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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.109 by root, Sat Oct 6 14:05:19 2007 UTC vs.
Revision 1.162 by root, Sun Jan 10 23:05:12 2010 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
		8
		9	#include "schmorp.h"
8		10
9	#include <stddef.h>	11	#include <stddef.h>
10	#include <stdlib.h>	12	#include <stdlib.h>
11	#include <errno.h>	13	#include <errno.h>
12	#include <sys/types.h>	14	#include <sys/types.h>
13	#include <sys/stat.h>	15	#include <sys/stat.h>
		16	#include <sys/statvfs.h>
14	#include <limits.h>	17	#include <limits.h>
15	#include <fcntl.h>	18	#include <fcntl.h>
16	#include <sched.h>	19	#include <sched.h>
17		20
		21	#if _POSIX_MEMLOCK || _POSIX_MAPPED_FILES
		22	# include <sys/mman.h>
		23	#endif
		24
		25	#if !_POSIX_MAPPED_FILES
		26	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		27	# define munmap(addr,length) (errno = ENOSYS, -1)
		28	#endif
		29
		30	/* perl namespace pollution */
		31	#undef VERSION
		32
18	#ifdef _WIN32	33	#ifdef _WIN32
19		34
20	# define SIGIO 0	35	# define EIO_STRUCT_DIRENT Direntry_t
21	typedef Direntry_t X_DIRENT;
22	#undef malloc	36	# undef malloc
23	#undef free	37	# undef free
24		38
25	// perl overrides all those nice win32 functions	39	// perl overrides all those nice win32 functions
26	# undef open	40	# undef open
27	# undef read	41	# undef read
28	# undef write	42	# undef write
…		…
54	# define closedir(fd) (errno = ENOSYS, -1)	68	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)	69	# define mkdir(a,b) mkdir (a)
56		70
57	#else	71	#else
58		72
59	# include "autoconf/config.h"
60	# include <sys/time.h>	73	# include <sys/time.h>
61	# include <sys/select.h>	74	# include <sys/select.h>
62	# include <unistd.h>	75	# include <unistd.h>
63	# include <utime.h>	76	# include <utime.h>
64	# include <signal.h>	77	# include <signal.h>
65	typedef struct dirent X_DIRENT;	78	# define EIO_STRUCT_DIRENT struct dirent
66		79
67	#endif
68
69	#if HAVE_SENDFILE
70	# if __linux
71	# include <sys/sendfile.h>
72	# elif __freebsd
73	# include <sys/socket.h>
74	# include <sys/uio.h>
75	# elif __hpux
76	# include <sys/socket.h>
77	# elif __solaris /* not yet */
78	# include <sys/sendfile.h>
79	# else
80	# error sendfile support requested but not available
81	# endif	80	#endif
82	#endif
83		81
84	/* number of seconds after which idle threads exit */	82	/* perl stupidly overrides readdir and maybe others */
85	#define IDLE_TIMEOUT 10	83	/* with thread-unsafe versions, imagine that :( */
		84	#undef readdir
		85	#undef opendir
		86	#undef closedir
86		87
87	/* used for struct dirent, AIX doesn't provide it */	88	#define EIO_STRUCT_STAT Stat_t
88	#ifndef NAME_MAX
89	# define NAME_MAX 4096
90	#endif
91
92	/* buffer size for various temporary buffers */
93	#define AIO_BUFSIZE 65536
94		89
95	/* use NV for 32 bit perls as it allows larger offsets */	90	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8	91	#if IVSIZE >= 8
		92	# define VAL64 IV
97	# define SvVAL64 SvIV	93	# define SvVAL64 SvIV
		94	# define newSVval64 newSViv
98	#else	95	#else
		96	# define VAL64 NV
99	# define SvVAL64 SvNV	97	# define SvVAL64 SvNV
		98	# define newSVval64 newSVnv
100	#endif	99	#endif
101		100
102	static HV *stash;	101	/*****************************************************************************/
103		102
104	#define dBUF \	103	#if __GNUC__ >= 3
105	char *aio_buf; \	104	# define expect(expr,value) __builtin_expect ((expr),(value))
106	X_LOCK (wrklock); \	105	#else
107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	106	# define expect(expr,value) (expr)
108	X_UNLOCK (wrklock); \	107	#endif
109	if (!aio_buf) \	108
110	return -1;	109	#define expect_false(expr) expect ((expr) != 0, 0)
		110	#define expect_true(expr) expect ((expr) != 0, 1)
		111
		112	/*****************************************************************************/
111		113
112	typedef SV SV8; /* byte-sv, used for argument-checking */	114	typedef SV SV8; /* byte-sv, used for argument-checking */
		115	typedef int aio_rfd; /* read file desriptor */
		116	typedef int aio_wfd; /* write file descriptor */
		117
		118	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		119
		120	#define EIO_REQ_MEMBERS \
		121	SV *callback; \
		122	SV *sv1, *sv2; \
		123	STRLEN stroffset; \
		124	SV *self;
		125
		126	#define EIO_NO_WRAPPERS 1
		127
		128	#include "libeio/eio.h"
		129
		130	#ifndef POSIX_FADV_NORMAL
		131	# define POSIX_FADV_NORMAL 0
		132	# define NO_FADVISE 1
		133	#endif
		134	#ifndef POSIX_FADV_SEQUENTIAL
		135	# define POSIX_FADV_SEQUENTIAL 0
		136	#endif
		137	#ifndef POSIX_FADV_RANDOM
		138	# define POSIX_FADV_RANDOM 0
		139	#endif
		140	#ifndef POSIX_FADV_NOREUSE
		141	# define POSIX_FADV_NOREUSE 0
		142	#endif
		143	#ifndef POSIX_FADV_WILLNEED
		144	# define POSIX_FADV_WILLNEED 0
		145	#endif
		146	#ifndef POSIX_FADV_DONTNEED
		147	# define POSIX_FADV_DONTNEED 0
		148	#endif
		149
		150	#ifndef ST_NODEV
		151	# define ST_NODEV 0
		152	#endif
		153	#ifndef ST_NOEXEC
		154	# define ST_NOEXEC 0
		155	#endif
		156	#ifndef ST_SYNCHRONOUS
		157	# define ST_SYNCHRONOUS 0
		158	#endif
		159	#ifndef ST_MANDLOCK
		160	# define ST_MANDLOCK 0
		161	#endif
		162	#ifndef ST_WRITE
		163	# define ST_WRITE 0
		164	#endif
		165	#ifndef ST_APPEND
		166	# define ST_APPEND 0
		167	#endif
		168	#ifndef ST_IMMUTABLE
		169	# define ST_IMMUTABLE 0
		170	#endif
		171	#ifndef ST_NOATIME
		172	# define ST_NOATIME 0
		173	#endif
		174	#ifndef ST_NODIRATIME
		175	# define ST_NODIRATIME 0
		176	#endif
		177	#ifndef ST_RELATIME
		178	# define ST_RELATIME 0
		179	#endif
		180
		181	#ifndef MCL_CURRENT
		182	# define MCL_CURRENT 0
		183	#endif
		184	#ifndef MCL_FUTURE
		185	# define MCL_FUTURE 0
		186	#endif
		187
		188	#ifndef MAP_ANONYMOUS
		189	# ifdef MAP_ANON
		190	# define MAP_ANONYMOUS MAP_ANON
		191	# else
		192	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
		193	# endif
		194	#endif
		195	#ifndef MAP_HUGETLB
		196	# define MAP_HUGETLB 0
		197	#endif
		198	#ifndef MAP_LOCKED
		199	# define MAP_LOCKED 0
		200	#endif
		201	#ifndef MAP_NORESERVE
		202	# define MAP_NORESERVE 0
		203	#endif
		204	#ifndef MAP_POPULATE
		205	# define MAP_POPULATE 0
		206	#endif
		207	#ifndef MAP_NONBLOCK
		208	# define MAP_NONBLOCK 0
		209	#endif
		210
		211	#ifndef PAGESIZE
		212	# define PAGESIZE sysconf (_SC_PAGESIZE)
		213	#endif
		214
		215	static int req_invoke (eio_req *req);
		216	#define EIO_FINISH(req) req_invoke (req)
		217	static void req_destroy (eio_req *grp);
		218	#define EIO_DESTROY(req) req_destroy (req)
113		219
114	enum {	220	enum {
115	REQ_QUIT,	221	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116	REQ_OPEN, REQ_CLOSE,
117	REQ_READ, REQ_WRITE,
118	REQ_READAHEAD, REQ_SENDFILE,
119	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
120	REQ_TRUNCATE, REQ_FTRUNCATE,
121	REQ_UTIME, REQ_FUTIME,
122	REQ_CHMOD, REQ_FCHMOD,
123	REQ_CHOWN, REQ_FCHOWN,
124	REQ_FSYNC, REQ_FDATASYNC,
125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
126	REQ_MKNOD, REQ_READDIR,
127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
128	REQ_GROUP, REQ_NOP,
129	REQ_BUSY,
130	};	222	};
131		223
132	#define AIO_REQ_KLASS "IO::AIO::REQ"	224	#include "libeio/eio.c"
133	#define AIO_GRP_KLASS "IO::AIO::GRP"
134		225
135	typedef struct aio_cb
136	{
137	struct aio_cb *volatile next;
138
139	SV *callback;
140	SV *sv1, *sv2;
141	void *ptr1, *ptr2;
142	off_t offs;
143	size_t size;
144	ssize_t result;
145	double nv1, nv2;
146
147	STRLEN stroffset;
148	int type;
149	int int1, int2, int3;
150	int errorno;
151	mode_t mode; /* open */
152
153	unsigned char flags;
154	unsigned char pri;
155
156	SV *self; /* the perl counterpart of this request, if any */
157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
158	} aio_cb;
159
160	enum {
161	FLAG_CANCELLED = 0x01, /* request was cancelled */
162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
164	};
165
166	typedef aio_cb *aio_req;	226	typedef eio_req *aio_req;
167	typedef aio_cb *aio_req_ornot;	227	typedef eio_req *aio_req_ornot;
168		228
169	enum {	229	static SV *on_next_submit;
170	PRI_MIN = -4,	230	static int next_pri = EIO_PRI_DEFAULT;
171	PRI_MAX = 4,	231	static int max_outstanding;
172		232
173	DEFAULT_PRI = 0,	233	static s_epipe respipe;
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177		234
178	#define AIO_TICKS ((1000000 + 1023) >> 10)
179
180	static unsigned int max_poll_time = 0;
181	static unsigned int max_poll_reqs = 0;
182
183	/* calculcate time difference in ~1/AIO_TICKS of a second */
184	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
185	{
186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
188	}
189
190	static thread_t main_tid;
191	static int main_sig;
192	static int block_sig_level;
193
194	void block_sig ()
195	{
196	sigset_t ss;
197
198	if (block_sig_level++)
199	return;
200
201	if (!main_sig)
202	return;
203
204	sigemptyset (&ss);
205	sigaddset (&ss, main_sig);
206	pthread_sigmask (SIG_BLOCK, &ss, 0);
207	}
208
209	void unblock_sig ()
210	{
211	sigset_t ss;
212
213	if (--block_sig_level)
214	return;
215
216	if (!main_sig)
217	return;
218
219	sigemptyset (&ss);
220	sigaddset (&ss, main_sig);
221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
222	}
223
224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
225
226	static unsigned int started, idle, wanted;
227
228	/* worker threads management */
229	static mutex_t wrklock = X_MUTEX_INIT;
230
231	typedef struct worker {
232	/* locked by wrklock */
233	struct worker *prev, *next;
234
235	thread_t tid;
236
237	/* locked by reslock, reqlock or wrklock */
238	aio_req req; /* currently processed request */
239	void *dbuf;
240	DIR *dirp;
241	} worker;
242
243	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
244
245	static void worker_clear (worker *wrk)
246	{
247	if (wrk->dirp)
248	{
249	closedir (wrk->dirp);
250	wrk->dirp = 0;
251	}
252
253	if (wrk->dbuf)
254	{
255	free (wrk->dbuf);
256	wrk->dbuf = 0;
257	}
258	}
259
260	static void worker_free (worker *wrk)
261	{
262	wrk->next->prev = wrk->prev;
263	wrk->prev->next = wrk->next;
264
265	free (wrk);
266	}
267
268	static volatile unsigned int nreqs, nready, npending;
269	static volatile unsigned int max_idle = 4;
270	static volatile unsigned int max_outstanding = 0xffffffff;
271	static int respipe_osf [2], respipe [2] = { -1, -1 };
272
273	static mutex_t reslock = X_MUTEX_INIT;
274	static mutex_t reqlock = X_MUTEX_INIT;
275	static cond_t reqwait = X_COND_INIT;
276
277	#if WORDACCESS_UNSAFE
278
279	static unsigned int get_nready ()
280	{
281	unsigned int retval;
282
283	X_LOCK (reqlock);
284	retval = nready;
285	X_UNLOCK (reqlock);
286
287	return retval;
288	}
289
290	static unsigned int get_npending ()
291	{
292	unsigned int retval;
293
294	X_LOCK (reslock);
295	retval = npending;
296	X_UNLOCK (reslock);
297
298	return retval;
299	}
300
301	static unsigned int get_nthreads ()
302	{
303	unsigned int retval;
304
305	X_LOCK (wrklock);
306	retval = started;
307	X_UNLOCK (wrklock);
308
309	return retval;
310	}
311
312	#else
313
314	# define get_nready() nready
315	# define get_npending() npending
316	# define get_nthreads() started
317
318	#endif
319
320	/*
321	* a somewhat faster data structure might be nice, but
322	* with 8 priorities this actually needs <20 insns
323	* per shift, the most expensive operation.
324	*/
325	typedef struct {
326	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
327	int size;
328	} reqq;
329
330	static reqq req_queue;
331	static reqq res_queue;
332
333	int reqq_push (reqq *q, aio_req req)
334	{
335	int pri = req->pri;
336	req->next = 0;
337
338	if (q->qe[pri])
339	{
340	q->qe[pri]->next = req;
341	q->qe[pri] = req;
342	}
343	else
344	q->qe[pri] = q->qs[pri] = req;
345
346	return q->size++;
347	}
348
349	aio_req reqq_shift (reqq *q)
350	{
351	int pri;
352
353	if (!q->size)
354	return 0;
355
356	--q->size;
357
358	for (pri = NUM_PRI; pri--; )
359	{
360	aio_req req = q->qs[pri];
361
362	if (req)
363	{
364	if (!(q->qs[pri] = req->next))
365	q->qe[pri] = 0;
366
367	return req;
368	}
369	}
370
371	abort ();
372	}
373
374	static int poll_cb ();
375	static int req_invoke (aio_req req);
376	static void req_destroy (aio_req req);	235	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	236	static void req_cancel (aio_req req);
378		237
		238	static void want_poll (void)
		239	{
		240	/* write a dummy byte to the pipe so fh becomes ready */
		241	s_epipe_signal (&respipe);
		242	}
		243
		244	static void done_poll (void)
		245	{
		246	/* read any signals sent by the worker threads */
		247	s_epipe_drain (&respipe);
		248	}
		249
379	/* must be called at most once */	250	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	251	static SV *req_sv (aio_req req, HV *stash)
381	{	252	{
382	if (!req->self)	253	if (!req->self)
383	{	254	{
384	req->self = (SV *)newHV ();	255	req->self = (SV *)newHV ();
385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	256	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386	}	257	}
387		258
388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	259	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389	}	260	}
390		261
391	static aio_req SvAIO_REQ (SV *sv)	262	static aio_req SvAIO_REQ (SV *sv)
392	{	263	{
393	MAGIC *mg;	264	MAGIC *mg;
394		265
395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	266	if (!SvROK (sv)
		267	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		268	&& SvSTASH (SvRV (sv)) != aio_req_stash
		269	&& !sv_derived_from (sv, "IO::AIO::REQ")))
396	croak ("object of class " AIO_REQ_KLASS " expected");	270	croak ("object of class IO::AIO::REQ expected");
397		271
398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	272	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399		273
400	return mg ? (aio_req)mg->mg_ptr : 0;	274	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	275	}
402		276
403	static void aio_grp_feed (aio_req grp)	277	static void aio_grp_feed (aio_req grp)
404	{	278	{
405	block_sig ();	279	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	280	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	281	dSP;
414		282
415	ENTER;	283	ENTER;
416	SAVETMPS;	284	SAVETMPS;
417	PUSHMARK (SP);	285	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	286	XPUSHs (req_sv (grp, aio_grp_stash));
419	PUTBACK;	287	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	288	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	289	SPAGAIN;
422	FREETMPS;	290	FREETMPS;
423	LEAVE;	291	LEAVE;
424	}
425
426	/* stop if no progress has been made */
427	if (old_len == grp->size)
428	{
429	SvREFCNT_dec (grp->sv2);
430	grp->sv2 = 0;
431	break;
432	}
433	}	292	}
434
435	unblock_sig ();
436	}	293	}
437		294
438	static void aio_grp_dec (aio_req grp)	295	static void req_submit (eio_req *req)
439	{	296	{
440	--grp->size;	297	eio_submit (req);
441		298
442	/* call feeder, if applicable */	299	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	300	{
448	block_sig ();	301	dSP;
		302	SV *cb = sv_2mortal (on_next_submit);
449		303
450	if (!req_invoke (grp))	304	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		305
457	req_destroy (grp);	306	PUSHMARK (SP);
458	unblock_sig ();	307	PUTBACK;
		308	call_sv (cb, G_DISCARD | G_EVAL);
459	}	309	}
460	}	310	}
461		311
462	static int req_invoke (aio_req req)	312	static int req_invoke (eio_req *req)
463	{	313	{
464	dSP;	314	dSP;
465		315
466	if (req->flags & FLAG_SV2_RO_OFF)	316	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	317	SvREADONLY_off (req->sv2);
468		318
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	319	if (!EIO_CANCELLED (req) && req->callback)
470	{	320	{
471	ENTER;	321	ENTER;
472	SAVETMPS;	322	SAVETMPS;
473	PUSHMARK (SP);	323	PUSHMARK (SP);
474	EXTEND (SP, 1);	324	EXTEND (SP, 1);
475		325
476	switch (req->type)	326	switch (req->type)
477	{	327	{
478	case REQ_READDIR:	328	case EIO_READDIR:
479	{	329	{
480	SV *rv = &PL_sv_undef;	330	SV *rv = &PL_sv_undef;
481		331
482	if (req->result >= 0)	332	if (req->result >= 0)
483	{	333	{
484	int i;	334	int i;
485	char *buf = req->ptr2;	335	char *names = (char *)req->ptr2;
		336	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486	AV *av = newAV ();	337	AV *av = newAV ();
487		338
488	av_extend (av, req->result - 1);	339	av_extend (av, req->result - 1);
489		340
490	for (i = 0; i < req->result; ++i)	341	for (i = 0; i < req->result; ++i)
491	{	342	{
492	SV *sv = newSVpv (buf, 0);	343	if (req->int1 & EIO_READDIR_DENTS)
		344	{
		345	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493		346
		347	if (req->int1 & EIO_READDIR_CUSTOM2)
		348	{
		349	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		350	AV *avent = newAV ();
		351
		352	av_extend (avent, 2);
		353
		354	if (!sv_type [ent->type])
		355	{
		356	sv_type [ent->type] = newSViv (ent->type);
		357	SvREADONLY_on (sv_type [ent->type]);
		358	}
		359
		360	av_store (avent, 0, namesv);
		361	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		362	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		363
		364	av_store (av, i, newRV_noinc ((SV *)avent));
		365	}
		366	else
494	av_store (av, i, sv);	367	av_store (av, i, namesv);
		368
		369	++ent;
		370	}
		371	else
		372	{
		373	SV *name = newSVpv (names, 0);
		374	av_store (av, i, name);
495	buf += SvCUR (sv) + 1;	375	names += SvCUR (name) + 1;
		376	}
496	}	377	}
497		378
498	rv = sv_2mortal (newRV_noinc ((SV *)av));	379	rv = sv_2mortal (newRV_noinc ((SV *)av));
499	}	380	}
500		381
501	PUSHs (rv);	382	PUSHs (rv);
		383
		384	if (req->int1 & EIO_READDIR_CUSTOM1)
		385	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502	}	386	}
503	break;	387	break;
504		388
505	case REQ_OPEN:	389	case EIO_OPEN:
506	{	390	{
507	/* convert fd to fh */	391	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	392	SV *fh = &PL_sv_undef;
509		393
510	if (req->result >= 0)	394	if (req->result >= 0)
…		…
512	GV *gv = (GV *)sv_newmortal ();	396	GV *gv = (GV *)sv_newmortal ();
513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	397	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
514	char sym [64];	398	char sym [64];
515	int symlen;	399	int symlen;
516		400
517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	401	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
518	gv_init (gv, stash, sym, symlen, 0);	402	gv_init (gv, aio_stash, sym, symlen, 0);
519		403
520	symlen = snprintf (	404	symlen = snprintf (
521	sym,	405	sym,
522	sizeof (sym),	406	sizeof (sym),
523	"%s&=%d",	407	"%s&=%d",
524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",	408	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525	req->result	409	(int)req->result
526	);	410	);
527		411
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	412	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
529	fh = (SV *)gv;	413	fh = (SV *)gv;
530	}	414	}
531		415
532	PUSHs (fh);	416	PUSHs (fh);
533	}	417	}
534	break;	418	break;
535		419
		420	case EIO_STATVFS:
		421	case EIO_FSTATVFS:
		422	{
		423	SV *rv = &PL_sv_undef;
		424
		425	if (req->result >= 0)
		426	{
		427	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		428	HV *hv = newHV ();
		429
		430	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		431
		432	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		433	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		434	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		435	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		436	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		437	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		438	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		439	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		440	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		441	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		442	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		443	}
		444
		445	PUSHs (rv);
		446	}
		447
		448	break;
		449
536	case REQ_GROUP:	450	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	451	req->int1 = 2; /* mark group as finished */
538		452
539	if (req->sv1)	453	if (req->sv1)
540	{	454	{
541	int i;	455	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	459	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	460	PUSHs (*av_fetch (av, i, 0));
547	}	461	}
548	break;	462	break;
549		463
550	case REQ_NOP:	464	case EIO_NOP:
551	case REQ_BUSY:	465	case EIO_BUSY:
552	break;	466	break;
553		467
554	case REQ_READLINK:	468	case EIO_READLINK:
555	if (req->result > 0)	469	if (req->result > 0)
556	{	470	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
557	SvCUR_set (req->sv2, req->result);
558	*SvEND (req->sv2) = 0;
559	PUSHs (req->sv2);
560	}
561	break;	471	break;
562		472
563	case REQ_STAT:	473	case EIO_STAT:
564	case REQ_LSTAT:	474	case EIO_LSTAT:
565	case REQ_FSTAT:	475	case EIO_FSTAT:
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	476	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
567	PL_laststatval = req->result;	477	PL_laststatval = req->result;
568	PL_statcache = *(Stat_t *)(req->ptr2);	478	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));	479	PUSHs (sv_2mortal (newSViv (req->result)));
570	break;	480	break;
571		481
572	case REQ_READ:	482	case EIO_READ:
		483	{
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	484	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;	485	*SvEND (req->sv2) = 0;
		486	SvPOK_only (req->sv2);
		487	SvSETMAGIC (req->sv2);
575	PUSHs (sv_2mortal (newSViv (req->result)));	488	PUSHs (sv_2mortal (newSViv (req->result)));
		489	}
576	break;	490	break;
		491
		492	case EIO_DUP2:
		493	if (req->result > 0)
		494	req->result = 0;
		495	/* FALLTHROUGH */
577		496
578	default:	497	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	498	PUSHs (sv_2mortal (newSViv (req->result)));
580	break;	499	break;
581	}	500	}
…		…
590	LEAVE;	509	LEAVE;
591		510
592	PUTBACK;	511	PUTBACK;
593	}	512	}
594		513
595	if (req->grp)
596	{
597	aio_req grp = req->grp;
598
599	/* unlink request */
600	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
601	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
602
603	if (grp->grp_first == req)
604	grp->grp_first = req->grp_next;
605
606	aio_grp_dec (grp);
607	}
608
609	return !SvTRUE (ERRSV);	514	return !!SvTRUE (ERRSV);
610	}	515	}
611		516
612	static void req_destroy (aio_req req)	517	static void req_destroy (aio_req req)
613	{	518	{
614	if (req->self)	519	if (req->self)
…		…
619		524
620	SvREFCNT_dec (req->sv1);	525	SvREFCNT_dec (req->sv1);
621	SvREFCNT_dec (req->sv2);	526	SvREFCNT_dec (req->sv2);
622	SvREFCNT_dec (req->callback);	527	SvREFCNT_dec (req->callback);
623		528
624	if (req->flags & FLAG_PTR2_FREE)
625	free (req->ptr2);
626
627	Safefree (req);	529	Safefree (req);
628	}	530	}
629		531
630	static void req_cancel_subs (aio_req grp)	532	static void req_cancel_subs (aio_req grp)
631	{	533	{
632	aio_req sub;	534	aio_req sub;
633		535
634	if (grp->type != REQ_GROUP)	536	if (grp->type != EIO_GROUP)
635	return;	537	return;
636		538
637	SvREFCNT_dec (grp->sv2);	539	SvREFCNT_dec (grp->sv2);
638	grp->sv2 = 0;	540	grp->sv2 = 0;
639		541
640	for (sub = grp->grp_first; sub; sub = sub->grp_next)	542	eio_grp_cancel (grp);
641	req_cancel (sub);
642	}	543	}
643
644	static void req_cancel (aio_req req)
645	{
646	req->flags |= FLAG_CANCELLED;
647
648	req_cancel_subs (req);
649	}
650
651	#ifdef USE_SOCKETS_AS_HANDLES
652	# define TO_SOCKET(x) (win32_get_osfhandle (x))
653	#else
654	# define TO_SOCKET(x) (x)
655	#endif
656		544
657	static void	545	static void
658	create_respipe ()	546	create_respipe (void)
659	{	547	{
660	int old_readfd = respipe [0];
661
662	if (respipe [1] >= 0)
663	respipe_close (TO_SOCKET (respipe [1]));
664
665	#ifdef _WIN32
666	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
667	#else
668	if (pipe (respipe))	548	if (s_epipe_renew (&respipe))
669	#endif
670	croak ("unable to initialize result pipe");	549	croak ("IO::AIO: unable to initialize result pipe");
671
672	if (old_readfd >= 0)
673	{
674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
675	croak ("unable to initialize result pipe(2)");
676
677	respipe_close (respipe [0]);
678	respipe [0] = old_readfd;
679	}
680
681	#ifdef _WIN32
682	int arg = 1;
683	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
684	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
685	#else
686	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
687	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
688	#endif
689	croak ("unable to initialize result pipe(3)");
690
691	respipe_osf [0] = TO_SOCKET (respipe [0]);
692	respipe_osf [1] = TO_SOCKET (respipe [1]);
693	}	550	}
694		551
695	X_THREAD_PROC (aio_proc);
696
697	static void start_thread (void)
698	{
699	worker *wrk = calloc (1, sizeof (worker));
700
701	if (!wrk)
702	croak ("unable to allocate worker thread data");
703
704	X_LOCK (wrklock);
705
706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
707	{
708	wrk->prev = &wrk_first;
709	wrk->next = wrk_first.next;
710	wrk_first.next->prev = wrk;
711	wrk_first.next = wrk;
712	++started;
713	}
714	else
715	free (wrk);
716
717	X_UNLOCK (wrklock);
718	}
719
720	static void maybe_start_thread ()
721	{
722	if (get_nthreads () >= wanted)
723	return;
724
725	/* todo: maybe use idle here, but might be less exact */
726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
727	return;
728
729	start_thread ();
730	}
731
732	static void req_send (aio_req req)
733	{
734	block_sig ();
735
736	++nreqs;
737
738	X_LOCK (reqlock);
739	++nready;
740	reqq_push (&req_queue, req);
741	X_COND_SIGNAL (reqwait);
742	X_UNLOCK (reqlock);
743
744	unblock_sig ();
745
746	maybe_start_thread ();
747	}
748
749	static void end_thread (void)
750	{
751	aio_req req;
752
753	Newz (0, req, 1, aio_cb);
754
755	req->type = REQ_QUIT;
756	req->pri = PRI_MAX + PRI_BIAS;
757
758	X_LOCK (reqlock);
759	reqq_push (&req_queue, req);
760	X_COND_SIGNAL (reqwait);
761	X_UNLOCK (reqlock);
762
763	X_LOCK (wrklock);
764	--started;
765	X_UNLOCK (wrklock);
766	}
767
768	static void set_max_idle (int nthreads)
769	{
770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
771	max_idle = nthreads <= 0 ? 1 : nthreads;
772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
773	}
774
775	static void min_parallel (int nthreads)
776	{
777	if (wanted < nthreads)
778	wanted = nthreads;
779	}
780
781	static void max_parallel (int nthreads)
782	{
783	if (wanted > nthreads)
784	wanted = nthreads;
785
786	while (started > wanted)
787	end_thread ();
788	}
789
790	static void poll_wait ()	552	static void poll_wait (void)
791	{	553	{
792	fd_set rfd;
793
794	while (nreqs)	554	while (eio_nreqs ())
795	{	555	{
796	int size;	556	int size;
797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	557
		558	X_LOCK (reslock);
798	size = res_queue.size;	559	size = res_queue.size;
799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	560	X_UNLOCK (reslock);
800		561
801	if (size)	562	if (size)
802	return;	563	return;
803		564
804	maybe_start_thread ();	565	etp_maybe_start_thread ();
805		566
806	FD_ZERO (&rfd);	567	s_epipe_wait (&respipe);
807	FD_SET (respipe [0], &rfd);
808
809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
810	}	568	}
811	}	569	}
812		570
813	static int poll_cb ()	571	static int poll_cb (void)
814	{	572	{
815	dSP;
816	int count = 0;
817	int maxreqs = max_poll_reqs;
818	int do_croak = 0;
819	struct timeval tv_start, tv_now;
820	aio_req req;
821
822	if (max_poll_time)
823	gettimeofday (&tv_start, 0);
824
825	block_sig ();
826
827	for (;;)	573	for (;;)
828	{	574	{
829	for (;;)	575	int res = eio_poll ();
830	{
831	maybe_start_thread ();
832		576
833	X_LOCK (reslock);	577	if (res > 0)
834	req = reqq_shift (&res_queue);
835
836	if (req)
837	{
838	--npending;
839
840	if (!res_queue.size)
841	{
842	/* read any signals sent by the worker threads */
843	char buf [4];
844	while (respipe_read (respipe [0], buf, 4) == 4)
845	;
846	}
847	}
848
849	X_UNLOCK (reslock);
850
851	if (!req)
852	break;
853
854	--nreqs;
855
856	if (req->type == REQ_GROUP && req->size)
857	{
858	req->int1 = 1; /* mark request as delayed */
859	continue;
860	}
861	else
862	{
863	if (!req_invoke (req))
864	{
865	req_destroy (req);
866	unblock_sig ();
867	croak (0);	578	croak (0);
868	}
869		579
870	count++;	580	if (!max_outstanding || max_outstanding > eio_nreqs ())
871	}	581	return res;
872
873	req_destroy (req);
874
875	if (maxreqs && !--maxreqs)
876	break;
877
878	if (max_poll_time)
879	{
880	gettimeofday (&tv_now, 0);
881
882	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
883	break;
884	}
885	}
886
887	if (nreqs <= max_outstanding)
888	break;
889		582
890	poll_wait ();	583	poll_wait ();
891
892	++maxreqs;
893	}	584	}
		585	}
894		586
895	unblock_sig ();	587	static void atfork_child (void)
896	return count;	588	{
		589	create_respipe ();
897	}	590	}
898		591
899	/*****************************************************************************/	592	/*****************************************************************************/
900	/* work around various missing functions */
901		593
902	#if !HAVE_PREADWRITE	594	#define MMAP_MAGIC PERL_MAGIC_ext
903	# define pread aio_pread
904	# define pwrite aio_pwrite
905		595
906	/*	596	static int
907	* make our pread/pwrite safe against themselves, but not against	597	mmap_free (pTHX_ SV *sv, MAGIC *mg)
908	* normal read/write by using a mutex. slows down execution a lot,
909	* but that's your problem, not mine.
910	*/
911	static mutex_t preadwritelock = X_MUTEX_INIT;
912
913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
914	{	598	{
915	ssize_t res;	599	int old_errno = errno;
916	off_t ooffset;	600	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
917
918	X_LOCK (preadwritelock);
919	ooffset = lseek (fd, 0, SEEK_CUR);
920	lseek (fd, offset, SEEK_SET);
921	res = read (fd, buf, count);
922	lseek (fd, ooffset, SEEK_SET);
923	X_UNLOCK (preadwritelock);
924
925	return res;
926	}
927
928	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
929	{
930	ssize_t res;
931	off_t ooffset;
932
933	X_LOCK (preadwritelock);
934	ooffset = lseek (fd, 0, SEEK_CUR);
935	lseek (fd, offset, SEEK_SET);
936	res = write (fd, buf, count);
937	lseek (fd, offset, SEEK_SET);
938	X_UNLOCK (preadwritelock);
939
940	return res;
941	}
942	#endif
943
944	#ifndef HAVE_FUTIMES
945
946	# define utimes(path,times) aio_utimes (path, times)
947	# define futimes(fd,times) aio_futimes (fd, times)
948
949	int aio_utimes (const char *filename, const struct timeval times[2])
950	{
951	if (times)
952	{
953	struct utimbuf buf;
954
955	buf.actime = times[0].tv_sec;
956	buf.modtime = times[1].tv_sec;
957
958	return utime (filename, &buf);
959	}
960	else
961	return utime (filename, 0);
962	}
963
964	int aio_futimes (int fd, const struct timeval tv[2])
965	{
966	errno = ENOSYS;
967	return -1;
968	}
969
970	#endif
971
972	#if !HAVE_FDATASYNC
973	# define fdatasync fsync
974	#endif
975
976	#if !HAVE_READAHEAD
977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
978
979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
980	{
981	size_t todo = count;
982	dBUF;
983
984	while (todo > 0)
985	{
986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
987
988	pread (fd, aio_buf, len, offset);
989	offset += len;
990	todo -= len;
991	}
992
993	errno = 0;
994	return count;
995	}
996
997	#endif
998
999	#if !HAVE_READDIR_R
1000	# define readdir_r aio_readdir_r
1001
1002	static mutex_t readdirlock = X_MUTEX_INIT;
1003
1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1005	{
1006	X_DIRENT *e;
1007	int errorno;
1008
1009	X_LOCK (readdirlock);
1010
1011	e = readdir (dirp);
1012	errorno = errno;	601	errno = old_errno;
1013		602
1014	if (e)	603	mg->mg_obj = 0; /* just in case */
1015	{
1016	*res = ent;
1017	strcpy (ent->d_name, e->d_name);
1018	}
1019	else
1020	*res = 0;
1021		604
1022	X_UNLOCK (readdirlock);	605	SvREADONLY_off (sv);
		606	SvCUR_set (sv, 0);
		607	SvLEN_set (sv, 0);
		608	SvPVX (sv) = 0;
		609	SvOK_off (sv);
1023		610
1024	errno = errorno;
1025	return e ? 0 : -1;
1026	}
1027	#endif
1028
1029	/* sendfile always needs emulation */
1030	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1031	{
1032	ssize_t res;
1033
1034	if (!count)
1035	return 0;	611	return 0;
1036
1037	#if HAVE_SENDFILE
1038	# if __linux
1039	res = sendfile (ofd, ifd, &offset, count);
1040
1041	# elif __freebsd
1042	/*
1043	* Of course, the freebsd sendfile is a dire hack with no thoughts
1044	* wasted on making it similar to other I/O functions.
1045	*/
1046	{
1047	off_t sbytes;
1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1049
1050	if (res < 0 && sbytes)
1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1052	res = sbytes;
1053	}
1054
1055	# elif __hpux
1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
1057
1058	# elif __solaris
1059	{
1060	struct sendfilevec vec;
1061	size_t sbytes;
1062
1063	vec.sfv_fd = ifd;
1064	vec.sfv_flag = 0;
1065	vec.sfv_off = offset;
1066	vec.sfv_len = count;
1067
1068	res = sendfilev (ofd, &vec, 1, &sbytes);
1069
1070	if (res < 0 && sbytes)
1071	res = sbytes;
1072	}
1073
1074	# endif
1075	#else
1076	res = -1;
1077	errno = ENOSYS;
1078	#endif
1079
1080	if (res < 0
1081	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1082	#if __solaris
1083	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1084	#endif
1085	)
1086	)
1087	{
1088	/* emulate sendfile. this is a major pain in the ass */
1089	dBUF;
1090
1091	res = 0;
1092
1093	while (count)
1094	{
1095	ssize_t cnt;
1096
1097	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1098
1099	if (cnt <= 0)
1100	{
1101	if (cnt && !res) res = -1;
1102	break;
1103	}
1104
1105	cnt = write (ofd, aio_buf, cnt);
1106
1107	if (cnt <= 0)
1108	{
1109	if (cnt && !res) res = -1;
1110	break;
1111	}
1112
1113	offset += cnt;
1114	res += cnt;
1115	count -= cnt;
1116	}
1117	}
1118
1119	return res;
1120	}	612	}
1121		613
1122	/* read a full directory */	614	static MGVTBL mmap_vtbl = {
1123	static void scandir_ (aio_req req, worker *self)	615	0, 0, 0, 0, mmap_free
1124	{	616	};
1125	DIR *dirp;
1126	union
1127	{
1128	X_DIRENT d;
1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1130	} *u;
1131	X_DIRENT *entp;
1132	char *name, *names;
1133	int memlen = 4096;
1134	int memofs = 0;
1135	int res = 0;
1136
1137	X_LOCK (wrklock);
1138	self->dirp = dirp = opendir (req->ptr1);
1139	self->dbuf = u = malloc (sizeof (*u));
1140	req->flags |= FLAG_PTR2_FREE;
1141	req->ptr2 = names = malloc (memlen);
1142	X_UNLOCK (wrklock);
1143
1144	if (dirp && u && names)
1145	for (;;)
1146	{
1147	errno = 0;
1148	readdir_r (dirp, &u->d, &entp);
1149
1150	if (!entp)
1151	break;
1152
1153	name = entp->d_name;
1154
1155	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1156	{
1157	int len = strlen (name) + 1;
1158
1159	res++;
1160
1161	while (memofs + len > memlen)
1162	{
1163	memlen *= 2;
1164	X_LOCK (wrklock);
1165	req->ptr2 = names = realloc (names, memlen);
1166	X_UNLOCK (wrklock);
1167
1168	if (!names)
1169	break;
1170	}
1171
1172	memcpy (names + memofs, name, len);
1173	memofs += len;
1174	}
1175	}
1176
1177	if (errno)
1178	res = -1;
1179
1180	req->result = res;
1181	}
1182		617
1183	/*****************************************************************************/	618	/*****************************************************************************/
1184		619
1185	X_THREAD_PROC (aio_proc)	620	static SV *
		621	get_cb (SV *cb_sv)
1186	{	622	{
1187	{//D	623	SvGETMAGIC (cb_sv);
1188	aio_req req;	624	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1189	struct timespec ts;
1190	worker *self = (worker *)thr_arg;
1191
1192	/* try to distribute timeouts somewhat randomly */
1193	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1194
1195	for (;;)
1196	{
1197	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1198
1199	X_LOCK (reqlock);
1200
1201	for (;;)
1202	{
1203	self->req = req = reqq_shift (&req_queue);
1204
1205	if (req)
1206	break;
1207
1208	++idle;
1209
1210	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1211	== ETIMEDOUT)
1212	{
1213	if (idle > max_idle)
1214	{
1215	--idle;
1216	X_UNLOCK (reqlock);
1217	X_LOCK (wrklock);
1218	--started;
1219	X_UNLOCK (wrklock);
1220	goto quit;
1221	}
1222
1223	/* we are allowed to idle, so do so without any timeout */
1224	X_COND_WAIT (reqwait, reqlock);
1225	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1226	}
1227
1228	--idle;
1229	}
1230
1231	--nready;
1232
1233	X_UNLOCK (reqlock);
1234
1235	errno = 0; /* strictly unnecessary */
1236
1237	if (!(req->flags & FLAG_CANCELLED))
1238	switch (req->type)
1239	{
1240	case REQ_READ: req->result = req->offs >= 0
1241	? pread (req->int1, req->ptr1, req->size, req->offs)
1242	: read (req->int1, req->ptr1, req->size); break;
1243	case REQ_WRITE: req->result = req->offs >= 0
1244	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1245	: write (req->int1, req->ptr1, req->size); break;
1246
1247	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1248	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1249
1250	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1251	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1252	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1253
1254	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1255	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1256	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1257	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1258	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1259	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1260
1261	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1262	case REQ_CLOSE: req->result = close (req->int1); break;
1263	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1264	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1265	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1266	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1267	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1268	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1269	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1270	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1271
1272	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1273	case REQ_FSYNC: req->result = fsync (req->int1); break;
1274	case REQ_READDIR: scandir_ (req, self); break;
1275
1276	case REQ_BUSY:
1277	#ifdef _WIN32
1278	Sleep (req->nv1 * 1000.);
1279	#else
1280	{
1281	struct timeval tv;
1282
1283	tv.tv_sec = req->nv1;
1284	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1285
1286	req->result = select (0, 0, 0, 0, &tv);
1287	}
1288	#endif
1289	break;
1290
1291	case REQ_UTIME:
1292	case REQ_FUTIME:
1293	{
1294	struct timeval tv[2];
1295	struct timeval *times;
1296
1297	if (req->nv1 != -1. || req->nv2 != -1.)
1298	{
1299	tv[0].tv_sec = req->nv1;
1300	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1301	tv[1].tv_sec = req->nv2;
1302	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1303
1304	times = tv;
1305	}
1306	else
1307	times = 0;
1308
1309
1310	req->result = req->type == REQ_FUTIME
1311	? futimes (req->int1, times)
1312	: utimes (req->ptr1, times);
1313	}
1314
1315	case REQ_GROUP:
1316	case REQ_NOP:
1317	break;
1318
1319	case REQ_QUIT:
1320	goto quit;
1321
1322	default:
1323	req->result = -1;
1324	break;
1325	}
1326
1327	req->errorno = errno;
1328
1329	X_LOCK (reslock);
1330
1331	++npending;
1332
1333	if (!reqq_push (&res_queue, req))
1334	{
1335	/* write a dummy byte to the pipe so fh becomes ready */
1336	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1337
1338	/* optionally signal the main thread asynchronously */
1339	if (main_sig)
1340	pthread_kill (main_tid, main_sig);
1341	}
1342
1343	self->req = 0;
1344	worker_clear (self);
1345
1346	X_UNLOCK (reslock);
1347	}
1348
1349	quit:
1350	X_LOCK (wrklock);
1351	worker_free (self);
1352	X_UNLOCK (wrklock);
1353
1354	return 0;
1355	}//D
1356	}
1357
1358	/*****************************************************************************/
1359
1360	static void atfork_prepare (void)
1361	{
1362	X_LOCK (wrklock);
1363	X_LOCK (reqlock);
1364	X_LOCK (reslock);
1365	#if !HAVE_PREADWRITE
1366	X_LOCK (preadwritelock);
1367	#endif
1368	#if !HAVE_READDIR_R
1369	X_LOCK (readdirlock);
1370	#endif
1371	}
1372
1373	static void atfork_parent (void)
1374	{
1375	#if !HAVE_READDIR_R
1376	X_UNLOCK (readdirlock);
1377	#endif
1378	#if !HAVE_PREADWRITE
1379	X_UNLOCK (preadwritelock);
1380	#endif
1381	X_UNLOCK (reslock);
1382	X_UNLOCK (reqlock);
1383	X_UNLOCK (wrklock);
1384	}
1385
1386	static void atfork_child (void)
1387	{
1388	aio_req prv;
1389
1390	while (prv = reqq_shift (&req_queue))
1391	req_destroy (prv);
1392
1393	while (prv = reqq_shift (&res_queue))
1394	req_destroy (prv);
1395
1396	while (wrk_first.next != &wrk_first)
1397	{
1398	worker *wrk = wrk_first.next;
1399
1400	if (wrk->req)
1401	req_destroy (wrk->req);
1402
1403	worker_clear (wrk);
1404	worker_free (wrk);
1405	}
1406
1407	started = 0;
1408	idle = 0;
1409	nreqs = 0;
1410	nready = 0;
1411	npending = 0;
1412
1413	create_respipe ();
1414
1415	atfork_parent ();
1416	}	625	}
1417		626
1418	#define dREQ \	627	#define dREQ \
		628	SV *cb_cv; \
1419	aio_req req; \	629	aio_req req; \
1420	int req_pri = next_pri; \	630	int req_pri = next_pri; \
1421	next_pri = DEFAULT_PRI + PRI_BIAS; \	631	next_pri = EIO_PRI_DEFAULT; \
1422	\	632	\
1423	if (SvOK (callback) && !SvROK (callback)) \	633	cb_cv = get_cb (callback); \
1424	croak ("callback must be undef or of reference type"); \
1425	\	634	\
1426	Newz (0, req, 1, aio_cb); \	635	Newz (0, req, 1, eio_req); \
1427	if (!req) \	636	if (!req) \
1428	croak ("out of memory during aio_req allocation"); \	637	croak ("out of memory during eio_req allocation"); \
1429	\	638	\
1430	req->callback = newSVsv (callback); \	639	req->callback = SvREFCNT_inc (cb_cv); \
1431	req->pri = req_pri	640	req->pri = req_pri
1432		641
1433	#define REQ_SEND \	642	#define REQ_SEND \
		643	PUTBACK; \
1434	req_send (req); \	644	req_submit (req); \
		645	SPAGAIN; \
1435	\	646	\
1436	if (GIMME_V != G_VOID) \	647	if (GIMME_V != G_VOID) \
1437	XPUSHs (req_sv (req, AIO_REQ_KLASS));	648	XPUSHs (req_sv (req, aio_req_stash));
1438		649
1439	MODULE = IO::AIO PACKAGE = IO::AIO	650	MODULE = IO::AIO PACKAGE = IO::AIO
1440		651
1441	PROTOTYPES: ENABLE	652	PROTOTYPES: ENABLE
1442		653
1443	BOOT:	654	BOOT:
1444	{	655	{
1445	stash = gv_stashpv ("IO::AIO", 1);	656	static const struct {
1446		657	const char *name;
1447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	658	IV iv;
1448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	659	} *civ, const_iv[] = {
1449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	660	# define const_niv(name, value) { # name, (IV) value },
1450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	661	# define const_iv(name) { # name, (IV) name },
1451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	662	# define const_eio(name) { # name, (IV) EIO_ ## name },
		663	const_iv (EXDEV)
		664	const_iv (ENOSYS)
		665	const_iv (O_RDONLY)
		666	const_iv (O_WRONLY)
		667	const_iv (O_CREAT)
		668	const_iv (O_TRUNC)
1452	#ifdef _WIN32	669	#ifndef _WIN32
1453	X_MUTEX_CHECK (wrklock);	670	const_iv (S_IFIFO)
1454	X_MUTEX_CHECK (reslock);
1455	X_MUTEX_CHECK (reqlock);
1456	X_MUTEX_CHECK (reqwait);
1457	X_MUTEX_CHECK (preadwritelock);
1458	X_MUTEX_CHECK (readdirlock);
1459
1460	X_COND_CHECK (reqwait);
1461	#else
1462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1463	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1464	#endif	671	#endif
		672	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		673	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		674	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		675	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		676	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		677	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
1465		678
		679	const_iv (ST_RDONLY)
		680	const_iv (ST_NOSUID)
		681	const_iv (ST_NODEV)
		682	const_iv (ST_NOEXEC)
		683	const_iv (ST_SYNCHRONOUS)
		684	const_iv (ST_MANDLOCK)
		685	const_iv (ST_WRITE)
		686	const_iv (ST_APPEND)
		687	const_iv (ST_IMMUTABLE)
		688	const_iv (ST_NOATIME)
		689	const_iv (ST_NODIRATIME)
		690	const_iv (ST_RELATIME)
		691
		692	const_iv (PROT_EXEC)
		693	const_iv (PROT_NONE)
		694	const_iv (PROT_READ)
		695	const_iv (PROT_WRITE)
		696
		697	/*const_iv (MAP_FIXED)*/
		698	const_iv (MAP_PRIVATE)
		699	const_iv (MAP_SHARED)
		700	const_iv (MAP_ANONYMOUS)
		701
		702	/* linuxish */
		703	const_iv (MAP_HUGETLB)
		704	const_iv (MAP_LOCKED)
		705	const_iv (MAP_NORESERVE)
		706	const_iv (MAP_POPULATE)
		707	const_iv (MAP_NONBLOCK)
		708
		709	const_iv (MCL_FUTURE)
		710	const_iv (MCL_CURRENT)
		711
		712	const_eio (MS_ASYNC)
		713	const_eio (MS_INVALIDATE)
		714	const_eio (MS_SYNC)
		715
		716	const_eio (MT_MODIFY)
		717
		718	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		719	const_eio (SYNC_FILE_RANGE_WRITE)
		720	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		721
		722	const_eio (READDIR_DENTS)
		723	const_eio (READDIR_DIRS_FIRST)
		724	const_eio (READDIR_STAT_ORDER)
		725	const_eio (READDIR_FOUND_UNKNOWN)
		726
		727	const_eio (DT_UNKNOWN)
		728	const_eio (DT_FIFO)
		729	const_eio (DT_CHR)
		730	const_eio (DT_DIR)
		731	const_eio (DT_BLK)
		732	const_eio (DT_REG)
		733	const_eio (DT_LNK)
		734	const_eio (DT_SOCK)
		735	const_eio (DT_WHT)
		736	};
		737
		738	aio_stash = gv_stashpv ("IO::AIO" , 1);
		739	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		740	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		741
		742	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		743	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
		744
		745	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		746
1466	create_respipe ();	747	create_respipe ();
1467		748
1468	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);	749	if (eio_init (want_poll, done_poll) < 0)
		750	croak ("IO::AIO: unable to initialise eio library");
		751
		752	/* atfork child called in fifo order, so before eio's handler */
		753	X_THREAD_ATFORK (0, 0, atfork_child);
1469	}	754	}
1470		755
1471	void	756	void
1472	max_poll_reqs (int nreqs)	757	max_poll_reqs (int nreqs)
1473	PROTOTYPE: $	758	PROTOTYPE: $
1474	CODE:	759	CODE:
1475	max_poll_reqs = nreqs;	760	eio_set_max_poll_reqs (nreqs);
1476		761
1477	void	762	void
1478	max_poll_time (double nseconds)	763	max_poll_time (double nseconds)
1479	PROTOTYPE: $	764	PROTOTYPE: $
1480	CODE:	765	CODE:
1481	max_poll_time = nseconds * AIO_TICKS;	766	eio_set_max_poll_time (nseconds);
1482		767
1483	void	768	void
1484	min_parallel (int nthreads)	769	min_parallel (int nthreads)
1485	PROTOTYPE: $	770	PROTOTYPE: $
		771	CODE:
		772	eio_set_min_parallel (nthreads);
1486		773
1487	void	774	void
1488	max_parallel (int nthreads)	775	max_parallel (int nthreads)
1489	PROTOTYPE: $	776	PROTOTYPE: $
		777	CODE:
		778	eio_set_max_parallel (nthreads);
1490		779
1491	void	780	void
1492	max_idle (int nthreads)	781	max_idle (int nthreads)
1493	PROTOTYPE: $	782	PROTOTYPE: $
1494	CODE:	783	CODE:
1495	set_max_idle (nthreads);	784	eio_set_max_idle (nthreads);
1496		785
1497	int	786	void
1498	max_outstanding (int maxreqs)	787	max_outstanding (int maxreqs)
1499	PROTOTYPE: $	788	PROTOTYPE: $
1500	CODE:	789	CODE:
1501	RETVAL = max_outstanding;
1502	max_outstanding = maxreqs;	790	max_outstanding = maxreqs;
1503	OUTPUT:
1504	RETVAL
1505		791
1506	void	792	void
1507	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	793	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1508	PROTOTYPE: $$$;$	794	PROTOTYPE: $$$;$
1509	PPCODE:	795	PPCODE:
1510	{	796	{
1511	dREQ;	797	dREQ;
1512		798
1513	req->type = REQ_OPEN;	799	req->type = EIO_OPEN;
1514	req->sv1 = newSVsv (pathname);	800	req->sv1 = newSVsv (pathname);
1515	req->ptr1 = SvPVbyte_nolen (req->sv1);	801	req->ptr1 = SvPVbyte_nolen (req->sv1);
1516	req->int1 = flags;	802	req->int1 = flags;
1517	req->mode = mode;	803	req->int2 = mode;
1518		804
1519	REQ_SEND;	805	REQ_SEND;
1520	}	806	}
1521		807
1522	void	808	void
1523	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	809	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1524	PROTOTYPE: $;$	810	PROTOTYPE: $;$
1525	ALIAS:	811	ALIAS:
1526	aio_fsync = REQ_FSYNC	812	aio_fsync = EIO_FSYNC
1527	aio_fdatasync = REQ_FDATASYNC	813	aio_fdatasync = EIO_FDATASYNC
1528	PPCODE:	814	PPCODE:
1529	{	815	{
		816	int fd = s_fileno_croak (fh, 0);
1530	dREQ;	817	dREQ;
1531		818
1532	req->type = ix;	819	req->type = ix;
1533	req->sv1 = newSVsv (fh);	820	req->sv1 = newSVsv (fh);
1534	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	821	req->int1 = fd;
1535		822
1536	REQ_SEND (req);	823	REQ_SEND (req);
1537	}	824	}
1538		825
1539	int	826	void
1540	_dup (int fd)	827	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1541	PROTOTYPE: $	828	PROTOTYPE: $$$$;$
1542	CODE:	829	PPCODE:
1543	RETVAL = dup (fd);	830	{
1544	OUTPUT:	831	int fd = s_fileno_croak (fh, 0);
1545	RETVAL	832	dREQ;
1546		833
		834	req->type = EIO_SYNC_FILE_RANGE;
		835	req->sv1 = newSVsv (fh);
		836	req->int1 = fd;
		837	req->offs = offset;
		838	req->size = nbytes;
		839	req->int2 = flags;
		840
		841	REQ_SEND (req);
		842	}
		843
1547	void	844	void
1548	_aio_close (int fd, SV *callback=&PL_sv_undef)	845	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1549	PROTOTYPE: $;$	846	PROTOTYPE: $;$
1550	PPCODE:	847	PPCODE:
1551	{	848	{
		849	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		850	int fd = s_fileno_croak (fh, 0);
1552	dREQ;	851	dREQ;
1553		852
		853	if (close_pipe < 0)
		854	{
		855	int pipefd [2];
		856
		857	if (pipe (pipefd) < 0
		858	|| close (pipefd [1]) < 0
		859	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		860	abort (); /*D*/
		861
		862	close_pipe = pipefd [0];
		863	}
		864
1554	req->type = REQ_CLOSE;	865	req->type = EIO_DUP2;
		866	req->int1 = close_pipe;
		867	req->sv2 = newSVsv (fh);
1555	req->int1 = fd;	868	req->int2 = fd;
1556		869
1557	REQ_SEND (req);	870	REQ_SEND (req);
1558	}	871	}
1559		872
1560	void	873	void
1561	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	874	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1562	ALIAS:	875	ALIAS:
1563	aio_read = REQ_READ	876	aio_read = EIO_READ
1564	aio_write = REQ_WRITE	877	aio_write = EIO_WRITE
1565	PROTOTYPE: $$$$$;$	878	PROTOTYPE: $$$$$;$
1566	PPCODE:	879	PPCODE:
1567	{	880	{
1568	STRLEN svlen;	881	STRLEN svlen;
		882	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1569	char *svptr = SvPVbyte (data, svlen);	883	char *svptr = SvPVbyte (data, svlen);
1570	UV len = SvUV (length);	884	UV len = SvUV (length);
1571		885
1572	SvUPGRADE (data, SVt_PV);
1573	SvPOK_on (data);
1574
1575	if (dataoffset < 0)	886	if (dataoffset < 0)
1576	dataoffset += svlen;	887	dataoffset += svlen;
1577		888
1578	if (dataoffset < 0 || dataoffset > svlen)	889	if (dataoffset < 0 || dataoffset > svlen)
1579	croak ("dataoffset outside of data scalar");	890	croak ("dataoffset outside of data scalar");
1580		891
1581	if (ix == REQ_WRITE)	892	if (ix == EIO_WRITE)
1582	{	893	{
1583	/* write: check length and adjust. */	894	/* write: check length and adjust. */
1584	if (!SvOK (length) || len + dataoffset > svlen)	895	if (!SvOK (length) || len + dataoffset > svlen)
1585	len = svlen - dataoffset;	896	len = svlen - dataoffset;
1586	}	897	}
1587	else	898	else
1588	{	899	{
1589	/* read: grow scalar as necessary */	900	/* read: check type and grow scalar as necessary */
		901	SvUPGRADE (data, SVt_PV);
1590	svptr = SvGROW (data, len + dataoffset + 1);	902	svptr = SvGROW (data, len + dataoffset + 1);
1591	}	903	}
1592		904
1593	if (len < 0)
1594	croak ("length must not be negative");
1595
1596	{	905	{
1597	dREQ;	906	dREQ;
1598		907
1599	req->type = ix;	908	req->type = ix;
1600	req->sv1 = newSVsv (fh);	909	req->sv1 = newSVsv (fh);
1601	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	910	req->int1 = fd;
1602	: IoOFP (sv_2io (fh)));
1603	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	911	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1604	req->size = len;	912	req->size = len;
1605	req->sv2 = SvREFCNT_inc (data);	913	req->sv2 = SvREFCNT_inc (data);
1606	req->ptr1 = (char *)svptr + dataoffset;	914	req->ptr2 = (char *)svptr + dataoffset;
1607	req->stroffset = dataoffset;	915	req->stroffset = dataoffset;
1608		916
1609	if (!SvREADONLY (data))	917	if (!SvREADONLY (data))
1610	{	918	{
1611	SvREADONLY_on (data);	919	SvREADONLY_on (data);
…		…
1622	PPCODE:	930	PPCODE:
1623	{	931	{
1624	SV *data;	932	SV *data;
1625	dREQ;	933	dREQ;
1626		934
1627	data = newSV (NAME_MAX);
1628	SvPOK_on (data);
1629
1630	req->type = REQ_READLINK;	935	req->type = EIO_READLINK;
1631	req->sv1 = newSVsv (path);	936	req->sv1 = newSVsv (path);
1632	req->ptr2 = SvPVbyte_nolen (req->sv1);	937	req->ptr1 = SvPVbyte_nolen (req->sv1);
1633	req->sv2 = data;
1634	req->ptr1 = SvPVbyte_nolen (data);
1635		938
1636	REQ_SEND;	939	REQ_SEND;
1637	}	940	}
1638		941
1639	void	942	void
1640	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	943	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1641	PROTOTYPE: $$$$;$	944	PROTOTYPE: $$$$;$
1642	PPCODE:	945	PPCODE:
1643	{	946	{
		947	int ifd = s_fileno_croak (in_fh , 0);
		948	int ofd = s_fileno_croak (out_fh, 1);
1644	dREQ;	949	dREQ;
1645		950
1646	req->type = REQ_SENDFILE;	951	req->type = EIO_SENDFILE;
1647	req->sv1 = newSVsv (out_fh);	952	req->sv1 = newSVsv (out_fh);
1648	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	953	req->int1 = ofd;
1649	req->sv2 = newSVsv (in_fh);	954	req->sv2 = newSVsv (in_fh);
1650	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	955	req->int2 = ifd;
1651	req->offs = SvVAL64 (in_offset);	956	req->offs = in_offset;
1652	req->size = length;	957	req->size = length;
1653		958
1654	REQ_SEND;	959	REQ_SEND;
1655	}	960	}
1656		961
1657	void	962	void
1658	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	963	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1659	PROTOTYPE: $$$;$	964	PROTOTYPE: $$$;$
1660	PPCODE:	965	PPCODE:
1661	{	966	{
		967	int fd = s_fileno_croak (fh, 0);
1662	dREQ;	968	dREQ;
1663		969
1664	req->type = REQ_READAHEAD;	970	req->type = EIO_READAHEAD;
1665	req->sv1 = newSVsv (fh);	971	req->sv1 = newSVsv (fh);
1666	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	972	req->int1 = fd;
1667	req->offs = SvVAL64 (offset);	973	req->offs = offset;
1668	req->size = length;	974	req->size = length;
1669		975
1670	REQ_SEND;	976	REQ_SEND;
1671	}	977	}
1672		978
1673	void	979	void
1674	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	980	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1675	ALIAS:	981	ALIAS:
1676	aio_stat = REQ_STAT	982	aio_stat = EIO_STAT
1677	aio_lstat = REQ_LSTAT	983	aio_lstat = EIO_LSTAT
		984	aio_statvfs = EIO_STATVFS
1678	PPCODE:	985	PPCODE:
1679	{	986	{
1680	dREQ;	987	dREQ;
1681		988
1682	req->ptr2 = malloc (sizeof (Stat_t));
1683	if (!req->ptr2)
1684	{
1685	req_destroy (req);
1686	croak ("out of memory during aio_stat statdata allocation");
1687	}
1688
1689	req->flags |= FLAG_PTR2_FREE;
1690	req->sv1 = newSVsv (fh_or_path);	989	req->sv1 = newSVsv (fh_or_path);
1691		990
1692	if (SvPOK (fh_or_path))	991	if (SvPOK (req->sv1))
1693	{	992	{
1694	req->type = ix;	993	req->type = ix;
1695	req->ptr1 = SvPVbyte_nolen (req->sv1);	994	req->ptr1 = SvPVbyte_nolen (req->sv1);
1696	}	995	}
1697	else	996	else
1698	{	997	{
1699	req->type = REQ_FSTAT;	998	req->type = ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT;
1700	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	999	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1701	}	1000	}
1702		1001
1703	REQ_SEND;	1002	REQ_SEND;
1704	}	1003	}
…		…
1711		1010
1712	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1011	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1713	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1012	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1714	req->sv1 = newSVsv (fh_or_path);	1013	req->sv1 = newSVsv (fh_or_path);
1715		1014
1716	if (SvPOK (fh_or_path))	1015	if (SvPOK (req->sv1))
1717	{	1016	{
1718	req->type = REQ_UTIME;	1017	req->type = EIO_UTIME;
1719	req->ptr1 = SvPVbyte_nolen (req->sv1);	1018	req->ptr1 = SvPVbyte_nolen (req->sv1);
1720	}	1019	}
1721	else	1020	else
1722	{	1021	{
1723	req->type = REQ_FUTIME;	1022	req->type = EIO_FUTIME;
1724	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1023	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1725	}	1024	}
1726		1025
1727	REQ_SEND;	1026	REQ_SEND;
1728	}	1027	}
…		…
1734	dREQ;	1033	dREQ;
1735		1034
1736	req->sv1 = newSVsv (fh_or_path);	1035	req->sv1 = newSVsv (fh_or_path);
1737	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1036	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1738		1037
1739	if (SvPOK (fh_or_path))	1038	if (SvPOK (req->sv1))
1740	{	1039	{
1741	req->type = REQ_TRUNCATE;	1040	req->type = EIO_TRUNCATE;
1742	req->ptr1 = SvPVbyte_nolen (req->sv1);	1041	req->ptr1 = SvPVbyte_nolen (req->sv1);
1743	}	1042	}
1744	else	1043	else
1745	{	1044	{
1746	req->type = REQ_FTRUNCATE;	1045	req->type = EIO_FTRUNCATE;
1747	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1046	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1748	}	1047	}
1749		1048
1750	REQ_SEND;	1049	REQ_SEND;
1751	}	1050	}
1752		1051
1753	void	1052	void
1754	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1053	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1054	ALIAS:
		1055	aio_chmod = EIO_CHMOD
		1056	aio_mkdir = EIO_MKDIR
1755	PPCODE:	1057	PPCODE:
1756	{	1058	{
1757	dREQ;	1059	dREQ;
1758		1060
1759	req->mode = mode;	1061	req->int2 = mode;
1760	req->sv1 = newSVsv (fh_or_path);	1062	req->sv1 = newSVsv (fh_or_path);
1761		1063
1762	if (SvPOK (fh_or_path))	1064	if (SvPOK (req->sv1))
1763	{	1065	{
1764	req->type = REQ_CHMOD;	1066	req->type = ix;
1765	req->ptr1 = SvPVbyte_nolen (req->sv1);	1067	req->ptr1 = SvPVbyte_nolen (req->sv1);
1766	}	1068	}
1767	else	1069	else
1768	{	1070	{
1769	req->type = REQ_FCHMOD;	1071	req->type = EIO_FCHMOD;
1770	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1072	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1771	}	1073	}
1772		1074
1773	REQ_SEND;	1075	REQ_SEND;
1774	}	1076	}
…		…
1781		1083
1782	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1084	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1783	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1085	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1784	req->sv1 = newSVsv (fh_or_path);	1086	req->sv1 = newSVsv (fh_or_path);
1785		1087
1786	if (SvPOK (fh_or_path))	1088	if (SvPOK (req->sv1))
1787	{	1089	{
1788	req->type = REQ_CHOWN;	1090	req->type = EIO_CHOWN;
1789	req->ptr1 = SvPVbyte_nolen (req->sv1);	1091	req->ptr1 = SvPVbyte_nolen (req->sv1);
1790	}	1092	}
1791	else	1093	else
1792	{	1094	{
1793	req->type = REQ_FCHOWN;	1095	req->type = EIO_FCHOWN;
1794	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1096	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1795	}	1097	}
1796		1098
1797	REQ_SEND;	1099	REQ_SEND;
1798	}	1100	}
1799		1101
1800	void	1102	void
		1103	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1104	PPCODE:
		1105	{
		1106	dREQ;
		1107
		1108	req->type = EIO_READDIR;
		1109	req->sv1 = newSVsv (pathname);
		1110	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1111	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1112
		1113	if (flags & EIO_READDIR_DENTS)
		1114	req->int1 |= EIO_READDIR_CUSTOM2;
		1115
		1116	REQ_SEND;
		1117	}
		1118
		1119	void
1801	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1120	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1802	ALIAS:	1121	ALIAS:
1803	aio_unlink = REQ_UNLINK	1122	aio_unlink = EIO_UNLINK
1804	aio_rmdir = REQ_RMDIR	1123	aio_rmdir = EIO_RMDIR
1805	aio_readdir = REQ_READDIR	1124	aio_readdir = EIO_READDIR
1806	PPCODE:	1125	PPCODE:
1807	{	1126	{
1808	dREQ;	1127	dREQ;
1809		1128
1810	req->type = ix;	1129	req->type = ix;
…		…
1813		1132
1814	REQ_SEND;	1133	REQ_SEND;
1815	}	1134	}
1816		1135
1817	void	1136	void
1818	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1819	PPCODE:
1820	{
1821	dREQ;
1822
1823	req->type = REQ_MKDIR;
1824	req->sv1 = newSVsv (pathname);
1825	req->ptr1 = SvPVbyte_nolen (req->sv1);
1826	req->mode = mode;
1827
1828	REQ_SEND;
1829	}
1830
1831	void
1832	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1137	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1833	ALIAS:	1138	ALIAS:
1834	aio_link = REQ_LINK	1139	aio_link = EIO_LINK
1835	aio_symlink = REQ_SYMLINK	1140	aio_symlink = EIO_SYMLINK
1836	aio_rename = REQ_RENAME	1141	aio_rename = EIO_RENAME
1837	PPCODE:	1142	PPCODE:
1838	{	1143	{
1839	dREQ;	1144	dREQ;
1840		1145
1841	req->type = ix;	1146	req->type = ix;
1842	req->sv2 = newSVsv (oldpath);	1147	req->sv1 = newSVsv (oldpath);
		1148	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1149	req->sv2 = newSVsv (newpath);
1843	req->ptr2 = SvPVbyte_nolen (req->sv2);	1150	req->ptr2 = SvPVbyte_nolen (req->sv2);
1844	req->sv1 = newSVsv (newpath);
1845	req->ptr1 = SvPVbyte_nolen (req->sv1);
1846		1151
1847	REQ_SEND;	1152	REQ_SEND;
1848	}	1153	}
1849		1154
1850	void	1155	void
1851	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1156	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1852	PPCODE:	1157	PPCODE:
1853	{	1158	{
1854	dREQ;	1159	dREQ;
1855		1160
1856	req->type = REQ_MKNOD;	1161	req->type = EIO_MKNOD;
1857	req->sv1 = newSVsv (pathname);	1162	req->sv1 = newSVsv (pathname);
1858	req->ptr1 = SvPVbyte_nolen (req->sv1);	1163	req->ptr1 = SvPVbyte_nolen (req->sv1);
1859	req->mode = (mode_t)mode;	1164	req->int2 = (mode_t)mode;
1860	req->offs = dev;	1165	req->offs = dev;
1861		1166
1862	REQ_SEND;	1167	REQ_SEND;
1863	}	1168	}
1864		1169
1865	void	1170	void
		1171	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1172	ALIAS:
		1173	aio_mtouch = EIO_MTOUCH
		1174	aio_msync = EIO_MSYNC
		1175	PROTOTYPE: $$$$;$
		1176	PPCODE:
		1177	{
		1178	STRLEN svlen;
		1179	UV len = SvUV (length);
		1180	char *svptr = SvPVbyte (data, svlen);
		1181
		1182	if (offset < 0)
		1183	offset += svlen;
		1184
		1185	if (offset < 0 || offset > svlen)
		1186	croak ("offset outside of scalar");
		1187
		1188	if (!SvOK (length) || len + offset > svlen)
		1189	len = svlen - offset;
		1190
		1191	{
		1192	dREQ;
		1193
		1194	req->type = ix;
		1195	req->size = len;
		1196	req->sv2 = SvREFCNT_inc (data);
		1197	req->ptr2 = (char *)svptr + offset;
		1198	req->int1 = flags;
		1199
		1200	REQ_SEND;
		1201	}
		1202	}
		1203
		1204	void
1866	aio_busy (double delay, SV *callback=&PL_sv_undef)	1205	aio_busy (double delay, SV *callback=&PL_sv_undef)
1867	PPCODE:	1206	PPCODE:
1868	{	1207	{
1869	dREQ;	1208	dREQ;
1870		1209
1871	req->type = REQ_BUSY;	1210	req->type = EIO_BUSY;
1872	req->nv1 = delay < 0. ? 0. : delay;	1211	req->nv1 = delay < 0. ? 0. : delay;
1873		1212
1874	REQ_SEND;	1213	REQ_SEND;
1875	}	1214	}
1876		1215
…		…
1879	PROTOTYPE: ;$	1218	PROTOTYPE: ;$
1880	PPCODE:	1219	PPCODE:
1881	{	1220	{
1882	dREQ;	1221	dREQ;
1883		1222
1884	req->type = REQ_GROUP;	1223	req->type = EIO_GROUP;
1885		1224
1886	req_send (req);	1225	req_submit (req);
1887	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1226	XPUSHs (req_sv (req, aio_grp_stash));
1888	}	1227	}
1889		1228
1890	void	1229	void
1891	aio_nop (SV *callback=&PL_sv_undef)	1230	aio_nop (SV *callback=&PL_sv_undef)
		1231	ALIAS:
		1232	aio_nop = EIO_NOP
		1233	aio_sync = EIO_SYNC
1892	PPCODE:	1234	PPCODE:
1893	{	1235	{
1894	dREQ;	1236	dREQ;
1895		1237
1896	req->type = REQ_NOP;	1238	req->type = ix;
1897		1239
1898	REQ_SEND;	1240	REQ_SEND;
1899	}	1241	}
1900		1242
1901	int	1243	int
1902	aioreq_pri (int pri = 0)	1244	aioreq_pri (int pri = 0)
1903	PROTOTYPE: ;$	1245	PROTOTYPE: ;$
1904	CODE:	1246	CODE:
1905	RETVAL = next_pri - PRI_BIAS;	1247	RETVAL = next_pri;
1906	if (items > 0)	1248	if (items > 0)
1907	{	1249	{
1908	if (pri < PRI_MIN) pri = PRI_MIN;	1250	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1909	if (pri > PRI_MAX) pri = PRI_MAX;	1251	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1910	next_pri = pri + PRI_BIAS;	1252	next_pri = pri;
1911	}	1253	}
1912	OUTPUT:	1254	OUTPUT:
1913	RETVAL	1255	RETVAL
1914		1256
1915	void	1257	void
1916	aioreq_nice (int nice = 0)	1258	aioreq_nice (int nice = 0)
1917	CODE:	1259	CODE:
1918	nice = next_pri - nice;	1260	nice = next_pri - nice;
1919	if (nice < PRI_MIN) nice = PRI_MIN;	1261	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1920	if (nice > PRI_MAX) nice = PRI_MAX;	1262	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1921	next_pri = nice + PRI_BIAS;	1263	next_pri = nice;
1922		1264
1923	void	1265	void
1924	flush ()	1266	flush ()
1925	PROTOTYPE:	1267	PROTOTYPE:
1926	CODE:	1268	CODE:
1927	while (nreqs)	1269	while (eio_nreqs ())
1928	{	1270	{
1929	poll_wait ();	1271	poll_wait ();
1930	poll_cb ();	1272	poll_cb ();
1931	}	1273	}
1932		1274
…		…
1941		1283
1942	int	1284	int
1943	poll_fileno()	1285	poll_fileno()
1944	PROTOTYPE:	1286	PROTOTYPE:
1945	CODE:	1287	CODE:
1946	RETVAL = respipe [0];	1288	RETVAL = s_epipe_fd (&respipe);
1947	OUTPUT:	1289	OUTPUT:
1948	RETVAL	1290	RETVAL
1949		1291
1950	int	1292	int
1951	poll_cb(...)	1293	poll_cb(...)
…		…
1959	poll_wait()	1301	poll_wait()
1960	PROTOTYPE:	1302	PROTOTYPE:
1961	CODE:	1303	CODE:
1962	poll_wait ();	1304	poll_wait ();
1963		1305
1964	void
1965	setsig (int signum = SIGIO)
1966	PROTOTYPE: ;$
1967	CODE:
1968	{
1969	if (block_sig_level)
1970	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1971
1972	X_LOCK (reslock);
1973	main_tid = pthread_self ();
1974	main_sig = signum;
1975	X_UNLOCK (reslock);
1976
1977	if (main_sig && npending)
1978	pthread_kill (main_tid, main_sig);
1979	}
1980
1981	void
1982	aio_block (SV *cb)
1983	PROTOTYPE: &
1984	PPCODE:
1985	{
1986	int count;
1987
1988	block_sig ();
1989	PUSHMARK (SP);
1990	PUTBACK;
1991	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1992	SPAGAIN;
1993	unblock_sig ();
1994
1995	if (SvTRUE (ERRSV))
1996	croak (0);
1997
1998	XSRETURN (count);
1999	}
2000
2001	int	1306	int
2002	nreqs()	1307	nreqs()
2003	PROTOTYPE:	1308	PROTOTYPE:
2004	CODE:	1309	CODE:
2005	RETVAL = nreqs;	1310	RETVAL = eio_nreqs ();
2006	OUTPUT:	1311	OUTPUT:
2007	RETVAL	1312	RETVAL
2008		1313
2009	int	1314	int
2010	nready()	1315	nready()
2011	PROTOTYPE:	1316	PROTOTYPE:
2012	CODE:	1317	CODE:
2013	RETVAL = get_nready ();	1318	RETVAL = eio_nready ();
2014	OUTPUT:	1319	OUTPUT:
2015	RETVAL	1320	RETVAL
2016		1321
2017	int	1322	int
2018	npending()	1323	npending()
2019	PROTOTYPE:	1324	PROTOTYPE:
2020	CODE:	1325	CODE:
2021	RETVAL = get_npending ();	1326	RETVAL = eio_npending ();
2022	OUTPUT:	1327	OUTPUT:
2023	RETVAL	1328	RETVAL
2024		1329
2025	int	1330	int
2026	nthreads()	1331	nthreads()
2027	PROTOTYPE:	1332	PROTOTYPE:
2028	CODE:	1333	CODE:
2029	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	1334	RETVAL = eio_nthreads ();
2030	RETVAL = started;
2031	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2032	OUTPUT:	1335	OUTPUT:
2033	RETVAL	1336	RETVAL
2034		1337
		1338	int
		1339	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1340	PROTOTYPE: $$$$
		1341	CODE:
		1342	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1343	RETVAL = posix_fadvise (fh, offset, length, advice);
		1344	#else
		1345	RETVAL = errno = ENOSYS; /* yes, this is actually correct */
		1346	#endif
		1347	OUTPUT:
		1348	RETVAL
		1349
		1350	ssize_t
		1351	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1352	PROTOTYPE: $$$$
		1353	CODE:
		1354	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1355	OUTPUT:
		1356	RETVAL
		1357
		1358	void
		1359	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1360	PROTOTYPE: $$$$$;$
		1361	PPCODE:
		1362	sv_unmagic (scalar, MMAP_MAGIC);
		1363	{
		1364	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1365	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1366	if (addr == (void *)-1)
		1367	XSRETURN_NO;
		1368
		1369	/* we store the length in mg_obj, as namlen is I32 :/ */
		1370	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1371	->mg_obj = (SV *)length;
		1372
		1373	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1374	if (!(prot & PROT_WRITE))
		1375	SvREADONLY_on (scalar);
		1376
		1377	SvPVX (scalar) = (char *)addr;
		1378	SvCUR_set (scalar, length);
		1379	SvLEN_set (scalar, 0);
		1380	SvPOK_only (scalar);
		1381
		1382	XSRETURN_YES;
		1383	}
		1384
		1385	void
		1386	munmap (SV *scalar)
		1387	PROTOTYPE: $
		1388	CODE:
		1389	sv_unmagic (scalar, MMAP_MAGIC);
		1390
		1391	int
		1392	mlockall (int flags)
		1393	PROTOTYPE: $
		1394	CODE:
		1395	#if _POSIX_MEMLOCK
		1396	#if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7
		1397	extern int mallopt (int, int);
		1398	mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */
		1399	#endif
		1400	mlockall (flags);
		1401	#else
		1402	RETVAL = -1;
		1403	errno = ENOSYS;
		1404	#endif
		1405	OUTPUT:
		1406	RETVAL
		1407
		1408	int
		1409	munlockall ()
		1410	PROTOTYPE:
		1411	CODE:
		1412	#if _POSIX_MEMLOCK
		1413	munlockall ();
		1414	#else
		1415	RETVAL = -1;
		1416	errno = ENOSYS;
		1417	#endif
		1418	OUTPUT:
		1419	RETVAL
		1420
		1421	void _on_next_submit (SV *cb)
		1422	CODE:
		1423	SvREFCNT_dec (on_next_submit);
		1424	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1425
2035	PROTOTYPES: DISABLE	1426	PROTOTYPES: DISABLE
2036		1427
2037	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1428	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2038		1429
2039	void	1430	void
2040	cancel (aio_req_ornot req)	1431	cancel (aio_req_ornot req)
2041	CODE:	1432	CODE:
2042	req_cancel (req);	1433	eio_cancel (req);
2043		1434
2044	void	1435	void
2045	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1436	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
2046	CODE:	1437	PPCODE:
		1438	{
		1439	if (GIMME_V != G_VOID)
		1440	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1441
		1442	if (items > 1)
		1443	{
		1444	SV *cb_cv =get_cb (callback);
		1445
2047	SvREFCNT_dec (req->callback);	1446	SvREFCNT_dec (req->callback);
2048	req->callback = newSVsv (callback);	1447	req->callback = SvREFCNT_inc (cb_cv);
		1448	}
		1449	}
2049		1450
2050	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1451	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2051		1452
2052	void	1453	void
2053	add (aio_req grp, ...)	1454	add (aio_req grp, ...)
2054	PPCODE:	1455	PPCODE:
2055	{	1456	{
2056	int i;	1457	int i;
2057	aio_req req;
2058
2059	if (main_sig && !block_sig_level)
2060	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2061		1458
2062	if (grp->int1 == 2)	1459	if (grp->int1 == 2)
2063	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1460	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2064		1461
2065	for (i = 1; i < items; ++i )	1462	for (i = 1; i < items; ++i )
2066	{	1463	{
		1464	aio_req req;
		1465
2067	if (GIMME_V != G_VOID)	1466	if (GIMME_V != G_VOID)
2068	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1467	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2069		1468
2070	req = SvAIO_REQ (ST (i));	1469	req = SvAIO_REQ (ST (i));
2071		1470
2072	if (req)	1471	if (req)
2073	{	1472	eio_grp_add (grp, req);
2074	++grp->size;
2075	req->grp = grp;
2076
2077	req->grp_prev = 0;
2078	req->grp_next = grp->grp_first;
2079
2080	if (grp->grp_first)
2081	grp->grp_first->grp_prev = req;
2082
2083	grp->grp_first = req;
2084	}
2085	}	1473	}
2086	}	1474	}
2087		1475
2088	void	1476	void
2089	cancel_subs (aio_req_ornot req)	1477	cancel_subs (aio_req_ornot req)
…		…
2098	AV *av;	1486	AV *av;
2099		1487
2100	grp->errorno = errno;	1488	grp->errorno = errno;
2101		1489
2102	av = newAV ();	1490	av = newAV ();
		1491	av_extend (av, items - 1);
2103		1492
2104	for (i = 1; i < items; ++i )	1493	for (i = 1; i < items; ++i )
2105	av_push (av, newSVsv (ST (i)));	1494	av_push (av, newSVsv (ST (i)));
2106		1495
2107	SvREFCNT_dec (grp->sv1);	1496	SvREFCNT_dec (grp->sv1);
…		…
2114	grp->errorno = errorno;	1503	grp->errorno = errorno;
2115		1504
2116	void	1505	void
2117	limit (aio_req grp, int limit)	1506	limit (aio_req grp, int limit)
2118	CODE:	1507	CODE:
2119	grp->int2 = limit;	1508	eio_grp_limit (grp, limit);
2120	aio_grp_feed (grp);
2121		1509
2122	void	1510	void
2123	feed (aio_req grp, SV *callback=&PL_sv_undef)	1511	feed (aio_req grp, SV *callback=&PL_sv_undef)
2124	CODE:	1512	CODE:
2125	{	1513	{
2126	SvREFCNT_dec (grp->sv2);	1514	SvREFCNT_dec (grp->sv2);
2127	grp->sv2 = newSVsv (callback);	1515	grp->sv2 = newSVsv (callback);
		1516	grp->feed = aio_grp_feed;
2128		1517
2129	if (grp->int2 <= 0)	1518	if (grp->int2 <= 0)
2130	grp->int2 = 2;	1519	grp->int2 = 2;
2131		1520
2132	aio_grp_feed (grp);	1521	eio_grp_limit (grp, grp->int2);
2133	}	1522	}
2134		1523

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