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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.97 by root, Sun Jan 7 22:59:57 2007 UTC vs.
Revision 1.148 by root, Wed Jun 17 01:14:48 2009 UTC

1	/* solaris */	1	#include "libeio/xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"
18
19	#include <pthread.h>
20
21	#include <stddef.h>	9	#include <stddef.h>
22	#include <stdlib.h>	10	#include <stdlib.h>
23	#include <errno.h>	11	#include <errno.h>
24	#include <sys/time.h>
25	#include <sys/select.h>
26	#include <sys/types.h>	12	#include <sys/types.h>
27	#include <sys/stat.h>	13	#include <sys/stat.h>
28	#include <limits.h>	14	#include <limits.h>
29	#include <unistd.h>
30	#include <fcntl.h>	15	#include <fcntl.h>
31	#include <signal.h>
32	#include <sched.h>	16	#include <sched.h>
33		17
34	#if HAVE_SENDFILE	18	/* perl namespace pollution */
35	# if __linux	19	#undef VERSION
36	# include <sys/sendfile.h>	20
37	# elif __freebsd	21	#ifdef _WIN32
38	# include <sys/socket.h>	22
39	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
40	# elif __hpux	24	# undef malloc
41	# include <sys/socket.h>	25	# undef free
42	# elif __solaris /* not yet */	26
43	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
44	# else	59	#else
45	# error sendfile support requested but not available	60
46	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
47	#endif	68	#endif
48		69
49	/* number of seconds after which idle threads exit */	70	/* perl stupidly overrides readdir and maybe others */
50	#define IDLE_TIMEOUT 10	71	/* with thread-unsafe versions, imagine that :( */
		72	#undef readdir
		73	#undef opendir
		74	#undef closedir
51		75
52	/* used for struct dirent, AIX doesn't provide it */	76	#define EIO_STRUCT_STAT Stat_t
53	#ifndef NAME_MAX	77
54	# define NAME_MAX 4096	78	/* use NV for 32 bit perls as it allows larger offsets */
		79	#if IVSIZE >= 8
		80	# define VAL64 IV
		81	# define SvVAL64 SvIV
		82	# define newSVval64 newSViv
		83	#else
		84	# define VAL64 NV
		85	# define SvVAL64 SvNV
		86	# define newSVval64 newSVnv
55	#endif	87	#endif
56		88
57	#ifndef PTHREAD_STACK_MIN	89	/*****************************************************************************/
58	/* care for broken platforms, e.g. windows */	90
59	# define PTHREAD_STACK_MIN 16384	91	#if __GNUC__ >= 3
		92	# define expect(expr,value) __builtin_expect ((expr),(value))
		93	#else
		94	# define expect(expr,value) (expr)
60	#endif	95	#endif
61		96
62	#if __ia64	97	#define expect_false(expr) expect ((expr) != 0, 0)
63	# define STACKSIZE 65536	98	#define expect_true(expr) expect ((expr) != 0, 1)
64	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
65	# define STACKSIZE PTHREAD_STACK_MIN
66	#else
67	# define STACKSIZE 16384
68	#endif
69		99
70	/* wether word reads are potentially non-atomic.	100	/*****************************************************************************/
71	* this is conservatice, likely most arches this runs
72	* on have atomic word read/writes.
73	*/
74	#ifndef WORDACCESS_UNSAFE
75	# if __i386 || __x86_64
76	# define WORDACCESS_UNSAFE 0
77	# else
78	# define WORDACCESS_UNSAFE 1
79	# endif
80	#endif
81		101
82	/* buffer size for various temporary buffers */	102	static HV *stash;
83	#define AIO_BUFSIZE 65536
84
85	#define dBUF \
86	char *aio_buf; \
87	LOCK (wrklock); \
88	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
89	UNLOCK (wrklock); \
90	if (!aio_buf) \
91	return -1;
92
93	typedef SV SV8; /* byte-sv, used for argument-checking */	103	typedef SV SV8; /* byte-sv, used for argument-checking */
94		104	typedef int aio_rfd; /* read file desriptor */
95	enum {	105	typedef int aio_wfd; /* write file descriptor */
96	REQ_QUIT,
97	REQ_OPEN, REQ_CLOSE,
98	REQ_READ, REQ_WRITE, REQ_READAHEAD,
99	REQ_SENDFILE,
100	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
101	REQ_FSYNC, REQ_FDATASYNC,
102	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
103	REQ_MKNOD, REQ_READDIR,
104	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
105	REQ_GROUP, REQ_NOP,
106	REQ_BUSY,
107	};
108		106
109	#define AIO_REQ_KLASS "IO::AIO::REQ"	107	#define AIO_REQ_KLASS "IO::AIO::REQ"
110	#define AIO_GRP_KLASS "IO::AIO::GRP"	108	#define AIO_GRP_KLASS "IO::AIO::GRP"
111		109
112	typedef struct aio_cb	110	#define EIO_REQ_MEMBERS \
113	{
114	struct aio_cb *volatile next;
115
116	SV *callback, *fh;	111	SV *callback; \
117	SV *sv1, *sv2;	112	SV *sv1, *sv2; \
118	void *ptr1, *ptr2;
119	off_t offs;
120	size_t size;
121	ssize_t result;
122
123	STRLEN stroffset;	113	STRLEN stroffset; \
124	int type;	114	SV *self;
125	int int1, int2;
126	int errorno;
127	mode_t mode; /* open */
128		115
129	unsigned char flags;	116	#define EIO_NO_WRAPPERS 1
130	unsigned char pri;
131		117
132	SV *self; /* the perl counterpart of this request, if any */	118	#include "libeio/eio.h"
133	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	119
134	} aio_cb;	120	#ifndef POSIX_FADV_NORMAL
		121	# define POSIX_FADV_NORMAL 0
		122	#endif
		123
		124	#ifndef POSIX_FADV_SEQUENTIAL
		125	# define POSIX_FADV_SEQUENTIAL 0
		126	#endif
		127
		128	#ifndef POSIX_FADV_RANDOM
		129	# define POSIX_FADV_RANDOM 0
		130	#endif
		131
		132	#ifndef POSIX_FADV_NOREUSE
		133	# define POSIX_FADV_NOREUSE 0
		134	#endif
		135
		136	#ifndef POSIX_FADV_WILLNEED
		137	# define POSIX_FADV_WILLNEED 0
		138	#endif
		139
		140	#ifndef POSIX_FADV_DONTNEED
		141	# define POSIX_FADV_DONTNEED 0
		142	#endif
		143
		144	static int req_invoke (eio_req *req);
		145	#define EIO_FINISH(req) req_invoke (req)
		146	static void req_destroy (eio_req *grp);
		147	#define EIO_DESTROY(req) req_destroy (req)
135		148
136	enum {	149	enum {
137	FLAG_CANCELLED = 0x01, /* request was cancelled */
138	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */	150	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
139	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
140	};	151	};
141		152
		153	#include "libeio/eio.c"
		154
142	typedef aio_cb *aio_req;	155	typedef eio_req *aio_req;
143	typedef aio_cb *aio_req_ornot;	156	typedef eio_req *aio_req_ornot;
144		157
145	enum {	158	static SV *on_next_submit;
146	PRI_MIN = -4,	159	static int next_pri = EIO_PRI_DEFAULT;
147	PRI_MAX = 4,	160	static int max_outstanding;
148		161
149	DEFAULT_PRI = 0,	162	static int respipe_osf [2], respipe [2] = { -1, -1 };
150	PRI_BIAS = -PRI_MIN,
151	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
152	};
153		163
154	#define AIO_TICKS ((1000000 + 1023) >> 10)
155
156	static unsigned int max_poll_time = 0;
157	static unsigned int max_poll_reqs = 0;
158
159	/* calculcate time difference in ~1/AIO_TICKS of a second */
160	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
161	{
162	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
163	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
164	}
165
166	static pthread_t main_tid;
167	static int main_sig;
168	static int block_sig_level;
169
170	void block_sig ()
171	{
172	sigset_t ss;
173
174	if (block_sig_level++)
175	return;
176
177	if (!main_sig)
178	return;
179
180	sigemptyset (&ss);
181	sigaddset (&ss, main_sig);
182	pthread_sigmask (SIG_BLOCK, &ss, 0);
183	}
184
185	void unblock_sig ()
186	{
187	sigset_t ss;
188
189	if (--block_sig_level)
190	return;
191
192	if (!main_sig)
193	return;
194
195	sigemptyset (&ss);
196	sigaddset (&ss, main_sig);
197	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
198	}
199
200	static int next_pri = DEFAULT_PRI + PRI_BIAS;
201
202	static unsigned int started, idle, wanted;
203
204	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
205	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
206	#else
207	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
208	#endif
209
210	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
211	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
212
213	/* worker threads management */
214	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
215
216	typedef struct worker {
217	/* locked by wrklock */
218	struct worker *prev, *next;
219
220	pthread_t tid;
221
222	/* locked by reslock, reqlock or wrklock */
223	aio_req req; /* currently processed request */
224	void *dbuf;
225	DIR *dirp;
226	} worker;
227
228	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
229
230	static void worker_clear (worker *wrk)
231	{
232	if (wrk->dirp)
233	{
234	closedir (wrk->dirp);
235	wrk->dirp = 0;
236	}
237
238	if (wrk->dbuf)
239	{
240	free (wrk->dbuf);
241	wrk->dbuf = 0;
242	}
243	}
244
245	static void worker_free (worker *wrk)
246	{
247	wrk->next->prev = wrk->prev;
248	wrk->prev->next = wrk->next;
249
250	free (wrk);
251	}
252
253	static volatile unsigned int nreqs, nready, npending;
254	static volatile unsigned int max_idle = 4;
255	static volatile unsigned int max_outstanding = 0xffffffff;
256	static int respipe [2];
257
258	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
259	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
260	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
261
262	#if WORDACCESS_UNSAFE
263
264	static unsigned int get_nready ()
265	{
266	unsigned int retval;
267
268	LOCK (reqlock);
269	retval = nready;
270	UNLOCK (reqlock);
271
272	return retval;
273	}
274
275	static unsigned int get_npending ()
276	{
277	unsigned int retval;
278
279	LOCK (reslock);
280	retval = npending;
281	UNLOCK (reslock);
282
283	return retval;
284	}
285
286	static unsigned int get_nthreads ()
287	{
288	unsigned int retval;
289
290	LOCK (wrklock);
291	retval = started;
292	UNLOCK (wrklock);
293
294	return retval;
295	}
296
297	#else
298
299	# define get_nready() nready
300	# define get_npending() npending
301	# define get_nthreads() started
302
303	#endif
304
305	/*
306	* a somewhat faster data structure might be nice, but
307	* with 8 priorities this actually needs <20 insns
308	* per shift, the most expensive operation.
309	*/
310	typedef struct {
311	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
312	int size;
313	} reqq;
314
315	static reqq req_queue;
316	static reqq res_queue;
317
318	int reqq_push (reqq *q, aio_req req)
319	{
320	int pri = req->pri;
321	req->next = 0;
322
323	if (q->qe[pri])
324	{
325	q->qe[pri]->next = req;
326	q->qe[pri] = req;
327	}
328	else
329	q->qe[pri] = q->qs[pri] = req;
330
331	return q->size++;
332	}
333
334	aio_req reqq_shift (reqq *q)
335	{
336	int pri;
337
338	if (!q->size)
339	return 0;
340
341	--q->size;
342
343	for (pri = NUM_PRI; pri--; )
344	{
345	aio_req req = q->qs[pri];
346
347	if (req)
348	{
349	if (!(q->qs[pri] = req->next))
350	q->qe[pri] = 0;
351
352	return req;
353	}
354	}
355
356	abort ();
357	}
358
359	static int poll_cb ();
360	static int req_invoke (aio_req req);
361	static void req_free (aio_req req);	164	static void req_destroy (aio_req req);
362	static void req_cancel (aio_req req);	165	static void req_cancel (aio_req req);
		166
		167	static void want_poll (void)
		168	{
		169	/* write a dummy byte to the pipe so fh becomes ready */
		170	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		171	}
		172
		173	static void done_poll (void)
		174	{
		175	/* read any signals sent by the worker threads */
		176	char buf [4];
		177	while (respipe_read (respipe [0], buf, 4) == 4)
		178	;
		179	}
363		180
364	/* must be called at most once */	181	/* must be called at most once */
365	static SV *req_sv (aio_req req, const char *klass)	182	static SV *req_sv (aio_req req, const char *klass)
366	{	183	{
367	if (!req->self)	184	if (!req->self)
…		…
385	return mg ? (aio_req)mg->mg_ptr : 0;	202	return mg ? (aio_req)mg->mg_ptr : 0;
386	}	203	}
387		204
388	static void aio_grp_feed (aio_req grp)	205	static void aio_grp_feed (aio_req grp)
389	{	206	{
390	block_sig ();	207	if (grp->sv2 && SvOK (grp->sv2))
391
392	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
393	{	208	{
394	int old_len = grp->size;
395
396	if (grp->sv2 && SvOK (grp->sv2))
397	{
398	dSP;	209	dSP;
399		210
400	ENTER;	211	ENTER;
401	SAVETMPS;	212	SAVETMPS;
402	PUSHMARK (SP);	213	PUSHMARK (SP);
403	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	214	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
404	PUTBACK;	215	PUTBACK;
405	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	216	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
406	SPAGAIN;	217	SPAGAIN;
407	FREETMPS;	218	FREETMPS;
408	LEAVE;	219	LEAVE;
409	}
410
411	/* stop if no progress has been made */
412	if (old_len == grp->size)
413	{
414	SvREFCNT_dec (grp->sv2);
415	grp->sv2 = 0;
416	break;
417	}
418	}	220	}
419
420	unblock_sig ();
421	}	221	}
422		222
423	static void aio_grp_dec (aio_req grp)	223	static void req_submit (eio_req *req)
424	{	224	{
425	--grp->size;	225	eio_submit (req);
426		226
427	/* call feeder, if applicable */	227	if (expect_false (on_next_submit))
428	aio_grp_feed (grp);
429
430	/* finish, if done */
431	if (!grp->size && grp->int1)
432	{	228	{
433	block_sig ();	229	dSP;
		230	SV *cb = sv_2mortal (on_next_submit);
434		231
435	if (!req_invoke (grp))	232	on_next_submit = 0;
436	{
437	req_free (grp);
438	unblock_sig ();
439	croak (0);
440	}
441		233
442	req_free (grp);	234	PUSHMARK (SP);
443	unblock_sig ();	235	PUTBACK;
		236	call_sv (cb, G_DISCARD | G_EVAL);
444	}	237	}
445	}	238	}
446		239
447	static int req_invoke (aio_req req)	240	static int req_invoke (eio_req *req)
448	{	241	{
449	dSP;	242	dSP;
450		243
451	if (req->flags & FLAG_SV1_RO_OFF)	244	if (req->flags & FLAG_SV2_RO_OFF)
452	SvREADONLY_off (req->sv1);	245	SvREADONLY_off (req->sv2);
453		246
454	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	247	if (!EIO_CANCELLED (req) && req->callback)
455	{	248	{
456	ENTER;	249	ENTER;
457	SAVETMPS;	250	SAVETMPS;
458	PUSHMARK (SP);	251	PUSHMARK (SP);
459	EXTEND (SP, 1);	252	EXTEND (SP, 1);
460		253
461	switch (req->type)	254	switch (req->type)
462	{	255	{
463	case REQ_READDIR:	256	case EIO_READDIR:
464	{	257	{
465	SV *rv = &PL_sv_undef;	258	SV *rv = &PL_sv_undef;
466		259
467	if (req->result >= 0)	260	if (req->result >= 0)
468	{	261	{
469	int i;	262	int i;
470	char *buf = req->ptr2;	263	char *names = (char *)req->ptr2;
		264	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
471	AV *av = newAV ();	265	AV *av = newAV ();
472		266
473	av_extend (av, req->result - 1);	267	av_extend (av, req->result - 1);
474		268
475	for (i = 0; i < req->result; ++i)	269	for (i = 0; i < req->result; ++i)
476	{	270	{
477	SV *sv = newSVpv (buf, 0);	271	if (req->int1 & EIO_READDIR_DENTS)
		272	{
		273	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
478		274
		275	if (req->int1 & EIO_READDIR_CUSTOM2)
		276	{
		277	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		278	AV *avent = newAV ();
		279
		280	av_extend (avent, 2);
		281
		282	if (!sv_type [ent->type])
		283	{
		284	sv_type [ent->type] = newSViv (ent->type);
		285	SvREADONLY_on (sv_type [ent->type]);
		286	}
		287
		288	av_store (avent, 0, namesv);
		289	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		290	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		291
		292	av_store (av, i, newRV_noinc ((SV *)avent));
		293	}
		294	else
479	av_store (av, i, sv);	295	av_store (av, i, namesv);
		296
		297	++ent;
		298	}
		299	else
		300	{
		301	SV *name = newSVpv (names, 0);
		302	av_store (av, i, name);
480	buf += SvCUR (sv) + 1;	303	names += SvCUR (name) + 1;
		304	}
481	}	305	}
482		306
483	rv = sv_2mortal (newRV_noinc ((SV *)av));	307	rv = sv_2mortal (newRV_noinc ((SV *)av));
484	}	308	}
485		309
486	PUSHs (rv);	310	PUSHs (rv);
		311
		312	if (req->int1 & EIO_READDIR_CUSTOM1)
		313	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
487	}	314	}
488	break;	315	break;
489		316
490	case REQ_OPEN:	317	case EIO_OPEN:
491	{	318	{
492	/* convert fd to fh */	319	/* convert fd to fh */
493	SV *fh;	320	SV *fh = &PL_sv_undef;
494		321
495	PUSHs (sv_2mortal (newSViv (req->result)));	322	if (req->result >= 0)
496	PUTBACK;	323	{
497	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	324	GV *gv = (GV *)sv_newmortal ();
498	SPAGAIN;	325	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		326	char sym [64];
		327	int symlen;
		328
		329	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		330	gv_init (gv, stash, sym, symlen, 0);
499		331
500	fh = POPs;	332	symlen = snprintf (
501	PUSHMARK (SP);	333	sym,
		334	sizeof (sym),
		335	"%s&=%d",
		336	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		337	(int)req->result
		338	);
		339
		340	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		341	fh = (SV *)gv;
		342	}
		343
502	XPUSHs (fh);	344	PUSHs (fh);
503	}	345	}
504	break;	346	break;
505		347
506	case REQ_GROUP:	348	case EIO_GROUP:
507	req->int1 = 2; /* mark group as finished */	349	req->int1 = 2; /* mark group as finished */
508		350
509	if (req->sv1)	351	if (req->sv1)
510	{	352	{
511	int i;	353	int i;
…		…
515	for (i = 0; i <= AvFILL (av); ++i)	357	for (i = 0; i <= AvFILL (av); ++i)
516	PUSHs (*av_fetch (av, i, 0));	358	PUSHs (*av_fetch (av, i, 0));
517	}	359	}
518	break;	360	break;
519		361
520	case REQ_NOP:	362	case EIO_NOP:
521	case REQ_BUSY:	363	case EIO_BUSY:
522	break;	364	break;
523		365
524	case REQ_READLINK:	366	case EIO_READLINK:
525	if (req->result > 0)	367	if (req->result > 0)
526	{	368	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
527	SvCUR_set (req->sv1, req->result);
528	*SvEND (req->sv1) = 0;
529	PUSHs (req->sv1);
530	}
531	break;	369	break;
532		370
533	case REQ_STAT:	371	case EIO_STAT:
534	case REQ_LSTAT:	372	case EIO_LSTAT:
535	case REQ_FSTAT:	373	case EIO_FSTAT:
536	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	374	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
537	PL_laststatval = req->result;	375	PL_laststatval = req->result;
538	PL_statcache = *(Stat_t *)(req->ptr2);	376	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
539	PUSHs (sv_2mortal (newSViv (req->result)));	377	PUSHs (sv_2mortal (newSViv (req->result)));
540	break;	378	break;
541		379
542	case REQ_READ:	380	case EIO_READ:
		381	{
543	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	382	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
544	*SvEND (req->sv1) = 0;	383	*SvEND (req->sv2) = 0;
		384	SvPOK_only (req->sv2);
		385	SvSETMAGIC (req->sv2);
545	PUSHs (sv_2mortal (newSViv (req->result)));	386	PUSHs (sv_2mortal (newSViv (req->result)));
		387	}
546	break;	388	break;
		389
		390	case EIO_DUP2:
		391	if (req->result > 0)
		392	req->result = 0;
		393	/* FALLTHROUGH */
547		394
548	default:	395	default:
549	PUSHs (sv_2mortal (newSViv (req->result)));	396	PUSHs (sv_2mortal (newSViv (req->result)));
550	break;	397	break;
551	}	398	}
552		399
553	errno = req->errorno;	400	errno = req->errorno;
554		401
555	PUTBACK;	402	PUTBACK;
556	call_sv (req->callback, G_VOID | G_EVAL);	403	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
557	SPAGAIN;	404	SPAGAIN;
558		405
559	FREETMPS;	406	FREETMPS;
560	LEAVE;	407	LEAVE;
		408
		409	PUTBACK;
561	}	410	}
562		411
563	if (req->grp)
564	{
565	aio_req grp = req->grp;
566
567	/* unlink request */
568	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
569	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
570
571	if (grp->grp_first == req)
572	grp->grp_first = req->grp_next;
573
574	aio_grp_dec (grp);
575	}
576
577	return !SvTRUE (ERRSV);	412	return !!SvTRUE (ERRSV);
578	}	413	}
579		414
580	static void req_free (aio_req req)	415	static void req_destroy (aio_req req)
581	{	416	{
582	if (req->self)	417	if (req->self)
583	{	418	{
584	sv_unmagic (req->self, PERL_MAGIC_ext);	419	sv_unmagic (req->self, PERL_MAGIC_ext);
585	SvREFCNT_dec (req->self);	420	SvREFCNT_dec (req->self);
586	}	421	}
587		422
588	SvREFCNT_dec (req->fh);
589	SvREFCNT_dec (req->sv1);	423	SvREFCNT_dec (req->sv1);
590	SvREFCNT_dec (req->sv2);	424	SvREFCNT_dec (req->sv2);
591	SvREFCNT_dec (req->callback);	425	SvREFCNT_dec (req->callback);
592		426
593	if (req->flags & FLAG_PTR2_FREE)
594	free (req->ptr2);
595
596	Safefree (req);	427	Safefree (req);
597	}	428	}
598		429
599	static void req_cancel_subs (aio_req grp)	430	static void req_cancel_subs (aio_req grp)
600	{	431	{
601	aio_req sub;	432	aio_req sub;
602		433
603	if (grp->type != REQ_GROUP)	434	if (grp->type != EIO_GROUP)
604	return;	435	return;
605		436
606	SvREFCNT_dec (grp->sv2);	437	SvREFCNT_dec (grp->sv2);
607	grp->sv2 = 0;	438	grp->sv2 = 0;
608		439
609	for (sub = grp->grp_first; sub; sub = sub->grp_next)	440	eio_grp_cancel (grp);
610	req_cancel (sub);
611	}	441	}
612		442
613	static void req_cancel (aio_req req)	443	#ifdef USE_SOCKETS_AS_HANDLES
614	{	444	# define TO_SOCKET(x) (win32_get_osfhandle (x))
615	req->flags |= FLAG_CANCELLED;	445	#else
616		446	# define TO_SOCKET(x) (x)
617	req_cancel_subs (req);
618	}
619
620	static void *aio_proc(void *arg);
621
622	static void start_thread (void)
623	{
624	sigset_t fullsigset, oldsigset;
625	pthread_attr_t attr;
626
627	worker *wrk = calloc (1, sizeof (worker));
628
629	if (!wrk)
630	croak ("unable to allocate worker thread data");
631
632	pthread_attr_init (&attr);
633	pthread_attr_setstacksize (&attr, STACKSIZE);
634	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
635	#ifdef PTHREAD_SCOPE_PROCESS
636	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
637	#endif	447	#endif
638		448
639	sigfillset (&fullsigset);	449	static void
		450	create_respipe (void)
		451	{
		452	int old_readfd = respipe [0];
640		453
641	LOCK (wrklock);	454	if (respipe [1] >= 0)
642	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);	455	respipe_close (TO_SOCKET (respipe [1]));
643		456
644	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	457	#ifdef _WIN32
		458	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		459	#else
		460	if (pipe (respipe))
		461	#endif
		462	croak ("unable to initialize result pipe");
		463
		464	if (old_readfd >= 0)
645	{	465	{
646	wrk->prev = &wrk_first;	466	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
647	wrk->next = wrk_first.next;	467	croak ("unable to initialize result pipe(2)");
648	wrk_first.next->prev = wrk;	468
649	wrk_first.next = wrk;	469	respipe_close (respipe [0]);
650	++started;	470	respipe [0] = old_readfd;
651	}	471	}
652	else
653	free (wrk);
654		472
655	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);	473	#ifdef _WIN32
656	UNLOCK (wrklock);	474	int arg = 1;
657	}	475	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		476	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		477	#else
		478	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		479	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		480	#endif
		481	croak ("unable to initialize result pipe(3)");
658		482
659	static void maybe_start_thread ()	483	respipe_osf [0] = TO_SOCKET (respipe [0]);
660	{	484	respipe_osf [1] = TO_SOCKET (respipe [1]);
661	if (get_nthreads () >= wanted)
662	return;
663
664	/* todo: maybe use idle here, but might be less exact */
665	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
666	return;
667
668	start_thread ();
669	}	485	}
670		486
671	static void req_send (aio_req req)
672	{
673	block_sig ();
674
675	++nreqs;
676
677	LOCK (reqlock);
678	++nready;
679	reqq_push (&req_queue, req);
680	pthread_cond_signal (&reqwait);
681	UNLOCK (reqlock);
682
683	unblock_sig ();
684
685	maybe_start_thread ();
686	}
687
688	static void end_thread (void)
689	{
690	aio_req req;
691
692	Newz (0, req, 1, aio_cb);
693
694	req->type = REQ_QUIT;
695	req->pri = PRI_MAX + PRI_BIAS;
696
697	LOCK (reqlock);
698	reqq_push (&req_queue, req);
699	pthread_cond_signal (&reqwait);
700	UNLOCK (reqlock);
701
702	LOCK (wrklock);
703	--started;
704	UNLOCK (wrklock);
705	}
706
707	static void set_max_idle (int nthreads)
708	{
709	if (WORDACCESS_UNSAFE) LOCK (reqlock);
710	max_idle = nthreads <= 0 ? 1 : nthreads;
711	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
712	}
713
714	static void min_parallel (int nthreads)
715	{
716	if (wanted < nthreads)
717	wanted = nthreads;
718	}
719
720	static void max_parallel (int nthreads)
721	{
722	if (wanted > nthreads)
723	wanted = nthreads;
724
725	while (started > wanted)
726	end_thread ();
727	}
728
729	static void poll_wait ()	487	static void poll_wait (void)
730	{	488	{
731	fd_set rfd;	489	fd_set rfd;
732		490
733	while (nreqs)	491	while (eio_nreqs ())
734	{	492	{
735	int size;	493	int size;
736	if (WORDACCESS_UNSAFE) LOCK (reslock);	494
		495	X_LOCK (reslock);
737	size = res_queue.size;	496	size = res_queue.size;
738	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	497	X_UNLOCK (reslock);
739		498
740	if (size)	499	if (size)
741	return;	500	return;
742		501
743	maybe_start_thread ();	502	etp_maybe_start_thread ();
744		503
745	FD_ZERO(&rfd);	504	FD_ZERO (&rfd);
746	FD_SET(respipe [0], &rfd);	505	FD_SET (respipe [0], &rfd);
747		506
748	select (respipe [0] + 1, &rfd, 0, 0, 0);	507	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
749	}	508	}
750	}	509	}
751		510
752	static int poll_cb ()	511	static int poll_cb (void)
753	{	512	{
754	dSP;
755	int count = 0;
756	int maxreqs = max_poll_reqs;
757	int do_croak = 0;
758	struct timeval tv_start, tv_now;
759	aio_req req;
760
761	if (max_poll_time)
762	gettimeofday (&tv_start, 0);
763
764	block_sig ();
765
766	for (;;)	513	for (;;)
767	{	514	{
768	for (;;)	515	int res = eio_poll ();
769	{
770	maybe_start_thread ();
771		516
772	LOCK (reslock);	517	if (res > 0)
773	req = reqq_shift (&res_queue);
774
775	if (req)
776	{
777	--npending;
778
779	if (!res_queue.size)
780	{
781	/* read any signals sent by the worker threads */
782	char buf [4];
783	while (read (respipe [0], buf, 4) == 4)
784	;
785	}
786	}
787
788	UNLOCK (reslock);
789
790	if (!req)
791	break;
792
793	--nreqs;
794
795	if (req->type == REQ_GROUP && req->size)
796	{
797	req->int1 = 1; /* mark request as delayed */
798	continue;
799	}
800	else
801	{
802	if (!req_invoke (req))
803	{
804	req_free (req);
805	unblock_sig ();
806	croak (0);	518	croak (0);
807	}
808		519
809	count++;	520	if (!max_outstanding || max_outstanding > eio_nreqs ())
810	}	521	return res;
811
812	req_free (req);
813
814	if (maxreqs && !--maxreqs)
815	break;
816
817	if (max_poll_time)
818	{
819	gettimeofday (&tv_now, 0);
820
821	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
822	break;
823	}
824	}
825
826	if (nreqs <= max_outstanding)
827	break;
828		522
829	poll_wait ();	523	poll_wait ();
830
831	++maxreqs;
832	}	524	}
833
834	unblock_sig ();
835	return count;
836	}	525	}
837		526
838	static void create_pipe ()	527	static void atfork_child (void)
839	{	528	{
840	if (pipe (respipe))	529	create_respipe ();
841	croak ("unable to initialize result pipe");
842
843	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
844	croak ("cannot set result pipe to nonblocking mode");
845
846	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
847	croak ("cannot set result pipe to nonblocking mode");
848	}	530	}
849		531
850	/*****************************************************************************/	532	static SV *
851	/* work around various missing functions */	533	get_cb (SV *cb_sv)
852
853	#if !HAVE_PREADWRITE
854	# define pread aio_pread
855	# define pwrite aio_pwrite
856
857	/*
858	* make our pread/pwrite safe against themselves, but not against
859	* normal read/write by using a mutex. slows down execution a lot,
860	* but that's your problem, not mine.
861	*/
862	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
863
864	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
865	{	534	{
866	ssize_t res;	535	HV *st;
867	off_t ooffset;	536	GV *gvp;
		537	CV *cv;
868		538
869	LOCK (preadwritelock);	539	if (!SvOK (cb_sv))
870	ooffset = lseek (fd, 0, SEEK_CUR);
871	lseek (fd, offset, SEEK_SET);
872	res = read (fd, buf, count);
873	lseek (fd, ooffset, SEEK_SET);
874	UNLOCK (preadwritelock);
875
876	return res;
877	}
878
879	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
880	{
881	ssize_t res;
882	off_t ooffset;
883
884	LOCK (preadwritelock);
885	ooffset = lseek (fd, 0, SEEK_CUR);
886	lseek (fd, offset, SEEK_SET);
887	res = write (fd, buf, count);
888	lseek (fd, offset, SEEK_SET);
889	UNLOCK (preadwritelock);
890
891	return res;
892	}
893	#endif
894
895	#if !HAVE_FDATASYNC
896	# define fdatasync fsync
897	#endif
898
899	#if !HAVE_READAHEAD
900	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
901
902	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
903	{
904	dBUF;
905
906	while (count > 0)
907	{
908	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
909
910	pread (fd, aio_buf, len, offset);
911	offset += len;
912	count -= len;
913	}
914
915	errno = 0;
916	}
917
918	#endif
919
920	#if !HAVE_READDIR_R
921	# define readdir_r aio_readdir_r
922
923	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
924
925	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
926	{
927	struct dirent *e;
928	int errorno;
929
930	LOCK (readdirlock);
931
932	e = readdir (dirp);
933	errorno = errno;
934
935	if (e)
936	{
937	*res = ent;
938	strcpy (ent->d_name, e->d_name);
939	}
940	else
941	*res = 0;
942
943	UNLOCK (readdirlock);
944
945	errno = errorno;
946	return e ? 0 : -1;
947	}
948	#endif
949
950	/* sendfile always needs emulation */
951	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
952	{
953	ssize_t res;
954
955	if (!count)
956	return 0;	540	return 0;
957		541
958	#if HAVE_SENDFILE	542	cv = sv_2cv (cb_sv, &st, &gvp, 0);
959	# if __linux
960	res = sendfile (ofd, ifd, &offset, count);
961		543
962	# elif __freebsd	544	if (!cv)
963	/*	545	croak ("IO::AIO callback must be undef or a CODE reference");
964	* Of course, the freebsd sendfile is a dire hack with no thoughts
965	* wasted on making it similar to other I/O functions.
966	*/
967	{
968	off_t sbytes;
969	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
970		546
971	if (res < 0 && sbytes)	547	return (SV *)cv;
972	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
973	res = sbytes;
974	}
975
976	# elif __hpux
977	res = sendfile (ofd, ifd, offset, count, 0, 0);
978
979	# elif __solaris
980	{
981	struct sendfilevec vec;
982	size_t sbytes;
983
984	vec.sfv_fd = ifd;
985	vec.sfv_flag = 0;
986	vec.sfv_off = offset;
987	vec.sfv_len = count;
988
989	res = sendfilev (ofd, &vec, 1, &sbytes);
990
991	if (res < 0 && sbytes)
992	res = sbytes;
993	}
994
995	# endif
996	#else
997	res = -1;
998	errno = ENOSYS;
999	#endif
1000
1001	if (res < 0
1002	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1003	#if __solaris
1004	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1005	#endif
1006	)
1007	)
1008	{
1009	/* emulate sendfile. this is a major pain in the ass */
1010	dBUF;
1011
1012	res = 0;
1013
1014	while (count)
1015	{
1016	ssize_t cnt;
1017
1018	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1019
1020	if (cnt <= 0)
1021	{
1022	if (cnt && !res) res = -1;
1023	break;
1024	}
1025
1026	cnt = write (ofd, aio_buf, cnt);
1027
1028	if (cnt <= 0)
1029	{
1030	if (cnt && !res) res = -1;
1031	break;
1032	}
1033
1034	offset += cnt;
1035	res += cnt;
1036	count -= cnt;
1037	}
1038	}
1039
1040	return res;
1041	}
1042
1043	/* read a full directory */
1044	static void scandir_ (aio_req req, worker *self)
1045	{
1046	DIR *dirp;
1047	union
1048	{
1049	struct dirent d;
1050	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
1051	} *u;
1052	struct dirent *entp;
1053	char *name, *names;
1054	int memlen = 4096;
1055	int memofs = 0;
1056	int res = 0;
1057	int errorno;
1058
1059	LOCK (wrklock);
1060	self->dirp = dirp = opendir (req->ptr1);
1061	self->dbuf = u = malloc (sizeof (*u));
1062	req->flags |= FLAG_PTR2_FREE;
1063	req->ptr2 = names = malloc (memlen);
1064	UNLOCK (wrklock);
1065
1066	if (dirp && u && names)
1067	for (;;)
1068	{
1069	errno = 0;
1070	readdir_r (dirp, &u->d, &entp);
1071
1072	if (!entp)
1073	break;
1074
1075	name = entp->d_name;
1076
1077	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1078	{
1079	int len = strlen (name) + 1;
1080
1081	res++;
1082
1083	while (memofs + len > memlen)
1084	{
1085	memlen *= 2;
1086	LOCK (wrklock);
1087	req->ptr2 = names = realloc (names, memlen);
1088	UNLOCK (wrklock);
1089
1090	if (!names)
1091	break;
1092	}
1093
1094	memcpy (names + memofs, name, len);
1095	memofs += len;
1096	}
1097	}
1098
1099	if (errno)
1100	res = -1;
1101
1102	req->result = res;
1103	}
1104
1105	/*****************************************************************************/
1106
1107	static void *aio_proc (void *thr_arg)
1108	{
1109	aio_req req;
1110	struct timespec ts;
1111	worker *self = (worker *)thr_arg;
1112
1113	/* try to distribute timeouts somewhat evenly */
1114	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
1115	* (1000000000UL / 1024UL);
1116
1117	for (;;)
1118	{
1119	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1120
1121	LOCK (reqlock);
1122
1123	for (;;)
1124	{
1125	self->req = req = reqq_shift (&req_queue);
1126
1127	if (req)
1128	break;
1129
1130	++idle;
1131
1132	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
1133	== ETIMEDOUT)
1134	{
1135	if (idle > max_idle)
1136	{
1137	--idle;
1138	UNLOCK (reqlock);
1139	LOCK (wrklock);
1140	--started;
1141	UNLOCK (wrklock);
1142	goto quit;
1143	}
1144
1145	/* we are allowed to idle, so do so without any timeout */
1146	pthread_cond_wait (&reqwait, &reqlock);
1147	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1148	}
1149
1150	--idle;
1151	}
1152
1153	--nready;
1154
1155	UNLOCK (reqlock);
1156
1157	errno = 0; /* strictly unnecessary */
1158
1159	if (!(req->flags & FLAG_CANCELLED))
1160	switch (req->type)
1161	{
1162	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
1163	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
1164
1165	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1166	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1167
1168	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1169	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1170	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1171
1172	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1173	case REQ_CLOSE: req->result = close (req->int1); break;
1174	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1175	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1176	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1177	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1178	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1179	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1180	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1181	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1182
1183	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1184	case REQ_FSYNC: req->result = fsync (req->int1); break;
1185	case REQ_READDIR: scandir_ (req, self); break;
1186
1187	case REQ_BUSY:
1188	{
1189	struct timeval tv;
1190
1191	tv.tv_sec = req->int1;
1192	tv.tv_usec = req->int2;
1193
1194	req->result = select (0, 0, 0, 0, &tv);
1195	}
1196
1197	case REQ_GROUP:
1198	case REQ_NOP:
1199	break;
1200
1201	case REQ_QUIT:
1202	goto quit;
1203
1204	default:
1205	req->result = ENOSYS;
1206	break;
1207	}
1208
1209	req->errorno = errno;
1210
1211	LOCK (reslock);
1212
1213	++npending;
1214
1215	if (!reqq_push (&res_queue, req))
1216	{
1217	/* write a dummy byte to the pipe so fh becomes ready */
1218	write (respipe [1], &respipe, 1);
1219
1220	/* optionally signal the main thread asynchronously */
1221	if (main_sig)
1222	pthread_kill (main_tid, main_sig);
1223	}
1224
1225	self->req = 0;
1226	worker_clear (self);
1227
1228	UNLOCK (reslock);
1229	}
1230
1231	quit:
1232	LOCK (wrklock);
1233	worker_free (self);
1234	UNLOCK (wrklock);
1235
1236	return 0;
1237	}
1238
1239	/*****************************************************************************/
1240
1241	static void atfork_prepare (void)
1242	{
1243	LOCK (wrklock);
1244	LOCK (reqlock);
1245	LOCK (reslock);
1246	#if !HAVE_PREADWRITE
1247	LOCK (preadwritelock);
1248	#endif
1249	#if !HAVE_READDIR_R
1250	LOCK (readdirlock);
1251	#endif
1252	}
1253
1254	static void atfork_parent (void)
1255	{
1256	#if !HAVE_READDIR_R
1257	UNLOCK (readdirlock);
1258	#endif
1259	#if !HAVE_PREADWRITE
1260	UNLOCK (preadwritelock);
1261	#endif
1262	UNLOCK (reslock);
1263	UNLOCK (reqlock);
1264	UNLOCK (wrklock);
1265	}
1266
1267	static void atfork_child (void)
1268	{
1269	aio_req prv;
1270
1271	while (prv = reqq_shift (&req_queue))
1272	req_free (prv);
1273
1274	while (prv = reqq_shift (&res_queue))
1275	req_free (prv);
1276
1277	while (wrk_first.next != &wrk_first)
1278	{
1279	worker *wrk = wrk_first.next;
1280
1281	if (wrk->req)
1282	req_free (wrk->req);
1283
1284	worker_clear (wrk);
1285	worker_free (wrk);
1286	}
1287
1288	started = 0;
1289	idle = 0;
1290	nreqs = 0;
1291	nready = 0;
1292	npending = 0;
1293
1294	close (respipe [0]);
1295	close (respipe [1]);
1296	create_pipe ();
1297
1298	atfork_parent ();
1299	}	548	}
1300		549
1301	#define dREQ \	550	#define dREQ \
		551	SV *cb_cv; \
1302	aio_req req; \	552	aio_req req; \
1303	int req_pri = next_pri; \	553	int req_pri = next_pri; \
1304	next_pri = DEFAULT_PRI + PRI_BIAS; \	554	next_pri = EIO_PRI_DEFAULT; \
1305	\	555	\
1306	if (SvOK (callback) && !SvROK (callback)) \	556	cb_cv = get_cb (callback); \
1307	croak ("callback must be undef or of reference type"); \
1308	\	557	\
1309	Newz (0, req, 1, aio_cb); \	558	Newz (0, req, 1, eio_req); \
1310	if (!req) \	559	if (!req) \
1311	croak ("out of memory during aio_req allocation"); \	560	croak ("out of memory during eio_req allocation"); \
1312	\	561	\
1313	req->callback = newSVsv (callback); \	562	req->callback = SvREFCNT_inc (cb_cv); \
1314	req->pri = req_pri	563	req->pri = req_pri
1315		564
1316	#define REQ_SEND \	565	#define REQ_SEND \
		566	PUTBACK; \
1317	req_send (req); \	567	req_submit (req); \
		568	SPAGAIN; \
1318	\	569	\
1319	if (GIMME_V != G_VOID) \	570	if (GIMME_V != G_VOID) \
1320	XPUSHs (req_sv (req, AIO_REQ_KLASS));	571	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1321		572
		573	static int
		574	extract_fd (SV *fh, int wr)
		575	{
		576	int fd = PerlIO_fileno (wr ? IoOFP (sv_2io (fh)) : IoIFP (sv_2io (fh)));
		577
		578	if (fd < 0)
		579	croak ("illegal fh argument, either not an OS file or read/write mode mismatch");
		580
		581	return fd;
		582	}
		583
1322	MODULE = IO::AIO PACKAGE = IO::AIO	584	MODULE = IO::AIO PACKAGE = IO::AIO
1323		585
1324	PROTOTYPES: ENABLE	586	PROTOTYPES: ENABLE
1325		587
1326	BOOT:	588	BOOT:
1327	{	589	{
		590	static const struct {
		591	const char *name;
		592	IV iv;
		593	} *civ, const_iv[] = {
		594	# define const_iv(name, value) { # name, (IV) value },
		595	# define const_eio(name) { # name, (IV) EIO_ ## name },
		596	const_iv (EXDEV , EXDEV)
		597	const_iv (ENOSYS , ENOSYS)
		598	const_iv (O_RDONLY, O_RDONLY)
		599	const_iv (O_WRONLY, O_WRONLY)
		600	const_iv (O_CREAT , O_CREAT)
		601	const_iv (O_TRUNC , O_TRUNC)
		602	#ifndef _WIN32
		603	const_iv (S_IFIFO , S_IFIFO)
		604	#endif
		605	const_iv (FADV_NORMAL , POSIX_FADV_NORMAL)
		606	const_iv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		607	const_iv (FADV_RANDOM , POSIX_FADV_RANDOM)
		608	const_iv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		609	const_iv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		610	const_iv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		611
		612	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		613	const_eio (SYNC_FILE_RANGE_WRITE)
		614	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		615
		616	const_eio (READDIR_DENTS)
		617	const_eio (READDIR_DIRS_FIRST)
		618	const_eio (READDIR_STAT_ORDER)
		619	const_eio (READDIR_FOUND_UNKNOWN)
		620
		621	const_eio (DT_UNKNOWN)
		622	const_eio (DT_FIFO)
		623	const_eio (DT_CHR)
		624	const_eio (DT_DIR)
		625	const_eio (DT_BLK)
		626	const_eio (DT_REG)
		627	const_eio (DT_LNK)
		628	const_eio (DT_SOCK)
		629	const_eio (DT_WHT)
		630	};
		631
1328	HV *stash = gv_stashpv ("IO::AIO", 1);	632	stash = gv_stashpv ("IO::AIO", 1);
1329		633
1330	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	634	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
1331	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	635	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
1332	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1333	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1334	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1335	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1336	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1337		636
1338	create_pipe ();	637	create_respipe ();
1339	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	638
		639	if (eio_init (want_poll, done_poll) < 0)
		640	croak ("IO::AIO: unable to initialise eio library");
		641
		642	/* atfork child called in fifo order, so before eio's handler */
		643	X_THREAD_ATFORK (0, 0, atfork_child);
1340	}	644	}
1341		645
1342	void	646	void
1343	max_poll_reqs (int nreqs)	647	max_poll_reqs (int nreqs)
1344	PROTOTYPE: $	648	PROTOTYPE: $
1345	CODE:	649	CODE:
1346	max_poll_reqs = nreqs;	650	eio_set_max_poll_reqs (nreqs);
1347		651
1348	void	652	void
1349	max_poll_time (double nseconds)	653	max_poll_time (double nseconds)
1350	PROTOTYPE: $	654	PROTOTYPE: $
1351	CODE:	655	CODE:
1352	max_poll_time = nseconds * AIO_TICKS;	656	eio_set_max_poll_time (nseconds);
1353		657
1354	void	658	void
1355	min_parallel (int nthreads)	659	min_parallel (int nthreads)
1356	PROTOTYPE: $	660	PROTOTYPE: $
		661	CODE:
		662	eio_set_min_parallel (nthreads);
1357		663
1358	void	664	void
1359	max_parallel (int nthreads)	665	max_parallel (int nthreads)
1360	PROTOTYPE: $	666	PROTOTYPE: $
		667	CODE:
		668	eio_set_max_parallel (nthreads);
1361		669
1362	void	670	void
1363	max_idle (int nthreads)	671	max_idle (int nthreads)
1364	PROTOTYPE: $	672	PROTOTYPE: $
1365	CODE:	673	CODE:
1366	set_max_idle (nthreads);	674	eio_set_max_idle (nthreads);
1367		675
1368	int	676	void
1369	max_outstanding (int maxreqs)	677	max_outstanding (int maxreqs)
1370	PROTOTYPE: $	678	PROTOTYPE: $
1371	CODE:	679	CODE:
1372	RETVAL = max_outstanding;
1373	max_outstanding = maxreqs;	680	max_outstanding = maxreqs;
1374	OUTPUT:
1375	RETVAL
1376		681
1377	void	682	void
1378	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	683	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1379	SV8 * pathname
1380	int flags
1381	int mode
1382	SV * callback
1383	PROTOTYPE: $$$;$	684	PROTOTYPE: $$$;$
1384	PPCODE:	685	PPCODE:
1385	{	686	{
1386	dREQ;	687	dREQ;
1387		688
1388	req->type = REQ_OPEN;	689	req->type = EIO_OPEN;
1389	req->sv1 = newSVsv (pathname);	690	req->sv1 = newSVsv (pathname);
1390	req->ptr1 = SvPVbyte_nolen (req->sv1);	691	req->ptr1 = SvPVbyte_nolen (req->sv1);
1391	req->int1 = flags;	692	req->int1 = flags;
1392	req->mode = mode;	693	req->int2 = mode;
1393		694
1394	REQ_SEND;	695	REQ_SEND;
1395	}	696	}
1396		697
1397	void	698	void
1398	aio_close (fh,callback=&PL_sv_undef)	699	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1399	SV * fh
1400	SV * callback
1401	PROTOTYPE: $;$	700	PROTOTYPE: $;$
1402	ALIAS:	701	ALIAS:
1403	aio_close = REQ_CLOSE
1404	aio_fsync = REQ_FSYNC	702	aio_fsync = EIO_FSYNC
1405	aio_fdatasync = REQ_FDATASYNC	703	aio_fdatasync = EIO_FDATASYNC
1406	PPCODE:	704	PPCODE:
1407	{	705	{
		706	int fd = extract_fd (fh, 0);
1408	dREQ;	707	dREQ;
1409		708
1410	req->type = ix;	709	req->type = ix;
1411	req->fh = newSVsv (fh);	710	req->sv1 = newSVsv (fh);
1412	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	711	req->int1 = fd;
1413		712
1414	REQ_SEND (req);	713	REQ_SEND (req);
1415	}	714	}
1416		715
1417	void	716	void
		717	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		718	PROTOTYPE: $$$$;$
		719	PPCODE:
		720	{
		721	int fd = extract_fd (fh, 0);
		722	dREQ;
		723
		724	req->type = EIO_SYNC_FILE_RANGE;
		725	req->sv1 = newSVsv (fh);
		726	req->int1 = fd;
		727	req->offs = offset;
		728	req->size = nbytes;
		729	req->int2 = flags;
		730
		731	REQ_SEND (req);
		732	}
		733
		734	void
		735	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		736	PROTOTYPE: $;$
		737	PPCODE:
		738	{
		739	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		740	int fd = extract_fd (fh, 0);
		741	dREQ;
		742
		743	if (close_pipe < 0)
		744	{
		745	int pipefd [2];
		746
		747	if (pipe (pipefd) < 0
		748	|| close (pipefd [1]) < 0
		749	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		750	abort (); /*D*/
		751
		752	close_pipe = pipefd [0];
		753	}
		754
		755	req->type = EIO_DUP2;
		756	req->int1 = close_pipe;
		757	req->sv2 = newSVsv (fh);
		758	req->int2 = fd;
		759
		760	REQ_SEND (req);
		761	}
		762
		763	void
1418	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	764	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1419	SV * fh
1420	UV offset
1421	UV length
1422	SV8 * data
1423	UV dataoffset
1424	SV * callback
1425	ALIAS:	765	ALIAS:
1426	aio_read = REQ_READ	766	aio_read = EIO_READ
1427	aio_write = REQ_WRITE	767	aio_write = EIO_WRITE
1428	PROTOTYPE: $$$$$;$	768	PROTOTYPE: $$$$$;$
1429	PPCODE:	769	PPCODE:
1430	{	770	{
1431	STRLEN svlen;	771	STRLEN svlen;
		772	int fd = extract_fd (fh, ix == EIO_WRITE);
1432	char *svptr = SvPVbyte (data, svlen);	773	char *svptr = SvPVbyte (data, svlen);
1433		774	UV len = SvUV (length);
1434	SvUPGRADE (data, SVt_PV);
1435	SvPOK_on (data);
1436		775
1437	if (dataoffset < 0)	776	if (dataoffset < 0)
1438	dataoffset += svlen;	777	dataoffset += svlen;
1439		778
1440	if (dataoffset < 0 || dataoffset > svlen)	779	if (dataoffset < 0 || dataoffset > svlen)
1441	croak ("data offset outside of string");	780	croak ("dataoffset outside of data scalar");
1442		781
1443	if (ix == REQ_WRITE)	782	if (ix == EIO_WRITE)
1444	{	783	{
1445	/* write: check length and adjust. */	784	/* write: check length and adjust. */
1446	if (length < 0 || length + dataoffset > svlen)	785	if (!SvOK (length) || len + dataoffset > svlen)
1447	length = svlen - dataoffset;	786	len = svlen - dataoffset;
1448	}	787	}
1449	else	788	else
1450	{	789	{
1451	/* read: grow scalar as necessary */	790	/* read: check type and grow scalar as necessary */
		791	SvUPGRADE (data, SVt_PV);
1452	svptr = SvGROW (data, length + dataoffset + 1);	792	svptr = SvGROW (data, len + dataoffset + 1);
1453	}	793	}
1454
1455	if (length < 0)
1456	croak ("length must not be negative");
1457		794
1458	{	795	{
1459	dREQ;	796	dREQ;
1460		797
1461	req->type = ix;	798	req->type = ix;
1462	req->fh = newSVsv (fh);	799	req->sv1 = newSVsv (fh);
1463	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	800	req->int1 = fd;
1464	: IoOFP (sv_2io (fh)));	801	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1465	req->offs = offset;
1466	req->size = length;	802	req->size = len;
1467	req->sv1 = SvREFCNT_inc (data);	803	req->sv2 = SvREFCNT_inc (data);
1468	req->ptr1 = (char *)svptr + dataoffset;	804	req->ptr2 = (char *)svptr + dataoffset;
1469	req->stroffset = dataoffset;	805	req->stroffset = dataoffset;
1470		806
1471	if (!SvREADONLY (data))	807	if (!SvREADONLY (data))
1472	{	808	{
1473	SvREADONLY_on (data);	809	SvREADONLY_on (data);
1474	req->flags |= FLAG_SV1_RO_OFF;	810	req->flags |= FLAG_SV2_RO_OFF;
1475	}	811	}
1476		812
1477	REQ_SEND;	813	REQ_SEND;
1478	}	814	}
1479	}	815	}
1480		816
1481	void	817	void
1482	aio_readlink (path,callback=&PL_sv_undef)	818	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1483	SV8 * path
1484	SV * callback
1485	PROTOTYPE: $$;$	819	PROTOTYPE: $$;$
1486	PPCODE:	820	PPCODE:
1487	{	821	{
1488	SV *data;	822	SV *data;
1489	dREQ;	823	dREQ;
1490		824
1491	data = newSV (NAME_MAX);
1492	SvPOK_on (data);
1493
1494	req->type = REQ_READLINK;	825	req->type = EIO_READLINK;
1495	req->fh = newSVsv (path);	826	req->sv1 = newSVsv (path);
1496	req->ptr2 = SvPVbyte_nolen (req->fh);	827	req->ptr1 = SvPVbyte_nolen (req->sv1);
1497	req->sv1 = data;
1498	req->ptr1 = SvPVbyte_nolen (data);
1499		828
1500	REQ_SEND;	829	REQ_SEND;
1501	}	830	}
1502		831
1503	void	832	void
1504	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	833	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
1505	SV * out_fh
1506	SV * in_fh
1507	UV in_offset
1508	UV length
1509	SV * callback
1510	PROTOTYPE: $$$$;$	834	PROTOTYPE: $$$$;$
1511	PPCODE:	835	PPCODE:
1512	{	836	{
		837	int ifd = extract_fd (in_fh , 0);
		838	int ofd = extract_fd (out_fh, 0);
1513	dREQ;	839	dREQ;
1514		840
1515	req->type = REQ_SENDFILE;	841	req->type = EIO_SENDFILE;
1516	req->fh = newSVsv (out_fh);	842	req->sv1 = newSVsv (out_fh);
1517	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	843	req->int1 = ofd;
1518	req->sv2 = newSVsv (in_fh);	844	req->sv2 = newSVsv (in_fh);
1519	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	845	req->int2 = ifd;
1520	req->offs = in_offset;	846	req->offs = in_offset;
1521	req->size = length;	847	req->size = length;
1522		848
1523	REQ_SEND;	849	REQ_SEND;
1524	}	850	}
1525		851
1526	void	852	void
1527	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	853	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
1528	SV * fh
1529	UV offset
1530	IV length
1531	SV * callback
1532	PROTOTYPE: $$$;$	854	PROTOTYPE: $$$;$
1533	PPCODE:	855	PPCODE:
1534	{	856	{
		857	int fd = extract_fd (fh, 0);
1535	dREQ;	858	dREQ;
1536		859
1537	req->type = REQ_READAHEAD;	860	req->type = EIO_READAHEAD;
1538	req->fh = newSVsv (fh);	861	req->sv1 = newSVsv (fh);
1539	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	862	req->int1 = fd;
1540	req->offs = offset;	863	req->offs = offset;
1541	req->size = length;	864	req->size = length;
1542		865
1543	REQ_SEND;	866	REQ_SEND;
1544	}	867	}
1545		868
1546	void	869	void
1547	aio_stat (fh_or_path,callback=&PL_sv_undef)	870	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1548	SV8 * fh_or_path
1549	SV * callback
1550	ALIAS:	871	ALIAS:
1551	aio_stat = REQ_STAT	872	aio_stat = EIO_STAT
1552	aio_lstat = REQ_LSTAT	873	aio_lstat = EIO_LSTAT
1553	PPCODE:	874	PPCODE:
1554	{	875	{
1555	dREQ;	876	dREQ;
1556		877
1557	req->ptr2 = malloc (sizeof (Stat_t));	878	req->sv1 = newSVsv (fh_or_path);
1558	if (!req->ptr2)
1559	{
1560	req_free (req);
1561	croak ("out of memory during aio_stat statdata allocation");
1562	}
1563		879
1564	req->flags |= FLAG_PTR2_FREE;	880	if (SvPOK (req->sv1))
1565
1566	if (SvPOK (fh_or_path))
1567	{	881	{
1568	req->type = ix;	882	req->type = ix;
1569	req->sv1 = newSVsv (fh_or_path);
1570	req->ptr1 = SvPVbyte_nolen (req->sv1);	883	req->ptr1 = SvPVbyte_nolen (req->sv1);
1571	}	884	}
1572	else	885	else
1573	{	886	{
1574	req->type = REQ_FSTAT;	887	req->type = EIO_FSTAT;
1575	req->fh = newSVsv (fh_or_path);
1576	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	888	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1577	}	889	}
1578		890
1579	REQ_SEND;	891	REQ_SEND;
1580	}	892	}
1581		893
1582	void	894	void
		895	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		896	PPCODE:
		897	{
		898	dREQ;
		899
		900	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		901	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		902	req->sv1 = newSVsv (fh_or_path);
		903
		904	if (SvPOK (req->sv1))
		905	{
		906	req->type = EIO_UTIME;
		907	req->ptr1 = SvPVbyte_nolen (req->sv1);
		908	}
		909	else
		910	{
		911	req->type = EIO_FUTIME;
		912	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		913	}
		914
		915	REQ_SEND;
		916	}
		917
		918	void
		919	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		920	PPCODE:
		921	{
		922	dREQ;
		923
		924	req->sv1 = newSVsv (fh_or_path);
		925	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		926
		927	if (SvPOK (req->sv1))
		928	{
		929	req->type = EIO_TRUNCATE;
		930	req->ptr1 = SvPVbyte_nolen (req->sv1);
		931	}
		932	else
		933	{
		934	req->type = EIO_FTRUNCATE;
		935	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		936	}
		937
		938	REQ_SEND;
		939	}
		940
		941	void
		942	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		943	ALIAS:
		944	aio_chmod = EIO_CHMOD
		945	aio_mkdir = EIO_MKDIR
		946	PPCODE:
		947	{
		948	dREQ;
		949
		950	req->int2 = mode;
		951	req->sv1 = newSVsv (fh_or_path);
		952
		953	if (SvPOK (req->sv1))
		954	{
		955	req->type = ix;
		956	req->ptr1 = SvPVbyte_nolen (req->sv1);
		957	}
		958	else
		959	{
		960	req->type = EIO_FCHMOD;
		961	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		962	}
		963
		964	REQ_SEND;
		965	}
		966
		967	void
		968	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		969	PPCODE:
		970	{
		971	dREQ;
		972
		973	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		974	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		975	req->sv1 = newSVsv (fh_or_path);
		976
		977	if (SvPOK (req->sv1))
		978	{
		979	req->type = EIO_CHOWN;
		980	req->ptr1 = SvPVbyte_nolen (req->sv1);
		981	}
		982	else
		983	{
		984	req->type = EIO_FCHOWN;
		985	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		986	}
		987
		988	REQ_SEND;
		989	}
		990
		991	void
		992	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		993	PPCODE:
		994	{
		995	dREQ;
		996
		997	req->type = EIO_READDIR;
		998	req->sv1 = newSVsv (pathname);
		999	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1000	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1001
		1002	if (flags & EIO_READDIR_DENTS)
		1003	req->int1 |= EIO_READDIR_CUSTOM2;
		1004
		1005	REQ_SEND;
		1006	}
		1007
		1008	void
1583	aio_unlink (pathname,callback=&PL_sv_undef)	1009	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1584	SV8 * pathname
1585	SV * callback
1586	ALIAS:	1010	ALIAS:
1587	aio_unlink = REQ_UNLINK	1011	aio_unlink = EIO_UNLINK
1588	aio_rmdir = REQ_RMDIR	1012	aio_rmdir = EIO_RMDIR
1589	aio_readdir = REQ_READDIR	1013	aio_readdir = EIO_READDIR
1590	PPCODE:	1014	PPCODE:
1591	{	1015	{
1592	dREQ;	1016	dREQ;
1593		1017
1594	req->type = ix;	1018	req->type = ix;
…		…
1597		1021
1598	REQ_SEND;	1022	REQ_SEND;
1599	}	1023	}
1600		1024
1601	void	1025	void
1602	aio_mkdir (pathname,mode,callback=&PL_sv_undef)
1603	SV8 * pathname
1604	UV mode
1605	SV * callback
1606	PPCODE:
1607	{
1608	dREQ;
1609
1610	req->type = REQ_MKDIR;
1611	req->sv1 = newSVsv (pathname);
1612	req->ptr1 = SvPVbyte_nolen (req->sv1);
1613	req->mode = mode;
1614
1615	REQ_SEND;
1616	}
1617
1618	void
1619	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1026	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1620	SV8 * oldpath
1621	SV8 * newpath
1622	SV * callback
1623	ALIAS:	1027	ALIAS:
1624	aio_link = REQ_LINK	1028	aio_link = EIO_LINK
1625	aio_symlink = REQ_SYMLINK	1029	aio_symlink = EIO_SYMLINK
1626	aio_rename = REQ_RENAME	1030	aio_rename = EIO_RENAME
1627	PPCODE:	1031	PPCODE:
1628	{	1032	{
1629	dREQ;	1033	dREQ;
1630		1034
1631	req->type = ix;	1035	req->type = ix;
1632	req->fh = newSVsv (oldpath);	1036	req->sv1 = newSVsv (oldpath);
1633	req->ptr2 = SvPVbyte_nolen (req->fh);
1634	req->sv1 = newSVsv (newpath);
1635	req->ptr1 = SvPVbyte_nolen (req->sv1);	1037	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1038	req->sv2 = newSVsv (newpath);
		1039	req->ptr2 = SvPVbyte_nolen (req->sv2);
1636		1040
1637	REQ_SEND;	1041	REQ_SEND;
1638	}	1042	}
1639		1043
1640	void	1044	void
1641	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1045	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1642	SV8 * pathname
1643	UV mode
1644	UV dev
1645	SV * callback
1646	PPCODE:	1046	PPCODE:
1647	{	1047	{
1648	dREQ;	1048	dREQ;
1649		1049
1650	req->type = REQ_MKNOD;	1050	req->type = EIO_MKNOD;
1651	req->sv1 = newSVsv (pathname);	1051	req->sv1 = newSVsv (pathname);
1652	req->ptr1 = SvPVbyte_nolen (req->sv1);	1052	req->ptr1 = SvPVbyte_nolen (req->sv1);
1653	req->mode = (mode_t)mode;	1053	req->int2 = (mode_t)mode;
1654	req->offs = dev;	1054	req->offs = dev;
1655		1055
1656	REQ_SEND;	1056	REQ_SEND;
1657	}	1057	}
1658		1058
1659	void	1059	void
1660	aio_busy (delay,callback=&PL_sv_undef)	1060	aio_busy (double delay, SV *callback=&PL_sv_undef)
1661	double delay
1662	SV * callback
1663	PPCODE:	1061	PPCODE:
1664	{	1062	{
1665	dREQ;	1063	dREQ;
1666		1064
1667	req->type = REQ_BUSY;	1065	req->type = EIO_BUSY;
1668	req->int1 = delay < 0. ? 0 : delay;	1066	req->nv1 = delay < 0. ? 0. : delay;
1669	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1670		1067
1671	REQ_SEND;	1068	REQ_SEND;
1672	}	1069	}
1673		1070
1674	void	1071	void
1675	aio_group (callback=&PL_sv_undef)	1072	aio_group (SV *callback=&PL_sv_undef)
1676	SV * callback
1677	PROTOTYPE: ;$	1073	PROTOTYPE: ;$
1678	PPCODE:	1074	PPCODE:
1679	{	1075	{
1680	dREQ;	1076	dREQ;
1681		1077
1682	req->type = REQ_GROUP;	1078	req->type = EIO_GROUP;
1683		1079
1684	req_send (req);	1080	req_submit (req);
1685	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1081	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1686	}	1082	}
1687		1083
1688	void	1084	void
1689	aio_nop (callback=&PL_sv_undef)	1085	aio_nop (SV *callback=&PL_sv_undef)
1690	SV * callback	1086	ALIAS:
		1087	aio_nop = EIO_NOP
		1088	aio_sync = EIO_SYNC
1691	PPCODE:	1089	PPCODE:
1692	{	1090	{
1693	dREQ;	1091	dREQ;
1694		1092
1695	req->type = REQ_NOP;	1093	req->type = ix;
1696		1094
1697	REQ_SEND;	1095	REQ_SEND;
1698	}	1096	}
1699		1097
1700	int	1098	int
1701	aioreq_pri (int pri = 0)	1099	aioreq_pri (int pri = 0)
1702	PROTOTYPE: ;$	1100	PROTOTYPE: ;$
1703	CODE:	1101	CODE:
1704	RETVAL = next_pri - PRI_BIAS;	1102	RETVAL = next_pri;
1705	if (items > 0)	1103	if (items > 0)
1706	{	1104	{
1707	if (pri < PRI_MIN) pri = PRI_MIN;	1105	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1708	if (pri > PRI_MAX) pri = PRI_MAX;	1106	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1709	next_pri = pri + PRI_BIAS;	1107	next_pri = pri;
1710	}	1108	}
1711	OUTPUT:	1109	OUTPUT:
1712	RETVAL	1110	RETVAL
1713		1111
1714	void	1112	void
1715	aioreq_nice (int nice = 0)	1113	aioreq_nice (int nice = 0)
1716	CODE:	1114	CODE:
1717	nice = next_pri - nice;	1115	nice = next_pri - nice;
1718	if (nice < PRI_MIN) nice = PRI_MIN;	1116	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1719	if (nice > PRI_MAX) nice = PRI_MAX;	1117	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1720	next_pri = nice + PRI_BIAS;	1118	next_pri = nice;
1721		1119
1722	void	1120	void
1723	flush ()	1121	flush ()
1724	PROTOTYPE:	1122	PROTOTYPE:
1725	CODE:	1123	CODE:
1726	while (nreqs)	1124	while (eio_nreqs ())
1727	{	1125	{
1728	poll_wait ();	1126	poll_wait ();
1729	poll_cb ();	1127	poll_cb ();
1730	}	1128	}
1731		1129
…		…
1758	poll_wait()	1156	poll_wait()
1759	PROTOTYPE:	1157	PROTOTYPE:
1760	CODE:	1158	CODE:
1761	poll_wait ();	1159	poll_wait ();
1762		1160
1763	void
1764	setsig (int signum = SIGIO)
1765	PROTOTYPE: ;$
1766	CODE:
1767	{
1768	if (block_sig_level)
1769	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1770
1771	LOCK (reslock);
1772	main_tid = pthread_self ();
1773	main_sig = signum;
1774	UNLOCK (reslock);
1775
1776	if (main_sig && npending)
1777	pthread_kill (main_tid, main_sig);
1778	}
1779
1780	void
1781	aio_block (SV *cb)
1782	PROTOTYPE: &
1783	PPCODE:
1784	{
1785	int count;
1786
1787	block_sig ();
1788	PUSHMARK (SP);
1789	PUTBACK;
1790	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1791	SPAGAIN;
1792	unblock_sig ();
1793
1794	if (SvTRUE (ERRSV))
1795	croak (0);
1796
1797	XSRETURN (count);
1798	}
1799
1800	int	1161	int
1801	nreqs()	1162	nreqs()
1802	PROTOTYPE:	1163	PROTOTYPE:
1803	CODE:	1164	CODE:
1804	RETVAL = nreqs;	1165	RETVAL = eio_nreqs ();
1805	OUTPUT:	1166	OUTPUT:
1806	RETVAL	1167	RETVAL
1807		1168
1808	int	1169	int
1809	nready()	1170	nready()
1810	PROTOTYPE:	1171	PROTOTYPE:
1811	CODE:	1172	CODE:
1812	RETVAL = get_nready ();	1173	RETVAL = eio_nready ();
1813	OUTPUT:	1174	OUTPUT:
1814	RETVAL	1175	RETVAL
1815		1176
1816	int	1177	int
1817	npending()	1178	npending()
1818	PROTOTYPE:	1179	PROTOTYPE:
1819	CODE:	1180	CODE:
1820	RETVAL = get_npending ();	1181	RETVAL = eio_npending ();
1821	OUTPUT:	1182	OUTPUT:
1822	RETVAL	1183	RETVAL
1823		1184
1824	int	1185	int
1825	nthreads()	1186	nthreads()
1826	PROTOTYPE:	1187	PROTOTYPE:
1827	CODE:	1188	CODE:
1828	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1189	RETVAL = eio_nthreads ();
1829	RETVAL = started;
1830	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
1831	OUTPUT:	1190	OUTPUT:
1832	RETVAL	1191	RETVAL
1833		1192
		1193	int
		1194	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1195	PROTOTYPE: $$$$
		1196	CODE:
		1197	{
		1198	#if _XOPEN_SOURCE >= 600
		1199	RETVAL = posix_fadvise (fh, offset, length, advice);
		1200	#else
		1201	RETVAL = errno = ENOSYS;
		1202	#endif
		1203	}
		1204	OUTPUT:
		1205	RETVAL
		1206
		1207	ssize_t
		1208	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1209	PROTOTYPE: $$$$
		1210	CODE:
		1211	eio_sendfile_sync (ofh, ifh, offset, count);
		1212
		1213	void _on_next_submit (SV *cb)
		1214	CODE:
		1215	SvREFCNT_dec (on_next_submit);
		1216	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1217
1834	PROTOTYPES: DISABLE	1218	PROTOTYPES: DISABLE
1835		1219
1836	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1220	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1837		1221
1838	void	1222	void
1839	cancel (aio_req_ornot req)	1223	cancel (aio_req_ornot req)
1840	CODE:	1224	CODE:
1841	req_cancel (req);	1225	eio_cancel (req);
1842		1226
1843	void	1227	void
1844	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1228	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
1845	CODE:	1229	PPCODE:
		1230	{
		1231	if (GIMME_V != G_VOID)
		1232	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1233
		1234	if (items > 1)
		1235	{
		1236	SV *cb_cv = get_cb (callback);
		1237
1846	SvREFCNT_dec (req->callback);	1238	SvREFCNT_dec (req->callback);
1847	req->callback = newSVsv (callback);	1239	req->callback = SvREFCNT_inc (cb_cv);
		1240	}
		1241	}
1848		1242
1849	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	1243	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
1850		1244
1851	void	1245	void
1852	add (aio_req grp, ...)	1246	add (aio_req grp, ...)
1853	PPCODE:	1247	PPCODE:
1854	{	1248	{
1855	int i;	1249	int i;
1856	aio_req req;
1857
1858	if (main_sig && !block_sig_level)
1859	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
1860		1250
1861	if (grp->int1 == 2)	1251	if (grp->int1 == 2)
1862	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1252	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1863		1253
1864	for (i = 1; i < items; ++i )	1254	for (i = 1; i < items; ++i )
1865	{	1255	{
		1256	aio_req req;
		1257
1866	if (GIMME_V != G_VOID)	1258	if (GIMME_V != G_VOID)
1867	XPUSHs (sv_2mortal (newSVsv (ST (i))));	1259	XPUSHs (sv_2mortal (newSVsv (ST (i))));
1868		1260
1869	req = SvAIO_REQ (ST (i));	1261	req = SvAIO_REQ (ST (i));
1870		1262
1871	if (req)	1263	if (req)
1872	{	1264	eio_grp_add (grp, req);
1873	++grp->size;
1874	req->grp = grp;
1875
1876	req->grp_prev = 0;
1877	req->grp_next = grp->grp_first;
1878
1879	if (grp->grp_first)
1880	grp->grp_first->grp_prev = req;
1881
1882	grp->grp_first = req;
1883	}
1884	}	1265	}
1885	}	1266	}
1886		1267
1887	void	1268	void
1888	cancel_subs (aio_req_ornot req)	1269	cancel_subs (aio_req_ornot req)
…		…
1897	AV *av;	1278	AV *av;
1898		1279
1899	grp->errorno = errno;	1280	grp->errorno = errno;
1900		1281
1901	av = newAV ();	1282	av = newAV ();
		1283	av_extend (av, items - 1);
1902		1284
1903	for (i = 1; i < items; ++i )	1285	for (i = 1; i < items; ++i )
1904	av_push (av, newSVsv (ST (i)));	1286	av_push (av, newSVsv (ST (i)));
1905		1287
1906	SvREFCNT_dec (grp->sv1);	1288	SvREFCNT_dec (grp->sv1);
…		…
1913	grp->errorno = errorno;	1295	grp->errorno = errorno;
1914		1296
1915	void	1297	void
1916	limit (aio_req grp, int limit)	1298	limit (aio_req grp, int limit)
1917	CODE:	1299	CODE:
1918	grp->int2 = limit;	1300	eio_grp_limit (grp, limit);
1919	aio_grp_feed (grp);
1920		1301
1921	void	1302	void
1922	feed (aio_req grp, SV *callback=&PL_sv_undef)	1303	feed (aio_req grp, SV *callback=&PL_sv_undef)
1923	CODE:	1304	CODE:
1924	{	1305	{
1925	SvREFCNT_dec (grp->sv2);	1306	SvREFCNT_dec (grp->sv2);
1926	grp->sv2 = newSVsv (callback);	1307	grp->sv2 = newSVsv (callback);
		1308	grp->feed = aio_grp_feed;
1927		1309
1928	if (grp->int2 <= 0)	1310	if (grp->int2 <= 0)
1929	grp->int2 = 2;	1311	grp->int2 = 2;
1930		1312
1931	aio_grp_feed (grp);	1313	eio_grp_limit (grp, grp->int2);
1932	}	1314	}
1933		1315

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