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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.102 by root, Sun Jun 3 09:44:17 2007 UTC vs.
Revision 1.158 by root, Sat Jan 2 14:11:32 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		8
9	#include "autoconf/config.h"	9	#include "schmorp.h"
10		10
11	#include <stddef.h>	11	#include <stddef.h>
12	#include <stdlib.h>	12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/time.h>
15	#include <sys/select.h>
16	#include <sys/types.h>	14	#include <sys/types.h>
17	#include <sys/stat.h>	15	#include <sys/stat.h>
18	#include <limits.h>	16	#include <limits.h>
19	#include <unistd.h>
20	#include <fcntl.h>	17	#include <fcntl.h>
21	#include <signal.h>
22	#include <sched.h>	18	#include <sched.h>
		19
		20	/* perl namespace pollution */
		21	#undef VERSION
		22
		23	#ifdef _WIN32
		24
		25	# define EIO_STRUCT_DIRENT Direntry_t
		26	# undef malloc
		27	# undef free
		28
		29	// perl overrides all those nice win32 functions
		30	# undef open
		31	# undef read
		32	# undef write
		33	# undef send
		34	# undef recv
		35	# undef stat
		36	# undef fstat
		37	# define lstat stat
		38	# undef truncate
		39	# undef ftruncate
		40	# undef open
		41	# undef close
		42	# undef unlink
		43	# undef rmdir
		44	# undef rename
		45	# undef lseek
		46
		47	# define chown(a,b,c) (errno = ENOSYS, -1)
		48	# define fchown(a,b,c) (errno = ENOSYS, -1)
		49	# define fchmod(a,b) (errno = ENOSYS, -1)
		50	# define symlink(a,b) (errno = ENOSYS, -1)
		51	# define readlink(a,b,c) (errno = ENOSYS, -1)
		52	# define mknod(a,b,c) (errno = ENOSYS, -1)
		53	# define truncate(a,b) (errno = ENOSYS, -1)
		54	# define ftruncate(fd,o) chsize ((fd), (o))
		55	# define fsync(fd) _commit (fd)
		56	# define opendir(fd) (errno = ENOSYS, 0)
		57	# define readdir(fd) (errno = ENOSYS, -1)
		58	# define closedir(fd) (errno = ENOSYS, -1)
		59	# define mkdir(a,b) mkdir (a)
		60
		61	#else
		62
		63	# include <sys/time.h>
		64	# include <sys/select.h>
		65	# include <unistd.h>
23	#include <utime.h>	66	# include <utime.h>
24
25	#if HAVE_SENDFILE
26	# if __linux
27	# include <sys/sendfile.h>
28	# elif __freebsd
29	# include <sys/socket.h>
30	# include <sys/uio.h>	67	# include <signal.h>
31	# elif __hpux	68	# define EIO_STRUCT_DIRENT struct dirent
32	# include <sys/socket.h>	69
33	# elif __solaris /* not yet */
34	# include <sys/sendfile.h>
35	# else
36	# error sendfile support requested but not available
37	# endif
38	#endif	70	#endif
39		71
40	/* number of seconds after which idle threads exit */	72	/* perl stupidly overrides readdir and maybe others */
41	#define IDLE_TIMEOUT 10	73	/* with thread-unsafe versions, imagine that :( */
		74	#undef readdir
		75	#undef opendir
		76	#undef closedir
42		77
43	/* used for struct dirent, AIX doesn't provide it */	78	#define EIO_STRUCT_STAT Stat_t
44	#ifndef NAME_MAX
45	# define NAME_MAX 4096
46	#endif
47
48	/* buffer size for various temporary buffers */
49	#define AIO_BUFSIZE 65536
50		79
51	/* use NV for 32 bit perls as it allows larger offsets */	80	/* use NV for 32 bit perls as it allows larger offsets */
52	#if IVSIZE >= 8	81	#if IVSIZE >= 8
		82	# define VAL64 IV
53	# define SvVAL64 SvIV	83	# define SvVAL64 SvIV
		84	# define newSVval64 newSViv
54	#else	85	#else
		86	# define VAL64 NV
55	# define SvVAL64 SvNV	87	# define SvVAL64 SvNV
		88	# define newSVval64 newSVnv
56	#endif	89	#endif
57		90
58	#define dBUF \	91	/*****************************************************************************/
59	char *aio_buf; \	92
60	LOCK (wrklock); \	93	#if __GNUC__ >= 3
61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	94	# define expect(expr,value) __builtin_expect ((expr),(value))
62	UNLOCK (wrklock); \	95	#else
63	if (!aio_buf) \	96	# define expect(expr,value) (expr)
64	return -1;	97	#endif
		98
		99	#define expect_false(expr) expect ((expr) != 0, 0)
		100	#define expect_true(expr) expect ((expr) != 0, 1)
		101
		102	/*****************************************************************************/
65		103
66	typedef SV SV8; /* byte-sv, used for argument-checking */	104	typedef SV SV8; /* byte-sv, used for argument-checking */
		105	typedef int aio_rfd; /* read file desriptor */
		106	typedef int aio_wfd; /* write file descriptor */
		107
		108	static HV *aio_stash, *aio_req_stash, *aio_grp_stash;
		109
		110	#define EIO_REQ_MEMBERS \
		111	SV *callback; \
		112	SV *sv1, *sv2; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/eio.h"
		119
		120	#ifndef POSIX_FADV_NORMAL
		121	# define POSIX_FADV_NORMAL 0
		122	# define NO_FADVISE 1
		123	#endif
		124
		125	#ifndef POSIX_FADV_SEQUENTIAL
		126	# define POSIX_FADV_SEQUENTIAL 0
		127	#endif
		128
		129	#ifndef POSIX_FADV_RANDOM
		130	# define POSIX_FADV_RANDOM 0
		131	#endif
		132
		133	#ifndef POSIX_FADV_NOREUSE
		134	# define POSIX_FADV_NOREUSE 0
		135	#endif
		136
		137	#ifndef POSIX_FADV_WILLNEED
		138	# define POSIX_FADV_WILLNEED 0
		139	#endif
		140
		141	#ifndef POSIX_FADV_DONTNEED
		142	# define POSIX_FADV_DONTNEED 0
		143	#endif
		144
		145	static int req_invoke (eio_req *req);
		146	#define EIO_FINISH(req) req_invoke (req)
		147	static void req_destroy (eio_req *grp);
		148	#define EIO_DESTROY(req) req_destroy (req)
67		149
68	enum {	150	enum {
69	REQ_QUIT,	151	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
70	REQ_OPEN, REQ_CLOSE,
71	REQ_READ, REQ_WRITE,
72	REQ_READAHEAD, REQ_SENDFILE,
73	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
74	REQ_UTIME, REQ_FUTIME,
75	REQ_CHMOD, REQ_FCHMOD,
76	REQ_CHOWN, REQ_FCHOWN,
77	REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79	REQ_MKNOD, REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,
83	};	152	};
84		153
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	154	#include "libeio/eio.c"
86	#define AIO_GRP_KLASS "IO::AIO::GRP"
87		155
88	typedef struct aio_cb
89	{
90	struct aio_cb *volatile next;
91
92	SV *callback;
93	SV *sv1, *sv2;
94	void *ptr1, *ptr2;
95	off_t offs;
96	size_t size;
97	ssize_t result;
98	double nv1, nv2;
99
100	STRLEN stroffset;
101	int type;
102	int int1, int2, int3;
103	int errorno;
104	mode_t mode; /* open */
105
106	unsigned char flags;
107	unsigned char pri;
108
109	SV *self; /* the perl counterpart of this request, if any */
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;
112
113	enum {
114	FLAG_CANCELLED = 0x01, /* request was cancelled */
115	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
116	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
117	};
118
119	typedef aio_cb *aio_req;	156	typedef eio_req *aio_req;
120	typedef aio_cb *aio_req_ornot;	157	typedef eio_req *aio_req_ornot;
121		158
122	enum {	159	static SV *on_next_submit;
123	PRI_MIN = -4,	160	static int next_pri = EIO_PRI_DEFAULT;
124	PRI_MAX = 4,	161	static int max_outstanding;
125		162
126	DEFAULT_PRI = 0,	163	static s_epipe respipe;
127	PRI_BIAS = -PRI_MIN,
128	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
129	};
130		164
131	#define AIO_TICKS ((1000000 + 1023) >> 10)
132
133	static unsigned int max_poll_time = 0;
134	static unsigned int max_poll_reqs = 0;
135
136	/* calculcate time difference in ~1/AIO_TICKS of a second */
137	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
138	{
139	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
140	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
141	}
142
143	static thread_t main_tid;
144	static int main_sig;
145	static int block_sig_level;
146
147	void block_sig ()
148	{
149	sigset_t ss;
150
151	if (block_sig_level++)
152	return;
153
154	if (!main_sig)
155	return;
156
157	sigemptyset (&ss);
158	sigaddset (&ss, main_sig);
159	pthread_sigmask (SIG_BLOCK, &ss, 0);
160	}
161
162	void unblock_sig ()
163	{
164	sigset_t ss;
165
166	if (--block_sig_level)
167	return;
168
169	if (!main_sig)
170	return;
171
172	sigemptyset (&ss);
173	sigaddset (&ss, main_sig);
174	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
175	}
176
177	static int next_pri = DEFAULT_PRI + PRI_BIAS;
178
179	static unsigned int started, idle, wanted;
180
181	/* worker threads management */
182	static mutex_t wrklock = MUTEX_INIT;
183
184	typedef struct worker {
185	/* locked by wrklock */
186	struct worker *prev, *next;
187
188	thread_t tid;
189
190	/* locked by reslock, reqlock or wrklock */
191	aio_req req; /* currently processed request */
192	void *dbuf;
193	DIR *dirp;
194	} worker;
195
196	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
197
198	static void worker_clear (worker *wrk)
199	{
200	if (wrk->dirp)
201	{
202	closedir (wrk->dirp);
203	wrk->dirp = 0;
204	}
205
206	if (wrk->dbuf)
207	{
208	free (wrk->dbuf);
209	wrk->dbuf = 0;
210	}
211	}
212
213	static void worker_free (worker *wrk)
214	{
215	wrk->next->prev = wrk->prev;
216	wrk->prev->next = wrk->next;
217
218	free (wrk);
219	}
220
221	static volatile unsigned int nreqs, nready, npending;
222	static volatile unsigned int max_idle = 4;
223	static volatile unsigned int max_outstanding = 0xffffffff;
224	static int respipe [2];
225
226	static mutex_t reslock = MUTEX_INIT;
227	static mutex_t reqlock = MUTEX_INIT;
228	static cond_t reqwait = COND_INIT;
229
230	#if WORDACCESS_UNSAFE
231
232	static unsigned int get_nready ()
233	{
234	unsigned int retval;
235
236	LOCK (reqlock);
237	retval = nready;
238	UNLOCK (reqlock);
239
240	return retval;
241	}
242
243	static unsigned int get_npending ()
244	{
245	unsigned int retval;
246
247	LOCK (reslock);
248	retval = npending;
249	UNLOCK (reslock);
250
251	return retval;
252	}
253
254	static unsigned int get_nthreads ()
255	{
256	unsigned int retval;
257
258	LOCK (wrklock);
259	retval = started;
260	UNLOCK (wrklock);
261
262	return retval;
263	}
264
265	#else
266
267	# define get_nready() nready
268	# define get_npending() npending
269	# define get_nthreads() started
270
271	#endif
272
273	/*
274	* a somewhat faster data structure might be nice, but
275	* with 8 priorities this actually needs <20 insns
276	* per shift, the most expensive operation.
277	*/
278	typedef struct {
279	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
280	int size;
281	} reqq;
282
283	static reqq req_queue;
284	static reqq res_queue;
285
286	int reqq_push (reqq *q, aio_req req)
287	{
288	int pri = req->pri;
289	req->next = 0;
290
291	if (q->qe[pri])
292	{
293	q->qe[pri]->next = req;
294	q->qe[pri] = req;
295	}
296	else
297	q->qe[pri] = q->qs[pri] = req;
298
299	return q->size++;
300	}
301
302	aio_req reqq_shift (reqq *q)
303	{
304	int pri;
305
306	if (!q->size)
307	return 0;
308
309	--q->size;
310
311	for (pri = NUM_PRI; pri--; )
312	{
313	aio_req req = q->qs[pri];
314
315	if (req)
316	{
317	if (!(q->qs[pri] = req->next))
318	q->qe[pri] = 0;
319
320	return req;
321	}
322	}
323
324	abort ();
325	}
326
327	static int poll_cb ();
328	static int req_invoke (aio_req req);
329	static void req_destroy (aio_req req);	165	static void req_destroy (aio_req req);
330	static void req_cancel (aio_req req);	166	static void req_cancel (aio_req req);
331		167
		168	static void want_poll (void)
		169	{
		170	/* write a dummy byte to the pipe so fh becomes ready */
		171	s_epipe_signal (&respipe);
		172	}
		173
		174	static void done_poll (void)
		175	{
		176	/* read any signals sent by the worker threads */
		177	s_epipe_drain (&respipe);
		178	}
		179
332	/* must be called at most once */	180	/* must be called at most once */
333	static SV *req_sv (aio_req req, const char *klass)	181	static SV *req_sv (aio_req req, HV *stash)
334	{	182	{
335	if (!req->self)	183	if (!req->self)
336	{	184	{
337	req->self = (SV *)newHV ();	185	req->self = (SV *)newHV ();
338	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	186	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
339	}	187	}
340		188
341	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	189	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
342	}	190	}
343		191
344	static aio_req SvAIO_REQ (SV *sv)	192	static aio_req SvAIO_REQ (SV *sv)
345	{	193	{
346	MAGIC *mg;	194	MAGIC *mg;
347		195
348	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	196	if (!SvROK (sv)
		197	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		198	&& SvSTASH (SvRV (sv)) != aio_req_stash
		199	&& !sv_derived_from (sv, "IO::AIO::REQ")))
349	croak ("object of class " AIO_REQ_KLASS " expected");	200	croak ("object of class IO::AIO::REQ expected");
350		201
351	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	202	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
352		203
353	return mg ? (aio_req)mg->mg_ptr : 0;	204	return mg ? (aio_req)mg->mg_ptr : 0;
354	}	205	}
355		206
356	static void aio_grp_feed (aio_req grp)	207	static void aio_grp_feed (aio_req grp)
357	{	208	{
358	block_sig ();	209	if (grp->sv2 && SvOK (grp->sv2))
359
360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
361	{	210	{
362	int old_len = grp->size;
363
364	if (grp->sv2 && SvOK (grp->sv2))
365	{
366	dSP;	211	dSP;
367		212
368	ENTER;	213	ENTER;
369	SAVETMPS;	214	SAVETMPS;
370	PUSHMARK (SP);	215	PUSHMARK (SP);
371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	216	XPUSHs (req_sv (grp, aio_grp_stash));
372	PUTBACK;	217	PUTBACK;
373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	218	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
374	SPAGAIN;	219	SPAGAIN;
375	FREETMPS;	220	FREETMPS;
376	LEAVE;	221	LEAVE;
377	}
378
379	/* stop if no progress has been made */
380	if (old_len == grp->size)
381	{
382	SvREFCNT_dec (grp->sv2);
383	grp->sv2 = 0;
384	break;
385	}
386	}	222	}
387
388	unblock_sig ();
389	}	223	}
390		224
391	static void aio_grp_dec (aio_req grp)	225	static void req_submit (eio_req *req)
392	{	226	{
393	--grp->size;	227	eio_submit (req);
394		228
395	/* call feeder, if applicable */	229	if (expect_false (on_next_submit))
396	aio_grp_feed (grp);
397
398	/* finish, if done */
399	if (!grp->size && grp->int1)
400	{	230	{
401	block_sig ();	231	dSP;
		232	SV *cb = sv_2mortal (on_next_submit);
402		233
403	if (!req_invoke (grp))	234	on_next_submit = 0;
404	{
405	req_destroy (grp);
406	unblock_sig ();
407	croak (0);
408	}
409		235
410	req_destroy (grp);	236	PUSHMARK (SP);
411	unblock_sig ();	237	PUTBACK;
		238	call_sv (cb, G_DISCARD | G_EVAL);
412	}	239	}
413	}	240	}
414		241
415	static int req_invoke (aio_req req)	242	static int req_invoke (eio_req *req)
416	{	243	{
417	dSP;	244	dSP;
418		245
419	if (req->flags & FLAG_SV2_RO_OFF)	246	if (req->flags & FLAG_SV2_RO_OFF)
420	SvREADONLY_off (req->sv2);	247	SvREADONLY_off (req->sv2);
421		248
422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	249	if (!EIO_CANCELLED (req) && req->callback)
423	{	250	{
424	ENTER;	251	ENTER;
425	SAVETMPS;	252	SAVETMPS;
426	PUSHMARK (SP);	253	PUSHMARK (SP);
427	EXTEND (SP, 1);	254	EXTEND (SP, 1);
428		255
429	switch (req->type)	256	switch (req->type)
430	{	257	{
431	case REQ_READDIR:	258	case EIO_READDIR:
432	{	259	{
433	SV *rv = &PL_sv_undef;	260	SV *rv = &PL_sv_undef;
434		261
435	if (req->result >= 0)	262	if (req->result >= 0)
436	{	263	{
437	int i;	264	int i;
438	char *buf = req->ptr2;	265	char *names = (char *)req->ptr2;
		266	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
439	AV *av = newAV ();	267	AV *av = newAV ();
440		268
441	av_extend (av, req->result - 1);	269	av_extend (av, req->result - 1);
442		270
443	for (i = 0; i < req->result; ++i)	271	for (i = 0; i < req->result; ++i)
444	{	272	{
445	SV *sv = newSVpv (buf, 0);	273	if (req->int1 & EIO_READDIR_DENTS)
		274	{
		275	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
446		276
		277	if (req->int1 & EIO_READDIR_CUSTOM2)
		278	{
		279	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		280	AV *avent = newAV ();
		281
		282	av_extend (avent, 2);
		283
		284	if (!sv_type [ent->type])
		285	{
		286	sv_type [ent->type] = newSViv (ent->type);
		287	SvREADONLY_on (sv_type [ent->type]);
		288	}
		289
		290	av_store (avent, 0, namesv);
		291	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		292	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		293
		294	av_store (av, i, newRV_noinc ((SV *)avent));
		295	}
		296	else
447	av_store (av, i, sv);	297	av_store (av, i, namesv);
		298
		299	++ent;
		300	}
		301	else
		302	{
		303	SV *name = newSVpv (names, 0);
		304	av_store (av, i, name);
448	buf += SvCUR (sv) + 1;	305	names += SvCUR (name) + 1;
		306	}
449	}	307	}
450		308
451	rv = sv_2mortal (newRV_noinc ((SV *)av));	309	rv = sv_2mortal (newRV_noinc ((SV *)av));
452	}	310	}
453		311
454	PUSHs (rv);	312	PUSHs (rv);
		313
		314	if (req->int1 & EIO_READDIR_CUSTOM1)
		315	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
455	}	316	}
456	break;	317	break;
457		318
458	case REQ_OPEN:	319	case EIO_OPEN:
459	{	320	{
460	/* convert fd to fh */	321	/* convert fd to fh */
461	SV *fh;	322	SV *fh = &PL_sv_undef;
462		323
463	PUSHs (sv_2mortal (newSViv (req->result)));	324	if (req->result >= 0)
464	PUTBACK;	325	{
465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	326	GV *gv = (GV *)sv_newmortal ();
466	SPAGAIN;	327	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		328	char sym [64];
		329	int symlen;
		330
		331	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		332	gv_init (gv, aio_stash, sym, symlen, 0);
467		333
468	fh = POPs;	334	symlen = snprintf (
469	PUSHMARK (SP);	335	sym,
		336	sizeof (sym),
		337	"%s&=%d",
		338	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		339	(int)req->result
		340	);
		341
		342	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		343	fh = (SV *)gv;
		344	}
		345
470	XPUSHs (fh);	346	PUSHs (fh);
471	}	347	}
472	break;	348	break;
473		349
474	case REQ_GROUP:	350	case EIO_GROUP:
475	req->int1 = 2; /* mark group as finished */	351	req->int1 = 2; /* mark group as finished */
476		352
477	if (req->sv1)	353	if (req->sv1)
478	{	354	{
479	int i;	355	int i;
…		…
483	for (i = 0; i <= AvFILL (av); ++i)	359	for (i = 0; i <= AvFILL (av); ++i)
484	PUSHs (*av_fetch (av, i, 0));	360	PUSHs (*av_fetch (av, i, 0));
485	}	361	}
486	break;	362	break;
487		363
488	case REQ_NOP:	364	case EIO_NOP:
489	case REQ_BUSY:	365	case EIO_BUSY:
490	break;	366	break;
491		367
492	case REQ_READLINK:	368	case EIO_READLINK:
493	if (req->result > 0)	369	if (req->result > 0)
494	{	370	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
495	SvCUR_set (req->sv2, req->result);
496	*SvEND (req->sv2) = 0;
497	PUSHs (req->sv2);
498	}
499	break;	371	break;
500		372
501	case REQ_STAT:	373	case EIO_STAT:
502	case REQ_LSTAT:	374	case EIO_LSTAT:
503	case REQ_FSTAT:	375	case EIO_FSTAT:
504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	376	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
505	PL_laststatval = req->result;	377	PL_laststatval = req->result;
506	PL_statcache = *(Stat_t *)(req->ptr2);	378	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
507	PUSHs (sv_2mortal (newSViv (req->result)));	379	PUSHs (sv_2mortal (newSViv (req->result)));
508	break;	380	break;
509		381
510	case REQ_READ:	382	case EIO_READ:
		383	{
511	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));	384	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
512	*SvEND (req->sv2) = 0;	385	*SvEND (req->sv2) = 0;
		386	SvPOK_only (req->sv2);
		387	SvSETMAGIC (req->sv2);
513	PUSHs (sv_2mortal (newSViv (req->result)));	388	PUSHs (sv_2mortal (newSViv (req->result)));
		389	}
514	break;	390	break;
		391
		392	case EIO_DUP2:
		393	if (req->result > 0)
		394	req->result = 0;
		395	/* FALLTHROUGH */
515		396
516	default:	397	default:
517	PUSHs (sv_2mortal (newSViv (req->result)));	398	PUSHs (sv_2mortal (newSViv (req->result)));
518	break;	399	break;
519	}	400	}
520		401
521	errno = req->errorno;	402	errno = req->errorno;
522		403
523	PUTBACK;	404	PUTBACK;
524	call_sv (req->callback, G_VOID | G_EVAL);	405	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
525	SPAGAIN;	406	SPAGAIN;
526		407
527	FREETMPS;	408	FREETMPS;
528	LEAVE;	409	LEAVE;
		410
		411	PUTBACK;
529	}	412	}
530		413
531	if (req->grp)
532	{
533	aio_req grp = req->grp;
534
535	/* unlink request */
536	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
537	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
538
539	if (grp->grp_first == req)
540	grp->grp_first = req->grp_next;
541
542	aio_grp_dec (grp);
543	}
544
545	return !SvTRUE (ERRSV);	414	return !!SvTRUE (ERRSV);
546	}	415	}
547		416
548	static void req_destroy (aio_req req)	417	static void req_destroy (aio_req req)
549	{	418	{
550	if (req->self)	419	if (req->self)
…		…
555		424
556	SvREFCNT_dec (req->sv1);	425	SvREFCNT_dec (req->sv1);
557	SvREFCNT_dec (req->sv2);	426	SvREFCNT_dec (req->sv2);
558	SvREFCNT_dec (req->callback);	427	SvREFCNT_dec (req->callback);
559		428
560	if (req->flags & FLAG_PTR2_FREE)
561	free (req->ptr2);
562
563	Safefree (req);	429	Safefree (req);
564	}	430	}
565		431
566	static void req_cancel_subs (aio_req grp)	432	static void req_cancel_subs (aio_req grp)
567	{	433	{
568	aio_req sub;	434	aio_req sub;
569		435
570	if (grp->type != REQ_GROUP)	436	if (grp->type != EIO_GROUP)
571	return;	437	return;
572		438
573	SvREFCNT_dec (grp->sv2);	439	SvREFCNT_dec (grp->sv2);
574	grp->sv2 = 0;	440	grp->sv2 = 0;
575		441
576	for (sub = grp->grp_first; sub; sub = sub->grp_next)	442	eio_grp_cancel (grp);
577	req_cancel (sub);
578	}	443	}
579		444
580	static void req_cancel (aio_req req)	445	static void
		446	create_respipe (void)
581	{	447	{
582	req->flags |= FLAG_CANCELLED;	448	if (s_epipe_renew (&respipe))
583		449	croak ("IO::AIO: unable to initialize result pipe");
584	req_cancel_subs (req);
585	}	450	}
586		451
587	static void *aio_proc (void *arg);
588
589	static void start_thread (void)
590	{
591	worker *wrk = calloc (1, sizeof (worker));
592
593	if (!wrk)
594	croak ("unable to allocate worker thread data");
595
596	LOCK (wrklock);
597
598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
599	{
600	wrk->prev = &wrk_first;
601	wrk->next = wrk_first.next;
602	wrk_first.next->prev = wrk;
603	wrk_first.next = wrk;
604	++started;
605	}
606	else
607	free (wrk);
608
609	UNLOCK (wrklock);
610	}
611
612	static void maybe_start_thread ()
613	{
614	if (get_nthreads () >= wanted)
615	return;
616
617	/* todo: maybe use idle here, but might be less exact */
618	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
619	return;
620
621	start_thread ();
622	}
623
624	static void req_send (aio_req req)
625	{
626	block_sig ();
627
628	++nreqs;
629
630	LOCK (reqlock);
631	++nready;
632	reqq_push (&req_queue, req);
633	COND_SIGNAL (reqwait);
634	UNLOCK (reqlock);
635
636	unblock_sig ();
637
638	maybe_start_thread ();
639	}
640
641	static void end_thread (void)
642	{
643	aio_req req;
644
645	Newz (0, req, 1, aio_cb);
646
647	req->type = REQ_QUIT;
648	req->pri = PRI_MAX + PRI_BIAS;
649
650	LOCK (reqlock);
651	reqq_push (&req_queue, req);
652	COND_SIGNAL (reqwait);
653	UNLOCK (reqlock);
654
655	LOCK (wrklock);
656	--started;
657	UNLOCK (wrklock);
658	}
659
660	static void set_max_idle (int nthreads)
661	{
662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
663	max_idle = nthreads <= 0 ? 1 : nthreads;
664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
665	}
666
667	static void min_parallel (int nthreads)
668	{
669	if (wanted < nthreads)
670	wanted = nthreads;
671	}
672
673	static void max_parallel (int nthreads)
674	{
675	if (wanted > nthreads)
676	wanted = nthreads;
677
678	while (started > wanted)
679	end_thread ();
680	}
681
682	static void poll_wait ()	452	static void poll_wait (void)
683	{	453	{
684	fd_set rfd;
685
686	while (nreqs)	454	while (eio_nreqs ())
687	{	455	{
688	int size;	456	int size;
689	if (WORDACCESS_UNSAFE) LOCK (reslock);	457
		458	X_LOCK (reslock);
690	size = res_queue.size;	459	size = res_queue.size;
691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	460	X_UNLOCK (reslock);
692		461
693	if (size)	462	if (size)
694	return;	463	return;
695		464
696	maybe_start_thread ();	465	etp_maybe_start_thread ();
697		466
698	FD_ZERO(&rfd);	467	s_epipe_wait (&respipe);
699	FD_SET(respipe [0], &rfd);
700
701	select (respipe [0] + 1, &rfd, 0, 0, 0);
702	}	468	}
703	}	469	}
704		470
705	static int poll_cb ()	471	static int poll_cb (void)
706	{	472	{
707	dSP;
708	int count = 0;
709	int maxreqs = max_poll_reqs;
710	int do_croak = 0;
711	struct timeval tv_start, tv_now;
712	aio_req req;
713
714	if (max_poll_time)
715	gettimeofday (&tv_start, 0);
716
717	block_sig ();
718
719	for (;;)	473	for (;;)
720	{	474	{
721	for (;;)	475	int res = eio_poll ();
722	{
723	maybe_start_thread ();
724		476
725	LOCK (reslock);	477	if (res > 0)
726	req = reqq_shift (&res_queue);
727
728	if (req)
729	{
730	--npending;
731
732	if (!res_queue.size)
733	{
734	/* read any signals sent by the worker threads */
735	char buf [4];
736	while (read (respipe [0], buf, 4) == 4)
737	;
738	}
739	}
740
741	UNLOCK (reslock);
742
743	if (!req)
744	break;
745
746	--nreqs;
747
748	if (req->type == REQ_GROUP && req->size)
749	{
750	req->int1 = 1; /* mark request as delayed */
751	continue;
752	}
753	else
754	{
755	if (!req_invoke (req))
756	{
757	req_destroy (req);
758	unblock_sig ();
759	croak (0);	478	croak (0);
760	}
761		479
762	count++;	480	if (!max_outstanding || max_outstanding > eio_nreqs ())
763	}	481	return res;
764
765	req_destroy (req);
766
767	if (maxreqs && !--maxreqs)
768	break;
769
770	if (max_poll_time)
771	{
772	gettimeofday (&tv_now, 0);
773
774	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
775	break;
776	}
777	}
778
779	if (nreqs <= max_outstanding)
780	break;
781		482
782	poll_wait ();	483	poll_wait ();
783
784	++maxreqs;
785	}	484	}
786
787	unblock_sig ();
788	return count;
789	}
790
791	static void create_pipe ()
792	{
793	if (pipe (respipe))
794	croak ("unable to initialize result pipe");
795
796	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
797	croak ("cannot set result pipe to nonblocking mode");
798
799	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
800	croak ("cannot set result pipe to nonblocking mode");
801	}
802
803	/*****************************************************************************/
804	/* work around various missing functions */
805
806	#if !HAVE_PREADWRITE
807	# define pread aio_pread
808	# define pwrite aio_pwrite
809
810	/*
811	* make our pread/pwrite safe against themselves, but not against
812	* normal read/write by using a mutex. slows down execution a lot,
813	* but that's your problem, not mine.
814	*/
815	static mutex_t preadwritelock = MUTEX_INIT;
816
817	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
818	{
819	ssize_t res;
820	off_t ooffset;
821
822	LOCK (preadwritelock);
823	ooffset = lseek (fd, 0, SEEK_CUR);
824	lseek (fd, offset, SEEK_SET);
825	res = read (fd, buf, count);
826	lseek (fd, ooffset, SEEK_SET);
827	UNLOCK (preadwritelock);
828
829	return res;
830	}
831
832	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
833	{
834	ssize_t res;
835	off_t ooffset;
836
837	LOCK (preadwritelock);
838	ooffset = lseek (fd, 0, SEEK_CUR);
839	lseek (fd, offset, SEEK_SET);
840	res = write (fd, buf, count);
841	lseek (fd, offset, SEEK_SET);
842	UNLOCK (preadwritelock);
843
844	return res;
845	}
846	#endif
847
848	#ifndef HAVE_FUTIMES
849
850	# define utimes(path,times) aio_utimes (path, times)
851	# define futimes(fd,times) aio_futimes (fd, times)
852
853	int aio_utimes (const char *filename, const struct timeval times[2])
854	{
855	if (times)
856	{
857	struct utimbuf buf;
858
859	buf.actime = times[0].tv_sec;
860	buf.modtime = times[1].tv_sec;
861
862	return utime (filename, &buf);
863	}
864	else
865	return utime (filename, 0);
866	}
867
868	int aio_futimes (int fd, const struct timeval tv[2])
869	{
870	errno = ENOSYS;
871	return -1;
872	}
873
874	#endif
875
876	#if !HAVE_FDATASYNC
877	# define fdatasync fsync
878	#endif
879
880	#if !HAVE_READAHEAD
881	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
882
883	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
884	{
885	dBUF;
886
887	while (count > 0)
888	{
889	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
890
891	pread (fd, aio_buf, len, offset);
892	offset += len;
893	count -= len;
894	}
895
896	errno = 0;
897	}
898
899	#endif
900
901	#if !HAVE_READDIR_R
902	# define readdir_r aio_readdir_r
903
904	static mutex_t readdirlock = MUTEX_INIT;
905
906	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
907	{
908	struct dirent *e;
909	int errorno;
910
911	LOCK (readdirlock);
912
913	e = readdir (dirp);
914	errorno = errno;
915
916	if (e)
917	{
918	*res = ent;
919	strcpy (ent->d_name, e->d_name);
920	}
921	else
922	*res = 0;
923
924	UNLOCK (readdirlock);
925
926	errno = errorno;
927	return e ? 0 : -1;
928	}
929	#endif
930
931	/* sendfile always needs emulation */
932	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
933	{
934	ssize_t res;
935
936	if (!count)
937	return 0;
938
939	#if HAVE_SENDFILE
940	# if __linux
941	res = sendfile (ofd, ifd, &offset, count);
942
943	# elif __freebsd
944	/*
945	* Of course, the freebsd sendfile is a dire hack with no thoughts
946	* wasted on making it similar to other I/O functions.
947	*/
948	{
949	off_t sbytes;
950	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
951
952	if (res < 0 && sbytes)
953	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
954	res = sbytes;
955	}
956
957	# elif __hpux
958	res = sendfile (ofd, ifd, offset, count, 0, 0);
959
960	# elif __solaris
961	{
962	struct sendfilevec vec;
963	size_t sbytes;
964
965	vec.sfv_fd = ifd;
966	vec.sfv_flag = 0;
967	vec.sfv_off = offset;
968	vec.sfv_len = count;
969
970	res = sendfilev (ofd, &vec, 1, &sbytes);
971
972	if (res < 0 && sbytes)
973	res = sbytes;
974	}
975
976	# endif
977	#else
978	res = -1;
979	errno = ENOSYS;
980	#endif
981
982	if (res < 0
983	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
984	#if __solaris
985	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
986	#endif
987	)
988	)
989	{
990	/* emulate sendfile. this is a major pain in the ass */
991	dBUF;
992
993	res = 0;
994
995	while (count)
996	{
997	ssize_t cnt;
998
999	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1000
1001	if (cnt <= 0)
1002	{
1003	if (cnt && !res) res = -1;
1004	break;
1005	}
1006
1007	cnt = write (ofd, aio_buf, cnt);
1008
1009	if (cnt <= 0)
1010	{
1011	if (cnt && !res) res = -1;
1012	break;
1013	}
1014
1015	offset += cnt;
1016	res += cnt;
1017	count -= cnt;
1018	}
1019	}
1020
1021	return res;
1022	}
1023
1024	/* read a full directory */
1025	static void scandir_ (aio_req req, worker *self)
1026	{
1027	DIR *dirp;
1028	union
1029	{
1030	struct dirent d;
1031	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1032	} *u;
1033	struct dirent *entp;
1034	char *name, *names;
1035	int memlen = 4096;
1036	int memofs = 0;
1037	int res = 0;
1038	int errorno;
1039
1040	LOCK (wrklock);
1041	self->dirp = dirp = opendir (req->ptr1);
1042	self->dbuf = u = malloc (sizeof (*u));
1043	req->flags |= FLAG_PTR2_FREE;
1044	req->ptr2 = names = malloc (memlen);
1045	UNLOCK (wrklock);
1046
1047	if (dirp && u && names)
1048	for (;;)
1049	{
1050	errno = 0;
1051	readdir_r (dirp, &u->d, &entp);
1052
1053	if (!entp)
1054	break;
1055
1056	name = entp->d_name;
1057
1058	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1059	{
1060	int len = strlen (name) + 1;
1061
1062	res++;
1063
1064	while (memofs + len > memlen)
1065	{
1066	memlen *= 2;
1067	LOCK (wrklock);
1068	req->ptr2 = names = realloc (names, memlen);
1069	UNLOCK (wrklock);
1070
1071	if (!names)
1072	break;
1073	}
1074
1075	memcpy (names + memofs, name, len);
1076	memofs += len;
1077	}
1078	}
1079
1080	if (errno)
1081	res = -1;
1082
1083	req->result = res;
1084	}
1085
1086	/*****************************************************************************/
1087
1088	static void *aio_proc (void *thr_arg)
1089	{
1090	aio_req req;
1091	struct timespec ts;
1092	worker *self = (worker *)thr_arg;
1093
1094	/* try to distribute timeouts somewhat evenly */
1095	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1096	* (1000000000UL / 1024UL);
1097
1098	for (;;)
1099	{
1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1101
1102	LOCK (reqlock);
1103
1104	for (;;)
1105	{
1106	self->req = req = reqq_shift (&req_queue);
1107
1108	if (req)
1109	break;
1110
1111	++idle;
1112
1113	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
1114	== ETIMEDOUT)
1115	{
1116	if (idle > max_idle)
1117	{
1118	--idle;
1119	UNLOCK (reqlock);
1120	LOCK (wrklock);
1121	--started;
1122	UNLOCK (wrklock);
1123	goto quit;
1124	}
1125
1126	/* we are allowed to idle, so do so without any timeout */
1127	COND_WAIT (reqwait, reqlock);
1128	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1129	}
1130
1131	--idle;
1132	}
1133
1134	--nready;
1135
1136	UNLOCK (reqlock);
1137
1138	errno = 0; /* strictly unnecessary */
1139
1140	if (!(req->flags & FLAG_CANCELLED))
1141	switch (req->type)
1142	{
1143	case REQ_READ: req->result = req->offs >= 0
1144	? pread (req->int1, req->ptr1, req->size, req->offs)
1145	: read (req->int1, req->ptr1, req->size); break;
1146	case REQ_WRITE: req->result = req->offs >= 0
1147	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1148	: write (req->int1, req->ptr1, req->size); break;
1149
1150	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1151	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1152
1153	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1154	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1155	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1156
1157	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1158	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1159	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1160	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1161
1162	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1163	case REQ_CLOSE: req->result = close (req->int1); break;
1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1165	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1166	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1169	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1170	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1171	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1172
1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
1175	case REQ_READDIR: scandir_ (req, self); break;
1176
1177	case REQ_BUSY:
1178	{
1179	struct timeval tv;
1180
1181	tv.tv_sec = req->nv1;
1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
1183
1184	req->result = select (0, 0, 0, 0, &tv);
1185	}
1186
1187	case REQ_UTIME:
1188	case REQ_FUTIME:
1189	{
1190	struct timeval tv[2];
1191	struct timeval *times;
1192
1193	if (req->nv1 != -1. || req->nv2 != -1.)
1194	{
1195	tv[0].tv_sec = req->nv1;
1196	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1197	tv[1].tv_sec = req->nv2;
1198	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1199
1200	times = tv;
1201	}
1202	else
1203	times = 0;
1204
1205
1206	req->result = req->type == REQ_FUTIME
1207	? futimes (req->int1, times)
1208	: utimes (req->ptr1, times);
1209	}
1210
1211	case REQ_GROUP:
1212	case REQ_NOP:
1213	break;
1214
1215	case REQ_QUIT:
1216	goto quit;
1217
1218	default:
1219	req->result = -1;
1220	break;
1221	}
1222
1223	req->errorno = errno;
1224
1225	LOCK (reslock);
1226
1227	++npending;
1228
1229	if (!reqq_push (&res_queue, req))
1230	{
1231	/* write a dummy byte to the pipe so fh becomes ready */
1232	write (respipe [1], &respipe, 1);
1233
1234	/* optionally signal the main thread asynchronously */
1235	if (main_sig)
1236	pthread_kill (main_tid, main_sig);
1237	}
1238
1239	self->req = 0;
1240	worker_clear (self);
1241
1242	UNLOCK (reslock);
1243	}
1244
1245	quit:
1246	LOCK (wrklock);
1247	worker_free (self);
1248	UNLOCK (wrklock);
1249
1250	return 0;
1251	}
1252
1253	/*****************************************************************************/
1254
1255	static void atfork_prepare (void)
1256	{
1257	LOCK (wrklock);
1258	LOCK (reqlock);
1259	LOCK (reslock);
1260	#if !HAVE_PREADWRITE
1261	LOCK (preadwritelock);
1262	#endif
1263	#if !HAVE_READDIR_R
1264	LOCK (readdirlock);
1265	#endif
1266	}
1267
1268	static void atfork_parent (void)
1269	{
1270	#if !HAVE_READDIR_R
1271	UNLOCK (readdirlock);
1272	#endif
1273	#if !HAVE_PREADWRITE
1274	UNLOCK (preadwritelock);
1275	#endif
1276	UNLOCK (reslock);
1277	UNLOCK (reqlock);
1278	UNLOCK (wrklock);
1279	}	485	}
1280		486
1281	static void atfork_child (void)	487	static void atfork_child (void)
1282	{	488	{
1283	aio_req prv;
1284
1285	while (prv = reqq_shift (&req_queue))
1286	req_destroy (prv);
1287
1288	while (prv = reqq_shift (&res_queue))
1289	req_destroy (prv);
1290
1291	while (wrk_first.next != &wrk_first)
1292	{
1293	worker *wrk = wrk_first.next;
1294
1295	if (wrk->req)
1296	req_destroy (wrk->req);
1297
1298	worker_clear (wrk);
1299	worker_free (wrk);
1300	}
1301
1302	started = 0;
1303	idle = 0;
1304	nreqs = 0;
1305	nready = 0;
1306	npending = 0;
1307
1308	close (respipe [0]);
1309	close (respipe [1]);
1310	create_pipe ();	489	create_respipe ();
		490	}
1311		491
1312	atfork_parent ();	492	static SV *
		493	get_cb (SV *cb_sv)
		494	{
		495	SvGETMAGIC (cb_sv);
		496	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
1313	}	497	}
1314		498
1315	#define dREQ \	499	#define dREQ \
		500	SV *cb_cv; \
1316	aio_req req; \	501	aio_req req; \
1317	int req_pri = next_pri; \	502	int req_pri = next_pri; \
1318	next_pri = DEFAULT_PRI + PRI_BIAS; \	503	next_pri = EIO_PRI_DEFAULT; \
1319	\	504	\
1320	if (SvOK (callback) && !SvROK (callback)) \	505	cb_cv = get_cb (callback); \
1321	croak ("callback must be undef or of reference type"); \
1322	\	506	\
1323	Newz (0, req, 1, aio_cb); \	507	Newz (0, req, 1, eio_req); \
1324	if (!req) \	508	if (!req) \
1325	croak ("out of memory during aio_req allocation"); \	509	croak ("out of memory during eio_req allocation"); \
1326	\	510	\
1327	req->callback = newSVsv (callback); \	511	req->callback = SvREFCNT_inc (cb_cv); \
1328	req->pri = req_pri	512	req->pri = req_pri
1329		513
1330	#define REQ_SEND \	514	#define REQ_SEND \
		515	PUTBACK; \
1331	req_send (req); \	516	req_submit (req); \
		517	SPAGAIN; \
1332	\	518	\
1333	if (GIMME_V != G_VOID) \	519	if (GIMME_V != G_VOID) \
1334	XPUSHs (req_sv (req, AIO_REQ_KLASS));	520	XPUSHs (req_sv (req, aio_req_stash));
1335		521
1336	MODULE = IO::AIO PACKAGE = IO::AIO	522	MODULE = IO::AIO PACKAGE = IO::AIO
1337		523
1338	PROTOTYPES: ENABLE	524	PROTOTYPES: ENABLE
1339		525
1340	BOOT:	526	BOOT:
1341	{	527	{
		528	static const struct {
		529	const char *name;
		530	IV iv;
		531	} *civ, const_iv[] = {
		532	# define const_iv(name, value) { # name, (IV) value },
		533	# define const_eio(name) { # name, (IV) EIO_ ## name },
		534	const_iv (EXDEV , EXDEV)
		535	const_iv (ENOSYS , ENOSYS)
		536	const_iv (O_RDONLY, O_RDONLY)
		537	const_iv (O_WRONLY, O_WRONLY)
		538	const_iv (O_CREAT , O_CREAT)
		539	const_iv (O_TRUNC , O_TRUNC)
		540	#ifndef _WIN32
		541	const_iv (S_IFIFO , S_IFIFO)
		542	#endif
		543	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		544	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		545	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		546	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		547	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		548	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		549
		550	const_eio (MS_ASYNC)
		551	const_eio (MS_INVALIDATE)
		552	const_eio (MS_SYNC)
		553
		554	const_eio (MT_MODIFY)
		555
		556	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		557	const_eio (SYNC_FILE_RANGE_WRITE)
		558	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		559
		560	const_eio (READDIR_DENTS)
		561	const_eio (READDIR_DIRS_FIRST)
		562	const_eio (READDIR_STAT_ORDER)
		563	const_eio (READDIR_FOUND_UNKNOWN)
		564
		565	const_eio (DT_UNKNOWN)
		566	const_eio (DT_FIFO)
		567	const_eio (DT_CHR)
		568	const_eio (DT_DIR)
		569	const_eio (DT_BLK)
		570	const_eio (DT_REG)
		571	const_eio (DT_LNK)
		572	const_eio (DT_SOCK)
		573	const_eio (DT_WHT)
		574	};
		575
1342	HV *stash = gv_stashpv ("IO::AIO", 1);	576	aio_stash = gv_stashpv ("IO::AIO" , 1);
		577	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		578	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
1343		579
1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	580	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	581	newCONSTSUB (aio_stash, (char *)civ->name, newSViv (civ->iv));
1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1351		582
1352	create_pipe ();	583	create_respipe ();
1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);	584
		585	if (eio_init (want_poll, done_poll) < 0)
		586	croak ("IO::AIO: unable to initialise eio library");
		587
		588	/* atfork child called in fifo order, so before eio's handler */
		589	X_THREAD_ATFORK (0, 0, atfork_child);
1354	}	590	}
1355		591
1356	void	592	void
1357	max_poll_reqs (int nreqs)	593	max_poll_reqs (int nreqs)
1358	PROTOTYPE: $	594	PROTOTYPE: $
1359	CODE:	595	CODE:
1360	max_poll_reqs = nreqs;	596	eio_set_max_poll_reqs (nreqs);
1361		597
1362	void	598	void
1363	max_poll_time (double nseconds)	599	max_poll_time (double nseconds)
1364	PROTOTYPE: $	600	PROTOTYPE: $
1365	CODE:	601	CODE:
1366	max_poll_time = nseconds * AIO_TICKS;	602	eio_set_max_poll_time (nseconds);
1367		603
1368	void	604	void
1369	min_parallel (int nthreads)	605	min_parallel (int nthreads)
1370	PROTOTYPE: $	606	PROTOTYPE: $
		607	CODE:
		608	eio_set_min_parallel (nthreads);
1371		609
1372	void	610	void
1373	max_parallel (int nthreads)	611	max_parallel (int nthreads)
1374	PROTOTYPE: $	612	PROTOTYPE: $
		613	CODE:
		614	eio_set_max_parallel (nthreads);
1375		615
1376	void	616	void
1377	max_idle (int nthreads)	617	max_idle (int nthreads)
1378	PROTOTYPE: $	618	PROTOTYPE: $
1379	CODE:	619	CODE:
1380	set_max_idle (nthreads);	620	eio_set_max_idle (nthreads);
1381		621
1382	int	622	void
1383	max_outstanding (int maxreqs)	623	max_outstanding (int maxreqs)
1384	PROTOTYPE: $	624	PROTOTYPE: $
1385	CODE:	625	CODE:
1386	RETVAL = max_outstanding;
1387	max_outstanding = maxreqs;	626	max_outstanding = maxreqs;
1388	OUTPUT:
1389	RETVAL
1390		627
1391	void	628	void
1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	629	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1393	PROTOTYPE: $$$;$	630	PROTOTYPE: $$$;$
1394	PPCODE:	631	PPCODE:
1395	{	632	{
1396	dREQ;	633	dREQ;
1397		634
1398	req->type = REQ_OPEN;	635	req->type = EIO_OPEN;
1399	req->sv1 = newSVsv (pathname);	636	req->sv1 = newSVsv (pathname);
1400	req->ptr1 = SvPVbyte_nolen (req->sv1);	637	req->ptr1 = SvPVbyte_nolen (req->sv1);
1401	req->int1 = flags;	638	req->int1 = flags;
1402	req->mode = mode;	639	req->int2 = mode;
1403		640
1404	REQ_SEND;	641	REQ_SEND;
		642	}
		643
		644	void
		645	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
		646	PROTOTYPE: $;$
		647	ALIAS:
		648	aio_fsync = EIO_FSYNC
		649	aio_fdatasync = EIO_FDATASYNC
		650	PPCODE:
		651	{
		652	int fd = s_fileno_croak (fh, 0);
		653	dREQ;
		654
		655	req->type = ix;
		656	req->sv1 = newSVsv (fh);
		657	req->int1 = fd;
		658
		659	REQ_SEND (req);
		660	}
		661
		662	void
		663	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		664	PROTOTYPE: $$$$;$
		665	PPCODE:
		666	{
		667	int fd = s_fileno_croak (fh, 0);
		668	dREQ;
		669
		670	req->type = EIO_SYNC_FILE_RANGE;
		671	req->sv1 = newSVsv (fh);
		672	req->int1 = fd;
		673	req->offs = offset;
		674	req->size = nbytes;
		675	req->int2 = flags;
		676
		677	REQ_SEND (req);
1405	}	678	}
1406		679
1407	void	680	void
1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)	681	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1409	PROTOTYPE: $;$	682	PROTOTYPE: $;$
1410	ALIAS:
1411	aio_close = REQ_CLOSE
1412	aio_fsync = REQ_FSYNC
1413	aio_fdatasync = REQ_FDATASYNC
1414	PPCODE:	683	PPCODE:
1415	{	684	{
		685	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		686	int fd = s_fileno_croak (fh, 0);
1416	dREQ;	687	dREQ;
1417		688
		689	if (close_pipe < 0)
		690	{
		691	int pipefd [2];
		692
		693	if (pipe (pipefd) < 0
		694	|| close (pipefd [1]) < 0
		695	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		696	abort (); /*D*/
		697
		698	close_pipe = pipefd [0];
		699	}
		700
1418	req->type = ix;	701	req->type = EIO_DUP2;
		702	req->int1 = close_pipe;
1419	req->sv1 = newSVsv (fh);	703	req->sv2 = newSVsv (fh);
1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	704	req->int2 = fd;
1421		705
1422	REQ_SEND (req);	706	REQ_SEND (req);
1423	}	707	}
1424		708
1425	void	709	void
1426	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	710	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1427	ALIAS:	711	ALIAS:
1428	aio_read = REQ_READ	712	aio_read = EIO_READ
1429	aio_write = REQ_WRITE	713	aio_write = EIO_WRITE
1430	PROTOTYPE: $$$$$;$	714	PROTOTYPE: $$$$$;$
1431	PPCODE:	715	PPCODE:
1432	{	716	{
1433	STRLEN svlen;	717	STRLEN svlen;
		718	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1434	char *svptr = SvPVbyte (data, svlen);	719	char *svptr = SvPVbyte (data, svlen);
1435	UV len = SvUV (length);	720	UV len = SvUV (length);
1436		721
1437	SvUPGRADE (data, SVt_PV);
1438	SvPOK_on (data);
1439
1440	if (dataoffset < 0)	722	if (dataoffset < 0)
1441	dataoffset += svlen;	723	dataoffset += svlen;
1442		724
1443	if (dataoffset < 0 || dataoffset > svlen)	725	if (dataoffset < 0 || dataoffset > svlen)
1444	croak ("dataoffset outside of data scalar");	726	croak ("dataoffset outside of data scalar");
1445		727
1446	if (ix == REQ_WRITE)	728	if (ix == EIO_WRITE)
1447	{	729	{
1448	/* write: check length and adjust. */	730	/* write: check length and adjust. */
1449	if (!SvOK (length) || len + dataoffset > svlen)	731	if (!SvOK (length) || len + dataoffset > svlen)
1450	len = svlen - dataoffset;	732	len = svlen - dataoffset;
1451	}	733	}
1452	else	734	else
1453	{	735	{
1454	/* read: grow scalar as necessary */	736	/* read: check type and grow scalar as necessary */
		737	SvUPGRADE (data, SVt_PV);
1455	svptr = SvGROW (data, len + dataoffset + 1);	738	svptr = SvGROW (data, len + dataoffset + 1);
1456	}	739	}
1457
1458	if (len < 0)
1459	croak ("length must not be negative");
1460		740
1461	{	741	{
1462	dREQ;	742	dREQ;
1463		743
1464	req->type = ix;	744	req->type = ix;
1465	req->sv1 = newSVsv (fh);	745	req->sv1 = newSVsv (fh);
1466	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	746	req->int1 = fd;
1467	: IoOFP (sv_2io (fh)));
1468	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	747	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1469	req->size = len;	748	req->size = len;
1470	req->sv2 = SvREFCNT_inc (data);	749	req->sv2 = SvREFCNT_inc (data);
1471	req->ptr1 = (char *)svptr + dataoffset;	750	req->ptr2 = (char *)svptr + dataoffset;
1472	req->stroffset = dataoffset;	751	req->stroffset = dataoffset;
1473		752
1474	if (!SvREADONLY (data))	753	if (!SvREADONLY (data))
1475	{	754	{
1476	SvREADONLY_on (data);	755	SvREADONLY_on (data);
…		…
1487	PPCODE:	766	PPCODE:
1488	{	767	{
1489	SV *data;	768	SV *data;
1490	dREQ;	769	dREQ;
1491		770
1492	data = newSV (NAME_MAX);
1493	SvPOK_on (data);
1494
1495	req->type = REQ_READLINK;	771	req->type = EIO_READLINK;
1496	req->sv1 = newSVsv (path);	772	req->sv1 = newSVsv (path);
1497	req->ptr2 = SvPVbyte_nolen (req->sv1);	773	req->ptr1 = SvPVbyte_nolen (req->sv1);
1498	req->sv2 = data;
1499	req->ptr1 = SvPVbyte_nolen (data);
1500		774
1501	REQ_SEND;	775	REQ_SEND;
1502	}	776	}
1503		777
1504	void	778	void
1505	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)	779	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1506	PROTOTYPE: $$$$;$	780	PROTOTYPE: $$$$;$
1507	PPCODE:	781	PPCODE:
1508	{	782	{
		783	int ifd = s_fileno_croak (in_fh , 0);
		784	int ofd = s_fileno_croak (out_fh, 1);
1509	dREQ;	785	dREQ;
1510		786
1511	req->type = REQ_SENDFILE;	787	req->type = EIO_SENDFILE;
1512	req->sv1 = newSVsv (out_fh);	788	req->sv1 = newSVsv (out_fh);
1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	789	req->int1 = ofd;
1514	req->sv2 = newSVsv (in_fh);	790	req->sv2 = newSVsv (in_fh);
1515	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	791	req->int2 = ifd;
1516	req->offs = SvVAL64 (in_offset);	792	req->offs = in_offset;
1517	req->size = length;	793	req->size = length;
1518		794
1519	REQ_SEND;	795	REQ_SEND;
1520	}	796	}
1521		797
1522	void	798	void
1523	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)	799	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1524	PROTOTYPE: $$$;$	800	PROTOTYPE: $$$;$
1525	PPCODE:	801	PPCODE:
1526	{	802	{
		803	int fd = s_fileno_croak (fh, 0);
1527	dREQ;	804	dREQ;
1528		805
1529	req->type = REQ_READAHEAD;	806	req->type = EIO_READAHEAD;
1530	req->sv1 = newSVsv (fh);	807	req->sv1 = newSVsv (fh);
1531	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	808	req->int1 = fd;
1532	req->offs = SvVAL64 (offset);	809	req->offs = offset;
1533	req->size = length;	810	req->size = length;
1534		811
1535	REQ_SEND;	812	REQ_SEND;
1536	}	813	}
1537		814
1538	void	815	void
1539	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)	816	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1540	ALIAS:	817	ALIAS:
1541	aio_stat = REQ_STAT	818	aio_stat = EIO_STAT
1542	aio_lstat = REQ_LSTAT	819	aio_lstat = EIO_LSTAT
1543	PPCODE:	820	PPCODE:
1544	{	821	{
1545	dREQ;	822	dREQ;
1546		823
1547	req->ptr2 = malloc (sizeof (Stat_t));
1548	if (!req->ptr2)
1549	{
1550	req_destroy (req);
1551	croak ("out of memory during aio_stat statdata allocation");
1552	}
1553
1554	req->flags |= FLAG_PTR2_FREE;
1555	req->sv1 = newSVsv (fh_or_path);	824	req->sv1 = newSVsv (fh_or_path);
1556		825
1557	if (SvPOK (fh_or_path))	826	if (SvPOK (req->sv1))
1558	{	827	{
1559	req->type = ix;	828	req->type = ix;
1560	req->ptr1 = SvPVbyte_nolen (req->sv1);	829	req->ptr1 = SvPVbyte_nolen (req->sv1);
1561	}	830	}
1562	else	831	else
1563	{	832	{
1564	req->type = REQ_FSTAT;	833	req->type = EIO_FSTAT;
1565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	834	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1566	}	835	}
1567		836
1568	REQ_SEND;	837	REQ_SEND;
1569	}	838	}
…		…
1576		845
1577	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	846	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1578	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	847	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1579	req->sv1 = newSVsv (fh_or_path);	848	req->sv1 = newSVsv (fh_or_path);
1580		849
1581	if (SvPOK (fh_or_path))	850	if (SvPOK (req->sv1))
1582	{	851	{
1583	req->type = REQ_UTIME;	852	req->type = EIO_UTIME;
1584	req->ptr1 = SvPVbyte_nolen (req->sv1);	853	req->ptr1 = SvPVbyte_nolen (req->sv1);
1585	}	854	}
1586	else	855	else
1587	{	856	{
1588	req->type = REQ_FUTIME;	857	req->type = EIO_FUTIME;
1589	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	858	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1590	}	859	}
1591		860
1592	REQ_SEND;	861	REQ_SEND;
1593	}	862	}
1594		863
1595	void	864	void
		865	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		866	PPCODE:
		867	{
		868	dREQ;
		869
		870	req->sv1 = newSVsv (fh_or_path);
		871	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		872
		873	if (SvPOK (req->sv1))
		874	{
		875	req->type = EIO_TRUNCATE;
		876	req->ptr1 = SvPVbyte_nolen (req->sv1);
		877	}
		878	else
		879	{
		880	req->type = EIO_FTRUNCATE;
		881	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		882	}
		883
		884	REQ_SEND;
		885	}
		886
		887	void
1596	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	888	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		889	ALIAS:
		890	aio_chmod = EIO_CHMOD
		891	aio_mkdir = EIO_MKDIR
1597	PPCODE:	892	PPCODE:
1598	{	893	{
1599	dREQ;	894	dREQ;
1600		895
1601	req->mode = mode;	896	req->int2 = mode;
1602	req->sv1 = newSVsv (fh_or_path);	897	req->sv1 = newSVsv (fh_or_path);
1603		898
1604	if (SvPOK (fh_or_path))	899	if (SvPOK (req->sv1))
1605	{	900	{
1606	req->type = REQ_CHMOD;	901	req->type = ix;
1607	req->ptr1 = SvPVbyte_nolen (req->sv1);	902	req->ptr1 = SvPVbyte_nolen (req->sv1);
1608	}	903	}
1609	else	904	else
1610	{	905	{
1611	req->type = REQ_FCHMOD;	906	req->type = EIO_FCHMOD;
1612	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	907	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1613	}	908	}
1614		909
1615	REQ_SEND;	910	REQ_SEND;
1616	}	911	}
…		…
1623		918
1624	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	919	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1625	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	920	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1626	req->sv1 = newSVsv (fh_or_path);	921	req->sv1 = newSVsv (fh_or_path);
1627		922
1628	if (SvPOK (fh_or_path))	923	if (SvPOK (req->sv1))
1629	{	924	{
1630	req->type = REQ_CHOWN;	925	req->type = EIO_CHOWN;
1631	req->ptr1 = SvPVbyte_nolen (req->sv1);	926	req->ptr1 = SvPVbyte_nolen (req->sv1);
1632	}	927	}
1633	else	928	else
1634	{	929	{
1635	req->type = REQ_FCHOWN;	930	req->type = EIO_FCHOWN;
1636	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	931	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1637	}	932	}
1638		933
1639	REQ_SEND;	934	REQ_SEND;
		935	}
		936
		937	void
		938	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		939	PPCODE:
		940	{
		941	dREQ;
		942
		943	req->type = EIO_READDIR;
		944	req->sv1 = newSVsv (pathname);
		945	req->ptr1 = SvPVbyte_nolen (req->sv1);
		946	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		947
		948	if (flags & EIO_READDIR_DENTS)
		949	req->int1 |= EIO_READDIR_CUSTOM2;
		950
		951	REQ_SEND;
1640	}	952	}
1641		953
1642	void	954	void
1643	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	955	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1644	ALIAS:	956	ALIAS:
1645	aio_unlink = REQ_UNLINK	957	aio_unlink = EIO_UNLINK
1646	aio_rmdir = REQ_RMDIR	958	aio_rmdir = EIO_RMDIR
1647	aio_readdir = REQ_READDIR	959	aio_readdir = EIO_READDIR
1648	PPCODE:	960	PPCODE:
1649	{	961	{
1650	dREQ;	962	dREQ;
1651		963
1652	req->type = ix;	964	req->type = ix;
…		…
1655		967
1656	REQ_SEND;	968	REQ_SEND;
1657	}	969	}
1658		970
1659	void	971	void
1660	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)	972	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		973	ALIAS:
		974	aio_link = EIO_LINK
		975	aio_symlink = EIO_SYMLINK
		976	aio_rename = EIO_RENAME
1661	PPCODE:	977	PPCODE:
1662	{	978	{
1663	dREQ;	979	dREQ;
1664		980
		981	req->type = ix;
		982	req->sv1 = newSVsv (oldpath);
		983	req->ptr1 = SvPVbyte_nolen (req->sv1);
		984	req->sv2 = newSVsv (newpath);
		985	req->ptr2 = SvPVbyte_nolen (req->sv2);
		986
		987	REQ_SEND;
		988	}
		989
		990	void
		991	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		992	PPCODE:
		993	{
		994	dREQ;
		995
1665	req->type = REQ_MKDIR;	996	req->type = EIO_MKNOD;
1666	req->sv1 = newSVsv (pathname);	997	req->sv1 = newSVsv (pathname);
1667	req->ptr1 = SvPVbyte_nolen (req->sv1);	998	req->ptr1 = SvPVbyte_nolen (req->sv1);
1668	req->mode = mode;
1669
1670	REQ_SEND;
1671	}
1672
1673	void
1674	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1675	ALIAS:
1676	aio_link = REQ_LINK
1677	aio_symlink = REQ_SYMLINK
1678	aio_rename = REQ_RENAME
1679	PPCODE:
1680	{
1681	dREQ;
1682
1683	req->type = ix;
1684	req->sv2 = newSVsv (oldpath);
1685	req->ptr2 = SvPVbyte_nolen (req->sv2);
1686	req->sv1 = newSVsv (newpath);
1687	req->ptr1 = SvPVbyte_nolen (req->sv1);
1688
1689	REQ_SEND;
1690	}
1691
1692	void
1693	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1694	PPCODE:
1695	{
1696	dREQ;
1697
1698	req->type = REQ_MKNOD;
1699	req->sv1 = newSVsv (pathname);
1700	req->ptr1 = SvPVbyte_nolen (req->sv1);
1701	req->mode = (mode_t)mode;	999	req->int2 = (mode_t)mode;
1702	req->offs = dev;	1000	req->offs = dev;
1703		1001
1704	REQ_SEND;	1002	REQ_SEND;
1705	}	1003	}
1706		1004
1707	void	1005	void
		1006	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1007	ALIAS:
		1008	aio_mtouch = EIO_MTOUCH
		1009	aio_msync = EIO_MSYNC
		1010	PROTOTYPE: $$$$;$
		1011	PPCODE:
		1012	{
		1013	STRLEN svlen;
		1014	UV len = SvUV (length);
		1015	char *svptr = SvPVbyte (data, svlen);
		1016
		1017	if (offset < 0)
		1018	offset += svlen;
		1019
		1020	if (offset < 0 || offset > svlen)
		1021	croak ("offset outside of scalar");
		1022
		1023	if (!SvOK (length) || len + offset > svlen)
		1024	len = svlen - offset;
		1025
		1026	{
		1027	dREQ;
		1028
		1029	req->type = ix;
		1030	req->size = len;
		1031	req->sv2 = SvREFCNT_inc (data);
		1032	req->ptr2 = (char *)svptr + offset;
		1033	req->int1 = flags;
		1034
		1035	REQ_SEND;
		1036	}
		1037	}
		1038
		1039	void
1708	aio_busy (double delay, SV *callback=&PL_sv_undef)	1040	aio_busy (double delay, SV *callback=&PL_sv_undef)
1709	PPCODE:	1041	PPCODE:
1710	{	1042	{
1711	dREQ;	1043	dREQ;
1712		1044
1713	req->type = REQ_BUSY;	1045	req->type = EIO_BUSY;
1714	req->nv1 = delay < 0. ? 0. : delay;	1046	req->nv1 = delay < 0. ? 0. : delay;
1715		1047
1716	REQ_SEND;	1048	REQ_SEND;
1717	}	1049	}
1718		1050
…		…
1721	PROTOTYPE: ;$	1053	PROTOTYPE: ;$
1722	PPCODE:	1054	PPCODE:
1723	{	1055	{
1724	dREQ;	1056	dREQ;
1725		1057
1726	req->type = REQ_GROUP;	1058	req->type = EIO_GROUP;
1727		1059
1728	req_send (req);	1060	req_submit (req);
1729	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1061	XPUSHs (req_sv (req, aio_grp_stash));
1730	}	1062	}
1731		1063
1732	void	1064	void
1733	aio_nop (SV *callback=&PL_sv_undef)	1065	aio_nop (SV *callback=&PL_sv_undef)
		1066	ALIAS:
		1067	aio_nop = EIO_NOP
		1068	aio_sync = EIO_SYNC
1734	PPCODE:	1069	PPCODE:
1735	{	1070	{
1736	dREQ;	1071	dREQ;
1737		1072
1738	req->type = REQ_NOP;	1073	req->type = ix;
1739		1074
1740	REQ_SEND;	1075	REQ_SEND;
1741	}	1076	}
1742		1077
1743	int	1078	int
1744	aioreq_pri (int pri = 0)	1079	aioreq_pri (int pri = 0)
1745	PROTOTYPE: ;$	1080	PROTOTYPE: ;$
1746	CODE:	1081	CODE:
1747	RETVAL = next_pri - PRI_BIAS;	1082	RETVAL = next_pri;
1748	if (items > 0)	1083	if (items > 0)
1749	{	1084	{
1750	if (pri < PRI_MIN) pri = PRI_MIN;	1085	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1751	if (pri > PRI_MAX) pri = PRI_MAX;	1086	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1752	next_pri = pri + PRI_BIAS;	1087	next_pri = pri;
1753	}	1088	}
1754	OUTPUT:	1089	OUTPUT:
1755	RETVAL	1090	RETVAL
1756		1091
1757	void	1092	void
1758	aioreq_nice (int nice = 0)	1093	aioreq_nice (int nice = 0)
1759	CODE:	1094	CODE:
1760	nice = next_pri - nice;	1095	nice = next_pri - nice;
1761	if (nice < PRI_MIN) nice = PRI_MIN;	1096	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1762	if (nice > PRI_MAX) nice = PRI_MAX;	1097	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1763	next_pri = nice + PRI_BIAS;	1098	next_pri = nice;
1764		1099
1765	void	1100	void
1766	flush ()	1101	flush ()
1767	PROTOTYPE:	1102	PROTOTYPE:
1768	CODE:	1103	CODE:
1769	while (nreqs)	1104	while (eio_nreqs ())
1770	{	1105	{
1771	poll_wait ();	1106	poll_wait ();
1772	poll_cb ();	1107	poll_cb ();
1773	}	1108	}
1774		1109
…		…
1783		1118
1784	int	1119	int
1785	poll_fileno()	1120	poll_fileno()
1786	PROTOTYPE:	1121	PROTOTYPE:
1787	CODE:	1122	CODE:
1788	RETVAL = respipe [0];	1123	RETVAL = s_epipe_fd (&respipe);
1789	OUTPUT:	1124	OUTPUT:
1790	RETVAL	1125	RETVAL
1791		1126
1792	int	1127	int
1793	poll_cb(...)	1128	poll_cb(...)
…		…
1801	poll_wait()	1136	poll_wait()
1802	PROTOTYPE:	1137	PROTOTYPE:
1803	CODE:	1138	CODE:
1804	poll_wait ();	1139	poll_wait ();
1805		1140
1806	void
1807	setsig (int signum = SIGIO)
1808	PROTOTYPE: ;$
1809	CODE:
1810	{
1811	if (block_sig_level)
1812	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1813
1814	LOCK (reslock);
1815	main_tid = pthread_self ();
1816	main_sig = signum;
1817	UNLOCK (reslock);
1818
1819	if (main_sig && npending)
1820	pthread_kill (main_tid, main_sig);
1821	}
1822
1823	void
1824	aio_block (SV *cb)
1825	PROTOTYPE: &
1826	PPCODE:
1827	{
1828	int count;
1829
1830	block_sig ();
1831	PUSHMARK (SP);
1832	PUTBACK;
1833	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1834	SPAGAIN;
1835	unblock_sig ();
1836
1837	if (SvTRUE (ERRSV))
1838	croak (0);
1839
1840	XSRETURN (count);
1841	}
1842
1843	int	1141	int
1844	nreqs()	1142	nreqs()
1845	PROTOTYPE:	1143	PROTOTYPE:
1846	CODE:	1144	CODE:
1847	RETVAL = nreqs;	1145	RETVAL = eio_nreqs ();
1848	OUTPUT:	1146	OUTPUT:
1849	RETVAL	1147	RETVAL
1850		1148
1851	int	1149	int
1852	nready()	1150	nready()
1853	PROTOTYPE:	1151	PROTOTYPE:
1854	CODE:	1152	CODE:
1855	RETVAL = get_nready ();	1153	RETVAL = eio_nready ();
1856	OUTPUT:	1154	OUTPUT:
1857	RETVAL	1155	RETVAL
1858		1156
1859	int	1157	int
1860	npending()	1158	npending()
1861	PROTOTYPE:	1159	PROTOTYPE:
1862	CODE:	1160	CODE:
1863	RETVAL = get_npending ();	1161	RETVAL = eio_npending ();
1864	OUTPUT:	1162	OUTPUT:
1865	RETVAL	1163	RETVAL
1866		1164
1867	int	1165	int
1868	nthreads()	1166	nthreads()
1869	PROTOTYPE:	1167	PROTOTYPE:
1870	CODE:	1168	CODE:
1871	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1169	RETVAL = eio_nthreads ();
1872	RETVAL = started;
1873	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1874	OUTPUT:	1170	OUTPUT:
1875	RETVAL	1171	RETVAL
1876		1172
		1173	int
		1174	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1175	PROTOTYPE: $$$$
		1176	CODE:
		1177	#if _XOPEN_SOURCE >= 600 && !NO_FADVISE
		1178	RETVAL = posix_fadvise (fh, offset, length, advice);
		1179	#else
		1180	RETVAL = errno = ENOSYS;
		1181	#endif
		1182	OUTPUT:
		1183	RETVAL
		1184
		1185	ssize_t
		1186	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1187	PROTOTYPE: $$$$
		1188	CODE:
		1189	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1190	OUTPUT:
		1191	RETVAL
		1192
		1193	void _on_next_submit (SV *cb)
		1194	CODE:
		1195	SvREFCNT_dec (on_next_submit);
		1196	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1197
1877	PROTOTYPES: DISABLE	1198	PROTOTYPES: DISABLE
1878		1199
1879	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1200	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1880		1201
1881	void	1202	void
1882	cancel (aio_req_ornot req)	1203	cancel (aio_req_ornot req)
1883	CODE:	1204	CODE:
1884	req_cancel (req);	1205	eio_cancel (req);
1885		1206
1886	void	1207	void
1887	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1208	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1888	CODE:	1209	PPCODE:
		1210	{
		1211	if (GIMME_V != G_VOID)
		1212	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1213
		1214	if (items > 1)
		1215	{
		1216	SV *cb_cv =get_cb (callback);
		1217
1889	SvREFCNT_dec (req->callback);	1218	SvREFCNT_dec (req->callback);
1890	req->callback = newSVsv (callback);	1219	req->callback = SvREFCNT_inc (cb_cv);
		1220	}
		1221	}
1891		1222
1892	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1223	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1893		1224
1894	void	1225	void
1895	add (aio_req grp, ...)	1226	add (aio_req grp, ...)
1896	PPCODE:	1227	PPCODE:
1897	{	1228	{
1898	int i;	1229	int i;
1899	aio_req req;
1900
1901	if (main_sig && !block_sig_level)
1902	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1903		1230
1904	if (grp->int1 == 2)	1231	if (grp->int1 == 2)
1905	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1232	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1906		1233
1907	for (i = 1; i < items; ++i )	1234	for (i = 1; i < items; ++i )
1908	{	1235	{
		1236	aio_req req;
		1237
1909	if (GIMME_V != G_VOID)	1238	if (GIMME_V != G_VOID)
1910	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1239	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1911		1240
1912	req = SvAIO_REQ (ST (i));	1241	req = SvAIO_REQ (ST (i));
1913		1242
1914	if (req)	1243	if (req)
1915	{	1244	eio_grp_add (grp, req);
1916	++grp->size;
1917	req->grp = grp;
1918
1919	req->grp_prev = 0;
1920	req->grp_next = grp->grp_first;
1921
1922	if (grp->grp_first)
1923	grp->grp_first->grp_prev = req;
1924
1925	grp->grp_first = req;
1926	}
1927	}	1245	}
1928	}	1246	}
1929		1247
1930	void	1248	void
1931	cancel_subs (aio_req_ornot req)	1249	cancel_subs (aio_req_ornot req)
…		…
1940	AV *av;	1258	AV *av;
1941		1259
1942	grp->errorno = errno;	1260	grp->errorno = errno;
1943		1261
1944	av = newAV ();	1262	av = newAV ();
		1263	av_extend (av, items - 1);
1945		1264
1946	for (i = 1; i < items; ++i )	1265	for (i = 1; i < items; ++i )
1947	av_push (av, newSVsv (ST (i)));	1266	av_push (av, newSVsv (ST (i)));
1948		1267
1949	SvREFCNT_dec (grp->sv1);	1268	SvREFCNT_dec (grp->sv1);
…		…
1956	grp->errorno = errorno;	1275	grp->errorno = errorno;
1957		1276
1958	void	1277	void
1959	limit (aio_req grp, int limit)	1278	limit (aio_req grp, int limit)
1960	CODE:	1279	CODE:
1961	grp->int2 = limit;	1280	eio_grp_limit (grp, limit);
1962	aio_grp_feed (grp);
1963		1281
1964	void	1282	void
1965	feed (aio_req grp, SV *callback=&PL_sv_undef)	1283	feed (aio_req grp, SV *callback=&PL_sv_undef)
1966	CODE:	1284	CODE:
1967	{	1285	{
1968	SvREFCNT_dec (grp->sv2);	1286	SvREFCNT_dec (grp->sv2);
1969	grp->sv2 = newSVsv (callback);	1287	grp->sv2 = newSVsv (callback);
		1288	grp->feed = aio_grp_feed;
1970		1289
1971	if (grp->int2 <= 0)	1290	if (grp->int2 <= 0)
1972	grp->int2 = 2;	1291	grp->int2 = 2;
1973		1292
1974	aio_grp_feed (grp);	1293	eio_grp_limit (grp, grp->int2);
1975	}	1294	}
1976		1295

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