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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.98 by root, Wed May 9 06:45:12 2007 UTC vs.
Revision 1.152 by root, Tue Jul 14 00:32:27 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>
23		19
24	#if HAVE_SENDFILE	20	/* perl namespace pollution */
25	# if __linux	21	#undef VERSION
26	# include <sys/sendfile.h>	22
27	# elif __freebsd	23	#ifdef _WIN32
28	# include <sys/socket.h>	24
29	# include <sys/uio.h>	25	# define EIO_STRUCT_DIRENT Direntry_t
30	# elif __hpux	26	# undef malloc
31	# include <sys/socket.h>	27	# undef free
32	# elif __solaris /* not yet */	28
33	# include <sys/sendfile.h>	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
34	# else	61	#else
35	# error sendfile support requested but not available	62
		63	# include <sys/time.h>
		64	# include <sys/select.h>
		65	# include <unistd.h>
		66	# include <utime.h>
		67	# include <signal.h>
		68	# define EIO_STRUCT_DIRENT struct dirent
		69
36	# endif	70	#endif
37	#endif
38		71
39	/* number of seconds after which idle threads exit */	72	/* perl stupidly overrides readdir and maybe others */
40	#define IDLE_TIMEOUT 10	73	/* with thread-unsafe versions, imagine that :( */
		74	#undef readdir
		75	#undef opendir
		76	#undef closedir
41		77
42	/* used for struct dirent, AIX doesn't provide it */	78	#define EIO_STRUCT_STAT Stat_t
43	#ifndef NAME_MAX
44	# define NAME_MAX 4096
45	#endif
46		79
47	/* buffer size for various temporary buffers */	80	/* use NV for 32 bit perls as it allows larger offsets */
48	#define AIO_BUFSIZE 65536	81	#if IVSIZE >= 8
		82	# define VAL64 IV
		83	# define SvVAL64 SvIV
		84	# define newSVval64 newSViv
		85	#else
		86	# define VAL64 NV
		87	# define SvVAL64 SvNV
		88	# define newSVval64 newSVnv
		89	#endif
49		90
50	#define dBUF \	91	/*****************************************************************************/
51	char *aio_buf; \
52	LOCK (wrklock); \
53	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
54	UNLOCK (wrklock); \
55	if (!aio_buf) \
56	return -1;
57		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;
58	typedef SV SV8; /* byte-sv, used for argument-checking */	105	typedef SV SV8; /* byte-sv, used for argument-checking */
59		106	typedef int aio_rfd; /* read file desriptor */
60	enum {	107	typedef int aio_wfd; /* write file descriptor */
61	REQ_QUIT,
62	REQ_OPEN, REQ_CLOSE,
63	REQ_READ, REQ_WRITE, REQ_READAHEAD,
64	REQ_SENDFILE,
65	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
66	REQ_FSYNC, REQ_FDATASYNC,
67	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
68	REQ_MKNOD, REQ_READDIR,
69	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
70	REQ_GROUP, REQ_NOP,
71	REQ_BUSY,
72	};
73		108
74	#define AIO_REQ_KLASS "IO::AIO::REQ"	109	#define AIO_REQ_KLASS "IO::AIO::REQ"
75	#define AIO_GRP_KLASS "IO::AIO::GRP"	110	#define AIO_GRP_KLASS "IO::AIO::GRP"
76		111
77	typedef struct aio_cb	112	#define EIO_REQ_MEMBERS \
78	{
79	struct aio_cb *volatile next;
80
81	SV *callback, *fh;	113	SV *callback; \
82	SV *sv1, *sv2;	114	SV *sv1, *sv2; \
83	void *ptr1, *ptr2;
84	off_t offs;
85	size_t size;
86	ssize_t result;
87
88	STRLEN stroffset;	115	STRLEN stroffset; \
89	int type;	116	SV *self;
90	int int1, int2;
91	int errorno;
92	mode_t mode; /* open */
93		117
94	unsigned char flags;	118	#define EIO_NO_WRAPPERS 1
95	unsigned char pri;
96		119
97	SV *self; /* the perl counterpart of this request, if any */	120	#include "libeio/eio.h"
98	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	121
99	} 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)
100		151
101	enum {	152	enum {
102	FLAG_CANCELLED = 0x01, /* request was cancelled */
103	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */	153	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
104	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
105	};	154	};
106		155
		156	#include "libeio/eio.c"
		157
107	typedef aio_cb *aio_req;	158	typedef eio_req *aio_req;
108	typedef aio_cb *aio_req_ornot;	159	typedef eio_req *aio_req_ornot;
109		160
110	enum {	161	static SV *on_next_submit;
111	PRI_MIN = -4,	162	static int next_pri = EIO_PRI_DEFAULT;
112	PRI_MAX = 4,	163	static int max_outstanding;
113		164
114	DEFAULT_PRI = 0,	165	static int respipe_osf [2], respipe [2] = { -1, -1 };
115	PRI_BIAS = -PRI_MIN,
116	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
117	};
118		166
119	#define AIO_TICKS ((1000000 + 1023) >> 10)
120
121	static unsigned int max_poll_time = 0;
122	static unsigned int max_poll_reqs = 0;
123
124	/* calculcate time difference in ~1/AIO_TICKS of a second */
125	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
126	{
127	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
128	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
129	}
130
131	static thread_t main_tid;
132	static int main_sig;
133	static int block_sig_level;
134
135	void block_sig ()
136	{
137	sigset_t ss;
138
139	if (block_sig_level++)
140	return;
141
142	if (!main_sig)
143	return;
144
145	sigemptyset (&ss);
146	sigaddset (&ss, main_sig);
147	pthread_sigmask (SIG_BLOCK, &ss, 0);
148	}
149
150	void unblock_sig ()
151	{
152	sigset_t ss;
153
154	if (--block_sig_level)
155	return;
156
157	if (!main_sig)
158	return;
159
160	sigemptyset (&ss);
161	sigaddset (&ss, main_sig);
162	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
163	}
164
165	static int next_pri = DEFAULT_PRI + PRI_BIAS;
166
167	static unsigned int started, idle, wanted;
168
169	/* worker threads management */
170	static mutex_t wrklock = MUTEX_INIT;
171
172	typedef struct worker {
173	/* locked by wrklock */
174	struct worker *prev, *next;
175
176	thread_t tid;
177
178	/* locked by reslock, reqlock or wrklock */
179	aio_req req; /* currently processed request */
180	void *dbuf;
181	DIR *dirp;
182	} worker;
183
184	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
185
186	static void worker_clear (worker *wrk)
187	{
188	if (wrk->dirp)
189	{
190	closedir (wrk->dirp);
191	wrk->dirp = 0;
192	}
193
194	if (wrk->dbuf)
195	{
196	free (wrk->dbuf);
197	wrk->dbuf = 0;
198	}
199	}
200
201	static void worker_free (worker *wrk)
202	{
203	wrk->next->prev = wrk->prev;
204	wrk->prev->next = wrk->next;
205
206	free (wrk);
207	}
208
209	static volatile unsigned int nreqs, nready, npending;
210	static volatile unsigned int max_idle = 4;
211	static volatile unsigned int max_outstanding = 0xffffffff;
212	static int respipe [2];
213
214	static mutex_t reslock = MUTEX_INIT;
215	static mutex_t reqlock = MUTEX_INIT;
216	static cond_t reqwait = COND_INIT;
217
218	#if WORDACCESS_UNSAFE
219
220	static unsigned int get_nready ()
221	{
222	unsigned int retval;
223
224	LOCK (reqlock);
225	retval = nready;
226	UNLOCK (reqlock);
227
228	return retval;
229	}
230
231	static unsigned int get_npending ()
232	{
233	unsigned int retval;
234
235	LOCK (reslock);
236	retval = npending;
237	UNLOCK (reslock);
238
239	return retval;
240	}
241
242	static unsigned int get_nthreads ()
243	{
244	unsigned int retval;
245
246	LOCK (wrklock);
247	retval = started;
248	UNLOCK (wrklock);
249
250	return retval;
251	}
252
253	#else
254
255	# define get_nready() nready
256	# define get_npending() npending
257	# define get_nthreads() started
258
259	#endif
260
261	/*
262	* a somewhat faster data structure might be nice, but
263	* with 8 priorities this actually needs <20 insns
264	* per shift, the most expensive operation.
265	*/
266	typedef struct {
267	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
268	int size;
269	} reqq;
270
271	static reqq req_queue;
272	static reqq res_queue;
273
274	int reqq_push (reqq *q, aio_req req)
275	{
276	int pri = req->pri;
277	req->next = 0;
278
279	if (q->qe[pri])
280	{
281	q->qe[pri]->next = req;
282	q->qe[pri] = req;
283	}
284	else
285	q->qe[pri] = q->qs[pri] = req;
286
287	return q->size++;
288	}
289
290	aio_req reqq_shift (reqq *q)
291	{
292	int pri;
293
294	if (!q->size)
295	return 0;
296
297	--q->size;
298
299	for (pri = NUM_PRI; pri--; )
300	{
301	aio_req req = q->qs[pri];
302
303	if (req)
304	{
305	if (!(q->qs[pri] = req->next))
306	q->qe[pri] = 0;
307
308	return req;
309	}
310	}
311
312	abort ();
313	}
314
315	static int poll_cb ();
316	static int req_invoke (aio_req req);
317	static void req_free (aio_req req);	167	static void req_destroy (aio_req req);
318	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	}
319		183
320	/* must be called at most once */	184	/* must be called at most once */
321	static SV *req_sv (aio_req req, const char *klass)	185	static SV *req_sv (aio_req req, const char *klass)
322	{	186	{
323	if (!req->self)	187	if (!req->self)
…		…
341	return mg ? (aio_req)mg->mg_ptr : 0;	205	return mg ? (aio_req)mg->mg_ptr : 0;
342	}	206	}
343		207
344	static void aio_grp_feed (aio_req grp)	208	static void aio_grp_feed (aio_req grp)
345	{	209	{
346	block_sig ();	210	if (grp->sv2 && SvOK (grp->sv2))
347
348	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
349	{	211	{
350	int old_len = grp->size;
351
352	if (grp->sv2 && SvOK (grp->sv2))
353	{
354	dSP;	212	dSP;
355		213
356	ENTER;	214	ENTER;
357	SAVETMPS;	215	SAVETMPS;
358	PUSHMARK (SP);	216	PUSHMARK (SP);
359	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	217	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
360	PUTBACK;	218	PUTBACK;
361	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	219	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
362	SPAGAIN;	220	SPAGAIN;
363	FREETMPS;	221	FREETMPS;
364	LEAVE;	222	LEAVE;
365	}
366
367	/* stop if no progress has been made */
368	if (old_len == grp->size)
369	{
370	SvREFCNT_dec (grp->sv2);
371	grp->sv2 = 0;
372	break;
373	}
374	}	223	}
375
376	unblock_sig ();
377	}	224	}
378		225
379	static void aio_grp_dec (aio_req grp)	226	static void req_submit (eio_req *req)
380	{	227	{
381	--grp->size;	228	eio_submit (req);
382		229
383	/* call feeder, if applicable */	230	if (expect_false (on_next_submit))
384	aio_grp_feed (grp);
385
386	/* finish, if done */
387	if (!grp->size && grp->int1)
388	{	231	{
389	block_sig ();	232	dSP;
		233	SV *cb = sv_2mortal (on_next_submit);
390		234
391	if (!req_invoke (grp))	235	on_next_submit = 0;
392	{
393	req_free (grp);
394	unblock_sig ();
395	croak (0);
396	}
397		236
398	req_free (grp);	237	PUSHMARK (SP);
399	unblock_sig ();	238	PUTBACK;
		239	call_sv (cb, G_DISCARD | G_EVAL);
400	}	240	}
401	}	241	}
402		242
403	static int req_invoke (aio_req req)	243	static int req_invoke (eio_req *req)
404	{	244	{
405	dSP;	245	dSP;
406		246
407	if (req->flags & FLAG_SV1_RO_OFF)	247	if (req->flags & FLAG_SV2_RO_OFF)
408	SvREADONLY_off (req->sv1);	248	SvREADONLY_off (req->sv2);
409		249
410	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	250	if (!EIO_CANCELLED (req) && req->callback)
411	{	251	{
412	ENTER;	252	ENTER;
413	SAVETMPS;	253	SAVETMPS;
414	PUSHMARK (SP);	254	PUSHMARK (SP);
415	EXTEND (SP, 1);	255	EXTEND (SP, 1);
416		256
417	switch (req->type)	257	switch (req->type)
418	{	258	{
419	case REQ_READDIR:	259	case EIO_READDIR:
420	{	260	{
421	SV *rv = &PL_sv_undef;	261	SV *rv = &PL_sv_undef;
422		262
423	if (req->result >= 0)	263	if (req->result >= 0)
424	{	264	{
425	int i;	265	int i;
426	char *buf = req->ptr2;	266	char *names = (char *)req->ptr2;
		267	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
427	AV *av = newAV ();	268	AV *av = newAV ();
428		269
429	av_extend (av, req->result - 1);	270	av_extend (av, req->result - 1);
430		271
431	for (i = 0; i < req->result; ++i)	272	for (i = 0; i < req->result; ++i)
432	{	273	{
433	SV *sv = newSVpv (buf, 0);	274	if (req->int1 & EIO_READDIR_DENTS)
		275	{
		276	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
434		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
435	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);
436	buf += SvCUR (sv) + 1;	306	names += SvCUR (name) + 1;
		307	}
437	}	308	}
438		309
439	rv = sv_2mortal (newRV_noinc ((SV *)av));	310	rv = sv_2mortal (newRV_noinc ((SV *)av));
440	}	311	}
441		312
442	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))));
443	}	317	}
444	break;	318	break;
445		319
446	case REQ_OPEN:	320	case EIO_OPEN:
447	{	321	{
448	/* convert fd to fh */	322	/* convert fd to fh */
449	SV *fh;	323	SV *fh = &PL_sv_undef;
450		324
451	PUSHs (sv_2mortal (newSViv (req->result)));	325	if (req->result >= 0)
452	PUTBACK;	326	{
453	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	327	GV *gv = (GV *)sv_newmortal ();
454	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);
455		334
456	fh = POPs;	335	symlen = snprintf (
457	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
458	XPUSHs (fh);	347	PUSHs (fh);
459	}	348	}
460	break;	349	break;
461		350
462	case REQ_GROUP:	351	case EIO_GROUP:
463	req->int1 = 2; /* mark group as finished */	352	req->int1 = 2; /* mark group as finished */
464		353
465	if (req->sv1)	354	if (req->sv1)
466	{	355	{
467	int i;	356	int i;
…		…
471	for (i = 0; i <= AvFILL (av); ++i)	360	for (i = 0; i <= AvFILL (av); ++i)
472	PUSHs (*av_fetch (av, i, 0));	361	PUSHs (*av_fetch (av, i, 0));
473	}	362	}
474	break;	363	break;
475		364
476	case REQ_NOP:	365	case EIO_NOP:
477	case REQ_BUSY:	366	case EIO_BUSY:
478	break;	367	break;
479		368
480	case REQ_READLINK:	369	case EIO_READLINK:
481	if (req->result > 0)	370	if (req->result > 0)
482	{	371	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
483	SvCUR_set (req->sv1, req->result);
484	*SvEND (req->sv1) = 0;
485	PUSHs (req->sv1);
486	}
487	break;	372	break;
488		373
489	case REQ_STAT:	374	case EIO_STAT:
490	case REQ_LSTAT:	375	case EIO_LSTAT:
491	case REQ_FSTAT:	376	case EIO_FSTAT:
492	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	377	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
493	PL_laststatval = req->result;	378	PL_laststatval = req->result;
494	PL_statcache = *(Stat_t *)(req->ptr2);	379	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
495	PUSHs (sv_2mortal (newSViv (req->result)));	380	PUSHs (sv_2mortal (newSViv (req->result)));
496	break;	381	break;
497		382
498	case REQ_READ:	383	case EIO_READ:
		384	{
499	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	385	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
500	*SvEND (req->sv1) = 0;	386	*SvEND (req->sv2) = 0;
		387	SvPOK_only (req->sv2);
		388	SvSETMAGIC (req->sv2);
501	PUSHs (sv_2mortal (newSViv (req->result)));	389	PUSHs (sv_2mortal (newSViv (req->result)));
		390	}
502	break;	391	break;
		392
		393	case EIO_DUP2:
		394	if (req->result > 0)
		395	req->result = 0;
		396	/* FALLTHROUGH */
503		397
504	default:	398	default:
505	PUSHs (sv_2mortal (newSViv (req->result)));	399	PUSHs (sv_2mortal (newSViv (req->result)));
506	break;	400	break;
507	}	401	}
508		402
509	errno = req->errorno;	403	errno = req->errorno;
510		404
511	PUTBACK;	405	PUTBACK;
512	call_sv (req->callback, G_VOID | G_EVAL);	406	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
513	SPAGAIN;	407	SPAGAIN;
514		408
515	FREETMPS;	409	FREETMPS;
516	LEAVE;	410	LEAVE;
		411
		412	PUTBACK;
517	}	413	}
518		414
519	if (req->grp)
520	{
521	aio_req grp = req->grp;
522
523	/* unlink request */
524	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
525	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
526
527	if (grp->grp_first == req)
528	grp->grp_first = req->grp_next;
529
530	aio_grp_dec (grp);
531	}
532
533	return !SvTRUE (ERRSV);	415	return !!SvTRUE (ERRSV);
534	}	416	}
535		417
536	static void req_free (aio_req req)	418	static void req_destroy (aio_req req)
537	{	419	{
538	if (req->self)	420	if (req->self)
539	{	421	{
540	sv_unmagic (req->self, PERL_MAGIC_ext);	422	sv_unmagic (req->self, PERL_MAGIC_ext);
541	SvREFCNT_dec (req->self);	423	SvREFCNT_dec (req->self);
542	}	424	}
543		425
544	SvREFCNT_dec (req->fh);
545	SvREFCNT_dec (req->sv1);	426	SvREFCNT_dec (req->sv1);
546	SvREFCNT_dec (req->sv2);	427	SvREFCNT_dec (req->sv2);
547	SvREFCNT_dec (req->callback);	428	SvREFCNT_dec (req->callback);
548		429
549	if (req->flags & FLAG_PTR2_FREE)
550	free (req->ptr2);
551
552	Safefree (req);	430	Safefree (req);
553	}	431	}
554		432
555	static void req_cancel_subs (aio_req grp)	433	static void req_cancel_subs (aio_req grp)
556	{	434	{
557	aio_req sub;	435	aio_req sub;
558		436
559	if (grp->type != REQ_GROUP)	437	if (grp->type != EIO_GROUP)
560	return;	438	return;
561		439
562	SvREFCNT_dec (grp->sv2);	440	SvREFCNT_dec (grp->sv2);
563	grp->sv2 = 0;	441	grp->sv2 = 0;
564		442
565	for (sub = grp->grp_first; sub; sub = sub->grp_next)	443	eio_grp_cancel (grp);
566	req_cancel (sub);
567	}	444	}
568		445
569	static void req_cancel (aio_req req)	446	#ifdef USE_SOCKETS_AS_HANDLES
570	{	447	# define TO_SOCKET(x) (win32_get_osfhandle (x))
571	req->flags |= FLAG_CANCELLED;	448	#else
		449	# define TO_SOCKET(x) (x)
		450	#endif
572		451
573	req_cancel_subs (req);	452	static void
574	}	453	create_respipe (void)
575
576	static void *aio_proc(void *arg);
577
578	static void start_thread (void)
579	{	454	{
580	worker *wrk = calloc (1, sizeof (worker));	455	int old_readfd = respipe [0];
581		456
582	if (!wrk)	457	if (respipe [1] >= 0)
583	croak ("unable to allocate worker thread data");	458	respipe_close (TO_SOCKET (respipe [1]));
584		459
585	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");
586		466
587	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))	467	if (old_readfd >= 0)
588	{	468	{
589	wrk->prev = &wrk_first;	469	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
590	wrk->next = wrk_first.next;	470	croak ("unable to initialize result pipe(2)");
591	wrk_first.next->prev = wrk;	471
592	wrk_first.next = wrk;	472	respipe_close (respipe [0]);
593	++started;	473	respipe [0] = old_readfd;
594	}	474	}
595	else
596	free (wrk);
597		475
598	UNLOCK (wrklock);	476	#ifdef _WIN32
599	}	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)");
600		485
601	static void maybe_start_thread ()	486	respipe_osf [0] = TO_SOCKET (respipe [0]);
602	{	487	respipe_osf [1] = TO_SOCKET (respipe [1]);
603	if (get_nthreads () >= wanted)
604	return;
605
606	/* todo: maybe use idle here, but might be less exact */
607	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
608	return;
609
610	start_thread ();
611	}	488	}
612		489
613	static void req_send (aio_req req)
614	{
615	block_sig ();
616
617	++nreqs;
618
619	LOCK (reqlock);
620	++nready;
621	reqq_push (&req_queue, req);
622	COND_SIGNAL (reqwait);
623	UNLOCK (reqlock);
624
625	unblock_sig ();
626
627	maybe_start_thread ();
628	}
629
630	static void end_thread (void)
631	{
632	aio_req req;
633
634	Newz (0, req, 1, aio_cb);
635
636	req->type = REQ_QUIT;
637	req->pri = PRI_MAX + PRI_BIAS;
638
639	LOCK (reqlock);
640	reqq_push (&req_queue, req);
641	COND_SIGNAL (reqwait);
642	UNLOCK (reqlock);
643
644	LOCK (wrklock);
645	--started;
646	UNLOCK (wrklock);
647	}
648
649	static void set_max_idle (int nthreads)
650	{
651	if (WORDACCESS_UNSAFE) LOCK (reqlock);
652	max_idle = nthreads <= 0 ? 1 : nthreads;
653	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
654	}
655
656	static void min_parallel (int nthreads)
657	{
658	if (wanted < nthreads)
659	wanted = nthreads;
660	}
661
662	static void max_parallel (int nthreads)
663	{
664	if (wanted > nthreads)
665	wanted = nthreads;
666
667	while (started > wanted)
668	end_thread ();
669	}
670
671	static void poll_wait ()	490	static void poll_wait (void)
672	{	491	{
673	fd_set rfd;	492	fd_set rfd;
674		493
675	while (nreqs)	494	while (eio_nreqs ())
676	{	495	{
677	int size;	496	int size;
678	if (WORDACCESS_UNSAFE) LOCK (reslock);	497
		498	X_LOCK (reslock);
679	size = res_queue.size;	499	size = res_queue.size;
680	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	500	X_UNLOCK (reslock);
681		501
682	if (size)	502	if (size)
683	return;	503	return;
684		504
685	maybe_start_thread ();	505	etp_maybe_start_thread ();
686		506
687	FD_ZERO(&rfd);	507	FD_ZERO (&rfd);
688	FD_SET(respipe [0], &rfd);	508	FD_SET (respipe [0], &rfd);
689		509
690	select (respipe [0] + 1, &rfd, 0, 0, 0);	510	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
691	}	511	}
692	}	512	}
693		513
694	static int poll_cb ()	514	static int poll_cb (void)
695	{	515	{
696	dSP;
697	int count = 0;
698	int maxreqs = max_poll_reqs;
699	int do_croak = 0;
700	struct timeval tv_start, tv_now;
701	aio_req req;
702
703	if (max_poll_time)
704	gettimeofday (&tv_start, 0);
705
706	block_sig ();
707
708	for (;;)	516	for (;;)
709	{	517	{
710	for (;;)	518	int res = eio_poll ();
711	{
712	maybe_start_thread ();
713		519
714	LOCK (reslock);	520	if (res > 0)
715	req = reqq_shift (&res_queue);
716
717	if (req)
718	{
719	--npending;
720
721	if (!res_queue.size)
722	{
723	/* read any signals sent by the worker threads */
724	char buf [4];
725	while (read (respipe [0], buf, 4) == 4)
726	;
727	}
728	}
729
730	UNLOCK (reslock);
731
732	if (!req)
733	break;
734
735	--nreqs;
736
737	if (req->type == REQ_GROUP && req->size)
738	{
739	req->int1 = 1; /* mark request as delayed */
740	continue;
741	}
742	else
743	{
744	if (!req_invoke (req))
745	{
746	req_free (req);
747	unblock_sig ();
748	croak (0);	521	croak (0);
749	}
750		522
751	count++;	523	if (!max_outstanding || max_outstanding > eio_nreqs ())
752	}	524	return res;
753
754	req_free (req);
755
756	if (maxreqs && !--maxreqs)
757	break;
758
759	if (max_poll_time)
760	{
761	gettimeofday (&tv_now, 0);
762
763	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
764	break;
765	}
766	}
767
768	if (nreqs <= max_outstanding)
769	break;
770		525
771	poll_wait ();	526	poll_wait ();
772
773	++maxreqs;
774	}	527	}
775
776	unblock_sig ();
777	return count;
778	}
779
780	static void create_pipe ()
781	{
782	if (pipe (respipe))
783	croak ("unable to initialize result pipe");
784
785	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
786	croak ("cannot set result pipe to nonblocking mode");
787
788	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
789	croak ("cannot set result pipe to nonblocking mode");
790	}
791
792	/*****************************************************************************/
793	/* work around various missing functions */
794
795	#if !HAVE_PREADWRITE
796	# define pread aio_pread
797	# define pwrite aio_pwrite
798
799	/*
800	* make our pread/pwrite safe against themselves, but not against
801	* normal read/write by using a mutex. slows down execution a lot,
802	* but that's your problem, not mine.
803	*/
804	static mutex_t preadwritelock = MUTEX_INIT;
805
806	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
807	{
808	ssize_t res;
809	off_t ooffset;
810
811	LOCK (preadwritelock);
812	ooffset = lseek (fd, 0, SEEK_CUR);
813	lseek (fd, offset, SEEK_SET);
814	res = read (fd, buf, count);
815	lseek (fd, ooffset, SEEK_SET);
816	UNLOCK (preadwritelock);
817
818	return res;
819	}
820
821	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
822	{
823	ssize_t res;
824	off_t ooffset;
825
826	LOCK (preadwritelock);
827	ooffset = lseek (fd, 0, SEEK_CUR);
828	lseek (fd, offset, SEEK_SET);
829	res = write (fd, buf, count);
830	lseek (fd, offset, SEEK_SET);
831	UNLOCK (preadwritelock);
832
833	return res;
834	}
835	#endif
836
837	#if !HAVE_FDATASYNC
838	# define fdatasync fsync
839	#endif
840
841	#if !HAVE_READAHEAD
842	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
843
844	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
845	{
846	dBUF;
847
848	while (count > 0)
849	{
850	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
851
852	pread (fd, aio_buf, len, offset);
853	offset += len;
854	count -= len;
855	}
856
857	errno = 0;
858	}
859
860	#endif
861
862	#if !HAVE_READDIR_R
863	# define readdir_r aio_readdir_r
864
865	static mutex_t readdirlock = MUTEX_INIT;
866
867	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
868	{
869	struct dirent *e;
870	int errorno;
871
872	LOCK (readdirlock);
873
874	e = readdir (dirp);
875	errorno = errno;
876
877	if (e)
878	{
879	*res = ent;
880	strcpy (ent->d_name, e->d_name);
881	}
882	else
883	*res = 0;
884
885	UNLOCK (readdirlock);
886
887	errno = errorno;
888	return e ? 0 : -1;
889	}
890	#endif
891
892	/* sendfile always needs emulation */
893	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
894	{
895	ssize_t res;
896
897	if (!count)
898	return 0;
899
900	#if HAVE_SENDFILE
901	# if __linux
902	res = sendfile (ofd, ifd, &offset, count);
903
904	# elif __freebsd
905	/*
906	* Of course, the freebsd sendfile is a dire hack with no thoughts
907	* wasted on making it similar to other I/O functions.
908	*/
909	{
910	off_t sbytes;
911	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
912
913	if (res < 0 && sbytes)
914	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
915	res = sbytes;
916	}
917
918	# elif __hpux
919	res = sendfile (ofd, ifd, offset, count, 0, 0);
920
921	# elif __solaris
922	{
923	struct sendfilevec vec;
924	size_t sbytes;
925
926	vec.sfv_fd = ifd;
927	vec.sfv_flag = 0;
928	vec.sfv_off = offset;
929	vec.sfv_len = count;
930
931	res = sendfilev (ofd, &vec, 1, &sbytes);
932
933	if (res < 0 && sbytes)
934	res = sbytes;
935	}
936
937	# endif
938	#else
939	res = -1;
940	errno = ENOSYS;
941	#endif
942
943	if (res < 0
944	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
945	#if __solaris
946	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
947	#endif
948	)
949	)
950	{
951	/* emulate sendfile. this is a major pain in the ass */
952	dBUF;
953
954	res = 0;
955
956	while (count)
957	{
958	ssize_t cnt;
959
960	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
961
962	if (cnt <= 0)
963	{
964	if (cnt && !res) res = -1;
965	break;
966	}
967
968	cnt = write (ofd, aio_buf, cnt);
969
970	if (cnt <= 0)
971	{
972	if (cnt && !res) res = -1;
973	break;
974	}
975
976	offset += cnt;
977	res += cnt;
978	count -= cnt;
979	}
980	}
981
982	return res;
983	}
984
985	/* read a full directory */
986	static void scandir_ (aio_req req, worker *self)
987	{
988	DIR *dirp;
989	union
990	{
991	struct dirent d;
992	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
993	} *u;
994	struct dirent *entp;
995	char *name, *names;
996	int memlen = 4096;
997	int memofs = 0;
998	int res = 0;
999	int errorno;
1000
1001	LOCK (wrklock);
1002	self->dirp = dirp = opendir (req->ptr1);
1003	self->dbuf = u = malloc (sizeof (*u));
1004	req->flags |= FLAG_PTR2_FREE;
1005	req->ptr2 = names = malloc (memlen);
1006	UNLOCK (wrklock);
1007
1008	if (dirp && u && names)
1009	for (;;)
1010	{
1011	errno = 0;
1012	readdir_r (dirp, &u->d, &entp);
1013
1014	if (!entp)
1015	break;
1016
1017	name = entp->d_name;
1018
1019	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1020	{
1021	int len = strlen (name) + 1;
1022
1023	res++;
1024
1025	while (memofs + len > memlen)
1026	{
1027	memlen *= 2;
1028	LOCK (wrklock);
1029	req->ptr2 = names = realloc (names, memlen);
1030	UNLOCK (wrklock);
1031
1032	if (!names)
1033	break;
1034	}
1035
1036	memcpy (names + memofs, name, len);
1037	memofs += len;
1038	}
1039	}
1040
1041	if (errno)
1042	res = -1;
1043
1044	req->result = res;
1045	}
1046
1047	/*****************************************************************************/
1048
1049	static void *aio_proc (void *thr_arg)
1050	{
1051	aio_req req;
1052	struct timespec ts;
1053	worker *self = (worker *)thr_arg;
1054
1055	/* try to distribute timeouts somewhat evenly */
1056	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1057	* (1000000000UL / 1024UL);
1058
1059	for (;;)
1060	{
1061	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1062
1063	LOCK (reqlock);
1064
1065	for (;;)
1066	{
1067	self->req = req = reqq_shift (&req_queue);
1068
1069	if (req)
1070	break;
1071
1072	++idle;
1073
1074	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1075	== ETIMEDOUT)
1076	{
1077	if (idle > max_idle)
1078	{
1079	--idle;
1080	UNLOCK (reqlock);
1081	LOCK (wrklock);
1082	--started;
1083	UNLOCK (wrklock);
1084	goto quit;
1085	}
1086
1087	/* we are allowed to idle, so do so without any timeout */
1088	COND_WAIT (reqwait, reqlock);
1089	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1090	}
1091
1092	--idle;
1093	}
1094
1095	--nready;
1096
1097	UNLOCK (reqlock);
1098
1099	errno = 0; /* strictly unnecessary */
1100
1101	if (!(req->flags & FLAG_CANCELLED))
1102	switch (req->type)
1103	{
1104	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1105	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1106
1107	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1108	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1109
1110	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1111	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1112	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1113
1114	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1115	case REQ_CLOSE: req->result = close (req->int1); break;
1116	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1117	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1118	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1119	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1120	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1121	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1122	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1123	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1124
1125	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1126	case REQ_FSYNC: req->result = fsync (req->int1); break;
1127	case REQ_READDIR: scandir_ (req, self); break;
1128
1129	case REQ_BUSY:
1130	{
1131	struct timeval tv;
1132
1133	tv.tv_sec = req->int1;
1134	tv.tv_usec = req->int2;
1135
1136	req->result = select (0, 0, 0, 0, &tv);
1137	}
1138
1139	case REQ_GROUP:
1140	case REQ_NOP:
1141	break;
1142
1143	case REQ_QUIT:
1144	goto quit;
1145
1146	default:
1147	req->result = ENOSYS;
1148	break;
1149	}
1150
1151	req->errorno = errno;
1152
1153	LOCK (reslock);
1154
1155	++npending;
1156
1157	if (!reqq_push (&res_queue, req))
1158	{
1159	/* write a dummy byte to the pipe so fh becomes ready */
1160	write (respipe [1], &respipe, 1);
1161
1162	/* optionally signal the main thread asynchronously */
1163	if (main_sig)
1164	pthread_kill (main_tid, main_sig);
1165	}
1166
1167	self->req = 0;
1168	worker_clear (self);
1169
1170	UNLOCK (reslock);
1171	}
1172
1173	quit:
1174	LOCK (wrklock);
1175	worker_free (self);
1176	UNLOCK (wrklock);
1177
1178	return 0;
1179	}
1180
1181	/*****************************************************************************/
1182
1183	static void atfork_prepare (void)
1184	{
1185	LOCK (wrklock);
1186	LOCK (reqlock);
1187	LOCK (reslock);
1188	#if !HAVE_PREADWRITE
1189	LOCK (preadwritelock);
1190	#endif
1191	#if !HAVE_READDIR_R
1192	LOCK (readdirlock);
1193	#endif
1194	}
1195
1196	static void atfork_parent (void)
1197	{
1198	#if !HAVE_READDIR_R
1199	UNLOCK (readdirlock);
1200	#endif
1201	#if !HAVE_PREADWRITE
1202	UNLOCK (preadwritelock);
1203	#endif
1204	UNLOCK (reslock);
1205	UNLOCK (reqlock);
1206	UNLOCK (wrklock);
1207	}	528	}
1208		529
1209	static void atfork_child (void)	530	static void atfork_child (void)
1210	{	531	{
1211	aio_req prv;
1212
1213	while (prv = reqq_shift (&req_queue))
1214	req_free (prv);
1215
1216	while (prv = reqq_shift (&res_queue))
1217	req_free (prv);
1218
1219	while (wrk_first.next != &wrk_first)
1220	{
1221	worker *wrk = wrk_first.next;
1222
1223	if (wrk->req)
1224	req_free (wrk->req);
1225
1226	worker_clear (wrk);
1227	worker_free (wrk);
1228	}
1229
1230	started = 0;
1231	idle = 0;
1232	nreqs = 0;
1233	nready = 0;
1234	npending = 0;
1235
1236	close (respipe [0]);
1237	close (respipe [1]);
1238	create_pipe ();	532	create_respipe ();
		533	}
1239		534
1240	atfork_parent ();	535	static SV *
		536	get_cb (SV *cb_sv)
		537	{
		538	SvGETMAGIC (cb_sv);
		539	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1241	}	540	}
1242		541
1243	#define dREQ \	542	#define dREQ \
		543	SV *cb_cv; \
1244	aio_req req; \	544	aio_req req; \
1245	int req_pri = next_pri; \	545	int req_pri = next_pri; \
1246	next_pri = DEFAULT_PRI + PRI_BIAS; \	546	next_pri = EIO_PRI_DEFAULT; \
1247	\	547	\
1248	if (SvOK (callback) && !SvROK (callback)) \	548	cb_cv = get_cb (callback); \
1249	croak ("callback must be undef or of reference type"); \
1250	\	549	\
1251	Newz (0, req, 1, aio_cb); \	550	Newz (0, req, 1, eio_req); \
1252	if (!req) \	551	if (!req) \
1253	croak ("out of memory during aio_req allocation"); \	552	croak ("out of memory during eio_req allocation"); \
1254	\	553	\
1255	req->callback = newSVsv (callback); \	554	req->callback = SvREFCNT_inc (cb_cv); \
1256	req->pri = req_pri	555	req->pri = req_pri
1257		556
1258	#define REQ_SEND \	557	#define REQ_SEND \
		558	PUTBACK; \
1259	req_send (req); \	559	req_submit (req); \
		560	SPAGAIN; \
1260	\	561	\
1261	if (GIMME_V != G_VOID) \	562	if (GIMME_V != G_VOID) \
1262	XPUSHs (req_sv (req, AIO_REQ_KLASS));	563	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1263		564
1264	MODULE = IO::AIO PACKAGE = IO::AIO	565	MODULE = IO::AIO PACKAGE = IO::AIO
1265		566
1266	PROTOTYPES: ENABLE	567	PROTOTYPES: ENABLE
1267		568
1268	BOOT:	569	BOOT:
1269	{	570	{
		571	static const struct {
		572	const char *name;
		573	IV iv;
		574	} *civ, const_iv[] = {
		575	# define const_iv(name, value) { # name, (IV) value },
		576	# define const_eio(name) { # name, (IV) EIO_ ## name },
		577	const_iv (EXDEV , EXDEV)
		578	const_iv (ENOSYS , ENOSYS)
		579	const_iv (O_RDONLY, O_RDONLY)
		580	const_iv (O_WRONLY, O_WRONLY)
		581	const_iv (O_CREAT , O_CREAT)
		582	const_iv (O_TRUNC , O_TRUNC)
		583	#ifndef _WIN32
		584	const_iv (S_IFIFO , S_IFIFO)
		585	#endif
		586	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		587	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		588	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		589	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		590	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		591	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		592
		593	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		594	const_eio (SYNC_FILE_RANGE_WRITE)
		595	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		596
		597	const_eio (READDIR_DENTS)
		598	const_eio (READDIR_DIRS_FIRST)
		599	const_eio (READDIR_STAT_ORDER)
		600	const_eio (READDIR_FOUND_UNKNOWN)
		601
		602	const_eio (DT_UNKNOWN)
		603	const_eio (DT_FIFO)
		604	const_eio (DT_CHR)
		605	const_eio (DT_DIR)
		606	const_eio (DT_BLK)
		607	const_eio (DT_REG)
		608	const_eio (DT_LNK)
		609	const_eio (DT_SOCK)
		610	const_eio (DT_WHT)
		611	};
		612
1270	HV *stash = gv_stashpv ("IO::AIO", 1);	613	stash = gv_stashpv ("IO::AIO", 1);
1271		614
1272	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	615	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1273	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	616	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
1274	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1275	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1276	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1277	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1278	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1279		617
1280	create_pipe ();	618	create_respipe ();
1281	ATFORK (atfork_prepare, atfork_parent, atfork_child);	619
		620	if (eio_init (want_poll, done_poll) < 0)
		621	croak ("IO::AIO: unable to initialise eio library");
		622
		623	/* atfork child called in fifo order, so before eio's handler */
		624	X_THREAD_ATFORK (0, 0, atfork_child);
1282	}	625	}
1283		626
1284	void	627	void
1285	max_poll_reqs (int nreqs)	628	max_poll_reqs (int nreqs)
1286	PROTOTYPE: $	629	PROTOTYPE: $
1287	CODE:	630	CODE:
1288	max_poll_reqs = nreqs;	631	eio_set_max_poll_reqs (nreqs);
1289		632
1290	void	633	void
1291	max_poll_time (double nseconds)	634	max_poll_time (double nseconds)
1292	PROTOTYPE: $	635	PROTOTYPE: $
1293	CODE:	636	CODE:
1294	max_poll_time = nseconds * AIO_TICKS;	637	eio_set_max_poll_time (nseconds);
1295		638
1296	void	639	void
1297	min_parallel (int nthreads)	640	min_parallel (int nthreads)
1298	PROTOTYPE: $	641	PROTOTYPE: $
		642	CODE:
		643	eio_set_min_parallel (nthreads);
1299		644
1300	void	645	void
1301	max_parallel (int nthreads)	646	max_parallel (int nthreads)
1302	PROTOTYPE: $	647	PROTOTYPE: $
		648	CODE:
		649	eio_set_max_parallel (nthreads);
1303		650
1304	void	651	void
1305	max_idle (int nthreads)	652	max_idle (int nthreads)
1306	PROTOTYPE: $	653	PROTOTYPE: $
1307	CODE:	654	CODE:
1308	set_max_idle (nthreads);	655	eio_set_max_idle (nthreads);
1309		656
1310	int	657	void
1311	max_outstanding (int maxreqs)	658	max_outstanding (int maxreqs)
1312	PROTOTYPE: $	659	PROTOTYPE: $
1313	CODE:	660	CODE:
1314	RETVAL = max_outstanding;
1315	max_outstanding = maxreqs;	661	max_outstanding = maxreqs;
1316	OUTPUT:
1317	RETVAL
1318		662
1319	void	663	void
1320	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	664	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1321	SV8 * pathname
1322	int flags
1323	int mode
1324	SV * callback
1325	PROTOTYPE: $$$;$	665	PROTOTYPE: $$$;$
1326	PPCODE:	666	PPCODE:
1327	{	667	{
1328	dREQ;	668	dREQ;
1329		669
1330	req->type = REQ_OPEN;	670	req->type = EIO_OPEN;
1331	req->sv1 = newSVsv (pathname);	671	req->sv1 = newSVsv (pathname);
1332	req->ptr1 = SvPVbyte_nolen (req->sv1);	672	req->ptr1 = SvPVbyte_nolen (req->sv1);
1333	req->int1 = flags;	673	req->int1 = flags;
1334	req->mode = mode;	674	req->int2 = mode;
1335		675
1336	REQ_SEND;	676	REQ_SEND;
1337	}	677	}
1338		678
1339	void	679	void
1340	aio_close (fh,callback=&PL_sv_undef)	680	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1341	SV * fh
1342	SV * callback
1343	PROTOTYPE: $;$	681	PROTOTYPE: $;$
1344	ALIAS:	682	ALIAS:
1345	aio_close = REQ_CLOSE
1346	aio_fsync = REQ_FSYNC	683	aio_fsync = EIO_FSYNC
1347	aio_fdatasync = REQ_FDATASYNC	684	aio_fdatasync = EIO_FDATASYNC
1348	PPCODE:	685	PPCODE:
1349	{	686	{
		687	int fd = s_fileno_croak (fh, 0);
1350	dREQ;	688	dREQ;
1351		689
1352	req->type = ix;	690	req->type = ix;
1353	req->fh = newSVsv (fh);	691	req->sv1 = newSVsv (fh);
1354	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	692	req->int1 = fd;
1355		693
1356	REQ_SEND (req);	694	REQ_SEND (req);
1357	}	695	}
1358		696
1359	void	697	void
		698	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		699	PROTOTYPE: $$$$;$
		700	PPCODE:
		701	{
		702	int fd = s_fileno_croak (fh, 0);
		703	dREQ;
		704
		705	req->type = EIO_SYNC_FILE_RANGE;
		706	req->sv1 = newSVsv (fh);
		707	req->int1 = fd;
		708	req->offs = offset;
		709	req->size = nbytes;
		710	req->int2 = flags;
		711
		712	REQ_SEND (req);
		713	}
		714
		715	void
		716	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		717	PROTOTYPE: $;$
		718	PPCODE:
		719	{
		720	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		721	int fd = s_fileno_croak (fh, 0);
		722	dREQ;
		723
		724	if (close_pipe < 0)
		725	{
		726	int pipefd [2];
		727
		728	if (pipe (pipefd) < 0
		729	|| close (pipefd [1]) < 0
		730	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		731	abort (); /*D*/
		732
		733	close_pipe = pipefd [0];
		734	}
		735
		736	req->type = EIO_DUP2;
		737	req->int1 = close_pipe;
		738	req->sv2 = newSVsv (fh);
		739	req->int2 = fd;
		740
		741	REQ_SEND (req);
		742	}
		743
		744	void
1360	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	745	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1361	SV * fh
1362	UV offset
1363	UV length
1364	SV8 * data
1365	UV dataoffset
1366	SV * callback
1367	ALIAS:	746	ALIAS:
1368	aio_read = REQ_READ	747	aio_read = EIO_READ
1369	aio_write = REQ_WRITE	748	aio_write = EIO_WRITE
1370	PROTOTYPE: $$$$$;$	749	PROTOTYPE: $$$$$;$
1371	PPCODE:	750	PPCODE:
1372	{	751	{
1373	STRLEN svlen;	752	STRLEN svlen;
		753	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1374	char *svptr = SvPVbyte (data, svlen);	754	char *svptr = SvPVbyte (data, svlen);
1375		755	UV len = SvUV (length);
1376	SvUPGRADE (data, SVt_PV);
1377	SvPOK_on (data);
1378		756
1379	if (dataoffset < 0)	757	if (dataoffset < 0)
1380	dataoffset += svlen;	758	dataoffset += svlen;
1381		759
1382	if (dataoffset < 0 || dataoffset > svlen)	760	if (dataoffset < 0 || dataoffset > svlen)
1383	croak ("data offset outside of string");	761	croak ("dataoffset outside of data scalar");
1384		762
1385	if (ix == REQ_WRITE)	763	if (ix == EIO_WRITE)
1386	{	764	{
1387	/* write: check length and adjust. */	765	/* write: check length and adjust. */
1388	if (length < 0 || length + dataoffset > svlen)	766	if (!SvOK (length) || len + dataoffset > svlen)
1389	length = svlen - dataoffset;	767	len = svlen - dataoffset;
1390	}	768	}
1391	else	769	else
1392	{	770	{
1393	/* read: grow scalar as necessary */	771	/* read: check type and grow scalar as necessary */
		772	SvUPGRADE (data, SVt_PV);
1394	svptr = SvGROW (data, length + dataoffset + 1);	773	svptr = SvGROW (data, len + dataoffset + 1);
1395	}	774	}
1396
1397	if (length < 0)
1398	croak ("length must not be negative");
1399		775
1400	{	776	{
1401	dREQ;	777	dREQ;
1402		778
1403	req->type = ix;	779	req->type = ix;
1404	req->fh = newSVsv (fh);	780	req->sv1 = newSVsv (fh);
1405	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	781	req->int1 = fd;
1406	: IoOFP (sv_2io (fh)));	782	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1407	req->offs = offset;
1408	req->size = length;	783	req->size = len;
1409	req->sv1 = SvREFCNT_inc (data);	784	req->sv2 = SvREFCNT_inc (data);
1410	req->ptr1 = (char *)svptr + dataoffset;	785	req->ptr2 = (char *)svptr + dataoffset;
1411	req->stroffset = dataoffset;	786	req->stroffset = dataoffset;
1412		787
1413	if (!SvREADONLY (data))	788	if (!SvREADONLY (data))
1414	{	789	{
1415	SvREADONLY_on (data);	790	SvREADONLY_on (data);
1416	req->flags |= FLAG_SV1_RO_OFF;	791	req->flags |= FLAG_SV2_RO_OFF;
1417	}	792	}
1418		793
1419	REQ_SEND;	794	REQ_SEND;
1420	}	795	}
1421	}	796	}
1422		797
1423	void	798	void
1424	aio_readlink (path,callback=&PL_sv_undef)	799	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1425	SV8 * path
1426	SV * callback
1427	PROTOTYPE: $$;$	800	PROTOTYPE: $$;$
1428	PPCODE:	801	PPCODE:
1429	{	802	{
1430	SV *data;	803	SV *data;
1431	dREQ;	804	dREQ;
1432		805
1433	data = newSV (NAME_MAX);
1434	SvPOK_on (data);
1435
1436	req->type = REQ_READLINK;	806	req->type = EIO_READLINK;
1437	req->fh = newSVsv (path);	807	req->sv1 = newSVsv (path);
1438	req->ptr2 = SvPVbyte_nolen (req->fh);	808	req->ptr1 = SvPVbyte_nolen (req->sv1);
1439	req->sv1 = data;
1440	req->ptr1 = SvPVbyte_nolen (data);
1441		809
1442	REQ_SEND;	810	REQ_SEND;
1443	}	811	}
1444		812
1445	void	813	void
1446	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	814	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1447	SV * out_fh
1448	SV * in_fh
1449	UV in_offset
1450	UV length
1451	SV * callback
1452	PROTOTYPE: $$$$;$	815	PROTOTYPE: $$$$;$
1453	PPCODE:	816	PPCODE:
1454	{	817	{
		818	int ifd = s_fileno_croak (in_fh , 0);
		819	int ofd = s_fileno_croak (out_fh, 1);
1455	dREQ;	820	dREQ;
1456		821
1457	req->type = REQ_SENDFILE;	822	req->type = EIO_SENDFILE;
1458	req->fh = newSVsv (out_fh);	823	req->sv1 = newSVsv (out_fh);
1459	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	824	req->int1 = ofd;
1460	req->sv2 = newSVsv (in_fh);	825	req->sv2 = newSVsv (in_fh);
1461	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	826	req->int2 = ifd;
1462	req->offs = in_offset;	827	req->offs = in_offset;
1463	req->size = length;	828	req->size = length;
1464		829
1465	REQ_SEND;	830	REQ_SEND;
1466	}	831	}
1467		832
1468	void	833	void
1469	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	834	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1470	SV * fh
1471	UV offset
1472	IV length
1473	SV * callback
1474	PROTOTYPE: $$$;$	835	PROTOTYPE: $$$;$
1475	PPCODE:	836	PPCODE:
1476	{	837	{
		838	int fd = s_fileno_croak (fh, 0);
1477	dREQ;	839	dREQ;
1478		840
1479	req->type = REQ_READAHEAD;	841	req->type = EIO_READAHEAD;
1480	req->fh = newSVsv (fh);	842	req->sv1 = newSVsv (fh);
1481	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	843	req->int1 = fd;
1482	req->offs = offset;	844	req->offs = offset;
1483	req->size = length;	845	req->size = length;
1484		846
1485	REQ_SEND;	847	REQ_SEND;
1486	}	848	}
1487		849
1488	void	850	void
1489	aio_stat (fh_or_path,callback=&PL_sv_undef)	851	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1490	SV8 * fh_or_path
1491	SV * callback
1492	ALIAS:	852	ALIAS:
1493	aio_stat = REQ_STAT	853	aio_stat = EIO_STAT
1494	aio_lstat = REQ_LSTAT	854	aio_lstat = EIO_LSTAT
1495	PPCODE:	855	PPCODE:
1496	{	856	{
1497	dREQ;	857	dREQ;
1498		858
1499	req->ptr2 = malloc (sizeof (Stat_t));	859	req->sv1 = newSVsv (fh_or_path);
1500	if (!req->ptr2)
1501	{
1502	req_free (req);
1503	croak ("out of memory during aio_stat statdata allocation");
1504	}
1505		860
1506	req->flags |= FLAG_PTR2_FREE;	861	if (SvPOK (req->sv1))
1507
1508	if (SvPOK (fh_or_path))
1509	{	862	{
1510	req->type = ix;	863	req->type = ix;
1511	req->sv1 = newSVsv (fh_or_path);
1512	req->ptr1 = SvPVbyte_nolen (req->sv1);	864	req->ptr1 = SvPVbyte_nolen (req->sv1);
1513	}	865	}
1514	else	866	else
1515	{	867	{
1516	req->type = REQ_FSTAT;	868	req->type = EIO_FSTAT;
1517	req->fh = newSVsv (fh_or_path);
1518	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	869	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1519	}	870	}
1520		871
1521	REQ_SEND;	872	REQ_SEND;
1522	}	873	}
1523		874
1524	void	875	void
		876	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		877	PPCODE:
		878	{
		879	dREQ;
		880
		881	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		882	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		883	req->sv1 = newSVsv (fh_or_path);
		884
		885	if (SvPOK (req->sv1))
		886	{
		887	req->type = EIO_UTIME;
		888	req->ptr1 = SvPVbyte_nolen (req->sv1);
		889	}
		890	else
		891	{
		892	req->type = EIO_FUTIME;
		893	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		894	}
		895
		896	REQ_SEND;
		897	}
		898
		899	void
		900	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		901	PPCODE:
		902	{
		903	dREQ;
		904
		905	req->sv1 = newSVsv (fh_or_path);
		906	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		907
		908	if (SvPOK (req->sv1))
		909	{
		910	req->type = EIO_TRUNCATE;
		911	req->ptr1 = SvPVbyte_nolen (req->sv1);
		912	}
		913	else
		914	{
		915	req->type = EIO_FTRUNCATE;
		916	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		917	}
		918
		919	REQ_SEND;
		920	}
		921
		922	void
		923	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		924	ALIAS:
		925	aio_chmod = EIO_CHMOD
		926	aio_mkdir = EIO_MKDIR
		927	PPCODE:
		928	{
		929	dREQ;
		930
		931	req->int2 = mode;
		932	req->sv1 = newSVsv (fh_or_path);
		933
		934	if (SvPOK (req->sv1))
		935	{
		936	req->type = ix;
		937	req->ptr1 = SvPVbyte_nolen (req->sv1);
		938	}
		939	else
		940	{
		941	req->type = EIO_FCHMOD;
		942	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		943	}
		944
		945	REQ_SEND;
		946	}
		947
		948	void
		949	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		950	PPCODE:
		951	{
		952	dREQ;
		953
		954	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		955	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		956	req->sv1 = newSVsv (fh_or_path);
		957
		958	if (SvPOK (req->sv1))
		959	{
		960	req->type = EIO_CHOWN;
		961	req->ptr1 = SvPVbyte_nolen (req->sv1);
		962	}
		963	else
		964	{
		965	req->type = EIO_FCHOWN;
		966	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		967	}
		968
		969	REQ_SEND;
		970	}
		971
		972	void
		973	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		974	PPCODE:
		975	{
		976	dREQ;
		977
		978	req->type = EIO_READDIR;
		979	req->sv1 = newSVsv (pathname);
		980	req->ptr1 = SvPVbyte_nolen (req->sv1);
		981	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		982
		983	if (flags & EIO_READDIR_DENTS)
		984	req->int1 |= EIO_READDIR_CUSTOM2;
		985
		986	REQ_SEND;
		987	}
		988
		989	void
1525	aio_unlink (pathname,callback=&PL_sv_undef)	990	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1526	SV8 * pathname
1527	SV * callback
1528	ALIAS:	991	ALIAS:
1529	aio_unlink = REQ_UNLINK	992	aio_unlink = EIO_UNLINK
1530	aio_rmdir = REQ_RMDIR	993	aio_rmdir = EIO_RMDIR
1531	aio_readdir = REQ_READDIR	994	aio_readdir = EIO_READDIR
1532	PPCODE:	995	PPCODE:
1533	{	996	{
1534	dREQ;	997	dREQ;
1535		998
1536	req->type = ix;	999	req->type = ix;
…		…
1539		1002
1540	REQ_SEND;	1003	REQ_SEND;
1541	}	1004	}
1542		1005
1543	void	1006	void
1544	aio_mkdir (pathname,mode,callback=&PL_sv_undef)	1007	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1545	SV8 * pathname	1008	ALIAS:
1546	UV mode	1009	aio_link = EIO_LINK
1547	SV * callback	1010	aio_symlink = EIO_SYMLINK
		1011	aio_rename = EIO_RENAME
1548	PPCODE:	1012	PPCODE:
1549	{	1013	{
1550	dREQ;	1014	dREQ;
1551		1015
		1016	req->type = ix;
		1017	req->sv1 = newSVsv (oldpath);
		1018	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1019	req->sv2 = newSVsv (newpath);
		1020	req->ptr2 = SvPVbyte_nolen (req->sv2);
		1021
		1022	REQ_SEND;
		1023	}
		1024
		1025	void
		1026	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		1027	PPCODE:
		1028	{
		1029	dREQ;
		1030
1552	req->type = REQ_MKDIR;	1031	req->type = EIO_MKNOD;
1553	req->sv1 = newSVsv (pathname);	1032	req->sv1 = newSVsv (pathname);
1554	req->ptr1 = SvPVbyte_nolen (req->sv1);	1033	req->ptr1 = SvPVbyte_nolen (req->sv1);
1555	req->mode = mode;
1556
1557	REQ_SEND;
1558	}
1559
1560	void
1561	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1562	SV8 * oldpath
1563	SV8 * newpath
1564	SV * callback
1565	ALIAS:
1566	aio_link = REQ_LINK
1567	aio_symlink = REQ_SYMLINK
1568	aio_rename = REQ_RENAME
1569	PPCODE:
1570	{
1571	dREQ;
1572
1573	req->type = ix;
1574	req->fh = newSVsv (oldpath);
1575	req->ptr2 = SvPVbyte_nolen (req->fh);
1576	req->sv1 = newSVsv (newpath);
1577	req->ptr1 = SvPVbyte_nolen (req->sv1);
1578
1579	REQ_SEND;
1580	}
1581
1582	void
1583	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
1584	SV8 * pathname
1585	UV mode
1586	UV dev
1587	SV * callback
1588	PPCODE:
1589	{
1590	dREQ;
1591
1592	req->type = REQ_MKNOD;
1593	req->sv1 = newSVsv (pathname);
1594	req->ptr1 = SvPVbyte_nolen (req->sv1);
1595	req->mode = (mode_t)mode;	1034	req->int2 = (mode_t)mode;
1596	req->offs = dev;	1035	req->offs = dev;
1597		1036
1598	REQ_SEND;	1037	REQ_SEND;
1599	}	1038	}
1600		1039
1601	void	1040	void
1602	aio_busy (delay,callback=&PL_sv_undef)	1041	aio_busy (double delay, SV *callback=&PL_sv_undef)
1603	double delay
1604	SV * callback
1605	PPCODE:	1042	PPCODE:
1606	{	1043	{
1607	dREQ;	1044	dREQ;
1608		1045
1609	req->type = REQ_BUSY;	1046	req->type = EIO_BUSY;
1610	req->int1 = delay < 0. ? 0 : delay;	1047	req->nv1 = delay < 0. ? 0. : delay;
1611	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1612		1048
1613	REQ_SEND;	1049	REQ_SEND;
1614	}	1050	}
1615		1051
1616	void	1052	void
1617	aio_group (callback=&PL_sv_undef)	1053	aio_group (SV *callback=&PL_sv_undef)
1618	SV * callback
1619	PROTOTYPE: ;$	1054	PROTOTYPE: ;$
1620	PPCODE:	1055	PPCODE:
1621	{	1056	{
1622	dREQ;	1057	dREQ;
1623		1058
1624	req->type = REQ_GROUP;	1059	req->type = EIO_GROUP;
1625		1060
1626	req_send (req);	1061	req_submit (req);
1627	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1062	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1628	}	1063	}
1629		1064
1630	void	1065	void
1631	aio_nop (callback=&PL_sv_undef)	1066	aio_nop (SV *callback=&PL_sv_undef)
1632	SV * callback	1067	ALIAS:
		1068	aio_nop = EIO_NOP
		1069	aio_sync = EIO_SYNC
1633	PPCODE:	1070	PPCODE:
1634	{	1071	{
1635	dREQ;	1072	dREQ;
1636		1073
1637	req->type = REQ_NOP;	1074	req->type = ix;
1638		1075
1639	REQ_SEND;	1076	REQ_SEND;
1640	}	1077	}
1641		1078
1642	int	1079	int
1643	aioreq_pri (int pri = 0)	1080	aioreq_pri (int pri = 0)
1644	PROTOTYPE: ;$	1081	PROTOTYPE: ;$
1645	CODE:	1082	CODE:
1646	RETVAL = next_pri - PRI_BIAS;	1083	RETVAL = next_pri;
1647	if (items > 0)	1084	if (items > 0)
1648	{	1085	{
1649	if (pri < PRI_MIN) pri = PRI_MIN;	1086	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1650	if (pri > PRI_MAX) pri = PRI_MAX;	1087	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1651	next_pri = pri + PRI_BIAS;	1088	next_pri = pri;
1652	}	1089	}
1653	OUTPUT:	1090	OUTPUT:
1654	RETVAL	1091	RETVAL
1655		1092
1656	void	1093	void
1657	aioreq_nice (int nice = 0)	1094	aioreq_nice (int nice = 0)
1658	CODE:	1095	CODE:
1659	nice = next_pri - nice;	1096	nice = next_pri - nice;
1660	if (nice < PRI_MIN) nice = PRI_MIN;	1097	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1661	if (nice > PRI_MAX) nice = PRI_MAX;	1098	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1662	next_pri = nice + PRI_BIAS;	1099	next_pri = nice;
1663		1100
1664	void	1101	void
1665	flush ()	1102	flush ()
1666	PROTOTYPE:	1103	PROTOTYPE:
1667	CODE:	1104	CODE:
1668	while (nreqs)	1105	while (eio_nreqs ())
1669	{	1106	{
1670	poll_wait ();	1107	poll_wait ();
1671	poll_cb ();	1108	poll_cb ();
1672	}	1109	}
1673		1110
…		…
1700	poll_wait()	1137	poll_wait()
1701	PROTOTYPE:	1138	PROTOTYPE:
1702	CODE:	1139	CODE:
1703	poll_wait ();	1140	poll_wait ();
1704		1141
1705	void
1706	setsig (int signum = SIGIO)
1707	PROTOTYPE: ;$
1708	CODE:
1709	{
1710	if (block_sig_level)
1711	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1712
1713	LOCK (reslock);
1714	main_tid = pthread_self ();
1715	main_sig = signum;
1716	UNLOCK (reslock);
1717
1718	if (main_sig && npending)
1719	pthread_kill (main_tid, main_sig);
1720	}
1721
1722	void
1723	aio_block (SV *cb)
1724	PROTOTYPE: &
1725	PPCODE:
1726	{
1727	int count;
1728
1729	block_sig ();
1730	PUSHMARK (SP);
1731	PUTBACK;
1732	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1733	SPAGAIN;
1734	unblock_sig ();
1735
1736	if (SvTRUE (ERRSV))
1737	croak (0);
1738
1739	XSRETURN (count);
1740	}
1741
1742	int	1142	int
1743	nreqs()	1143	nreqs()
1744	PROTOTYPE:	1144	PROTOTYPE:
1745	CODE:	1145	CODE:
1746	RETVAL = nreqs;	1146	RETVAL = eio_nreqs ();
1747	OUTPUT:	1147	OUTPUT:
1748	RETVAL	1148	RETVAL
1749		1149
1750	int	1150	int
1751	nready()	1151	nready()
1752	PROTOTYPE:	1152	PROTOTYPE:
1753	CODE:	1153	CODE:
1754	RETVAL = get_nready ();	1154	RETVAL = eio_nready ();
1755	OUTPUT:	1155	OUTPUT:
1756	RETVAL	1156	RETVAL
1757		1157
1758	int	1158	int
1759	npending()	1159	npending()
1760	PROTOTYPE:	1160	PROTOTYPE:
1761	CODE:	1161	CODE:
1762	RETVAL = get_npending ();	1162	RETVAL = eio_npending ();
1763	OUTPUT:	1163	OUTPUT:
1764	RETVAL	1164	RETVAL
1765		1165
1766	int	1166	int
1767	nthreads()	1167	nthreads()
1768	PROTOTYPE:	1168	PROTOTYPE:
1769	CODE:	1169	CODE:
1770	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1170	RETVAL = eio_nthreads ();
1771	RETVAL = started;
1772	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1773	OUTPUT:	1171	OUTPUT:
1774	RETVAL	1172	RETVAL
1775		1173
		1174	int
		1175	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1176	PROTOTYPE: $$$$
		1177	CODE:
		1178	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1179	RETVAL = posix_fadvise (fh, offset, length, advice);
		1180	#else
		1181	RETVAL = errno = ENOSYS;
		1182	#endif
		1183	OUTPUT:
		1184	RETVAL
		1185
		1186	ssize_t
		1187	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1188	PROTOTYPE: $$$$
		1189	CODE:
		1190	eio_sendfile_sync (ofh, ifh, offset, count);
		1191
		1192	void _on_next_submit (SV *cb)
		1193	CODE:
		1194	SvREFCNT_dec (on_next_submit);
		1195	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1196
1776	PROTOTYPES: DISABLE	1197	PROTOTYPES: DISABLE
1777		1198
1778	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1199	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1779		1200
1780	void	1201	void
1781	cancel (aio_req_ornot req)	1202	cancel (aio_req_ornot req)
1782	CODE:	1203	CODE:
1783	req_cancel (req);	1204	eio_cancel (req);
1784		1205
1785	void	1206	void
1786	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1207	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1787	CODE:	1208	PPCODE:
		1209	{
		1210	if (GIMME_V != G_VOID)
		1211	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1212
		1213	if (items > 1)
		1214	{
		1215	SV *cb_cv =get_cb (callback);
		1216
1788	SvREFCNT_dec (req->callback);	1217	SvREFCNT_dec (req->callback);
1789	req->callback = newSVsv (callback);	1218	req->callback = SvREFCNT_inc (cb_cv);
		1219	}
		1220	}
1790		1221
1791	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1222	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1792		1223
1793	void	1224	void
1794	add (aio_req grp, ...)	1225	add (aio_req grp, ...)
1795	PPCODE:	1226	PPCODE:
1796	{	1227	{
1797	int i;	1228	int i;
1798	aio_req req;
1799
1800	if (main_sig && !block_sig_level)
1801	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1802		1229
1803	if (grp->int1 == 2)	1230	if (grp->int1 == 2)
1804	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1231	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1805		1232
1806	for (i = 1; i < items; ++i )	1233	for (i = 1; i < items; ++i )
1807	{	1234	{
		1235	aio_req req;
		1236
1808	if (GIMME_V != G_VOID)	1237	if (GIMME_V != G_VOID)
1809	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1238	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1810		1239
1811	req = SvAIO_REQ (ST (i));	1240	req = SvAIO_REQ (ST (i));
1812		1241
1813	if (req)	1242	if (req)
1814	{	1243	eio_grp_add (grp, req);
1815	++grp->size;
1816	req->grp = grp;
1817
1818	req->grp_prev = 0;
1819	req->grp_next = grp->grp_first;
1820
1821	if (grp->grp_first)
1822	grp->grp_first->grp_prev = req;
1823
1824	grp->grp_first = req;
1825	}
1826	}	1244	}
1827	}	1245	}
1828		1246
1829	void	1247	void
1830	cancel_subs (aio_req_ornot req)	1248	cancel_subs (aio_req_ornot req)
…		…
1839	AV *av;	1257	AV *av;
1840		1258
1841	grp->errorno = errno;	1259	grp->errorno = errno;
1842		1260
1843	av = newAV ();	1261	av = newAV ();
		1262	av_extend (av, items - 1);
1844		1263
1845	for (i = 1; i < items; ++i )	1264	for (i = 1; i < items; ++i )
1846	av_push (av, newSVsv (ST (i)));	1265	av_push (av, newSVsv (ST (i)));
1847		1266
1848	SvREFCNT_dec (grp->sv1);	1267	SvREFCNT_dec (grp->sv1);
…		…
1855	grp->errorno = errorno;	1274	grp->errorno = errorno;
1856		1275
1857	void	1276	void
1858	limit (aio_req grp, int limit)	1277	limit (aio_req grp, int limit)
1859	CODE:	1278	CODE:
1860	grp->int2 = limit;	1279	eio_grp_limit (grp, limit);
1861	aio_grp_feed (grp);
1862		1280
1863	void	1281	void
1864	feed (aio_req grp, SV *callback=&PL_sv_undef)	1282	feed (aio_req grp, SV *callback=&PL_sv_undef)
1865	CODE:	1283	CODE:
1866	{	1284	{
1867	SvREFCNT_dec (grp->sv2);	1285	SvREFCNT_dec (grp->sv2);
1868	grp->sv2 = newSVsv (callback);	1286	grp->sv2 = newSVsv (callback);
		1287	grp->feed = aio_grp_feed;
1869		1288
1870	if (grp->int2 <= 0)	1289	if (grp->int2 <= 0)
1871	grp->int2 = 2;	1290	grp->int2 = 2;
1872		1291
1873	aio_grp_feed (grp);	1292	eio_grp_limit (grp, grp->int2);
1874	}	1293	}
1875		1294

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