno;
109	mode_t mode; /* open */
110		109
111	unsigned char flags;	110	#define EIO_NO_WRAPPERS 1
112	unsigned char pri;
113		111
114	SV *self; /* the perl counterpart of this request, if any */	112	#include "libeio/eio.h"
115	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	113
116	} aio_cb;	114	static int req_invoke (eio_req *req);
		115	#define EIO_FINISH(req) req_invoke (req)
		116	static void aio_grp_feed (eio_req *grp);
		117	#define EIO_FEED(req) aio_grp_feed (req)
		118	static void req_destroy (eio_req *grp);
		119	#define EIO_DESTROY(req) req_destroy (req)
117		120
118	enum {	121	enum {
119	FLAG_CANCELLED = 0x01,	122	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
120	};	123	};
121		124
		125	#include "libeio/eio.c"
		126
122	typedef aio_cb *aio_req;	127	typedef eio_req *aio_req;
123	typedef aio_cb *aio_req_ornot;	128	typedef eio_req *aio_req_ornot;
124		129
125	enum {	130	static SV *on_next_submit;
126	PRI_MIN = -4,	131	static int next_pri = EIO_PRI_DEFAULT;
127	PRI_MAX = 4,	132	static int max_outstanding;
128		133
129	DEFAULT_PRI = 0,	134	static int respipe_osf [2], respipe [2] = { -1, -1 };
130	PRI_BIAS = -PRI_MIN,
131	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
132	};
133		135
134	static int next_pri = DEFAULT_PRI + PRI_BIAS;
135
136	static int started, wanted;
137	static volatile int nreqs;
138	static int respipe [2];
139
140	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
141	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
142	#else
143	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
144	#endif
145
146	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
147	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
148
149	/* worker threasd management */
150	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
151
152	typedef struct worker {
153	/* locked by wrklock */
154	struct worker *prev, *next;
155
156	pthread_t tid;
157
158	/* locked by reslock, reqlock or wrklock */
159	aio_req req; /* currently processed request */
160	void *dbuf;
161	DIR *dirp;
162	} worker;
163
164	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
165
166	static void worker_clear (worker *wrk)
167	{
168	if (wrk->dirp)
169	{
170	closedir (wrk->dirp);
171	wrk->dirp = 0;
172	}
173
174	if (wrk->dbuf)
175	{
176	free (wrk->dbuf);
177	wrk->dbuf = 0;
178	}
179	}
180
181	static void worker_free (worker *wrk)
182	{
183	wrk->next->prev = wrk->prev;
184	wrk->prev->next = wrk->next;
185
186	free (wrk);
187	}
188
189	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
190	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
191	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
192
193	/*
194	* a somewhat faster data structure might be nice, but
195	* with 8 priorities this actually needs <20 insns
196	* per shift, the most expensive operation.
197	*/
198	typedef struct {
199	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
200	int size;
201	} reqq;
202
203	static reqq req_queue;
204	static reqq res_queue;
205
206	int reqq_push (reqq *q, aio_req req)
207	{
208	int pri = req->pri;
209	req->next = 0;
210
211	if (q->qe[pri])
212	{
213	q->qe[pri]->next = req;
214	q->qe[pri] = req;
215	}
216	else
217	q->qe[pri] = q->qs[pri] = req;
218
219	return q->size++;
220	}
221
222	aio_req reqq_shift (reqq *q)
223	{
224	int pri;
225
226	if (!q->size)
227	return 0;
228
229	--q->size;
230
231	for (pri = NUM_PRI; pri--; )
232	{
233	aio_req req = q->qs[pri];
234
235	if (req)
236	{
237	if (!(q->qs[pri] = req->next))
238	q->qe[pri] = 0;
239
240	return req;
241	}
242	}
243
244	abort ();
245	}
246
247	static int poll_cb ();
248	static void req_invoke (aio_req req);
249	static void req_free (aio_req req);	136	static void req_destroy (aio_req req);
250	static void req_cancel (aio_req req);	137	static void req_cancel (aio_req req);
		138
		139	static void want_poll (void)
		140	{
		141	/* write a dummy byte to the pipe so fh becomes ready */
		142	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		143	}
		144
		145	static void done_poll (void)
		146	{
		147	/* read any signals sent by the worker threads */
		148	char buf [4];
		149	while (respipe_read (respipe [0], buf, 4) == 4)
		150	;
		151	}
251		152
252	/* must be called at most once */	153	/* must be called at most once */
253	static SV *req_sv (aio_req req, const char *klass)	154	static SV *req_sv (aio_req req, const char *klass)
254	{	155	{
255	if (!req->self)	156	if (!req->self)
…		…
273	return mg ? (aio_req)mg->mg_ptr : 0;	174	return mg ? (aio_req)mg->mg_ptr : 0;
274	}	175	}
275		176
276	static void aio_grp_feed (aio_req grp)	177	static void aio_grp_feed (aio_req grp)
277	{	178	{
278	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	179	if (grp->sv2 && SvOK (grp->sv2))
279	{	180	{
280	int old_len = grp->length;
281
282	if (grp->fh2 && SvOK (grp->fh2))
283	{
284	dSP;	181	dSP;
285		182
286	ENTER;	183	ENTER;
287	SAVETMPS;	184	SAVETMPS;
288	PUSHMARK (SP);	185	PUSHMARK (SP);
289	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	186	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
290	PUTBACK;	187	PUTBACK;
291	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	188	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
292	SPAGAIN;	189	SPAGAIN;
293	FREETMPS;	190	FREETMPS;
294	LEAVE;	191	LEAVE;
295	}
296
297	/* stop if no progress has been made */
298	if (old_len == grp->length)
299	{
300	SvREFCNT_dec (grp->fh2);
301	grp->fh2 = 0;
302	break;
303	}
304	}	192	}
305	}	193	}
306		194
307	static void aio_grp_dec (aio_req grp)	195	static void req_submit (eio_req *req)
308	{	196	{
309	--grp->length;	197	eio_submit (req);
310		198
311	/* call feeder, if applicable */	199	if (expect_false (on_next_submit))
312	aio_grp_feed (grp);
313
314	/* finish, if done */
315	if (!grp->length && grp->fd)
316	{	200	{
317	req_invoke (grp);	201	dSP;
318	req_free (grp);	202	SV *cb = sv_2mortal (on_next_submit);
		203
		204	on_next_submit = 0;
		205
		206	PUSHMARK (SP);
		207	PUTBACK;
		208	call_sv (cb, G_DISCARD | G_EVAL);
319	}	209	}
320	}	210	}
321		211
322	static void poll_wait ()	212	static int req_invoke (eio_req *req)
323	{	213	{
324	fd_set rfd;	214	dSP;
325		215
326	while (nreqs)	216	if (req->flags & FLAG_SV2_RO_OFF)
		217	SvREADONLY_off (req->sv2);
		218
		219	if (!EIO_CANCELLED (req) && req->callback)
327	{	220	{
328	int size;
329	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
330	LOCK (reslock);
331	#endif
332	size = res_queue.size;
333	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
334	UNLOCK (reslock);
335	#endif
336
337	if (size)
338	return;
339
340	FD_ZERO(&rfd);
341	FD_SET(respipe [0], &rfd);
342
343	select (respipe [0] + 1, &rfd, 0, 0, 0);
344	}
345	}
346
347	static void req_invoke (aio_req req)
348	{
349	dSP;
350
351	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
352	{
353	errno = req->errorno;
354
355	ENTER;	221	ENTER;
356	SAVETMPS;	222	SAVETMPS;
357	PUSHMARK (SP);	223	PUSHMARK (SP);
358	EXTEND (SP, 1);	224	EXTEND (SP, 1);
359		225
360	switch (req->type)	226	switch (req->type)
361	{	227	{
362	case REQ_READDIR:	228	case EIO_READDIR:
363	{	229	{
364	SV *rv = &PL_sv_undef;	230	SV *rv = &PL_sv_undef;
365		231
366	if (req->result >= 0)	232	if (req->result >= 0)
367	{	233	{
368	int i;	234	int i;
369	char *buf = req->data2ptr;	235	char *buf = req->ptr2;
370	AV *av = newAV ();	236	AV *av = newAV ();
371		237
372	av_extend (av, req->result - 1);	238	av_extend (av, req->result - 1);
373		239
374	for (i = 0; i < req->result; ++i)	240	for (i = 0; i < req->result; ++i)
…		…
384		250
385	PUSHs (rv);	251	PUSHs (rv);
386	}	252	}
387	break;	253	break;
388		254
389	case REQ_OPEN:	255	case EIO_OPEN:
390	{	256	{
391	/* convert fd to fh */	257	/* convert fd to fh */
392	SV *fh;	258	SV *fh = &PL_sv_undef;
393		259
394	PUSHs (sv_2mortal (newSViv (req->result)));	260	if (req->result >= 0)
395	PUTBACK;	261	{
396	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	262	GV *gv = (GV *)sv_newmortal ();
397	SPAGAIN;	263	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		264	char sym [64];
		265	int symlen;
		266
		267	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		268	gv_init (gv, stash, sym, symlen, 0);
398		269
399	fh = SvREFCNT_inc (POPs);	270	symlen = snprintf (
		271	sym,
		272	sizeof (sym),
		273	"%s&=%d",
		274	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		275	req->result
		276	);
400		277
		278	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		279	fh = (SV *)gv;
		280	}
		281
401	PUSHMARK (SP);	282	PUSHs (fh);
402	XPUSHs (sv_2mortal (fh));
403	}	283	}
404	break;	284	break;
405		285
406	case REQ_GROUP:	286	case EIO_GROUP:
407	req->fd = 2; /* mark group as finished */	287	req->int1 = 2; /* mark group as finished */
408		288
409	if (req->data)	289	if (req->sv1)
410	{	290	{
411	int i;	291	int i;
412	AV *av = (AV *)req->data;	292	AV *av = (AV *)req->sv1;
413		293
414	EXTEND (SP, AvFILL (av) + 1);	294	EXTEND (SP, AvFILL (av) + 1);
415	for (i = 0; i <= AvFILL (av); ++i)	295	for (i = 0; i <= AvFILL (av); ++i)
416	PUSHs (*av_fetch (av, i, 0));	296	PUSHs (*av_fetch (av, i, 0));
417	}	297	}
418	break;	298	break;
419		299
420	case REQ_NOP:	300	case EIO_NOP:
421	case REQ_BUSY:	301	case EIO_BUSY:
422	break;	302	break;
		303
		304	case EIO_READLINK:
		305	if (req->result > 0)
		306	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		307	break;
		308
		309	case EIO_STAT:
		310	case EIO_LSTAT:
		311	case EIO_FSTAT:
		312	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		313	PL_laststatval = req->result;
		314	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		315	PUSHs (sv_2mortal (newSViv (req->result)));
		316	break;
		317
		318	case EIO_READ:
		319	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		320	*SvEND (req->sv2) = 0;
		321	PUSHs (sv_2mortal (newSViv (req->result)));
		322	break;
		323
		324	case EIO_DUP2:
		325	if (req->result > 0)
		326	req->result = 0;
		327	/* FALLTHROUGH */
423		328
424	default:	329	default:
425	PUSHs (sv_2mortal (newSViv (req->result)));	330	PUSHs (sv_2mortal (newSViv (req->result)));
426	break;	331	break;
427	}	332	}
428		333
		334	errno = req->errorno;
429		335
430	PUTBACK;	336	PUTBACK;
431	call_sv (req->callback, G_VOID | G_EVAL);	337	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
432	SPAGAIN;	338	SPAGAIN;
433		339
434	FREETMPS;	340	FREETMPS;
435	LEAVE;	341	LEAVE;
		342
		343	PUTBACK;
436	}	344	}
437		345
438	if (req->grp)	346	return !!SvTRUE (ERRSV);
439	{
440	aio_req grp = req->grp;
441
442	/* unlink request */
443	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
444	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
445
446	if (grp->grp_first == req)
447	grp->grp_first = req->grp_next;
448
449	aio_grp_dec (grp);
450	}
451
452	if (SvTRUE (ERRSV))
453	{
454	req_free (req);
455	croak (0);
456	}
457	}	347	}
458		348
459	static void req_free (aio_req req)	349	static void req_destroy (aio_req req)
460	{	350	{
461	if (req->self)	351	if (req->self)
462	{	352	{
463	sv_unmagic (req->self, PERL_MAGIC_ext);	353	sv_unmagic (req->self, PERL_MAGIC_ext);
464	SvREFCNT_dec (req->self);	354	SvREFCNT_dec (req->self);
465	}	355	}
466		356
467	SvREFCNT_dec (req->data);
468	SvREFCNT_dec (req->fh);	357	SvREFCNT_dec (req->sv1);
469	SvREFCNT_dec (req->fh2);	358	SvREFCNT_dec (req->sv2);
470	SvREFCNT_dec (req->callback);	359	SvREFCNT_dec (req->callback);
471	Safefree (req->statdata);
472
473	if (req->type == REQ_READDIR)
474	free (req->data2ptr);
475		360
476	Safefree (req);	361	Safefree (req);
477	}	362	}
478		363
479	static void req_cancel_subs (aio_req grp)	364	static void req_cancel_subs (aio_req grp)
480	{	365	{
481	aio_req sub;	366	aio_req sub;
482		367
483	if (grp->type != REQ_GROUP)	368	if (grp->type != EIO_GROUP)
484	return;	369	return;
485		370
486	SvREFCNT_dec (grp->fh2);	371	SvREFCNT_dec (grp->sv2);
487	grp->fh2 = 0;	372	grp->sv2 = 0;
488		373
489	for (sub = grp->grp_first; sub; sub = sub->grp_next)	374	eio_grp_cancel (grp);
490	req_cancel (sub);
491	}	375	}
492		376
493	static void req_cancel (aio_req req)	377	#ifdef USE_SOCKETS_AS_HANDLES
494	{	378	# define TO_SOCKET(x) (win32_get_osfhandle (x))
495	req->flags |= FLAG_CANCELLED;	379	#else
		380	# define TO_SOCKET(x) (x)
		381	#endif
496		382
497	req_cancel_subs (req);	383	static void
498	}	384	create_respipe (void)
		385	{
		386	int old_readfd = respipe [0];
499		387
		388	if (respipe [1] >= 0)
		389	respipe_close (TO_SOCKET (respipe [1]));
		390
		391	#ifdef _WIN32
		392	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		393	#else
		394	if (pipe (respipe))
		395	#endif
		396	croak ("unable to initialize result pipe");
		397
		398	if (old_readfd >= 0)
		399	{
		400	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		401	croak ("unable to initialize result pipe(2)");
		402
		403	respipe_close (respipe [0]);
		404	respipe [0] = old_readfd;
		405	}
		406
		407	#ifdef _WIN32
		408	int arg = 1;
		409	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		410	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		411	#else
		412	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		413	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		414	#endif
		415	croak ("unable to initialize result pipe(3)");
		416
		417	respipe_osf [0] = TO_SOCKET (respipe [0]);
		418	respipe_osf [1] = TO_SOCKET (respipe [1]);
		419	}
		420
		421	static void poll_wait (void)
		422	{
		423	fd_set rfd;
		424
		425	while (eio_nreqs ())
		426	{
		427	int size;
		428
		429	X_LOCK (reslock);
		430	size = res_queue.size;
		431	X_UNLOCK (reslock);
		432
		433	if (size)
		434	return;
		435
		436	etp_maybe_start_thread ();
		437
		438	FD_ZERO (&rfd);
		439	FD_SET (respipe [0], &rfd);
		440
		441	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		442	}
		443	}
		444
500	static int poll_cb ()	445	static int poll_cb (void)
501	{	446	{
502	dSP;
503	int count = 0;
504	int do_croak = 0;
505	aio_req req;
506
507	for (;;)	447	for (;;)
508	{	448	{
509	LOCK (reslock);	449	int res = eio_poll ();
510	req = reqq_shift (&res_queue);
511		450
512	if (req)	451	if (res > 0)
513	{
514	if (!res_queue.size)
515	{
516	/* read any signals sent by the worker threads */
517	char buf [32];
518	while (read (respipe [0], buf, 32) == 32)
519	;
520	}
521	}
522
523	UNLOCK (reslock);
524
525	if (!req)
526	break;	452	croak (0);
527		453
528	--nreqs;	454	if (!max_outstanding || max_outstanding > eio_nreqs ())
		455	return res;
529		456
530	if (req->type == REQ_QUIT)	457	poll_wait ();
531	started--;
532	else if (req->type == REQ_GROUP && req->length)
533	{
534	req->fd = 1; /* mark request as delayed */
535	continue;
536	}
537	else
538	{
539	if (req->type == REQ_READ)
540	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
541
542	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
543	SvREADONLY_off (req->data);
544
545	if (req->statdata)
546	{
547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
548	PL_laststatval = req->result;
549	PL_statcache = *(req->statdata);
550	}
551
552	req_invoke (req);
553
554	count++;
555	}
556
557	req_free (req);
558	}	458	}
559
560	return count;
561	}	459	}
562		460
563	static void *aio_proc(void *arg);
564
565	static void start_thread (void)	461	static void atfork_child (void)
566	{	462	{
567	sigset_t fullsigset, oldsigset;	463	create_respipe ();
568	pthread_attr_t attr;
569
570	worker *wrk = calloc (1, sizeof (worker));
571
572	if (!wrk)
573	croak ("unable to allocate worker thread data");
574
575	pthread_attr_init (&attr);
576	pthread_attr_setstacksize (&attr, STACKSIZE);
577	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
578
579	sigfillset (&fullsigset);
580
581	LOCK (wrklock);
582	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
583
584	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
585	{
586	wrk->prev = &wrk_first;
587	wrk->next = wrk_first.next;
588	wrk_first.next->prev = wrk;
589	wrk_first.next = wrk;
590	started++;
591	}
592	else
593	free (wrk);
594
595	sigprocmask (SIG_SETMASK, &oldsigset, 0);
596	UNLOCK (wrklock);
597	}	464	}
598		465
599	static void req_send (aio_req req)	466	static SV *
		467	get_cb (SV *cb_sv)
600	{	468	{
601	while (started < wanted && nreqs >= started)	469	HV *st;
602	start_thread ();	470	GV *gvp;
		471	CV *cv;
603		472
604	++nreqs;	473	if (!SvOK (cb_sv))
605
606	LOCK (reqlock);
607	reqq_push (&req_queue, req);
608	pthread_cond_signal (&reqwait);
609	UNLOCK (reqlock);
610	}
611
612	static void end_thread (void)
613	{
614	aio_req req;
615
616	Newz (0, req, 1, aio_cb);
617
618	req->type = REQ_QUIT;
619	req->pri = PRI_MAX + PRI_BIAS;
620
621	req_send (req);
622	}
623
624	static void min_parallel (int nthreads)
625	{
626	if (wanted < nthreads)
627	wanted = nthreads;
628	}
629
630	static void max_parallel (int nthreads)
631	{
632	int cur = started;
633
634	if (wanted > nthreads)
635	wanted = nthreads;
636
637	while (cur > wanted)
638	{
639	end_thread ();
640	cur--;
641	}
642
643	while (started > wanted)
644	{
645	poll_wait ();
646	poll_cb ();
647	}
648	}
649
650	static void create_pipe ()
651	{
652	if (pipe (respipe))
653	croak ("unable to initialize result pipe");
654
655	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
656	croak ("cannot set result pipe to nonblocking mode");
657
658	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
659	croak ("cannot set result pipe to nonblocking mode");
660	}
661
662	/*****************************************************************************/
663	/* work around various missing functions */
664
665	#if !HAVE_PREADWRITE
666	# define pread aio_pread
667	# define pwrite aio_pwrite
668
669	/*
670	* make our pread/pwrite safe against themselves, but not against
671	* normal read/write by using a mutex. slows down execution a lot,
672	* but that's your problem, not mine.
673	*/
674	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
675
676	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
677	{
678	ssize_t res;
679	off_t ooffset;
680
681	LOCK (preadwritelock);
682	ooffset = lseek (fd, 0, SEEK_CUR);
683	lseek (fd, offset, SEEK_SET);
684	res = read (fd, buf, count);
685	lseek (fd, ooffset, SEEK_SET);
686	UNLOCK (preadwritelock);
687
688	return res;
689	}
690
691	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
692	{
693	ssize_t res;
694	off_t ooffset;
695
696	LOCK (preadwritelock);
697	ooffset = lseek (fd, 0, SEEK_CUR);
698	lseek (fd, offset, SEEK_SET);
699	res = write (fd, buf, count);
700	lseek (fd, offset, SEEK_SET);
701	UNLOCK (preadwritelock);
702
703	return res;
704	}
705	#endif
706
707	#if !HAVE_FDATASYNC
708	# define fdatasync fsync
709	#endif
710
711	#if !HAVE_READAHEAD
712	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
713
714	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
715	{
716	dBUF;
717
718	while (count > 0)
719	{
720	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
721
722	pread (fd, aio_buf, len, offset);
723	offset += len;
724	count -= len;
725	}
726
727	errno = 0;
728	}
729
730	#endif
731
732	#if !HAVE_READDIR_R
733	# define readdir_r aio_readdir_r
734
735	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
736
737	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
738	{
739	struct dirent *e;
740	int errorno;
741
742	LOCK (readdirlock);
743
744	e = readdir (dirp);
745	errorno = errno;
746
747	if (e)
748	{
749	*res = ent;
750	strcpy (ent->d_name, e->d_name);
751	}
752	else
753	*res = 0;
754
755	UNLOCK (readdirlock);
756
757	errno = errorno;
758	return e ? 0 : -1;
759	}
760	#endif
761
762	/* sendfile always needs emulation */
763	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
764	{
765	ssize_t res;
766
767	if (!count)
768	return 0;	474	return 0;
769		475
770	#if HAVE_SENDFILE	476	cv = sv_2cv (cb_sv, &st, &gvp, 0);
771	# if __linux
772	res = sendfile (ofd, ifd, &offset, count);
773		477
774	# elif __freebsd	478	if (!cv)
775	/*	479	croak ("IO::AIO watcher callback must be undef or a CODE reference");
776	* Of course, the freebsd sendfile is a dire hack with no thoughts
777	* wasted on making it similar to other I/O functions.
778	*/
779	{
780	off_t sbytes;
781	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
782		480
783	if (res < 0 && sbytes)	481	return (SV *)cv;
784	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
785	res = sbytes;
786	}
787
788	# elif __hpux
789	res = sendfile (ofd, ifd, offset, count, 0, 0);
790
791	# elif __solaris
792	{
793	struct sendfilevec vec;
794	size_t sbytes;
795
796	vec.sfv_fd = ifd;
797	vec.sfv_flag = 0;
798	vec.sfv_off = offset;
799	vec.sfv_len = count;
800
801	res = sendfilev (ofd, &vec, 1, &sbytes);
802
803	if (res < 0 && sbytes)
804	res = sbytes;
805	}
806
807	# endif
808	#else
809	res = -1;
810	errno = ENOSYS;
811	#endif
812
813	if (res < 0
814	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
815	#if __solaris
816	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
817	#endif
818	)
819	)
820	{
821	/* emulate sendfile. this is a major pain in the ass */
822	dBUF;
823
824	res = 0;
825
826	while (count)
827	{
828	ssize_t cnt;
829
830	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
831
832	if (cnt <= 0)
833	{
834	if (cnt && !res) res = -1;
835	break;
836	}
837
838	cnt = write (ofd, aio_buf, cnt);
839
840	if (cnt <= 0)
841	{
842	if (cnt && !res) res = -1;
843	break;
844	}
845
846	offset += cnt;
847	res += cnt;
848	count -= cnt;
849	}
850	}
851
852	return res;
853	}
854
855	/* read a full directory */
856	static void scandir_ (aio_req req, worker *self)
857	{
858	DIR *dirp;
859	union
860	{
861	struct dirent d;
862	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
863	} *u;
864	struct dirent *entp;
865	char *name, *names;
866	int memlen = 4096;
867	int memofs = 0;
868	int res = 0;
869	int errorno;
870
871	LOCK (wrklock);
872	self->dirp = dirp = opendir (req->dataptr);
873	self->dbuf = u = malloc (sizeof (*u));
874	UNLOCK (wrklock);
875
876	req->data2ptr = names = malloc (memlen);
877
878	if (dirp && u && names)
879	for (;;)
880	{
881	errno = 0;
882	readdir_r (dirp, &u->d, &entp);
883
884	if (!entp)
885	break;
886
887	name = entp->d_name;
888
889	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
890	{
891	int len = strlen (name) + 1;
892
893	res++;
894
895	while (memofs + len > memlen)
896	{
897	memlen *= 2;
898	LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);
900	UNLOCK (wrklock);
901
902	if (!names)
903	break;
904	}
905
906	memcpy (names + memofs, name, len);
907	memofs += len;
908	}
909	}
910
911	if (errno)
912	res = -1;
913
914	req->result = res;
915	}
916
917	/*****************************************************************************/
918
919	static void *aio_proc (void *thr_arg)
920	{
921	aio_req req;
922	int type;
923	worker *self = (worker *)thr_arg;
924
925	do
926	{
927	LOCK (reqlock);
928
929	for (;;)
930	{
931	self->req = req = reqq_shift (&req_queue);
932
933	if (req)
934	break;
935
936	pthread_cond_wait (&reqwait, &reqlock);
937	}
938
939	UNLOCK (reqlock);
940
941	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943
944	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)
946	{
947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
949
950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
952
953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
956
957	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
958	case REQ_CLOSE: req->result = close (req->fd); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
960	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
964
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;
967	case REQ_READDIR: scandir_ (req, self); break;
968
969	case REQ_BUSY:
970	{
971	struct timeval tv;
972
973	tv.tv_sec = req->fd;
974	tv.tv_usec = req->fd2;
975
976	req->result = select (0, 0, 0, 0, &tv);
977	}
978
979	case REQ_GROUP:
980	case REQ_NOP:
981	case REQ_QUIT:
982	break;
983
984	default:
985	req->result = ENOSYS;
986	break;
987	}
988
989	req->errorno = errno;
990
991	LOCK (reslock);
992
993	if (!reqq_push (&res_queue, req))
994	/* write a dummy byte to the pipe so fh becomes ready */
995	write (respipe [1], &respipe, 1);
996
997	self->req = 0;
998	worker_clear (self);
999
1000	UNLOCK (reslock);
1001	}
1002	while (type != REQ_QUIT);
1003
1004	LOCK (wrklock);
1005	worker_free (self);
1006	UNLOCK (wrklock);
1007
1008	return 0;
1009	}
1010
1011	/*****************************************************************************/
1012
1013	static void atfork_prepare (void)
1014	{
1015	LOCK (wrklock);
1016	LOCK (reqlock);
1017	LOCK (reslock);
1018	#if !HAVE_PREADWRITE
1019	LOCK (preadwritelock);
1020	#endif
1021	#if !HAVE_READDIR_R
1022	LOCK (readdirlock);
1023	#endif
1024	}
1025
1026	static void atfork_parent (void)
1027	{
1028	#if !HAVE_READDIR_R
1029	UNLOCK (readdirlock);
1030	#endif
1031	#if !HAVE_PREADWRITE
1032	UNLOCK (preadwritelock);
1033	#endif
1034	UNLOCK (reslock);
1035	UNLOCK (reqlock);
1036	UNLOCK (wrklock);
1037	}
1038
1039	static void atfork_child (void)
1040	{
1041	aio_req prv;
1042
1043	while (prv = reqq_shift (&req_queue))
1044	req_free (prv);
1045
1046	while (prv = reqq_shift (&res_queue))
1047	req_free (prv);
1048
1049	while (wrk_first.next != &wrk_first)
1050	{
1051	worker *wrk = wrk_first.next;
1052
1053	if (wrk->req)
1054	req_free (wrk->req);
1055
1056	worker_clear (wrk);
1057	worker_free (wrk);
1058	}
1059
1060	started = 0;
1061	nreqs = 0;
1062
1063	close (respipe [0]);
1064	close (respipe [1]);
1065	create_pipe ();
1066
1067	atfork_parent ();
1068	}	482	}
1069		483
1070	#define dREQ \	484	#define dREQ \
		485	SV *cb_cv; \
1071	aio_req req; \	486	aio_req req; \
1072	int req_pri = next_pri; \	487	int req_pri = next_pri; \
1073	next_pri = DEFAULT_PRI + PRI_BIAS; \	488	next_pri = EIO_PRI_DEFAULT; \
1074	\	489	\
1075	if (SvOK (callback) && !SvROK (callback)) \	490	cb_cv = get_cb (callback); \
1076	croak ("callback must be undef or of reference type"); \
1077	\	491	\
1078	Newz (0, req, 1, aio_cb); \	492	Newz (0, req, 1, eio_req); \
1079	if (!req) \	493	if (!req) \
1080	croak ("out of memory during aio_req allocation"); \	494	croak ("out of memory during eio_req allocation"); \
1081	\	495	\
1082	req->callback = newSVsv (callback); \	496	req->callback = SvREFCNT_inc (cb_cv); \
1083	req->pri = req_pri	497	req->pri = req_pri
1084		498
1085	#define REQ_SEND \	499	#define REQ_SEND \
		500	PUTBACK; \
1086	req_send (req); \	501	req_submit (req); \
		502	SPAGAIN; \
1087	\	503	\
1088	if (GIMME_V != G_VOID) \	504	if (GIMME_V != G_VOID) \
1089	XPUSHs (req_sv (req, AIO_REQ_KLASS));	505	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1090		506
1091	MODULE = IO::AIO PACKAGE = IO::AIO	507	MODULE = IO::AIO PACKAGE = IO::AIO
1092		508
1093	PROTOTYPES: ENABLE	509	PROTOTYPES: ENABLE
1094		510
1095	BOOT:	511	BOOT:
1096	{	512	{
1097	HV *stash = gv_stashpv ("IO::AIO", 1);	513	stash = gv_stashpv ("IO::AIO", 1);
		514
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	515	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	516	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1100	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	517	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		518	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		519	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		520	#ifndef _WIN32
		521	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		522	#endif
1101		523
1102	create_pipe ();	524	create_respipe ();
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
1104	}
1105		525
		526	if (eio_init (want_poll, done_poll) < 0)
		527	croak ("IO::AIO: unable to initialise eio library");
		528
		529	/* atfork child called in fifo order, so before eio's handler */
		530	X_THREAD_ATFORK (0, 0, atfork_child);
		531	}
		532
1106	void	533	void
1107	min_parallel (nthreads)	534	max_poll_reqs (int nreqs)
1108	int nthreads
1109	PROTOTYPE: $	535	PROTOTYPE: $
		536	CODE:
		537	eio_set_max_poll_reqs (nreqs);
1110		538
1111	void	539	void
1112	max_parallel (nthreads)	540	max_poll_time (double nseconds)
1113	int nthreads
1114	PROTOTYPE: $	541	PROTOTYPE: $
		542	CODE:
		543	eio_set_max_poll_time (nseconds);
1115		544
1116	void	545	void
		546	min_parallel (int nthreads)
		547	PROTOTYPE: $
		548	CODE:
		549	eio_set_min_parallel (nthreads);
		550
		551	void
		552	max_parallel (int nthreads)
		553	PROTOTYPE: $
		554	CODE:
		555	eio_set_max_parallel (nthreads);
		556
		557	void
		558	max_idle (int nthreads)
		559	PROTOTYPE: $
		560	CODE:
		561	eio_set_max_idle (nthreads);
		562
		563	void
		564	max_outstanding (int maxreqs)
		565	PROTOTYPE: $
		566	CODE:
		567	max_outstanding = maxreqs;
		568
		569	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	570	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1118	SV * pathname
1119	int flags
1120	int mode
1121	SV * callback
1122	PROTOTYPE: $$$;$	571	PROTOTYPE: $$$;$
1123	PPCODE:	572	PPCODE:
1124	{	573	{
1125	dREQ;	574	dREQ;
1126		575
1127	req->type = REQ_OPEN;	576	req->type = EIO_OPEN;
1128	req->data = newSVsv (pathname);	577	req->sv1 = newSVsv (pathname);
1129	req->dataptr = SvPVbyte_nolen (req->data);	578	req->ptr1 = SvPVbyte_nolen (req->sv1);
1130	req->fd = flags;	579	req->int1 = flags;
1131	req->mode = mode;	580	req->int2 = mode;
1132		581
1133	REQ_SEND;	582	REQ_SEND;
1134	}	583	}
1135		584
1136	void	585	void
1137	aio_close (fh,callback=&PL_sv_undef)	586	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$	587	PROTOTYPE: $;$
1141	ALIAS:	588	ALIAS:
1142	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC	589	aio_fsync = EIO_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC	590	aio_fdatasync = EIO_FDATASYNC
1145	PPCODE:	591	PPCODE:
1146	{	592	{
1147	dREQ;	593	dREQ;
1148		594
1149	req->type = ix;	595	req->type = ix;
1150	req->fh = newSVsv (fh);	596	req->sv1 = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	597	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1152		598
1153	REQ_SEND (req);	599	REQ_SEND (req);
1154	}	600	}
1155		601
1156	void	602	void
		603	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		604	PROTOTYPE: $;$
		605	PPCODE:
		606	{
		607	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		608	dREQ;
		609
		610	if (close_pipe < 0)
		611	{
		612	int pipefd [2];
		613
		614	if (pipe (pipefd) < 0
		615	|| close (pipefd [1]) < 0
		616	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		617	abort (); /*D*/
		618
		619	close_pipe = pipefd [0];
		620	}
		621
		622	req->type = EIO_DUP2;
		623	req->int1 = close_pipe;
		624	req->sv2 = newSVsv (fh);
		625	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		626
		627	REQ_SEND (req);
		628	}
		629
		630	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	631	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:	632	ALIAS:
1165	aio_read = REQ_READ	633	aio_read = EIO_READ
1166	aio_write = REQ_WRITE	634	aio_write = EIO_WRITE
1167	PROTOTYPE: $$$$$;$	635	PROTOTYPE: $$$$$;$
1168	PPCODE:	636	PPCODE:
1169	{	637	{
1170	aio_req req;
1171	STRLEN svlen;	638	STRLEN svlen;
1172	char *svptr = SvPVbyte (data, svlen);	639	char *svptr = SvPVbyte (data, svlen);
		640	UV len = SvUV (length);
1173		641
1174	SvUPGRADE (data, SVt_PV);	642	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);	643	SvPOK_on (data);
1176		644
1177	if (dataoffset < 0)	645	if (dataoffset < 0)
1178	dataoffset += svlen;	646	dataoffset += svlen;
1179		647
1180	if (dataoffset < 0 || dataoffset > svlen)	648	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	649	croak ("dataoffset outside of data scalar");
1182		650
1183	if (ix == REQ_WRITE)	651	if (ix == EIO_WRITE)
1184	{	652	{
1185	/* write: check length and adjust. */	653	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	654	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	655	len = svlen - dataoffset;
1188	}	656	}
1189	else	657	else
1190	{	658	{
1191	/* read: grow scalar as necessary */	659	/* read: grow scalar as necessary */
1192	svptr = SvGROW (data, length + dataoffset);	660	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	661	}
1194		662
1195	if (length < 0)	663	if (len < 0)
1196	croak ("length must not be negative");	664	croak ("length must not be negative");
1197		665
1198	{	666	{
1199	dREQ;	667	dREQ;
1200		668
1201	req->type = ix;	669	req->type = ix;
1202	req->fh = newSVsv (fh);	670	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	671	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
1204	: IoOFP (sv_2io (fh)));	672	: IoOFP (sv_2io (fh)));
		673	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	674	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	675	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	676	req->ptr2 = (char *)svptr + dataoffset;
		677	req->stroffset = dataoffset;
1209		678
1210	if (!SvREADONLY (data))	679	if (!SvREADONLY (data))
1211	{	680	{
1212	SvREADONLY_on (data);	681	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	682	req->flags |= FLAG_SV2_RO_OFF;
1214	}	683	}
1215		684
1216	REQ_SEND;	685	REQ_SEND;
1217	}	686	}
1218	}	687	}
1219		688
1220	void	689	void
		690	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		691	PROTOTYPE: $$;$
		692	PPCODE:
		693	{
		694	SV *data;
		695	dREQ;
		696
		697	req->type = EIO_READLINK;
		698	req->sv1 = newSVsv (path);
		699	req->ptr1 = SvPVbyte_nolen (req->sv1);
		700
		701	REQ_SEND;
		702	}
		703
		704	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	705	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1222	SV * out_fh
1223	SV * in_fh
1224	UV in_offset
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$	706	PROTOTYPE: $$$$;$
1228	PPCODE:	707	PPCODE:
1229	{	708	{
1230	dREQ;	709	dREQ;
1231		710
1232	req->type = REQ_SENDFILE;	711	req->type = EIO_SENDFILE;
1233	req->fh = newSVsv (out_fh);	712	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	713	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1235	req->fh2 = newSVsv (in_fh);	714	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	715	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1237	req->offset = in_offset;	716	req->offs = SvVAL64 (in_offset);
1238	req->length = length;	717	req->size = length;
1239		718
1240	REQ_SEND;	719	REQ_SEND;
1241	}	720	}
1242		721
1243	void	722	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	723	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$	724	PROTOTYPE: $$$;$
1250	PPCODE:	725	PPCODE:
1251	{	726	{
1252	dREQ;	727	dREQ;
1253		728
1254	req->type = REQ_READAHEAD;	729	req->type = EIO_READAHEAD;
1255	req->fh = newSVsv (fh);	730	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	731	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1257	req->offset = offset;	732	req->offs = SvVAL64 (offset);
1258	req->length = length;	733	req->size = length;
1259		734
1260	REQ_SEND;	735	REQ_SEND;
1261	}	736	}
1262		737
1263	void	738	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	739	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	740	ALIAS:
1268	aio_stat = REQ_STAT	741	aio_stat = EIO_STAT
1269	aio_lstat = REQ_LSTAT	742	aio_lstat = EIO_LSTAT
1270	PPCODE:	743	PPCODE:
1271	{	744	{
1272	dREQ;	745	dREQ;
1273		746
1274	New (0, req->statdata, 1, Stat_t);	747	req->sv1 = newSVsv (fh_or_path);
1275	if (!req->statdata)
1276	{
1277	req_free (req);
1278	croak ("out of memory during aio_req->statdata allocation");
1279	}
1280		748
1281	if (SvPOK (fh_or_path))	749	if (SvPOK (req->sv1))
1282	{	750	{
1283	req->type = ix;	751	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);	752	req->ptr1 = SvPVbyte_nolen (req->sv1);
1286	}	753	}
1287	else	754	else
1288	{	755	{
1289	req->type = REQ_FSTAT;	756	req->type = EIO_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	757	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}	758	}
1293		759
1294	REQ_SEND;	760	REQ_SEND;
1295	}	761	}
1296		762
1297	void	763	void
		764	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		765	PPCODE:
		766	{
		767	dREQ;
		768
		769	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		770	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		771	req->sv1 = newSVsv (fh_or_path);
		772
		773	if (SvPOK (req->sv1))
		774	{
		775	req->type = EIO_UTIME;
		776	req->ptr1 = SvPVbyte_nolen (req->sv1);
		777	}
		778	else
		779	{
		780	req->type = EIO_FUTIME;
		781	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		782	}
		783
		784	REQ_SEND;
		785	}
		786
		787	void
		788	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		789	PPCODE:
		790	{
		791	dREQ;
		792
		793	req->sv1 = newSVsv (fh_or_path);
		794	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		795
		796	if (SvPOK (req->sv1))
		797	{
		798	req->type = EIO_TRUNCATE;
		799	req->ptr1 = SvPVbyte_nolen (req->sv1);
		800	}
		801	else
		802	{
		803	req->type = EIO_FTRUNCATE;
		804	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		805	}
		806
		807	REQ_SEND;
		808	}
		809
		810	void
		811	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		812	ALIAS:
		813	aio_chmod = EIO_CHMOD
		814	aio_mkdir = EIO_MKDIR
		815	PPCODE:
		816	{
		817	dREQ;
		818
		819	req->int2 = mode;
		820	req->sv1 = newSVsv (fh_or_path);
		821
		822	if (SvPOK (req->sv1))
		823	{
		824	req->type = ix;
		825	req->ptr1 = SvPVbyte_nolen (req->sv1);
		826	}
		827	else
		828	{
		829	req->type = EIO_FCHMOD;
		830	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		831	}
		832
		833	REQ_SEND;
		834	}
		835
		836	void
		837	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		838	PPCODE:
		839	{
		840	dREQ;
		841
		842	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		843	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		844	req->sv1 = newSVsv (fh_or_path);
		845
		846	if (SvPOK (req->sv1))
		847	{
		848	req->type = EIO_CHOWN;
		849	req->ptr1 = SvPVbyte_nolen (req->sv1);
		850	}
		851	else
		852	{
		853	req->type = EIO_FCHOWN;
		854	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		855	}
		856
		857	REQ_SEND;
		858	}
		859
		860	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	861	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	862	ALIAS:
1302	aio_unlink = REQ_UNLINK	863	aio_unlink = EIO_UNLINK
1303	aio_rmdir = REQ_RMDIR	864	aio_rmdir = EIO_RMDIR
1304	aio_readdir = REQ_READDIR	865	aio_readdir = EIO_READDIR
1305	PPCODE:	866	PPCODE:
1306	{	867	{
1307	dREQ;	868	dREQ;
1308		869
1309	req->type = ix;	870	req->type = ix;
1310	req->data = newSVsv (pathname);	871	req->sv1 = newSVsv (pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	872	req->ptr1 = SvPVbyte_nolen (req->sv1);
		873
		874	REQ_SEND;
		875	}
		876
		877	void
		878	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		879	ALIAS:
		880	aio_link = EIO_LINK
		881	aio_symlink = EIO_SYMLINK
		882	aio_rename = EIO_RENAME
		883	PPCODE:
		884	{
		885	dREQ;
		886
		887	req->type = ix;
		888	req->sv1 = newSVsv (oldpath);
		889	req->ptr1 = SvPVbyte_nolen (req->sv1);
		890	req->sv2 = newSVsv (newpath);
		891	req->ptr2 = SvPVbyte_nolen (req->sv2);
1312		892
1313	REQ_SEND;	893	REQ_SEND;
1314	}	894	}
1315		895
1316	void	896	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	897	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:
1322	aio_link = REQ_LINK
1323	aio_symlink = REQ_SYMLINK
1324	aio_rename = REQ_RENAME
1325	PPCODE:	898	PPCODE:
1326	{	899	{
1327	dREQ;	900	dREQ;
1328		901
1329	req->type = ix;	902	req->type = EIO_MKNOD;
1330	req->fh = newSVsv (oldpath);	903	req->sv1 = newSVsv (pathname);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	904	req->ptr1 = SvPVbyte_nolen (req->sv1);
1332	req->data = newSVsv (newpath);	905	req->int2 = (mode_t)mode;
1333	req->dataptr = SvPVbyte_nolen (req->data);	906	req->offs = dev;
1334		907
1335	REQ_SEND;	908	REQ_SEND;
1336	}	909	}
1337		910
1338	void	911	void
1339	aio_busy (delay,callback=&PL_sv_undef)	912	aio_busy (double delay, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	913	PPCODE:
1343	{	914	{
1344	dREQ;	915	dREQ;
1345		916
1346	req->type = REQ_BUSY;	917	req->type = EIO_BUSY;
1347	req->fd = delay < 0. ? 0 : delay;	918	req->nv1 = delay < 0. ? 0. : delay;
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1349		919
1350	REQ_SEND;	920	REQ_SEND;
1351	}	921	}
1352		922
1353	void	923	void
1354	aio_group (callback=&PL_sv_undef)	924	aio_group (SV *callback=&PL_sv_undef)
1355	SV * callback
1356	PROTOTYPE: ;$	925	PROTOTYPE: ;$
1357	PPCODE:	926	PPCODE:
1358	{	927	{
1359	dREQ;	928	dREQ;
1360		929
1361	req->type = REQ_GROUP;	930	req->type = EIO_GROUP;
		931
1362	req_send (req);	932	req_submit (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	933	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1365	}	934	}
1366		935
1367	void	936	void
1368	aio_nop (callback=&PL_sv_undef)	937	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback	938	ALIAS:
		939	aio_nop = EIO_NOP
		940	aio_sync = EIO_SYNC
1370	PPCODE:	941	PPCODE:
1371	{	942	{
1372	dREQ;	943	dREQ;
1373		944
1374	req->type = REQ_NOP;	945	req->type = ix;
1375		946
1376	REQ_SEND;	947	REQ_SEND;
1377	}	948	}
1378		949
1379	void	950	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	951	aioreq_pri (int pri = 0)
1381	CODE:	952	PROTOTYPE: ;$
		953	CODE:
		954	RETVAL = next_pri;
		955	if (items > 0)
		956	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	957	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	958	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	959	next_pri = pri;
		960	}
		961	OUTPUT:
		962	RETVAL
1385		963
1386	void	964	void
1387	aioreq_nice (int nice = 0)	965	aioreq_nice (int nice = 0)
1388	CODE:	966	CODE:
1389	nice = next_pri - nice;	967	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	968	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	969	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	970	next_pri = nice;
1393		971
1394	void	972	void
1395	flush ()	973	flush ()
1396	PROTOTYPE:	974	PROTOTYPE:
1397	CODE:	975	CODE:
1398	while (nreqs)	976	while (eio_nreqs ())
1399	{	977	{
1400	poll_wait ();	978	poll_wait ();
1401	poll_cb ();	979	poll_cb ();
1402	}	980	}
1403		981
1404	void	982	int
1405	poll()	983	poll()
1406	PROTOTYPE:	984	PROTOTYPE:
1407	CODE:	985	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	986	poll_wait ();
1411	poll_cb ();	987	RETVAL = poll_cb ();
1412	}	988	OUTPUT:
		989	RETVAL
1413		990
1414	int	991	int
1415	poll_fileno()	992	poll_fileno()
1416	PROTOTYPE:	993	PROTOTYPE:
1417	CODE:	994	CODE:
…		…
1429		1006
1430	void	1007	void
1431	poll_wait()	1008	poll_wait()
1432	PROTOTYPE:	1009	PROTOTYPE:
1433	CODE:	1010	CODE:
1434	if (nreqs)
1435	poll_wait ();	1011	poll_wait ();
1436		1012
1437	int	1013	int
1438	nreqs()	1014	nreqs()
1439	PROTOTYPE:	1015	PROTOTYPE:
1440	CODE:	1016	CODE:
1441	RETVAL = nreqs;	1017	RETVAL = eio_nreqs ();
1442	OUTPUT:	1018	OUTPUT:
1443	RETVAL	1019	RETVAL
1444		1020
		1021	int
		1022	nready()
		1023	PROTOTYPE:
		1024	CODE:
		1025	RETVAL = eio_nready ();
		1026	OUTPUT:
		1027	RETVAL
		1028
		1029	int
		1030	npending()
		1031	PROTOTYPE:
		1032	CODE:
		1033	RETVAL = eio_npending ();
		1034	OUTPUT:
		1035	RETVAL
		1036
		1037	int
		1038	nthreads()
		1039	PROTOTYPE:
		1040	CODE:
		1041	RETVAL = eio_nthreads ();
		1042	OUTPUT:
		1043	RETVAL
		1044
		1045	void _on_next_submit (SV *cb)
		1046	CODE:
		1047	SvREFCNT_dec (on_next_submit);
		1048	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1049
1445	PROTOTYPES: DISABLE	1050	PROTOTYPES: DISABLE
1446		1051
1447	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1052	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1448		1053
1449	void	1054	void
1450	cancel (aio_req_ornot req)	1055	cancel (aio_req_ornot req)
1451	CODE:	1056	CODE:
1452	req_cancel (req);	1057	eio_cancel (req);
1453		1058
1454	void	1059	void
1455	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1060	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1456	CODE:	1061	PPCODE:
		1062	{
		1063	if (GIMME_V != G_VOID)
		1064	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1065
		1066	if (items > 1)
		1067	{
		1068	SV *cb_cv = get_cb (callback);
		1069
1457	SvREFCNT_dec (req->callback);	1070	SvREFCNT_dec (req->callback);
1458	req->callback = newSVsv (callback);	1071	req->callback = SvREFCNT_inc (cb_cv);
		1072	}
		1073	}
1459		1074
1460	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1075	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1461		1076
1462	void	1077	void
1463	add (aio_req grp, ...)	1078	add (aio_req grp, ...)
1464	PPCODE:	1079	PPCODE:
1465	{	1080	{
1466	int i;	1081	int i;
1467	aio_req req;
1468		1082
1469	if (grp->fd == 2)	1083	if (grp->int1 == 2)
1470	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1084	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1471		1085
1472	for (i = 1; i < items; ++i )	1086	for (i = 1; i < items; ++i )
1473	{	1087	{
		1088	aio_req req;
		1089
1474	if (GIMME_V != G_VOID)	1090	if (GIMME_V != G_VOID)
1475	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1091	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1476		1092
1477	req = SvAIO_REQ (ST (i));	1093	req = SvAIO_REQ (ST (i));
1478		1094
1479	if (req)	1095	if (req)
1480	{	1096	eio_grp_add (grp, req);
1481	++grp->length;
1482	req->grp = grp;
1483
1484	req->grp_prev = 0;
1485	req->grp_next = grp->grp_first;
1486
1487	if (grp->grp_first)
1488	grp->grp_first->grp_prev = req;
1489
1490	grp->grp_first = req;
1491	}
1492	}	1097	}
1493	}	1098	}
1494		1099
1495	void	1100	void
1496	cancel_subs (aio_req_ornot req)	1101	cancel_subs (aio_req_ornot req)
…		…
1500	void	1105	void
1501	result (aio_req grp, ...)	1106	result (aio_req grp, ...)
1502	CODE:	1107	CODE:
1503	{	1108	{
1504	int i;	1109	int i;
		1110	AV *av;
		1111
		1112	grp->errorno = errno;
		1113
1505	AV *av = newAV ();	1114	av = newAV ();
1506		1115
1507	for (i = 1; i < items; ++i )	1116	for (i = 1; i < items; ++i )
1508	av_push (av, newSVsv (ST (i)));	1117	av_push (av, newSVsv (ST (i)));
1509		1118
1510	SvREFCNT_dec (grp->data);	1119	SvREFCNT_dec (grp->sv1);
1511	grp->data = (SV *)av;	1120	grp->sv1 = (SV *)av;
1512	}	1121	}
		1122
		1123	void
		1124	errno (aio_req grp, int errorno = errno)
		1125	CODE:
		1126	grp->errorno = errorno;
1513		1127
1514	void	1128	void
1515	limit (aio_req grp, int limit)	1129	limit (aio_req grp, int limit)
1516	CODE:	1130	CODE:
1517	grp->fd2 = limit;	1131	eio_grp_limit (grp, limit);
1518	aio_grp_feed (grp);
1519		1132
1520	void	1133	void
1521	feed (aio_req grp, SV *callback=&PL_sv_undef)	1134	feed (aio_req grp, SV *callback=&PL_sv_undef)
1522	CODE:	1135	CODE:
1523	{	1136	{
1524	SvREFCNT_dec (grp->fh2);	1137	SvREFCNT_dec (grp->sv2);
1525	grp->fh2 = newSVsv (callback);	1138	grp->sv2 = newSVsv (callback);
1526		1139
1527	if (grp->fd2 <= 0)	1140	if (grp->int2 <= 0)
1528	grp->fd2 = 2;	1141	grp->int2 = 2;
1529		1142
1530	aio_grp_feed (grp);	1143	eio_grp_limit (grp, grp->int2);
1531	}	1144	}
1532		1145

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