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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.93 by root, Wed Nov 8 02:01:02 2006 UTC vs.
Revision 1.113 by root, Wed Apr 16 16:45:18 2008 UTC

1	/* solaris */	1	#include "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>
		10	#include <stdlib.h>
22	#include <errno.h>	11	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	12	#include <sys/types.h>
26	#include <sys/stat.h>	13	#include <sys/stat.h>
27	#include <limits.h>	14	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	15	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	16	#include <sched.h>
		17
		18	#ifdef _WIN32
		19
		20	# define SIGIO 0
		21	typedef Direntry_t X_DIRENT;
		22	#undef malloc
		23	#undef free
		24
		25	// perl overrides all those nice win32 functions
		26	# undef open
		27	# undef read
		28	# undef write
		29	# undef send
		30	# undef recv
		31	# undef stat
		32	# undef fstat
		33	# define lstat stat
		34	# undef truncate
		35	# undef ftruncate
		36	# undef open
		37	# undef close
		38	# undef unlink
		39	# undef rmdir
		40	# undef rename
		41	# undef lseek
		42
		43	# define chown(a,b,c) (errno = ENOSYS, -1)
		44	# define fchown(a,b,c) (errno = ENOSYS, -1)
		45	# define fchmod(a,b) (errno = ENOSYS, -1)
		46	# define symlink(a,b) (errno = ENOSYS, -1)
		47	# define readlink(a,b,c) (errno = ENOSYS, -1)
		48	# define mknod(a,b,c) (errno = ENOSYS, -1)
		49	# define truncate(a,b) (errno = ENOSYS, -1)
		50	# define ftruncate(fd,o) chsize ((fd), (o))
		51	# define fsync(fd) _commit (fd)
		52	# define opendir(fd) (errno = ENOSYS, 0)
		53	# define readdir(fd) (errno = ENOSYS, -1)
		54	# define closedir(fd) (errno = ENOSYS, -1)
		55	# define mkdir(a,b) mkdir (a)
		56
		57	#else
		58
		59	# include "autoconf/config.h"
		60	# include <sys/time.h>
		61	# include <sys/select.h>
		62	# include <unistd.h>
		63	# include <utime.h>
		64	# include <signal.h>
		65	typedef struct dirent X_DIRENT;
		66
		67	#endif
32		68
33	#if HAVE_SENDFILE	69	#if HAVE_SENDFILE
34	# if __linux	70	# if __linux
35	# include <sys/sendfile.h>	71	# include <sys/sendfile.h>
36	# elif __freebsd	72	# elif __freebsd
…		…
51	/* used for struct dirent, AIX doesn't provide it */	87	/* used for struct dirent, AIX doesn't provide it */
52	#ifndef NAME_MAX	88	#ifndef NAME_MAX
53	# define NAME_MAX 4096	89	# define NAME_MAX 4096
54	#endif	90	#endif
55		91
56	#ifndef PTHREAD_STACK_MIN
57	/* care for broken platforms, e.g. windows */
58	# define PTHREAD_STACK_MIN 16384
59	#endif
60
61	#if __ia64
62	# define STACKSIZE 65536
63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
64	# define STACKSIZE PTHREAD_STACK_MIN
65	#else
66	# define STACKSIZE 16384
67	#endif
68
69	/* wether word reads are potentially non-atomic.
70	* this is conservatice, likely most arches this runs
71	* on have atomic word read/writes.
72	*/
73	#ifndef WORDACCESS_UNSAFE
74	# if __i386 || __x86_64
75	# define WORDACCESS_UNSAFE 0
76	# else
77	# define WORDACCESS_UNSAFE 1
78	# endif
79	#endif
80
81	/* buffer size for various temporary buffers */	92	/* buffer size for various temporary buffers */
82	#define AIO_BUFSIZE 65536	93	#define AIO_BUFSIZE 65536
83		94
		95	/* use NV for 32 bit perls as it allows larger offsets */
		96	#if IVSIZE >= 8
		97	# define SvVAL64 SvIV
		98	#else
		99	# define SvVAL64 SvNV
		100	#endif
		101
		102	static HV *stash;
		103
84	#define dBUF \	104	#define dBUF \
85	char *aio_buf; \	105	char *aio_buf; \
86	LOCK (wrklock); \	106	X_LOCK (wrklock); \
87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
88	UNLOCK (wrklock); \	108	X_UNLOCK (wrklock); \
89	if (!aio_buf) \	109	if (!aio_buf) \
90	return -1;	110	return -1;
91		111
92	typedef SV SV8; /* byte-sv, used for argument-checking */	112	typedef SV SV8; /* byte-sv, used for argument-checking */
93		113
94	enum {	114	enum {
95	REQ_QUIT,	115	REQ_QUIT,
96	REQ_OPEN, REQ_CLOSE,	116	REQ_OPEN, REQ_CLOSE,
97	REQ_READ, REQ_WRITE, REQ_READAHEAD,	117	REQ_READ, REQ_WRITE,
98	REQ_SENDFILE,	118	REQ_READAHEAD, REQ_SENDFILE,
99	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	119	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
		120	REQ_TRUNCATE, REQ_FTRUNCATE,
		121	REQ_UTIME, REQ_FUTIME,
		122	REQ_CHMOD, REQ_FCHMOD,
		123	REQ_CHOWN, REQ_FCHOWN,
100	REQ_FSYNC, REQ_FDATASYNC,	124	REQ_SYNC, REQ_FSYNC, REQ_FDATASYNC,
101	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
102	REQ_MKNOD, REQ_READDIR,	126	REQ_MKNOD, REQ_READDIR,
103	REQ_LINK, REQ_SYMLINK, REQ_READLINK,	127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
104	REQ_GROUP, REQ_NOP,	128	REQ_GROUP, REQ_NOP,
105	REQ_BUSY,	129	REQ_BUSY,
106	};	130	};
…		…
110		134
111	typedef struct aio_cb	135	typedef struct aio_cb
112	{	136	{
113	struct aio_cb *volatile next;	137	struct aio_cb *volatile next;
114		138
115	SV *callback, *fh;	139	SV *callback;
116	SV *sv1, *sv2;	140	SV *sv1, *sv2;
117	void *ptr1, *ptr2;	141	void *ptr1, *ptr2;
118	off_t offs;	142	off_t offs;
119	size_t size;	143	size_t size;
120	ssize_t result;	144	ssize_t result;
		145	double nv1, nv2;
121		146
122	STRLEN stroffset;	147	STRLEN stroffset;
123	int type;	148	int type;
124	int int1, int2;	149	int int1, int2, int3;
125	int errorno;	150	int errorno;
126	mode_t mode; /* open */	151	mode_t mode; /* open */
127		152
128	unsigned char flags;	153	unsigned char flags;
129	unsigned char pri;	154	unsigned char pri;
…		…
132	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
133	} aio_cb;	158	} aio_cb;
134		159
135	enum {	160	enum {
136	FLAG_CANCELLED = 0x01, /* request was cancelled */	161	FLAG_CANCELLED = 0x01, /* request was cancelled */
137	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */	162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
138	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */	163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
139	};	164	};
140		165
141	typedef aio_cb *aio_req;	166	typedef aio_cb *aio_req;
142	typedef aio_cb *aio_req_ornot;	167	typedef aio_cb *aio_req_ornot;
…		…
160	{	185	{
161	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS	186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
162	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);	187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
163	}	188	}
164		189
		190	static thread_t main_tid;
		191	static int main_sig;
		192	static int block_sig_level;
		193
		194	void block_sig (void)
		195	{
		196	sigset_t ss;
		197
		198	if (block_sig_level++)
		199	return;
		200
		201	if (!main_sig)
		202	return;
		203
		204	sigemptyset (&ss);
		205	sigaddset (&ss, main_sig);
		206	pthread_sigmask (SIG_BLOCK, &ss, 0);
		207	}
		208
		209	void unblock_sig (void)
		210	{
		211	sigset_t ss;
		212
		213	if (--block_sig_level)
		214	return;
		215
		216	if (!main_sig)
		217	return;
		218
		219	sigemptyset (&ss);
		220	sigaddset (&ss, main_sig);
		221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		222	}
		223
165	static int next_pri = DEFAULT_PRI + PRI_BIAS;	224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
166		225
167	static unsigned int started, idle, wanted;	226	static unsigned int started, idle, wanted;
168		227
169	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
170	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
171	#else
172	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
173	#endif
174
175	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
176	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
177
178	/* worker threads management */	228	/* worker threads management */
179	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	229	static mutex_t wrklock = X_MUTEX_INIT;
180		230
181	typedef struct worker {	231	typedef struct worker {
182	/* locked by wrklock */	232	/* locked by wrklock */
183	struct worker *prev, *next;	233	struct worker *prev, *next;
184		234
185	pthread_t tid;	235	thread_t tid;
186		236
187	/* locked by reslock, reqlock or wrklock */	237	/* locked by reslock, reqlock or wrklock */
188	aio_req req; /* currently processed request */	238	aio_req req; /* currently processed request */
189	void *dbuf;	239	void *dbuf;
190	DIR *dirp;	240	DIR *dirp;
…		…
216	}	266	}
217		267
218	static volatile unsigned int nreqs, nready, npending;	268	static volatile unsigned int nreqs, nready, npending;
219	static volatile unsigned int max_idle = 4;	269	static volatile unsigned int max_idle = 4;
220	static volatile unsigned int max_outstanding = 0xffffffff;	270	static volatile unsigned int max_outstanding = 0xffffffff;
221	static int respipe [2];	271	static int respipe_osf [2], respipe [2] = { -1, -1 };
222		272
223	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	273	static mutex_t reslock = X_MUTEX_INIT;
224	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	274	static mutex_t reqlock = X_MUTEX_INIT;
225	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	275	static cond_t reqwait = X_COND_INIT;
226		276
227	#if WORDACCESS_UNSAFE	277	#if WORDACCESS_UNSAFE
228		278
229	static unsigned int get_nready ()	279	static unsigned int get_nready (void)
230	{	280	{
231	unsigned int retval;	281	unsigned int retval;
232		282
233	LOCK (reqlock);	283	X_LOCK (reqlock);
234	retval = nready;	284	retval = nready;
235	UNLOCK (reqlock);	285	X_UNLOCK (reqlock);
236		286
237	return retval;	287	return retval;
238	}	288	}
239		289
240	static unsigned int get_npending ()	290	static unsigned int get_npending (void)
241	{	291	{
242	unsigned int retval;	292	unsigned int retval;
243		293
244	LOCK (reslock);	294	X_LOCK (reslock);
245	retval = npending;	295	retval = npending;
246	UNLOCK (reslock);	296	X_UNLOCK (reslock);
247		297
248	return retval;	298	return retval;
249	}	299	}
250		300
251	static unsigned int get_nthreads ()	301	static unsigned int get_nthreads (void)
252	{	302	{
253	unsigned int retval;	303	unsigned int retval;
254		304
255	LOCK (wrklock);	305	X_LOCK (wrklock);
256	retval = started;	306	retval = started;
257	UNLOCK (wrklock);	307	X_UNLOCK (wrklock);
258		308
259	return retval;	309	return retval;
260	}	310	}
261		311
262	#else	312	#else
…		…
319	}	369	}
320		370
321	abort ();	371	abort ();
322	}	372	}
323		373
324	static int poll_cb ();	374	static int poll_cb (void);
325	static void req_invoke (aio_req req);	375	static int req_invoke (aio_req req);
326	static void req_free (aio_req req);	376	static void req_destroy (aio_req req);
327	static void req_cancel (aio_req req);	377	static void req_cancel (aio_req req);
328		378
329	/* must be called at most once */	379	/* must be called at most once */
330	static SV *req_sv (aio_req req, const char *klass)	380	static SV *req_sv (aio_req req, const char *klass)
331	{	381	{
…		…
350	return mg ? (aio_req)mg->mg_ptr : 0;	400	return mg ? (aio_req)mg->mg_ptr : 0;
351	}	401	}
352		402
353	static void aio_grp_feed (aio_req grp)	403	static void aio_grp_feed (aio_req grp)
354	{	404	{
		405	block_sig ();
		406
355	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
356	{	408	{
357	int old_len = grp->size;	409	int old_len = grp->size;
358		410
359	if (grp->sv2 && SvOK (grp->sv2))	411	if (grp->sv2 && SvOK (grp->sv2))
…		…
377	SvREFCNT_dec (grp->sv2);	429	SvREFCNT_dec (grp->sv2);
378	grp->sv2 = 0;	430	grp->sv2 = 0;
379	break;	431	break;
380	}	432	}
381	}	433	}
		434
		435	unblock_sig ();
382	}	436	}
383		437
384	static void aio_grp_dec (aio_req grp)	438	static void aio_grp_dec (aio_req grp)
385	{	439	{
386	--grp->size;	440	--grp->size;
…		…
389	aio_grp_feed (grp);	443	aio_grp_feed (grp);
390		444
391	/* finish, if done */	445	/* finish, if done */
392	if (!grp->size && grp->int1)	446	if (!grp->size && grp->int1)
393	{	447	{
		448	block_sig ();
		449
394	req_invoke (grp);	450	if (!req_invoke (grp))
		451	{
		452	req_destroy (grp);
		453	unblock_sig ();
		454	croak (0);
		455	}
		456
395	req_free (grp);	457	req_destroy (grp);
		458	unblock_sig ();
396	}	459	}
397	}	460	}
398		461
399	static void req_invoke (aio_req req)	462	static int req_invoke (aio_req req)
400	{	463	{
401	dSP;	464	dSP;
402		465
403	if (req->flags & FLAG_SV1_RO_OFF)	466	if (req->flags & FLAG_SV2_RO_OFF)
404	SvREADONLY_off (req->sv1);	467	SvREADONLY_off (req->sv2);
405		468
406	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
407	{	470	{
408	ENTER;	471	ENTER;
409	SAVETMPS;	472	SAVETMPS;
…		…
440	break;	503	break;
441		504
442	case REQ_OPEN:	505	case REQ_OPEN:
443	{	506	{
444	/* convert fd to fh */	507	/* convert fd to fh */
445	SV *fh;	508	SV *fh = &PL_sv_undef;
446		509
447	PUSHs (sv_2mortal (newSViv (req->result)));	510	if (req->result >= 0)
448	PUTBACK;	511	{
449	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	512	GV *gv = (GV *)sv_newmortal ();
450	SPAGAIN;	513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		514	char sym [64];
		515	int symlen;
		516
		517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		518	gv_init (gv, stash, sym, symlen, 0);
451		519
452	fh = POPs;	520	symlen = snprintf (
453	PUSHMARK (SP);	521	sym,
		522	sizeof (sym),
		523	"%s&=%d",
		524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		525	req->result
		526	);
		527
		528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		529	fh = (SV *)gv;
		530	}
		531
454	XPUSHs (fh);	532	PUSHs (fh);
455	}	533	}
456	break;	534	break;
457		535
458	case REQ_GROUP:	536	case REQ_GROUP:
459	req->int1 = 2; /* mark group as finished */	537	req->int1 = 2; /* mark group as finished */
…		…
474	break;	552	break;
475		553
476	case REQ_READLINK:	554	case REQ_READLINK:
477	if (req->result > 0)	555	if (req->result > 0)
478	{	556	{
479	SvCUR_set (req->sv1, req->result);	557	SvCUR_set (req->sv2, req->result);
480	*SvEND (req->sv1) = 0;	558	*SvEND (req->sv2) = 0;
481	PUSHs (req->sv1);	559	PUSHs (req->sv2);
482	}	560	}
483	break;	561	break;
484		562
485	case REQ_STAT:	563	case REQ_STAT:
486	case REQ_LSTAT:	564	case REQ_LSTAT:
…		…
490	PL_statcache = *(Stat_t *)(req->ptr2);	568	PL_statcache = *(Stat_t *)(req->ptr2);
491	PUSHs (sv_2mortal (newSViv (req->result)));	569	PUSHs (sv_2mortal (newSViv (req->result)));
492	break;	570	break;
493		571
494	case REQ_READ:	572	case REQ_READ:
495	SvCUR_set (req->sv1, req->stroffset + (req->result > 0 ? req->result : 0));	573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
496	*SvEND (req->sv1) = 0;	574	*SvEND (req->sv2) = 0;
497	PUSHs (sv_2mortal (newSViv (req->result)));	575	PUSHs (sv_2mortal (newSViv (req->result)));
498	break;	576	break;
499		577
500	default:	578	default:
501	PUSHs (sv_2mortal (newSViv (req->result)));	579	PUSHs (sv_2mortal (newSViv (req->result)));
…		…
503	}	581	}
504		582
505	errno = req->errorno;	583	errno = req->errorno;
506		584
507	PUTBACK;	585	PUTBACK;
508	call_sv (req->callback, G_VOID | G_EVAL);	586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
509	SPAGAIN;	587	SPAGAIN;
510		588
511	FREETMPS;	589	FREETMPS;
512	LEAVE;	590	LEAVE;
		591
		592	PUTBACK;
513	}	593	}
514		594
515	if (req->grp)	595	if (req->grp)
516	{	596	{
517	aio_req grp = req->grp;	597	aio_req grp = req->grp;
…		…
524	grp->grp_first = req->grp_next;	604	grp->grp_first = req->grp_next;
525		605
526	aio_grp_dec (grp);	606	aio_grp_dec (grp);
527	}	607	}
528		608
529	if (SvTRUE (ERRSV))	609	return !SvTRUE (ERRSV);
530	{
531	req_free (req);
532	croak (0);
533	}
534	}	610	}
535		611
536	static void req_free (aio_req req)	612	static void req_destroy (aio_req req)
537	{	613	{
538	if (req->self)	614	if (req->self)
539	{	615	{
540	sv_unmagic (req->self, PERL_MAGIC_ext);	616	sv_unmagic (req->self, PERL_MAGIC_ext);
541	SvREFCNT_dec (req->self);	617	SvREFCNT_dec (req->self);
542	}	618	}
543		619
544	SvREFCNT_dec (req->fh);
545	SvREFCNT_dec (req->sv1);	620	SvREFCNT_dec (req->sv1);
546	SvREFCNT_dec (req->sv2);	621	SvREFCNT_dec (req->sv2);
547	SvREFCNT_dec (req->callback);	622	SvREFCNT_dec (req->callback);
548		623
549	if (req->flags & FLAG_PTR2_FREE)	624	if (req->flags & FLAG_PTR2_FREE)
…		…
571	req->flags |= FLAG_CANCELLED;	646	req->flags |= FLAG_CANCELLED;
572		647
573	req_cancel_subs (req);	648	req_cancel_subs (req);
574	}	649	}
575		650
576	static void *aio_proc(void *arg);	651	#ifdef USE_SOCKETS_AS_HANDLES
		652	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		653	#else
		654	# define TO_SOCKET(x) (x)
		655	#endif
		656
		657	static void
		658	create_respipe (void)
		659	{
		660	int old_readfd = respipe [0];
		661
		662	if (respipe [1] >= 0)
		663	respipe_close (TO_SOCKET (respipe [1]));
		664
		665	#ifdef _WIN32
		666	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		667	#else
		668	if (pipe (respipe))
		669	#endif
		670	croak ("unable to initialize result pipe");
		671
		672	if (old_readfd >= 0)
		673	{
		674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		675	croak ("unable to initialize result pipe(2)");
		676
		677	respipe_close (respipe [0]);
		678	respipe [0] = old_readfd;
		679	}
		680
		681	#ifdef _WIN32
		682	int arg = 1;
		683	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		684	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		685	#else
		686	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		687	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		688	#endif
		689	croak ("unable to initialize result pipe(3)");
		690
		691	respipe_osf [0] = TO_SOCKET (respipe [0]);
		692	respipe_osf [1] = TO_SOCKET (respipe [1]);
		693	}
		694
		695	X_THREAD_PROC (aio_proc);
577		696
578	static void start_thread (void)	697	static void start_thread (void)
579	{	698	{
580	sigset_t fullsigset, oldsigset;
581	pthread_attr_t attr;
582
583	worker *wrk = calloc (1, sizeof (worker));	699	worker *wrk = calloc (1, sizeof (worker));
584		700
585	if (!wrk)	701	if (!wrk)
586	croak ("unable to allocate worker thread data");	702	croak ("unable to allocate worker thread data");
587		703
588	pthread_attr_init (&attr);
589	pthread_attr_setstacksize (&attr, STACKSIZE);
590	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
591	#ifdef PTHREAD_SCOPE_PROCESS
592	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
593	#endif
594
595	sigfillset (&fullsigset);
596
597	LOCK (wrklock);	704	X_LOCK (wrklock);
598	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
599		705
600	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
601	{	707	{
602	wrk->prev = &wrk_first;	708	wrk->prev = &wrk_first;
603	wrk->next = wrk_first.next;	709	wrk->next = wrk_first.next;
604	wrk_first.next->prev = wrk;	710	wrk_first.next->prev = wrk;
605	wrk_first.next = wrk;	711	wrk_first.next = wrk;
606	++started;	712	++started;
607	}	713	}
608	else	714	else
609	free (wrk);	715	free (wrk);
610		716
611	sigprocmask (SIG_SETMASK, &oldsigset, 0);
612	UNLOCK (wrklock);	717	X_UNLOCK (wrklock);
613	}	718	}
614		719
615	static void maybe_start_thread ()	720	static void maybe_start_thread (void)
616	{	721	{
617	if (get_nthreads () >= wanted)	722	if (get_nthreads () >= wanted)
618	return;	723	return;
619		724
620	/* todo: maybe use idle here, but might be less exact */	725	/* todo: maybe use idle here, but might be less exact */
…		…
624	start_thread ();	729	start_thread ();
625	}	730	}
626		731
627	static void req_send (aio_req req)	732	static void req_send (aio_req req)
628	{	733	{
		734	block_sig ();
		735
629	++nreqs;	736	++nreqs;
630		737
631	LOCK (reqlock);	738	X_LOCK (reqlock);
632	++nready;	739	++nready;
633	reqq_push (&req_queue, req);	740	reqq_push (&req_queue, req);
634	pthread_cond_signal (&reqwait);	741	X_COND_SIGNAL (reqwait);
635	UNLOCK (reqlock);	742	X_UNLOCK (reqlock);
		743
		744	unblock_sig ();
636		745
637	maybe_start_thread ();	746	maybe_start_thread ();
638	}	747	}
639		748
640	static void end_thread (void)	749	static void end_thread (void)
…		…
644	Newz (0, req, 1, aio_cb);	753	Newz (0, req, 1, aio_cb);
645		754
646	req->type = REQ_QUIT;	755	req->type = REQ_QUIT;
647	req->pri = PRI_MAX + PRI_BIAS;	756	req->pri = PRI_MAX + PRI_BIAS;
648		757
649	LOCK (reqlock);	758	X_LOCK (reqlock);
650	reqq_push (&req_queue, req);	759	reqq_push (&req_queue, req);
651	pthread_cond_signal (&reqwait);	760	X_COND_SIGNAL (reqwait);
652	UNLOCK (reqlock);	761	X_UNLOCK (reqlock);
653		762
654	LOCK (wrklock);	763	X_LOCK (wrklock);
655	--started;	764	--started;
656	UNLOCK (wrklock);	765	X_UNLOCK (wrklock);
657	}	766	}
658		767
659	static void set_max_idle (int nthreads)	768	static void set_max_idle (int nthreads)
660	{	769	{
661	if (WORDACCESS_UNSAFE) LOCK (reqlock);	770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
662	max_idle = nthreads <= 0 ? 1 : nthreads;	771	max_idle = nthreads <= 0 ? 1 : nthreads;
663	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);	772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
664	}	773	}
665		774
666	static void min_parallel (int nthreads)	775	static void min_parallel (int nthreads)
667	{	776	{
668	if (wanted < nthreads)	777	if (wanted < nthreads)
…		…
676		785
677	while (started > wanted)	786	while (started > wanted)
678	end_thread ();	787	end_thread ();
679	}	788	}
680		789
681	static void poll_wait ()	790	static void poll_wait (void)
682	{	791	{
683	fd_set rfd;	792	fd_set rfd;
684		793
685	while (nreqs)	794	while (nreqs)
686	{	795	{
687	int size;	796	int size;
688	if (WORDACCESS_UNSAFE) LOCK (reslock);	797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
689	size = res_queue.size;	798	size = res_queue.size;
690	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
691		800
692	if (size)	801	if (size)
693	return;	802	return;
694		803
695	maybe_start_thread ();	804	maybe_start_thread ();
696		805
697	FD_ZERO(&rfd);	806	FD_ZERO (&rfd);
698	FD_SET(respipe [0], &rfd);	807	FD_SET (respipe [0], &rfd);
699		808
700	select (respipe [0] + 1, &rfd, 0, 0, 0);	809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
701	}	810	}
702	}	811	}
703		812
704	static int poll_cb ()	813	static int poll_cb (void)
705	{	814	{
706	dSP;	815	dSP;
707	int count = 0;	816	int count = 0;
708	int maxreqs = max_poll_reqs;	817	int maxreqs = max_poll_reqs;
709	int do_croak = 0;	818	int do_croak = 0;
…		…
711	aio_req req;	820	aio_req req;
712		821
713	if (max_poll_time)	822	if (max_poll_time)
714	gettimeofday (&tv_start, 0);	823	gettimeofday (&tv_start, 0);
715		824
		825	block_sig ();
		826
716	for (;;)	827	for (;;)
717	{	828	{
718	for (;;)	829	for (;;)
719	{	830	{
720	maybe_start_thread ();	831	maybe_start_thread ();
721		832
722	LOCK (reslock);	833	X_LOCK (reslock);
723	req = reqq_shift (&res_queue);	834	req = reqq_shift (&res_queue);
724		835
725	if (req)	836	if (req)
726	{	837	{
727	--npending;	838	--npending;
728		839
729	if (!res_queue.size)	840	if (!res_queue.size)
730	{	841	{
731	/* read any signals sent by the worker threads */	842	/* read any signals sent by the worker threads */
732	char buf [32];	843	char buf [4];
733	while (read (respipe [0], buf, 32) == 32)	844	while (respipe_read (respipe [0], buf, 4) == 4)
734	;	845	;
735	}	846	}
736	}	847	}
737		848
738	UNLOCK (reslock);	849	X_UNLOCK (reslock);
739		850
740	if (!req)	851	if (!req)
741	break;	852	break;
742		853
743	--nreqs;	854	--nreqs;
…		…
747	req->int1 = 1; /* mark request as delayed */	858	req->int1 = 1; /* mark request as delayed */
748	continue;	859	continue;
749	}	860	}
750	else	861	else
751	{	862	{
752	req_invoke (req);	863	if (!req_invoke (req))
		864	{
		865	req_destroy (req);
		866	unblock_sig ();
		867	croak (0);
		868	}
753		869
754	count++;	870	count++;
755	}	871	}
756		872
757	req_free (req);	873	req_destroy (req);
758		874
759	if (maxreqs && !--maxreqs)	875	if (maxreqs && !--maxreqs)
760	break;	876	break;
761		877
762	if (max_poll_time)	878	if (max_poll_time)
…		…
774	poll_wait ();	890	poll_wait ();
775		891
776	++maxreqs;	892	++maxreqs;
777	}	893	}
778		894
		895	unblock_sig ();
779	return count;	896	return count;
780	}
781
782	static void create_pipe ()
783	{
784	if (pipe (respipe))
785	croak ("unable to initialize result pipe");
786
787	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
788	croak ("cannot set result pipe to nonblocking mode");
789
790	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
791	croak ("cannot set result pipe to nonblocking mode");
792	}	897	}
793		898
794	/*****************************************************************************/	899	/*****************************************************************************/
795	/* work around various missing functions */	900	/* work around various missing functions */
796		901
…		…
801	/*	906	/*
802	* make our pread/pwrite safe against themselves, but not against	907	* make our pread/pwrite safe against themselves, but not against
803	* normal read/write by using a mutex. slows down execution a lot,	908	* normal read/write by using a mutex. slows down execution a lot,
804	* but that's your problem, not mine.	909	* but that's your problem, not mine.
805	*/	910	*/
806	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	911	static mutex_t preadwritelock = X_MUTEX_INIT;
807		912
808	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	913	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
809	{	914	{
810	ssize_t res;	915	ssize_t res;
811	off_t ooffset;	916	off_t ooffset;
812		917
813	LOCK (preadwritelock);	918	X_LOCK (preadwritelock);
814	ooffset = lseek (fd, 0, SEEK_CUR);	919	ooffset = lseek (fd, 0, SEEK_CUR);
815	lseek (fd, offset, SEEK_SET);	920	lseek (fd, offset, SEEK_SET);
816	res = read (fd, buf, count);	921	res = read (fd, buf, count);
817	lseek (fd, ooffset, SEEK_SET);	922	lseek (fd, ooffset, SEEK_SET);
818	UNLOCK (preadwritelock);	923	X_UNLOCK (preadwritelock);
819		924
820	return res;	925	return res;
821	}	926	}
822		927
823	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	928	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
824	{	929	{
825	ssize_t res;	930	ssize_t res;
826	off_t ooffset;	931	off_t ooffset;
827		932
828	LOCK (preadwritelock);	933	X_LOCK (preadwritelock);
829	ooffset = lseek (fd, 0, SEEK_CUR);	934	ooffset = lseek (fd, 0, SEEK_CUR);
830	lseek (fd, offset, SEEK_SET);	935	lseek (fd, offset, SEEK_SET);
831	res = write (fd, buf, count);	936	res = write (fd, buf, count);
832	lseek (fd, offset, SEEK_SET);	937	lseek (fd, offset, SEEK_SET);
833	UNLOCK (preadwritelock);	938	X_UNLOCK (preadwritelock);
834		939
835	return res;	940	return res;
836	}	941	}
		942	#endif
		943
		944	#ifndef HAVE_FUTIMES
		945
		946	# define utimes(path,times) aio_utimes (path, times)
		947	# define futimes(fd,times) aio_futimes (fd, times)
		948
		949	int aio_utimes (const char *filename, const struct timeval times[2])
		950	{
		951	if (times)
		952	{
		953	struct utimbuf buf;
		954
		955	buf.actime = times[0].tv_sec;
		956	buf.modtime = times[1].tv_sec;
		957
		958	return utime (filename, &buf);
		959	}
		960	else
		961	return utime (filename, 0);
		962	}
		963
		964	int aio_futimes (int fd, const struct timeval tv[2])
		965	{
		966	errno = ENOSYS;
		967	return -1;
		968	}
		969
837	#endif	970	#endif
838		971
839	#if !HAVE_FDATASYNC	972	#if !HAVE_FDATASYNC
840	# define fdatasync fsync	973	# define fdatasync fsync
841	#endif	974	#endif
…		…
843	#if !HAVE_READAHEAD	976	#if !HAVE_READAHEAD
844	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)	977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
845		978
846	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)	979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
847	{	980	{
		981	size_t todo = count;
848	dBUF;	982	dBUF;
849		983
850	while (count > 0)	984	while (todo > 0)
851	{	985	{
852	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
853		987
854	pread (fd, aio_buf, len, offset);	988	pread (fd, aio_buf, len, offset);
855	offset += len;	989	offset += len;
856	count -= len;	990	todo -= len;
857	}	991	}
858		992
859	errno = 0;	993	errno = 0;
		994	return count;
860	}	995	}
861		996
862	#endif	997	#endif
863		998
864	#if !HAVE_READDIR_R	999	#if !HAVE_READDIR_R
865	# define readdir_r aio_readdir_r	1000	# define readdir_r aio_readdir_r
866		1001
867	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1002	static mutex_t readdirlock = X_MUTEX_INIT;
868		1003
869	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	1004	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
870	{	1005	{
871	struct dirent *e;	1006	X_DIRENT *e;
872	int errorno;	1007	int errorno;
873		1008
874	LOCK (readdirlock);	1009	X_LOCK (readdirlock);
875		1010
876	e = readdir (dirp);	1011	e = readdir (dirp);
877	errorno = errno;	1012	errorno = errno;
878		1013
879	if (e)	1014	if (e)
…		…
882	strcpy (ent->d_name, e->d_name);	1017	strcpy (ent->d_name, e->d_name);
883	}	1018	}
884	else	1019	else
885	*res = 0;	1020	*res = 0;
886		1021
887	UNLOCK (readdirlock);	1022	X_UNLOCK (readdirlock);
888		1023
889	errno = errorno;	1024	errno = errorno;
890	return e ? 0 : -1;	1025	return e ? 0 : -1;
891	}	1026	}
892	#endif	1027	#endif
…		…
988	static void scandir_ (aio_req req, worker *self)	1123	static void scandir_ (aio_req req, worker *self)
989	{	1124	{
990	DIR *dirp;	1125	DIR *dirp;
991	union	1126	union
992	{	1127	{
993	struct dirent d;	1128	X_DIRENT d;
994	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
995	} *u;	1130	} *u;
996	struct dirent *entp;	1131	X_DIRENT *entp;
997	char *name, *names;	1132	char *name, *names;
998	int memlen = 4096;	1133	int memlen = 4096;
999	int memofs = 0;	1134	int memofs = 0;
1000	int res = 0;	1135	int res = 0;
1001	int errorno;
1002		1136
1003	LOCK (wrklock);	1137	X_LOCK (wrklock);
1004	self->dirp = dirp = opendir (req->ptr1);	1138	self->dirp = dirp = opendir (req->ptr1);
1005	self->dbuf = u = malloc (sizeof (*u));	1139	self->dbuf = u = malloc (sizeof (*u));
1006	req->flags |= FLAG_PTR2_FREE;	1140	req->flags |= FLAG_PTR2_FREE;
1007	req->ptr2 = names = malloc (memlen);	1141	req->ptr2 = names = malloc (memlen);
1008	UNLOCK (wrklock);	1142	X_UNLOCK (wrklock);
1009		1143
1010	if (dirp && u && names)	1144	if (dirp && u && names)
1011	for (;;)	1145	for (;;)
1012	{	1146	{
1013	errno = 0;	1147	errno = 0;
…		…
1025	res++;	1159	res++;
1026		1160
1027	while (memofs + len > memlen)	1161	while (memofs + len > memlen)
1028	{	1162	{
1029	memlen *= 2;	1163	memlen *= 2;
1030	LOCK (wrklock);	1164	X_LOCK (wrklock);
1031	req->ptr2 = names = realloc (names, memlen);	1165	req->ptr2 = names = realloc (names, memlen);
1032	UNLOCK (wrklock);	1166	X_UNLOCK (wrklock);
1033		1167
1034	if (!names)	1168	if (!names)
1035	break;	1169	break;
1036	}	1170	}
1037		1171
…		…
1044	res = -1;	1178	res = -1;
1045		1179
1046	req->result = res;	1180	req->result = res;
1047	}	1181	}
1048		1182
		1183	static int
		1184	aio_close (int fd)
		1185	{
		1186	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		1187
		1188	X_LOCK (wrklock);
		1189
		1190	if (close_pipe < 0)
		1191	{
		1192	int pipefd [2];
		1193
		1194	if (pipe (pipefd) < 0
		1195	|| close (pipefd [1]) < 0
		1196	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		1197	{
		1198	X_UNLOCK (wrklock);
		1199	return -1;
		1200	}
		1201
		1202	close_pipe = pipefd [0];
		1203	}
		1204
		1205	X_UNLOCK (wrklock);
		1206
		1207	return dup2 (close_pipe, fd) < 0 ? -1 : 0;
		1208	}
		1209
1049	/*****************************************************************************/	1210	/*****************************************************************************/
1050		1211
1051	static void *aio_proc (void *thr_arg)	1212	X_THREAD_PROC (aio_proc)
1052	{	1213	{
1053	aio_req req;	1214	aio_req req;
1054	struct timespec ts;	1215	struct timespec ts;
1055	worker *self = (worker *)thr_arg;	1216	worker *self = (worker *)thr_arg;
1056		1217
1057	/* try to distribute timeouts somewhat evenly */	1218	/* try to distribute timeouts somewhat randomly */
1058	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)	1219	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1059	* (1000000000UL / 1024UL);
1060		1220
1061	for (;;)	1221	for (;;)
1062	{	1222	{
1063	ts.tv_sec = time (0) + IDLE_TIMEOUT;	1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1064		1224
1065	LOCK (reqlock);	1225	X_LOCK (reqlock);
1066		1226
1067	for (;;)	1227	for (;;)
1068	{	1228	{
1069	self->req = req = reqq_shift (&req_queue);	1229	self->req = req = reqq_shift (&req_queue);
1070		1230
1071	if (req)	1231	if (req)
1072	break;	1232	break;
1073		1233
1074	++idle;	1234	++idle;
1075		1235
1076	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)	1236	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1077	== ETIMEDOUT)	1237	== ETIMEDOUT)
1078	{	1238	{
1079	if (idle > max_idle)	1239	if (idle > max_idle)
1080	{	1240	{
1081	--idle;	1241	--idle;
1082	UNLOCK (reqlock);	1242	X_UNLOCK (reqlock);
1083	LOCK (wrklock);	1243	X_LOCK (wrklock);
1084	--started;	1244	--started;
1085	UNLOCK (wrklock);	1245	X_UNLOCK (wrklock);
1086	goto quit;	1246	goto quit;
1087	}	1247	}
1088		1248
1089	/* we are allowed to idle, so do so without any timeout */	1249	/* we are allowed to idle, so do so without any timeout */
1090	pthread_cond_wait (&reqwait, &reqlock);	1250	X_COND_WAIT (reqwait, reqlock);
1091	ts.tv_sec = time (0) + IDLE_TIMEOUT;	1251	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1092	}	1252	}
1093		1253
1094	--idle;	1254	--idle;
1095	}	1255	}
1096		1256
1097	--nready;	1257	--nready;
1098		1258
1099	UNLOCK (reqlock);	1259	X_UNLOCK (reqlock);
1100		1260
1101	errno = 0; /* strictly unnecessary */	1261	errno = 0; /* strictly unnecessary */
1102		1262
1103	if (!(req->flags & FLAG_CANCELLED))	1263	if (!(req->flags & FLAG_CANCELLED))
1104	switch (req->type)	1264	switch (req->type)
1105	{	1265	{
1106	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;	1266	case REQ_READ: req->result = req->offs >= 0
1107	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;	1267	? pread (req->int1, req->ptr1, req->size, req->offs)
		1268	: read (req->int1, req->ptr1, req->size); break;
		1269	case REQ_WRITE: req->result = req->offs >= 0
		1270	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1271	: write (req->int1, req->ptr1, req->size); break;
1108		1272
1109	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;	1273	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1110	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;	1274	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1111		1275
1112	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;	1276	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1113	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;	1277	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1114	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;	1278	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1115		1279
		1280	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1281	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1282	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1283	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1284	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1285	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1286
1116	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;	1287	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1117	case REQ_CLOSE: req->result = close (req->int1); break;	1288	case REQ_CLOSE: req->result = aio_close (req->int1); break;
1118	case REQ_UNLINK: req->result = unlink (req->ptr1); break;	1289	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1119	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;	1290	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1291	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1120	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;	1292	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1121	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;	1293	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1122	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;	1294	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1123	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;	1295	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1124	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;	1296	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1125		1297
		1298	case REQ_SYNC: req->result = 0; sync (); break;
		1299	case REQ_FSYNC: req->result = fsync (req->int1); break;
1126	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;	1300	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1127	case REQ_FSYNC: req->result = fsync (req->int1); break;	1301
1128	case REQ_READDIR: scandir_ (req, self); break;	1302	case REQ_READDIR: scandir_ (req, self); break;
1129		1303
1130	case REQ_BUSY:	1304	case REQ_BUSY:
		1305	#ifdef _WIN32
		1306	Sleep (req->nv1 * 1000.);
		1307	#else
1131	{	1308	{
1132	struct timeval tv;	1309	struct timeval tv;
1133		1310
1134	tv.tv_sec = req->int1;	1311	tv.tv_sec = req->nv1;
1135	tv.tv_usec = req->int2;	1312	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1136		1313
1137	req->result = select (0, 0, 0, 0, &tv);	1314	req->result = select (0, 0, 0, 0, &tv);
		1315	}
		1316	#endif
		1317	break;
		1318
		1319	case REQ_UTIME:
		1320	case REQ_FUTIME:
		1321	{
		1322	struct timeval tv[2];
		1323	struct timeval *times;
		1324
		1325	if (req->nv1 != -1. || req->nv2 != -1.)
		1326	{
		1327	tv[0].tv_sec = req->nv1;
		1328	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1329	tv[1].tv_sec = req->nv2;
		1330	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1331
		1332	times = tv;
		1333	}
		1334	else
		1335	times = 0;
		1336
		1337
		1338	req->result = req->type == REQ_FUTIME
		1339	? futimes (req->int1, times)
		1340	: utimes (req->ptr1, times);
1138	}	1341	}
1139		1342
1140	case REQ_GROUP:	1343	case REQ_GROUP:
1141	case REQ_NOP:	1344	case REQ_NOP:
1142	break;	1345	break;
1143		1346
1144	case REQ_QUIT:	1347	case REQ_QUIT:
1145	goto quit;	1348	goto quit;
1146		1349
1147	default:	1350	default:
1148	req->result = ENOSYS;	1351	req->result = -1;
1149	break;	1352	break;
1150	}	1353	}
1151		1354
1152	req->errorno = errno;	1355	req->errorno = errno;
1153		1356
1154	LOCK (reslock);	1357	X_LOCK (reslock);
1155		1358
1156	++npending;	1359	++npending;
1157		1360
1158	if (!reqq_push (&res_queue, req))	1361	if (!reqq_push (&res_queue, req))
		1362	{
1159	/* write a dummy byte to the pipe so fh becomes ready */	1363	/* write a dummy byte to the pipe so fh becomes ready */
1160	write (respipe [1], &respipe, 1);	1364	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		1365
		1366	/* optionally signal the main thread asynchronously */
		1367	if (main_sig)
		1368	pthread_kill (main_tid, main_sig);
		1369	}
1161		1370
1162	self->req = 0;	1371	self->req = 0;
1163	worker_clear (self);	1372	worker_clear (self);
1164		1373
1165	UNLOCK (reslock);	1374	X_UNLOCK (reslock);
1166	}	1375	}
1167		1376
1168	quit:	1377	quit:
1169	LOCK (wrklock);	1378	X_LOCK (wrklock);
1170	worker_free (self);	1379	worker_free (self);
1171	UNLOCK (wrklock);	1380	X_UNLOCK (wrklock);
1172		1381
1173	return 0;	1382	return 0;
1174	}	1383	}
1175		1384
1176	/*****************************************************************************/	1385	/*****************************************************************************/
1177		1386
1178	static void atfork_prepare (void)	1387	static void atfork_prepare (void)
1179	{	1388	{
1180	LOCK (wrklock);	1389	X_LOCK (wrklock);
1181	LOCK (reqlock);	1390	X_LOCK (reqlock);
1182	LOCK (reslock);	1391	X_LOCK (reslock);
1183	#if !HAVE_PREADWRITE	1392	#if !HAVE_PREADWRITE
1184	LOCK (preadwritelock);	1393	X_LOCK (preadwritelock);
1185	#endif	1394	#endif
1186	#if !HAVE_READDIR_R	1395	#if !HAVE_READDIR_R
1187	LOCK (readdirlock);	1396	X_LOCK (readdirlock);
1188	#endif	1397	#endif
1189	}	1398	}
1190		1399
1191	static void atfork_parent (void)	1400	static void atfork_parent (void)
1192	{	1401	{
1193	#if !HAVE_READDIR_R	1402	#if !HAVE_READDIR_R
1194	UNLOCK (readdirlock);	1403	X_UNLOCK (readdirlock);
1195	#endif	1404	#endif
1196	#if !HAVE_PREADWRITE	1405	#if !HAVE_PREADWRITE
1197	UNLOCK (preadwritelock);	1406	X_UNLOCK (preadwritelock);
1198	#endif	1407	#endif
1199	UNLOCK (reslock);	1408	X_UNLOCK (reslock);
1200	UNLOCK (reqlock);	1409	X_UNLOCK (reqlock);
1201	UNLOCK (wrklock);	1410	X_UNLOCK (wrklock);
1202	}	1411	}
1203		1412
1204	static void atfork_child (void)	1413	static void atfork_child (void)
1205	{	1414	{
1206	aio_req prv;	1415	aio_req prv;
1207		1416
1208	while (prv = reqq_shift (&req_queue))	1417	while (prv = reqq_shift (&req_queue))
1209	req_free (prv);	1418	req_destroy (prv);
1210		1419
1211	while (prv = reqq_shift (&res_queue))	1420	while (prv = reqq_shift (&res_queue))
1212	req_free (prv);	1421	req_destroy (prv);
1213		1422
1214	while (wrk_first.next != &wrk_first)	1423	while (wrk_first.next != &wrk_first)
1215	{	1424	{
1216	worker *wrk = wrk_first.next;	1425	worker *wrk = wrk_first.next;
1217		1426
1218	if (wrk->req)	1427	if (wrk->req)
1219	req_free (wrk->req);	1428	req_destroy (wrk->req);
1220		1429
1221	worker_clear (wrk);	1430	worker_clear (wrk);
1222	worker_free (wrk);	1431	worker_free (wrk);
1223	}	1432	}
1224		1433
…		…
1226	idle = 0;	1435	idle = 0;
1227	nreqs = 0;	1436	nreqs = 0;
1228	nready = 0;	1437	nready = 0;
1229	npending = 0;	1438	npending = 0;
1230		1439
1231	close (respipe [0]);
1232	close (respipe [1]);
1233	create_pipe ();	1440	create_respipe ();
1234		1441
1235	atfork_parent ();	1442	atfork_parent ();
1236	}	1443	}
1237		1444
1238	#define dREQ \	1445	#define dREQ \
…		…
1260		1467
1261	PROTOTYPES: ENABLE	1468	PROTOTYPES: ENABLE
1262		1469
1263	BOOT:	1470	BOOT:
1264	{	1471	{
1265	HV *stash = gv_stashpv ("IO::AIO", 1);	1472	stash = gv_stashpv ("IO::AIO", 1);
1266		1473
1267	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1474	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1268	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1475	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1269	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1476	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1270	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	1477	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1271	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));	1478	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1479	#ifdef _WIN32
		1480	X_MUTEX_CHECK (wrklock);
		1481	X_MUTEX_CHECK (reslock);
		1482	X_MUTEX_CHECK (reqlock);
		1483	X_MUTEX_CHECK (reqwait);
		1484	X_MUTEX_CHECK (preadwritelock);
		1485	X_MUTEX_CHECK (readdirlock);
		1486
		1487	X_COND_CHECK (reqwait);
		1488	#else
1272	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	1489	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1490	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1491	#endif
1273		1492
1274	create_pipe ();	1493	create_respipe ();
		1494
1275	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1495	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1276	}	1496	}
1277		1497
1278	void	1498	void
1279	max_poll_reqs (int nreqs)	1499	max_poll_reqs (int nreqs)
1280	PROTOTYPE: $	1500	PROTOTYPE: $
…		…
1309	max_outstanding = maxreqs;	1529	max_outstanding = maxreqs;
1310	OUTPUT:	1530	OUTPUT:
1311	RETVAL	1531	RETVAL
1312		1532
1313	void	1533	void
1314	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1534	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1315	SV8 * pathname
1316	int flags
1317	int mode
1318	SV * callback
1319	PROTOTYPE: $$$;$	1535	PROTOTYPE: $$$;$
1320	PPCODE:	1536	PPCODE:
1321	{	1537	{
1322	dREQ;	1538	dREQ;
1323		1539
…		…
1329		1545
1330	REQ_SEND;	1546	REQ_SEND;
1331	}	1547	}
1332		1548
1333	void	1549	void
1334	aio_close (fh,callback=&PL_sv_undef)	1550	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1335	SV * fh
1336	SV * callback
1337	PROTOTYPE: $;$	1551	PROTOTYPE: $;$
1338	ALIAS:	1552	ALIAS:
1339	aio_close = REQ_CLOSE
1340	aio_fsync = REQ_FSYNC	1553	aio_fsync = REQ_FSYNC
1341	aio_fdatasync = REQ_FDATASYNC	1554	aio_fdatasync = REQ_FDATASYNC
1342	PPCODE:	1555	PPCODE:
1343	{	1556	{
1344	dREQ;	1557	dREQ;
1345		1558
1346	req->type = ix;	1559	req->type = ix;
1347	req->fh = newSVsv (fh);	1560	req->sv1 = newSVsv (fh);
1348	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1561	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1349		1562
1350	REQ_SEND (req);	1563	REQ_SEND (req);
1351	}	1564	}
1352		1565
1353	void	1566	void
		1567	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1568	PROTOTYPE: $;$
		1569	PPCODE:
		1570	{
		1571	dREQ;
		1572
		1573	req->type = REQ_CLOSE;
		1574	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		1575
		1576	REQ_SEND (req);
		1577	}
		1578
		1579	void
1354	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1580	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1355	SV * fh
1356	UV offset
1357	UV length
1358	SV8 * data
1359	UV dataoffset
1360	SV * callback
1361	ALIAS:	1581	ALIAS:
1362	aio_read = REQ_READ	1582	aio_read = REQ_READ
1363	aio_write = REQ_WRITE	1583	aio_write = REQ_WRITE
1364	PROTOTYPE: $$$$$;$	1584	PROTOTYPE: $$$$$;$
1365	PPCODE:	1585	PPCODE:
1366	{	1586	{
1367	STRLEN svlen;	1587	STRLEN svlen;
1368	char *svptr = SvPVbyte (data, svlen);	1588	char *svptr = SvPVbyte (data, svlen);
		1589	UV len = SvUV (length);
1369		1590
1370	SvUPGRADE (data, SVt_PV);	1591	SvUPGRADE (data, SVt_PV);
1371	SvPOK_on (data);	1592	SvPOK_on (data);
1372		1593
1373	if (dataoffset < 0)	1594	if (dataoffset < 0)
1374	dataoffset += svlen;	1595	dataoffset += svlen;
1375		1596
1376	if (dataoffset < 0 || dataoffset > svlen)	1597	if (dataoffset < 0 || dataoffset > svlen)
1377	croak ("data offset outside of string");	1598	croak ("dataoffset outside of data scalar");
1378		1599
1379	if (ix == REQ_WRITE)	1600	if (ix == REQ_WRITE)
1380	{	1601	{
1381	/* write: check length and adjust. */	1602	/* write: check length and adjust. */
1382	if (length < 0 || length + dataoffset > svlen)	1603	if (!SvOK (length) || len + dataoffset > svlen)
1383	length = svlen - dataoffset;	1604	len = svlen - dataoffset;
1384	}	1605	}
1385	else	1606	else
1386	{	1607	{
1387	/* read: grow scalar as necessary */	1608	/* read: grow scalar as necessary */
1388	svptr = SvGROW (data, length + dataoffset);	1609	svptr = SvGROW (data, len + dataoffset + 1);
1389	}	1610	}
1390		1611
1391	if (length < 0)	1612	if (len < 0)
1392	croak ("length must not be negative");	1613	croak ("length must not be negative");
1393		1614
1394	{	1615	{
1395	dREQ;	1616	dREQ;
1396		1617
1397	req->type = ix;	1618	req->type = ix;
1398	req->fh = newSVsv (fh);	1619	req->sv1 = newSVsv (fh);
1399	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1620	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1400	: IoOFP (sv_2io (fh)));	1621	: IoOFP (sv_2io (fh)));
1401	req->offs = offset;	1622	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1402	req->size = length;	1623	req->size = len;
1403	req->sv1 = SvREFCNT_inc (data);	1624	req->sv2 = SvREFCNT_inc (data);
1404	req->ptr1 = (char *)svptr + dataoffset;	1625	req->ptr1 = (char *)svptr + dataoffset;
1405	req->stroffset = dataoffset;	1626	req->stroffset = dataoffset;
1406		1627
1407	if (!SvREADONLY (data))	1628	if (!SvREADONLY (data))
1408	{	1629	{
1409	SvREADONLY_on (data);	1630	SvREADONLY_on (data);
1410	req->flags |= FLAG_SV1_RO_OFF;	1631	req->flags |= FLAG_SV2_RO_OFF;
1411	}	1632	}
1412		1633
1413	REQ_SEND;	1634	REQ_SEND;
1414	}	1635	}
1415	}	1636	}
1416		1637
1417	void	1638	void
1418	aio_readlink (path,callback=&PL_sv_undef)	1639	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1419	SV8 * path
1420	SV * callback
1421	PROTOTYPE: $$;$	1640	PROTOTYPE: $$;$
1422	PPCODE:	1641	PPCODE:
1423	{	1642	{
1424	SV *data;	1643	SV *data;
1425	dREQ;	1644	dREQ;
1426		1645
1427	data = newSV (NAME_MAX);	1646	data = newSV (NAME_MAX);
1428	SvPOK_on (data);	1647	SvPOK_on (data);
1429		1648
1430	req->type = REQ_READLINK;	1649	req->type = REQ_READLINK;
1431	req->fh = newSVsv (path);	1650	req->sv1 = newSVsv (path);
1432	req->ptr2 = SvPVbyte_nolen (req->fh);	1651	req->ptr2 = SvPVbyte_nolen (req->sv1);
1433	req->sv1 = data;	1652	req->sv2 = data;
1434	req->ptr1 = SvPVbyte_nolen (data);	1653	req->ptr1 = SvPVbyte_nolen (data);
1435		1654
1436	REQ_SEND;	1655	REQ_SEND;
1437	}	1656	}
1438		1657
1439	void	1658	void
1440	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1659	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1441	SV * out_fh
1442	SV * in_fh
1443	UV in_offset
1444	UV length
1445	SV * callback
1446	PROTOTYPE: $$$$;$	1660	PROTOTYPE: $$$$;$
1447	PPCODE:	1661	PPCODE:
1448	{	1662	{
1449	dREQ;	1663	dREQ;
1450		1664
1451	req->type = REQ_SENDFILE;	1665	req->type = REQ_SENDFILE;
1452	req->fh = newSVsv (out_fh);	1666	req->sv1 = newSVsv (out_fh);
1453	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1667	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1454	req->sv2 = newSVsv (in_fh);	1668	req->sv2 = newSVsv (in_fh);
1455	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1669	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1456	req->offs = in_offset;	1670	req->offs = SvVAL64 (in_offset);
1457	req->size = length;	1671	req->size = length;
1458		1672
1459	REQ_SEND;	1673	REQ_SEND;
1460	}	1674	}
1461		1675
1462	void	1676	void
1463	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1677	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1464	SV * fh
1465	UV offset
1466	IV length
1467	SV * callback
1468	PROTOTYPE: $$$;$	1678	PROTOTYPE: $$$;$
1469	PPCODE:	1679	PPCODE:
1470	{	1680	{
1471	dREQ;	1681	dREQ;
1472		1682
1473	req->type = REQ_READAHEAD;	1683	req->type = REQ_READAHEAD;
1474	req->fh = newSVsv (fh);	1684	req->sv1 = newSVsv (fh);
1475	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1685	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1476	req->offs = offset;	1686	req->offs = SvVAL64 (offset);
1477	req->size = length;	1687	req->size = length;
1478		1688
1479	REQ_SEND;	1689	REQ_SEND;
1480	}	1690	}
1481		1691
1482	void	1692	void
1483	aio_stat (fh_or_path,callback=&PL_sv_undef)	1693	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1484	SV8 * fh_or_path
1485	SV * callback
1486	ALIAS:	1694	ALIAS:
1487	aio_stat = REQ_STAT	1695	aio_stat = REQ_STAT
1488	aio_lstat = REQ_LSTAT	1696	aio_lstat = REQ_LSTAT
1489	PPCODE:	1697	PPCODE:
1490	{	1698	{
1491	dREQ;	1699	dREQ;
1492		1700
1493	req->ptr2 = malloc (sizeof (Stat_t));	1701	req->ptr2 = malloc (sizeof (Stat_t));
1494	if (!req->ptr2)	1702	if (!req->ptr2)
1495	{	1703	{
1496	req_free (req);	1704	req_destroy (req);
1497	croak ("out of memory during aio_stat statdata allocation");	1705	croak ("out of memory during aio_stat statdata allocation");
1498	}	1706	}
1499		1707
1500	req->flags |= FLAG_PTR2_FREE;	1708	req->flags |= FLAG_PTR2_FREE;
		1709	req->sv1 = newSVsv (fh_or_path);
1501		1710
1502	if (SvPOK (fh_or_path))	1711	if (SvPOK (fh_or_path))
1503	{	1712	{
1504	req->type = ix;	1713	req->type = ix;
1505	req->sv1 = newSVsv (fh_or_path);
1506	req->ptr1 = SvPVbyte_nolen (req->sv1);	1714	req->ptr1 = SvPVbyte_nolen (req->sv1);
1507	}	1715	}
1508	else	1716	else
1509	{	1717	{
1510	req->type = REQ_FSTAT;	1718	req->type = REQ_FSTAT;
1511	req->fh = newSVsv (fh_or_path);
1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1719	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1513	}	1720	}
1514		1721
1515	REQ_SEND;	1722	REQ_SEND;
1516	}	1723	}
1517		1724
1518	void	1725	void
		1726	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1727	PPCODE:
		1728	{
		1729	dREQ;
		1730
		1731	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1732	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1733	req->sv1 = newSVsv (fh_or_path);
		1734
		1735	if (SvPOK (fh_or_path))
		1736	{
		1737	req->type = REQ_UTIME;
		1738	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1739	}
		1740	else
		1741	{
		1742	req->type = REQ_FUTIME;
		1743	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1744	}
		1745
		1746	REQ_SEND;
		1747	}
		1748
		1749	void
		1750	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1751	PPCODE:
		1752	{
		1753	dREQ;
		1754
		1755	req->sv1 = newSVsv (fh_or_path);
		1756	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1757
		1758	if (SvPOK (fh_or_path))
		1759	{
		1760	req->type = REQ_TRUNCATE;
		1761	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1762	}
		1763	else
		1764	{
		1765	req->type = REQ_FTRUNCATE;
		1766	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1767	}
		1768
		1769	REQ_SEND;
		1770	}
		1771
		1772	void
		1773	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1774	PPCODE:
		1775	{
		1776	dREQ;
		1777
		1778	req->mode = mode;
		1779	req->sv1 = newSVsv (fh_or_path);
		1780
		1781	if (SvPOK (fh_or_path))
		1782	{
		1783	req->type = REQ_CHMOD;
		1784	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1785	}
		1786	else
		1787	{
		1788	req->type = REQ_FCHMOD;
		1789	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1790	}
		1791
		1792	REQ_SEND;
		1793	}
		1794
		1795	void
		1796	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1797	PPCODE:
		1798	{
		1799	dREQ;
		1800
		1801	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1802	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1803	req->sv1 = newSVsv (fh_or_path);
		1804
		1805	if (SvPOK (fh_or_path))
		1806	{
		1807	req->type = REQ_CHOWN;
		1808	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1809	}
		1810	else
		1811	{
		1812	req->type = REQ_FCHOWN;
		1813	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1814	}
		1815
		1816	REQ_SEND;
		1817	}
		1818
		1819	void
1519	aio_unlink (pathname,callback=&PL_sv_undef)	1820	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1520	SV8 * pathname
1521	SV * callback
1522	ALIAS:	1821	ALIAS:
1523	aio_unlink = REQ_UNLINK	1822	aio_unlink = REQ_UNLINK
1524	aio_rmdir = REQ_RMDIR	1823	aio_rmdir = REQ_RMDIR
1525	aio_readdir = REQ_READDIR	1824	aio_readdir = REQ_READDIR
1526	PPCODE:	1825	PPCODE:
…		…
1533		1832
1534	REQ_SEND;	1833	REQ_SEND;
1535	}	1834	}
1536		1835
1537	void	1836	void
		1837	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1838	PPCODE:
		1839	{
		1840	dREQ;
		1841
		1842	req->type = REQ_MKDIR;
		1843	req->sv1 = newSVsv (pathname);
		1844	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1845	req->mode = mode;
		1846
		1847	REQ_SEND;
		1848	}
		1849
		1850	void
1538	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1851	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1539	SV8 * oldpath
1540	SV8 * newpath
1541	SV * callback
1542	ALIAS:	1852	ALIAS:
1543	aio_link = REQ_LINK	1853	aio_link = REQ_LINK
1544	aio_symlink = REQ_SYMLINK	1854	aio_symlink = REQ_SYMLINK
1545	aio_rename = REQ_RENAME	1855	aio_rename = REQ_RENAME
1546	PPCODE:	1856	PPCODE:
1547	{	1857	{
1548	dREQ;	1858	dREQ;
1549		1859
1550	req->type = ix;	1860	req->type = ix;
1551	req->fh = newSVsv (oldpath);	1861	req->sv2 = newSVsv (oldpath);
1552	req->ptr2 = SvPVbyte_nolen (req->fh);	1862	req->ptr2 = SvPVbyte_nolen (req->sv2);
1553	req->sv1 = newSVsv (newpath);	1863	req->sv1 = newSVsv (newpath);
1554	req->ptr1 = SvPVbyte_nolen (req->sv1);	1864	req->ptr1 = SvPVbyte_nolen (req->sv1);
1555		1865
1556	REQ_SEND;	1866	REQ_SEND;
1557	}	1867	}
1558		1868
1559	void	1869	void
1560	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1870	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1561	SV8 * pathname
1562	SV * callback
1563	UV mode
1564	UV dev
1565	PPCODE:	1871	PPCODE:
1566	{	1872	{
1567	dREQ;	1873	dREQ;
1568		1874
1569	req->type = REQ_MKNOD;	1875	req->type = REQ_MKNOD;
…		…
1574		1880
1575	REQ_SEND;	1881	REQ_SEND;
1576	}	1882	}
1577		1883
1578	void	1884	void
1579	aio_busy (delay,callback=&PL_sv_undef)	1885	aio_busy (double delay, SV *callback=&PL_sv_undef)
1580	double delay
1581	SV * callback
1582	PPCODE:	1886	PPCODE:
1583	{	1887	{
1584	dREQ;	1888	dREQ;
1585		1889
1586	req->type = REQ_BUSY;	1890	req->type = REQ_BUSY;
1587	req->int1 = delay < 0. ? 0 : delay;	1891	req->nv1 = delay < 0. ? 0. : delay;
1588	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1589		1892
1590	REQ_SEND;	1893	REQ_SEND;
1591	}	1894	}
1592		1895
1593	void	1896	void
1594	aio_group (callback=&PL_sv_undef)	1897	aio_group (SV *callback=&PL_sv_undef)
1595	SV * callback
1596	PROTOTYPE: ;$	1898	PROTOTYPE: ;$
1597	PPCODE:	1899	PPCODE:
1598	{	1900	{
1599	dREQ;	1901	dREQ;
1600		1902
…		…
1603	req_send (req);	1905	req_send (req);
1604	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1906	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1605	}	1907	}
1606		1908
1607	void	1909	void
1608	aio_nop (callback=&PL_sv_undef)	1910	aio_nop (SV *callback=&PL_sv_undef)
1609	SV * callback	1911	ALIAS:
		1912	aio_nop = REQ_NOP
		1913	aio_sync = REQ_SYNC
1610	PPCODE:	1914	PPCODE:
1611	{	1915	{
1612	dREQ;	1916	dREQ;
1613		1917
1614	req->type = REQ_NOP;	1918	req->type = ix;
1615		1919
1616	REQ_SEND;	1920	REQ_SEND;
1617	}	1921	}
1618		1922
1619	int	1923	int
…		…
1677	poll_wait()	1981	poll_wait()
1678	PROTOTYPE:	1982	PROTOTYPE:
1679	CODE:	1983	CODE:
1680	poll_wait ();	1984	poll_wait ();
1681		1985
		1986	void
		1987	setsig (int signum = SIGIO)
		1988	PROTOTYPE: ;$
		1989	CODE:
		1990	{
		1991	if (block_sig_level)
		1992	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1993
		1994	X_LOCK (reslock);
		1995	main_tid = pthread_self ();
		1996	main_sig = signum;
		1997	X_UNLOCK (reslock);
		1998
		1999	if (main_sig && npending)
		2000	pthread_kill (main_tid, main_sig);
		2001	}
		2002
		2003	void
		2004	aio_block (SV *cb)
		2005	PROTOTYPE: &
		2006	PPCODE:
		2007	{
		2008	int count;
		2009
		2010	block_sig ();
		2011	PUSHMARK (SP);
		2012	PUTBACK;
		2013	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		2014	unblock_sig ();
		2015
		2016	if (SvTRUE (ERRSV))
		2017	croak (0);
		2018
		2019	XSRETURN (count);
		2020	}
		2021
1682	int	2022	int
1683	nreqs()	2023	nreqs()
1684	PROTOTYPE:	2024	PROTOTYPE:
1685	CODE:	2025	CODE:
1686	RETVAL = nreqs;	2026	RETVAL = nreqs;
…		…
1705		2045
1706	int	2046	int
1707	nthreads()	2047	nthreads()
1708	PROTOTYPE:	2048	PROTOTYPE:
1709	CODE:	2049	CODE:
1710	if (WORDACCESS_UNSAFE) LOCK (wrklock);	2050	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
1711	RETVAL = started;	2051	RETVAL = started;
1712	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);	2052	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1713	OUTPUT:	2053	OUTPUT:
1714	RETVAL	2054	RETVAL
1715		2055
1716	PROTOTYPES: DISABLE	2056	PROTOTYPES: DISABLE
1717		2057
…		…
1735	PPCODE:	2075	PPCODE:
1736	{	2076	{
1737	int i;	2077	int i;
1738	aio_req req;	2078	aio_req req;
1739		2079
		2080	if (main_sig && !block_sig_level)
		2081	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		2082
1740	if (grp->int1 == 2)	2083	if (grp->int1 == 2)
1741	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2084	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1742		2085
1743	for (i = 1; i < items; ++i )	2086	for (i = 1; i < items; ++i )
1744	{	2087	{

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