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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.86 by root, Mon Oct 30 23:30:00 2006 UTC vs.
Revision 1.114 by root, Sat Apr 26 12:00:23 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;
		111
		112	typedef SV SV8; /* byte-sv, used for argument-checking */
91		113
92	enum {	114	enum {
93	REQ_QUIT,	115	REQ_QUIT,
94	REQ_OPEN, REQ_CLOSE,	116	REQ_OPEN, REQ_CLOSE,
95	REQ_READ, REQ_WRITE, REQ_READAHEAD,	117	REQ_READ, REQ_WRITE,
96	REQ_SENDFILE,	118	REQ_READAHEAD, REQ_SENDFILE,
97	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,
98	REQ_FSYNC, REQ_FDATASYNC,	124	REQ_SYNC, REQ_FSYNC, REQ_FDATASYNC,
99	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
100	REQ_MKNOD, REQ_READDIR,	126	REQ_MKNOD, REQ_READDIR,
101	REQ_LINK, REQ_SYMLINK, REQ_READLINK,	127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
102	REQ_GROUP, REQ_NOP,	128	REQ_GROUP, REQ_NOP,
103	REQ_BUSY,	129	REQ_BUSY,
104	};	130	};
…		…
108		134
109	typedef struct aio_cb	135	typedef struct aio_cb
110	{	136	{
111	struct aio_cb *volatile next;	137	struct aio_cb *volatile next;
112		138
113	SV *callback, *fh;	139	SV *callback;
114	SV *sv1, *sv2;	140	SV *sv1, *sv2;
115	void *ptr1, *ptr2;	141	void *ptr1, *ptr2;
116	Stat_t *statdata;
117	off_t offs;	142	off_t offs;
118	size_t size;	143	size_t size;
119	ssize_t result;	144	ssize_t result;
		145	double nv1, nv2;
120		146
121	STRLEN stroffset;	147	STRLEN stroffset;
122	int type;	148	int type;
123	int int1, int2;	149	int int1, int2, int3;
124	int errorno;	150	int errorno;
125	mode_t mode; /* open */	151	mode_t mode; /* open */
126		152
127	unsigned char flags;	153	unsigned char flags;
128	unsigned char pri;	154	unsigned char pri;
…		…
130	SV *self; /* the perl counterpart of this request, if any */	156	SV *self; /* the perl counterpart of this request, if any */
131	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
132	} aio_cb;	158	} aio_cb;
133		159
134	enum {	160	enum {
135	FLAG_CANCELLED = 0x01,	161	FLAG_CANCELLED = 0x01, /* request was cancelled */
136	FLAG_DATA_RO_OFF = 0x80, /* data was set readonly */	162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
137	};	164	};
138		165
139	typedef aio_cb *aio_req;	166	typedef aio_cb *aio_req;
140	typedef aio_cb *aio_req_ornot;	167	typedef aio_cb *aio_req_ornot;
141		168
…		…
158	{	185	{
159	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS	186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
160	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);	187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
161	}	188	}
162		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
163	static int next_pri = DEFAULT_PRI + PRI_BIAS;	224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
164		225
165	static unsigned int started, idle, wanted;	226	static unsigned int started, idle, wanted;
166		227
167	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
168	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
169	#else
170	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
171	#endif
172
173	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
174	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
175
176	/* worker threads management */	228	/* worker threads management */
177	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	229	static mutex_t wrklock = X_MUTEX_INIT;
178		230
179	typedef struct worker {	231	typedef struct worker {
180	/* locked by wrklock */	232	/* locked by wrklock */
181	struct worker *prev, *next;	233	struct worker *prev, *next;
182		234
183	pthread_t tid;	235	thread_t tid;
184		236
185	/* locked by reslock, reqlock or wrklock */	237	/* locked by reslock, reqlock or wrklock */
186	aio_req req; /* currently processed request */	238	aio_req req; /* currently processed request */
187	void *dbuf;	239	void *dbuf;
188	DIR *dirp;	240	DIR *dirp;
…		…
214	}	266	}
215		267
216	static volatile unsigned int nreqs, nready, npending;	268	static volatile unsigned int nreqs, nready, npending;
217	static volatile unsigned int max_idle = 4;	269	static volatile unsigned int max_idle = 4;
218	static volatile unsigned int max_outstanding = 0xffffffff;	270	static volatile unsigned int max_outstanding = 0xffffffff;
219	static int respipe [2];	271	static int respipe_osf [2], respipe [2] = { -1, -1 };
220		272
221	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	273	static mutex_t reslock = X_MUTEX_INIT;
222	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	274	static mutex_t reqlock = X_MUTEX_INIT;
223	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	275	static cond_t reqwait = X_COND_INIT;
224		276
225	#if WORDACCESS_UNSAFE	277	#if WORDACCESS_UNSAFE
226		278
227	static unsigned int get_nready ()	279	static unsigned int get_nready (void)
228	{	280	{
229	unsigned int retval;	281	unsigned int retval;
230		282
231	LOCK (reqlock);	283	X_LOCK (reqlock);
232	retval = nready;	284	retval = nready;
233	UNLOCK (reqlock);	285	X_UNLOCK (reqlock);
234		286
235	return retval;	287	return retval;
236	}	288	}
237		289
238	static unsigned int get_npending ()	290	static unsigned int get_npending (void)
239	{	291	{
240	unsigned int retval;	292	unsigned int retval;
241		293
242	LOCK (reslock);	294	X_LOCK (reslock);
243	retval = npending;	295	retval = npending;
244	UNLOCK (reslock);	296	X_UNLOCK (reslock);
245		297
246	return retval;	298	return retval;
247	}	299	}
248		300
249	static unsigned int get_nthreads ()	301	static unsigned int get_nthreads (void)
250	{	302	{
251	unsigned int retval;	303	unsigned int retval;
252		304
253	LOCK (wrklock);	305	X_LOCK (wrklock);
254	retval = started;	306	retval = started;
255	UNLOCK (wrklock);	307	X_UNLOCK (wrklock);
256		308
257	return retval;	309	return retval;
258	}	310	}
259		311
260	#else	312	#else
…		…
317	}	369	}
318		370
319	abort ();	371	abort ();
320	}	372	}
321		373
322	static int poll_cb ();	374	static int poll_cb (void);
323	static void req_invoke (aio_req req);	375	static int req_invoke (aio_req req);
324	static void req_free (aio_req req);	376	static void req_destroy (aio_req req);
325	static void req_cancel (aio_req req);	377	static void req_cancel (aio_req req);
326		378
327	/* must be called at most once */	379	/* must be called at most once */
328	static SV *req_sv (aio_req req, const char *klass)	380	static SV *req_sv (aio_req req, const char *klass)
329	{	381	{
…		…
348	return mg ? (aio_req)mg->mg_ptr : 0;	400	return mg ? (aio_req)mg->mg_ptr : 0;
349	}	401	}
350		402
351	static void aio_grp_feed (aio_req grp)	403	static void aio_grp_feed (aio_req grp)
352	{	404	{
		405	block_sig ();
		406
353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))	407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
354	{	408	{
355	int old_len = grp->size;	409	int old_len = grp->size;
356		410
357	if (grp->sv2 && SvOK (grp->sv2))	411	if (grp->sv2 && SvOK (grp->sv2))
…		…
375	SvREFCNT_dec (grp->sv2);	429	SvREFCNT_dec (grp->sv2);
376	grp->sv2 = 0;	430	grp->sv2 = 0;
377	break;	431	break;
378	}	432	}
379	}	433	}
		434
		435	unblock_sig ();
380	}	436	}
381		437
382	static void aio_grp_dec (aio_req grp)	438	static void aio_grp_dec (aio_req grp)
383	{	439	{
384	--grp->size;	440	--grp->size;
…		…
387	aio_grp_feed (grp);	443	aio_grp_feed (grp);
388		444
389	/* finish, if done */	445	/* finish, if done */
390	if (!grp->size && grp->int1)	446	if (!grp->size && grp->int1)
391	{	447	{
		448	block_sig ();
		449
392	req_invoke (grp);	450	if (!req_invoke (grp))
		451	{
		452	req_destroy (grp);
		453	unblock_sig ();
		454	croak (0);
		455	}
		456
393	req_free (grp);	457	req_destroy (grp);
		458	unblock_sig ();
394	}	459	}
395	}	460	}
396		461
397	static void req_invoke (aio_req req)	462	static int req_invoke (aio_req req)
398	{	463	{
399	dSP;	464	dSP;
400		465
401	if (req->flags & FLAG_DATA_RO_OFF)	466	if (req->flags & FLAG_SV2_RO_OFF)
402	SvREADONLY_off (req->sv1);	467	SvREADONLY_off (req->sv2);
403
404	if (req->statdata)
405	{
406	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
407	PL_laststatval = req->result;
408	PL_statcache = *(req->statdata);
409	}
410		468
411	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
412	{	470	{
413	ENTER;	471	ENTER;
414	SAVETMPS;	472	SAVETMPS;
…		…
445	break;	503	break;
446		504
447	case REQ_OPEN:	505	case REQ_OPEN:
448	{	506	{
449	/* convert fd to fh */	507	/* convert fd to fh */
450	SV *fh;	508	SV *fh = &PL_sv_undef;
451		509
452	PUSHs (sv_2mortal (newSViv (req->result)));	510	if (req->result >= 0)
453	PUTBACK;	511	{
454	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	512	GV *gv = (GV *)sv_newmortal ();
455	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);
456		519
457	fh = SvREFCNT_inc (POPs);	520	symlen = snprintf (
		521	sym,
		522	sizeof (sym),
		523	"%s&=%d",
		524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		525	req->result
		526	);
458		527
		528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		529	fh = (SV *)gv;
		530	}
		531
459	PUSHMARK (SP);	532	PUSHs (fh);
460	XPUSHs (sv_2mortal (fh));
461	}	533	}
462	break;	534	break;
463		535
464	case REQ_GROUP:	536	case REQ_GROUP:
465	req->int1 = 2; /* mark group as finished */	537	req->int1 = 2; /* mark group as finished */
…		…
480	break;	552	break;
481		553
482	case REQ_READLINK:	554	case REQ_READLINK:
483	if (req->result > 0)	555	if (req->result > 0)
484	{	556	{
485	SvCUR_set (req->sv1, req->result);	557	SvCUR_set (req->sv2, req->result);
486	*SvEND (req->sv1) = 0;	558	*SvEND (req->sv2) = 0;
487	PUSHs (req->sv1);	559	PUSHs (req->sv2);
488	}	560	}
489	break;	561	break;
490		562
		563	case REQ_STAT:
		564	case REQ_LSTAT:
		565	case REQ_FSTAT:
		566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		567	PL_laststatval = req->result;
		568	PL_statcache = *(Stat_t *)(req->ptr2);
		569	PUSHs (sv_2mortal (newSViv (req->result)));
		570	break;
		571
491	case REQ_READ:	572	case REQ_READ:
492	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));
493	*SvEND (req->sv1) = 0;	574	*SvEND (req->sv2) = 0;
494	/* fall through */	575	PUSHs (sv_2mortal (newSViv (req->result)));
		576	break;
		577
495	default:	578	default:
496	PUSHs (sv_2mortal (newSViv (req->result)));	579	PUSHs (sv_2mortal (newSViv (req->result)));
497	break;	580	break;
498	}	581	}
499		582
500	errno = req->errorno;	583	errno = req->errorno;
501		584
502	PUTBACK;	585	PUTBACK;
503	call_sv (req->callback, G_VOID | G_EVAL);	586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
504	SPAGAIN;	587	SPAGAIN;
505		588
506	FREETMPS;	589	FREETMPS;
507	LEAVE;	590	LEAVE;
		591
		592	PUTBACK;
508	}	593	}
509		594
510	if (req->grp)	595	if (req->grp)
511	{	596	{
512	aio_req grp = req->grp;	597	aio_req grp = req->grp;
…		…
519	grp->grp_first = req->grp_next;	604	grp->grp_first = req->grp_next;
520		605
521	aio_grp_dec (grp);	606	aio_grp_dec (grp);
522	}	607	}
523		608
524	if (SvTRUE (ERRSV))	609	return !SvTRUE (ERRSV);
525	{
526	req_free (req);
527	croak (0);
528	}
529	}	610	}
530		611
531	static void req_free (aio_req req)	612	static void req_destroy (aio_req req)
532	{	613	{
533	if (req->self)	614	if (req->self)
534	{	615	{
535	sv_unmagic (req->self, PERL_MAGIC_ext);	616	sv_unmagic (req->self, PERL_MAGIC_ext);
536	SvREFCNT_dec (req->self);	617	SvREFCNT_dec (req->self);
537	}	618	}
538		619
539	SvREFCNT_dec (req->fh);
540	SvREFCNT_dec (req->sv1);	620	SvREFCNT_dec (req->sv1);
541	SvREFCNT_dec (req->sv2);	621	SvREFCNT_dec (req->sv2);
542	SvREFCNT_dec (req->callback);	622	SvREFCNT_dec (req->callback);
543	Safefree (req->statdata);
544		623
545	if (req->type == REQ_READDIR)	624	if (req->flags & FLAG_PTR2_FREE)
546	free (req->ptr2);	625	free (req->ptr2);
547		626
548	Safefree (req);	627	Safefree (req);
549	}	628	}
550		629
…		…
567	req->flags |= FLAG_CANCELLED;	646	req->flags |= FLAG_CANCELLED;
568		647
569	req_cancel_subs (req);	648	req_cancel_subs (req);
570	}	649	}
571		650
572	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);
573		696
574	static void start_thread (void)	697	static void start_thread (void)
575	{	698	{
576	sigset_t fullsigset, oldsigset;
577	pthread_attr_t attr;
578
579	worker *wrk = calloc (1, sizeof (worker));	699	worker *wrk = calloc (1, sizeof (worker));
580		700
581	if (!wrk)	701	if (!wrk)
582	croak ("unable to allocate worker thread data");	702	croak ("unable to allocate worker thread data");
583		703
584	pthread_attr_init (&attr);
585	pthread_attr_setstacksize (&attr, STACKSIZE);
586	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
587	#ifdef PTHREAD_SCOPE_PROCESS
588	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
589	#endif
590
591	sigfillset (&fullsigset);
592
593	LOCK (wrklock);	704	X_LOCK (wrklock);
594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
595		705
596	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
597	{	707	{
598	wrk->prev = &wrk_first;	708	wrk->prev = &wrk_first;
599	wrk->next = wrk_first.next;	709	wrk->next = wrk_first.next;
600	wrk_first.next->prev = wrk;	710	wrk_first.next->prev = wrk;
601	wrk_first.next = wrk;	711	wrk_first.next = wrk;
602	++started;	712	++started;
603	}	713	}
604	else	714	else
605	free (wrk);	715	free (wrk);
606		716
607	sigprocmask (SIG_SETMASK, &oldsigset, 0);
608	UNLOCK (wrklock);	717	X_UNLOCK (wrklock);
609	}	718	}
610		719
611	static void maybe_start_thread ()	720	static void maybe_start_thread (void)
612	{	721	{
613	if (get_nthreads () >= wanted)	722	if (get_nthreads () >= wanted)
614	return;	723	return;
615		724
616	/* todo: maybe use idle here, but might be less exact */	725	/* todo: maybe use idle here, but might be less exact */
…		…
620	start_thread ();	729	start_thread ();
621	}	730	}
622		731
623	static void req_send (aio_req req)	732	static void req_send (aio_req req)
624	{	733	{
		734	block_sig ();
		735
625	++nreqs;	736	++nreqs;
626		737
627	LOCK (reqlock);	738	X_LOCK (reqlock);
628	++nready;	739	++nready;
629	reqq_push (&req_queue, req);	740	reqq_push (&req_queue, req);
630	pthread_cond_signal (&reqwait);	741	X_COND_SIGNAL (reqwait);
631	UNLOCK (reqlock);	742	X_UNLOCK (reqlock);
		743
		744	unblock_sig ();
632		745
633	maybe_start_thread ();	746	maybe_start_thread ();
634	}	747	}
635		748
636	static void end_thread (void)	749	static void end_thread (void)
…		…
640	Newz (0, req, 1, aio_cb);	753	Newz (0, req, 1, aio_cb);
641		754
642	req->type = REQ_QUIT;	755	req->type = REQ_QUIT;
643	req->pri = PRI_MAX + PRI_BIAS;	756	req->pri = PRI_MAX + PRI_BIAS;
644		757
645	LOCK (reqlock);	758	X_LOCK (reqlock);
646	reqq_push (&req_queue, req);	759	reqq_push (&req_queue, req);
647	pthread_cond_signal (&reqwait);	760	X_COND_SIGNAL (reqwait);
648	UNLOCK (reqlock);	761	X_UNLOCK (reqlock);
649		762
650	LOCK (wrklock);	763	X_LOCK (wrklock);
651	--started;	764	--started;
652	UNLOCK (wrklock);	765	X_UNLOCK (wrklock);
653	}	766	}
654		767
655	static void set_max_idle (int nthreads)	768	static void set_max_idle (int nthreads)
656	{	769	{
657	if (WORDACCESS_UNSAFE) LOCK (reqlock);	770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
658	max_idle = nthreads <= 0 ? 1 : nthreads;	771	max_idle = nthreads <= 0 ? 1 : nthreads;
659	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);	772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
660	}	773	}
661		774
662	static void min_parallel (int nthreads)	775	static void min_parallel (int nthreads)
663	{	776	{
664	if (wanted < nthreads)	777	if (wanted < nthreads)
…		…
672		785
673	while (started > wanted)	786	while (started > wanted)
674	end_thread ();	787	end_thread ();
675	}	788	}
676		789
677	static void poll_wait ()	790	static void poll_wait (void)
678	{	791	{
679	fd_set rfd;	792	fd_set rfd;
680		793
681	while (nreqs)	794	while (nreqs)
682	{	795	{
683	int size;	796	int size;
684	if (WORDACCESS_UNSAFE) LOCK (reslock);	797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
685	size = res_queue.size;	798	size = res_queue.size;
686	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
687		800
688	if (size)	801	if (size)
689	return;	802	return;
690		803
691	maybe_start_thread ();	804	maybe_start_thread ();
692		805
693	FD_ZERO(&rfd);	806	FD_ZERO (&rfd);
694	FD_SET(respipe [0], &rfd);	807	FD_SET (respipe [0], &rfd);
695		808
696	select (respipe [0] + 1, &rfd, 0, 0, 0);	809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
697	}	810	}
698	}	811	}
699		812
700	static int poll_cb ()	813	static int poll_cb (void)
701	{	814	{
702	dSP;	815	dSP;
703	int count = 0;	816	int count = 0;
704	int maxreqs = max_poll_reqs;	817	int maxreqs = max_poll_reqs;
705	int do_croak = 0;	818	int do_croak = 0;
…		…
707	aio_req req;	820	aio_req req;
708		821
709	if (max_poll_time)	822	if (max_poll_time)
710	gettimeofday (&tv_start, 0);	823	gettimeofday (&tv_start, 0);
711		824
		825	block_sig ();
		826
712	for (;;)	827	for (;;)
713	{	828	{
714	for (;;)	829	for (;;)
715	{	830	{
716	maybe_start_thread ();	831	maybe_start_thread ();
717		832
718	LOCK (reslock);	833	X_LOCK (reslock);
719	req = reqq_shift (&res_queue);	834	req = reqq_shift (&res_queue);
720		835
721	if (req)	836	if (req)
722	{	837	{
723	--npending;	838	--npending;
724		839
725	if (!res_queue.size)	840	if (!res_queue.size)
726	{	841	{
727	/* read any signals sent by the worker threads */	842	/* read any signals sent by the worker threads */
728	char buf [32];	843	char buf [4];
729	while (read (respipe [0], buf, 32) == 32)	844	while (respipe_read (respipe [0], buf, 4) == 4)
730	;	845	;
731	}	846	}
732	}	847	}
733		848
734	UNLOCK (reslock);	849	X_UNLOCK (reslock);
735		850
736	if (!req)	851	if (!req)
737	break;	852	break;
738		853
739	--nreqs;	854	--nreqs;
…		…
743	req->int1 = 1; /* mark request as delayed */	858	req->int1 = 1; /* mark request as delayed */
744	continue;	859	continue;
745	}	860	}
746	else	861	else
747	{	862	{
748	req_invoke (req);	863	if (!req_invoke (req))
		864	{
		865	req_destroy (req);
		866	unblock_sig ();
		867	croak (0);
		868	}
749		869
750	count++;	870	count++;
751	}	871	}
752		872
753	req_free (req);	873	req_destroy (req);
754		874
755	if (maxreqs && !--maxreqs)	875	if (maxreqs && !--maxreqs)
756	break;	876	break;
757		877
758	if (max_poll_time)	878	if (max_poll_time)
…		…
770	poll_wait ();	890	poll_wait ();
771		891
772	++maxreqs;	892	++maxreqs;
773	}	893	}
774		894
		895	unblock_sig ();
775	return count;	896	return count;
776	}
777
778	static void create_pipe ()
779	{
780	if (pipe (respipe))
781	croak ("unable to initialize result pipe");
782
783	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
784	croak ("cannot set result pipe to nonblocking mode");
785
786	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
787	croak ("cannot set result pipe to nonblocking mode");
788	}	897	}
789		898
790	/*****************************************************************************/	899	/*****************************************************************************/
791	/* work around various missing functions */	900	/* work around various missing functions */
792		901
…		…
797	/*	906	/*
798	* make our pread/pwrite safe against themselves, but not against	907	* make our pread/pwrite safe against themselves, but not against
799	* 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,
800	* but that's your problem, not mine.	909	* but that's your problem, not mine.
801	*/	910	*/
802	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	911	static mutex_t preadwritelock = X_MUTEX_INIT;
803		912
804	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)
805	{	914	{
806	ssize_t res;	915	ssize_t res;
807	off_t ooffset;	916	off_t ooffset;
808		917
809	LOCK (preadwritelock);	918	X_LOCK (preadwritelock);
810	ooffset = lseek (fd, 0, SEEK_CUR);	919	ooffset = lseek (fd, 0, SEEK_CUR);
811	lseek (fd, offset, SEEK_SET);	920	lseek (fd, offset, SEEK_SET);
812	res = read (fd, buf, count);	921	res = read (fd, buf, count);
813	lseek (fd, ooffset, SEEK_SET);	922	lseek (fd, ooffset, SEEK_SET);
814	UNLOCK (preadwritelock);	923	X_UNLOCK (preadwritelock);
815		924
816	return res;	925	return res;
817	}	926	}
818		927
819	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)
820	{	929	{
821	ssize_t res;	930	ssize_t res;
822	off_t ooffset;	931	off_t ooffset;
823		932
824	LOCK (preadwritelock);	933	X_LOCK (preadwritelock);
825	ooffset = lseek (fd, 0, SEEK_CUR);	934	ooffset = lseek (fd, 0, SEEK_CUR);
826	lseek (fd, offset, SEEK_SET);	935	lseek (fd, offset, SEEK_SET);
827	res = write (fd, buf, count);	936	res = write (fd, buf, count);
828	lseek (fd, offset, SEEK_SET);	937	lseek (fd, offset, SEEK_SET);
829	UNLOCK (preadwritelock);	938	X_UNLOCK (preadwritelock);
830		939
831	return res;	940	return res;
832	}	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
833	#endif	970	#endif
834		971
835	#if !HAVE_FDATASYNC	972	#if !HAVE_FDATASYNC
836	# define fdatasync fsync	973	# define fdatasync fsync
837	#endif	974	#endif
…		…
839	#if !HAVE_READAHEAD	976	#if !HAVE_READAHEAD
840	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)	977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
841		978
842	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)
843	{	980	{
		981	size_t todo = count;
844	dBUF;	982	dBUF;
845		983
846	while (count > 0)	984	while (todo > 0)
847	{	985	{
848	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
849		987
850	pread (fd, aio_buf, len, offset);	988	pread (fd, aio_buf, len, offset);
851	offset += len;	989	offset += len;
852	count -= len;	990	todo -= len;
853	}	991	}
854		992
855	errno = 0;	993	errno = 0;
		994	return count;
856	}	995	}
857		996
858	#endif	997	#endif
859		998
860	#if !HAVE_READDIR_R	999	#if !HAVE_READDIR_R
861	# define readdir_r aio_readdir_r	1000	# define readdir_r aio_readdir_r
862		1001
863	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1002	static mutex_t readdirlock = X_MUTEX_INIT;
864		1003
865	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)
866	{	1005	{
867	struct dirent *e;	1006	X_DIRENT *e;
868	int errorno;	1007	int errorno;
869		1008
870	LOCK (readdirlock);	1009	X_LOCK (readdirlock);
871		1010
872	e = readdir (dirp);	1011	e = readdir (dirp);
873	errorno = errno;	1012	errorno = errno;
874		1013
875	if (e)	1014	if (e)
…		…
878	strcpy (ent->d_name, e->d_name);	1017	strcpy (ent->d_name, e->d_name);
879	}	1018	}
880	else	1019	else
881	*res = 0;	1020	*res = 0;
882		1021
883	UNLOCK (readdirlock);	1022	X_UNLOCK (readdirlock);
884		1023
885	errno = errorno;	1024	errno = errorno;
886	return e ? 0 : -1;	1025	return e ? 0 : -1;
887	}	1026	}
888	#endif	1027	#endif
…		…
984	static void scandir_ (aio_req req, worker *self)	1123	static void scandir_ (aio_req req, worker *self)
985	{	1124	{
986	DIR *dirp;	1125	DIR *dirp;
987	union	1126	union
988	{	1127	{
989	struct dirent d;	1128	X_DIRENT d;
990	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
991	} *u;	1130	} *u;
992	struct dirent *entp;	1131	X_DIRENT *entp;
993	char *name, *names;	1132	char *name, *names;
994	int memlen = 4096;	1133	int memlen = 4096;
995	int memofs = 0;	1134	int memofs = 0;
996	int res = 0;	1135	int res = 0;
997	int errorno;
998		1136
999	LOCK (wrklock);	1137	X_LOCK (wrklock);
1000	self->dirp = dirp = opendir (req->ptr1);	1138	self->dirp = dirp = opendir (req->ptr1);
1001	self->dbuf = u = malloc (sizeof (*u));	1139	self->dbuf = u = malloc (sizeof (*u));
		1140	req->flags |= FLAG_PTR2_FREE;
1002	req->ptr2 = names = malloc (memlen);	1141	req->ptr2 = names = malloc (memlen);
1003	UNLOCK (wrklock);	1142	X_UNLOCK (wrklock);
1004		1143
1005	if (dirp && u && names)	1144	if (dirp && u && names)
1006	for (;;)	1145	for (;;)
1007	{	1146	{
1008	errno = 0;	1147	errno = 0;
…		…
1020	res++;	1159	res++;
1021		1160
1022	while (memofs + len > memlen)	1161	while (memofs + len > memlen)
1023	{	1162	{
1024	memlen *= 2;	1163	memlen *= 2;
1025	LOCK (wrklock);	1164	X_LOCK (wrklock);
1026	req->ptr2 = names = realloc (names, memlen);	1165	req->ptr2 = names = realloc (names, memlen);
1027	UNLOCK (wrklock);	1166	X_UNLOCK (wrklock);
1028		1167
1029	if (!names)	1168	if (!names)
1030	break;	1169	break;
1031	}	1170	}
1032		1171
…		…
1039	res = -1;	1178	res = -1;
1040		1179
1041	req->result = res;	1180	req->result = res;
1042	}	1181	}
1043		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
1044	/*****************************************************************************/	1210	/*****************************************************************************/
1045		1211
1046	static void *aio_proc (void *thr_arg)	1212	X_THREAD_PROC (aio_proc)
1047	{	1213	{
1048	aio_req req;	1214	aio_req req;
1049	struct timespec ts;	1215	struct timespec ts;
1050	worker *self = (worker *)thr_arg;	1216	worker *self = (worker *)thr_arg;
1051		1217
1052	/* try to distribute timeouts somewhat evenly */	1218	/* try to distribute timeouts somewhat randomly */
1053	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)	1219	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1054	* (1000000000UL / 1024UL);
1055		1220
1056	for (;;)	1221	for (;;)
1057	{	1222	{
1058	ts.tv_sec = time (0) + IDLE_TIMEOUT;	1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1059		1224
1060	LOCK (reqlock);	1225	X_LOCK (reqlock);
1061		1226
1062	for (;;)	1227	for (;;)
1063	{	1228	{
1064	self->req = req = reqq_shift (&req_queue);	1229	self->req = req = reqq_shift (&req_queue);
1065		1230
1066	if (req)	1231	if (req)
1067	break;	1232	break;
1068		1233
1069	++idle;	1234	++idle;
1070		1235
1071	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)	1236	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1072	== ETIMEDOUT)	1237	== ETIMEDOUT)
1073	{	1238	{
1074	if (idle > max_idle)	1239	if (idle > max_idle)
1075	{	1240	{
1076	--idle;	1241	--idle;
1077	UNLOCK (reqlock);	1242	X_UNLOCK (reqlock);
1078	LOCK (wrklock);	1243	X_LOCK (wrklock);
1079	--started;	1244	--started;
1080	UNLOCK (wrklock);	1245	X_UNLOCK (wrklock);
1081	goto quit;	1246	goto quit;
1082	}	1247	}
1083		1248
1084	/* we are allowed to idle, so do so without any timeout */	1249	/* we are allowed to idle, so do so without any timeout */
1085	pthread_cond_wait (&reqwait, &reqlock);	1250	X_COND_WAIT (reqwait, reqlock);
1086	ts.tv_sec = time (0) + IDLE_TIMEOUT;	1251	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1087	}	1252	}
1088		1253
1089	--idle;	1254	--idle;
1090	}	1255	}
1091		1256
1092	--nready;	1257	--nready;
1093		1258
1094	UNLOCK (reqlock);	1259	X_UNLOCK (reqlock);
1095		1260
1096	errno = 0; /* strictly unnecessary */	1261	errno = 0; /* strictly unnecessary */
1097		1262
1098	if (!(req->flags & FLAG_CANCELLED))	1263	if (!(req->flags & FLAG_CANCELLED))
1099	switch (req->type)	1264	switch (req->type)
1100	{	1265	{
1101	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;	1266	case REQ_READ: req->result = req->offs >= 0
1102	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;
1103		1272
1104	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;
1105	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;
1106		1275
1107	case REQ_STAT: req->result = stat (req->ptr1, req->statdata); break;	1276	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1108	case REQ_LSTAT: req->result = lstat (req->ptr1, req->statdata); break;	1277	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1109	case REQ_FSTAT: req->result = fstat (req->int1, req->statdata); break;	1278	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
		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;
1110		1286
1111	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;
1112	case REQ_CLOSE: req->result = close (req->int1); break;	1288	case REQ_CLOSE: req->result = aio_close (req->int1); break;
1113	case REQ_UNLINK: req->result = unlink (req->ptr1); break;	1289	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1114	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;
1115	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;	1292	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1116	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;	1293	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1117	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;	1294	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1118	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;
1119	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;
1120		1297
		1298	case REQ_SYNC: req->result = 0; sync (); break;
		1299	case REQ_FSYNC: req->result = fsync (req->int1); break;
1121	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;	1300	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1122	case REQ_FSYNC: req->result = fsync (req->int1); break;	1301
1123	case REQ_READDIR: scandir_ (req, self); break;	1302	case REQ_READDIR: scandir_ (req, self); break;
1124		1303
1125	case REQ_BUSY:	1304	case REQ_BUSY:
		1305	#ifdef _WIN32
		1306	Sleep (req->nv1 * 1000.);
		1307	#else
1126	{	1308	{
1127	struct timeval tv;	1309	struct timeval tv;
1128		1310
1129	tv.tv_sec = req->int1;	1311	tv.tv_sec = req->nv1;
1130	tv.tv_usec = req->int2;	1312	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1131		1313
1132	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);
1133	}	1341	}
1134		1342
1135	case REQ_GROUP:	1343	case REQ_GROUP:
1136	case REQ_NOP:	1344	case REQ_NOP:
1137	break;	1345	break;
1138		1346
1139	case REQ_QUIT:	1347	case REQ_QUIT:
1140	goto quit;	1348	goto quit;
1141		1349
1142	default:	1350	default:
1143	req->result = ENOSYS;	1351	req->result = -1;
1144	break;	1352	break;
1145	}	1353	}
1146		1354
1147	req->errorno = errno;	1355	req->errorno = errno;
1148		1356
1149	LOCK (reslock);	1357	X_LOCK (reslock);
1150		1358
1151	++npending;	1359	++npending;
1152		1360
1153	if (!reqq_push (&res_queue, req))	1361	if (!reqq_push (&res_queue, req))
		1362	{
1154	/* write a dummy byte to the pipe so fh becomes ready */	1363	/* write a dummy byte to the pipe so fh becomes ready */
1155	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	}
1156		1370
1157	self->req = 0;	1371	self->req = 0;
1158	worker_clear (self);	1372	worker_clear (self);
1159		1373
1160	UNLOCK (reslock);	1374	X_UNLOCK (reslock);
1161	}	1375	}
1162		1376
1163	quit:	1377	quit:
1164	LOCK (wrklock);	1378	X_LOCK (wrklock);
1165	worker_free (self);	1379	worker_free (self);
1166	UNLOCK (wrklock);	1380	X_UNLOCK (wrklock);
1167		1381
1168	return 0;	1382	return 0;
1169	}	1383	}
1170		1384
1171	/*****************************************************************************/	1385	/*****************************************************************************/
1172		1386
1173	static void atfork_prepare (void)	1387	static void atfork_prepare (void)
1174	{	1388	{
1175	LOCK (wrklock);	1389	X_LOCK (wrklock);
1176	LOCK (reqlock);	1390	X_LOCK (reqlock);
1177	LOCK (reslock);	1391	X_LOCK (reslock);
1178	#if !HAVE_PREADWRITE	1392	#if !HAVE_PREADWRITE
1179	LOCK (preadwritelock);	1393	X_LOCK (preadwritelock);
1180	#endif	1394	#endif
1181	#if !HAVE_READDIR_R	1395	#if !HAVE_READDIR_R
1182	LOCK (readdirlock);	1396	X_LOCK (readdirlock);
1183	#endif	1397	#endif
1184	}	1398	}
1185		1399
1186	static void atfork_parent (void)	1400	static void atfork_parent (void)
1187	{	1401	{
1188	#if !HAVE_READDIR_R	1402	#if !HAVE_READDIR_R
1189	UNLOCK (readdirlock);	1403	X_UNLOCK (readdirlock);
1190	#endif	1404	#endif
1191	#if !HAVE_PREADWRITE	1405	#if !HAVE_PREADWRITE
1192	UNLOCK (preadwritelock);	1406	X_UNLOCK (preadwritelock);
1193	#endif	1407	#endif
1194	UNLOCK (reslock);	1408	X_UNLOCK (reslock);
1195	UNLOCK (reqlock);	1409	X_UNLOCK (reqlock);
1196	UNLOCK (wrklock);	1410	X_UNLOCK (wrklock);
1197	}	1411	}
1198		1412
1199	static void atfork_child (void)	1413	static void atfork_child (void)
1200	{	1414	{
1201	aio_req prv;	1415	aio_req prv;
1202		1416
1203	while (prv = reqq_shift (&req_queue))	1417	while (prv = reqq_shift (&req_queue))
1204	req_free (prv);	1418	req_destroy (prv);
1205		1419
1206	while (prv = reqq_shift (&res_queue))	1420	while (prv = reqq_shift (&res_queue))
1207	req_free (prv);	1421	req_destroy (prv);
1208		1422
1209	while (wrk_first.next != &wrk_first)	1423	while (wrk_first.next != &wrk_first)
1210	{	1424	{
1211	worker *wrk = wrk_first.next;	1425	worker *wrk = wrk_first.next;
1212		1426
1213	if (wrk->req)	1427	if (wrk->req)
1214	req_free (wrk->req);	1428	req_destroy (wrk->req);
1215		1429
1216	worker_clear (wrk);	1430	worker_clear (wrk);
1217	worker_free (wrk);	1431	worker_free (wrk);
1218	}	1432	}
1219		1433
…		…
1221	idle = 0;	1435	idle = 0;
1222	nreqs = 0;	1436	nreqs = 0;
1223	nready = 0;	1437	nready = 0;
1224	npending = 0;	1438	npending = 0;
1225		1439
1226	close (respipe [0]);
1227	close (respipe [1]);
1228	create_pipe ();	1440	create_respipe ();
1229		1441
1230	atfork_parent ();	1442	atfork_parent ();
1231	}	1443	}
1232		1444
1233	#define dREQ \	1445	#define dREQ \
…		…
1255		1467
1256	PROTOTYPES: ENABLE	1468	PROTOTYPES: ENABLE
1257		1469
1258	BOOT:	1470	BOOT:
1259	{	1471	{
1260	HV *stash = gv_stashpv ("IO::AIO", 1);	1472	stash = gv_stashpv ("IO::AIO", 1);
1261		1473
1262	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1474	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1263	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1475	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1264	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1476	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1265	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));	1477	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1266	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
1267	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));	1489	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1490	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1491	#endif
1268		1492
1269	create_pipe ();	1493	create_respipe ();
		1494
1270	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1495	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1271	}	1496	}
1272		1497
1273	void	1498	void
1274	max_poll_reqs (int nreqs)	1499	max_poll_reqs (int nreqs)
1275	PROTOTYPE: $	1500	PROTOTYPE: $
…		…
1304	max_outstanding = maxreqs;	1529	max_outstanding = maxreqs;
1305	OUTPUT:	1530	OUTPUT:
1306	RETVAL	1531	RETVAL
1307		1532
1308	void	1533	void
1309	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1534	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1310	SV * pathname
1311	int flags
1312	int mode
1313	SV * callback
1314	PROTOTYPE: $$$;$	1535	PROTOTYPE: $$$;$
1315	PPCODE:	1536	PPCODE:
1316	{	1537	{
1317	dREQ;	1538	dREQ;
1318		1539
1319	req->type = REQ_OPEN;	1540	req->type = REQ_OPEN;
1320	req->sv1 = newSVsv (pathname);	1541	req->sv1 = newSVsv (pathname);
1321	req->ptr1 = SvPVbyte_nolen (pathname);	1542	req->ptr1 = SvPVbyte_nolen (req->sv1);
1322	req->int1 = flags;	1543	req->int1 = flags;
1323	req->mode = mode;	1544	req->mode = mode;
1324		1545
1325	REQ_SEND;	1546	REQ_SEND;
1326	}	1547	}
1327		1548
1328	void	1549	void
1329	aio_close (fh,callback=&PL_sv_undef)	1550	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1330	SV * fh
1331	SV * callback
1332	PROTOTYPE: $;$	1551	PROTOTYPE: $;$
1333	ALIAS:	1552	ALIAS:
1334	aio_close = REQ_CLOSE
1335	aio_fsync = REQ_FSYNC	1553	aio_fsync = REQ_FSYNC
1336	aio_fdatasync = REQ_FDATASYNC	1554	aio_fdatasync = REQ_FDATASYNC
1337	PPCODE:	1555	PPCODE:
1338	{	1556	{
1339	dREQ;	1557	dREQ;
1340		1558
1341	req->type = ix;	1559	req->type = ix;
1342	req->fh = newSVsv (fh);	1560	req->sv1 = newSVsv (fh);
1343	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1561	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1344		1562
1345	REQ_SEND (req);	1563	REQ_SEND (req);
1346	}	1564	}
1347		1565
1348	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->sv1 = newSVsv (fh);
		1575	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		1576
		1577	REQ_SEND (req);
		1578	}
		1579
		1580	void
1349	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1581	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1350	SV * fh
1351	UV offset
1352	UV length
1353	SV * data
1354	UV dataoffset
1355	SV * callback
1356	ALIAS:	1582	ALIAS:
1357	aio_read = REQ_READ	1583	aio_read = REQ_READ
1358	aio_write = REQ_WRITE	1584	aio_write = REQ_WRITE
1359	PROTOTYPE: $$$$$;$	1585	PROTOTYPE: $$$$$;$
1360	PPCODE:	1586	PPCODE:
1361	{	1587	{
1362	STRLEN svlen;	1588	STRLEN svlen;
1363	char *svptr = SvPVbyte (data, svlen);	1589	char *svptr = SvPVbyte (data, svlen);
		1590	UV len = SvUV (length);
1364		1591
1365	SvUPGRADE (data, SVt_PV);	1592	SvUPGRADE (data, SVt_PV);
1366	SvPOK_on (data);	1593	SvPOK_on (data);
1367		1594
1368	if (dataoffset < 0)	1595	if (dataoffset < 0)
1369	dataoffset += svlen;	1596	dataoffset += svlen;
1370		1597
1371	if (dataoffset < 0 || dataoffset > svlen)	1598	if (dataoffset < 0 || dataoffset > svlen)
1372	croak ("data offset outside of string");	1599	croak ("dataoffset outside of data scalar");
1373		1600
1374	if (ix == REQ_WRITE)	1601	if (ix == REQ_WRITE)
1375	{	1602	{
1376	/* write: check length and adjust. */	1603	/* write: check length and adjust. */
1377	if (length < 0 || length + dataoffset > svlen)	1604	if (!SvOK (length) || len + dataoffset > svlen)
1378	length = svlen - dataoffset;	1605	len = svlen - dataoffset;
1379	}	1606	}
1380	else	1607	else
1381	{	1608	{
1382	/* read: grow scalar as necessary */	1609	/* read: grow scalar as necessary */
1383	svptr = SvGROW (data, length + dataoffset);	1610	svptr = SvGROW (data, len + dataoffset + 1);
1384	}	1611	}
1385		1612
1386	if (length < 0)	1613	if (len < 0)
1387	croak ("length must not be negative");	1614	croak ("length must not be negative");
1388		1615
1389	{	1616	{
1390	dREQ;	1617	dREQ;
1391		1618
1392	req->type = ix;	1619	req->type = ix;
1393	req->fh = newSVsv (fh);	1620	req->sv1 = newSVsv (fh);
1394	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1621	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1395	: IoOFP (sv_2io (fh)));	1622	: IoOFP (sv_2io (fh)));
1396	req->offs = offset;	1623	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1397	req->size = length;	1624	req->size = len;
1398	req->sv1 = SvREFCNT_inc (data);	1625	req->sv2 = SvREFCNT_inc (data);
1399	req->ptr1 = (char *)svptr + dataoffset;	1626	req->ptr1 = (char *)svptr + dataoffset;
1400	req->stroffset = dataoffset;	1627	req->stroffset = dataoffset;
1401		1628
1402	if (!SvREADONLY (data))	1629	if (!SvREADONLY (data))
1403	{	1630	{
1404	SvREADONLY_on (data);	1631	SvREADONLY_on (data);
1405	req->flags |= FLAG_DATA_RO_OFF;	1632	req->flags |= FLAG_SV2_RO_OFF;
1406	}	1633	}
1407		1634
1408	REQ_SEND;	1635	REQ_SEND;
1409	}	1636	}
1410	}	1637	}
1411		1638
1412	void	1639	void
1413	aio_readlink (path,callback=&PL_sv_undef)	1640	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
1414	SV * path
1415	SV * callback
1416	PROTOTYPE: $$;$	1641	PROTOTYPE: $$;$
1417	PPCODE:	1642	PPCODE:
1418	{	1643	{
1419	SV *data;	1644	SV *data;
1420	dREQ;	1645	dREQ;
1421		1646
1422	data = newSV (NAME_MAX);	1647	data = newSV (NAME_MAX);
1423	SvPOK_on (data);	1648	SvPOK_on (data);
1424		1649
1425	req->type = REQ_READLINK;	1650	req->type = REQ_READLINK;
1426	req->fh = newSVsv (path);	1651	req->sv1 = newSVsv (path);
1427	req->ptr2 = SvPVbyte_nolen (path);	1652	req->ptr2 = SvPVbyte_nolen (req->sv1);
1428	req->sv1 = data;	1653	req->sv2 = data;
1429	req->ptr1 = SvPVbyte_nolen (data);	1654	req->ptr1 = SvPVbyte_nolen (data);
1430		1655
1431	REQ_SEND;	1656	REQ_SEND;
1432	}	1657	}
1433		1658
1434	void	1659	void
1435	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1660	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1436	SV * out_fh
1437	SV * in_fh
1438	UV in_offset
1439	UV length
1440	SV * callback
1441	PROTOTYPE: $$$$;$	1661	PROTOTYPE: $$$$;$
1442	PPCODE:	1662	PPCODE:
1443	{	1663	{
1444	dREQ;	1664	dREQ;
1445		1665
1446	req->type = REQ_SENDFILE;	1666	req->type = REQ_SENDFILE;
1447	req->fh = newSVsv (out_fh);	1667	req->sv1 = newSVsv (out_fh);
1448	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1668	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1449	req->sv2 = newSVsv (in_fh);	1669	req->sv2 = newSVsv (in_fh);
1450	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1670	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1451	req->offs = in_offset;	1671	req->offs = SvVAL64 (in_offset);
1452	req->size = length;	1672	req->size = length;
1453		1673
1454	REQ_SEND;	1674	REQ_SEND;
1455	}	1675	}
1456		1676
1457	void	1677	void
1458	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1678	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1459	SV * fh
1460	UV offset
1461	IV length
1462	SV * callback
1463	PROTOTYPE: $$$;$	1679	PROTOTYPE: $$$;$
1464	PPCODE:	1680	PPCODE:
1465	{	1681	{
1466	dREQ;	1682	dREQ;
1467		1683
1468	req->type = REQ_READAHEAD;	1684	req->type = REQ_READAHEAD;
1469	req->fh = newSVsv (fh);	1685	req->sv1 = newSVsv (fh);
1470	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1686	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1471	req->offs = offset;	1687	req->offs = SvVAL64 (offset);
1472	req->size = length;	1688	req->size = length;
1473		1689
1474	REQ_SEND;	1690	REQ_SEND;
1475	}	1691	}
1476		1692
1477	void	1693	void
1478	aio_stat (fh_or_path,callback=&PL_sv_undef)	1694	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1479	SV * fh_or_path
1480	SV * callback
1481	ALIAS:	1695	ALIAS:
1482	aio_stat = REQ_STAT	1696	aio_stat = REQ_STAT
1483	aio_lstat = REQ_LSTAT	1697	aio_lstat = REQ_LSTAT
1484	PPCODE:	1698	PPCODE:
1485	{	1699	{
1486	dREQ;	1700	dREQ;
1487		1701
1488	New (0, req->statdata, 1, Stat_t);	1702	req->ptr2 = malloc (sizeof (Stat_t));
1489	if (!req->statdata)	1703	if (!req->ptr2)
1490	{	1704	{
1491	req_free (req);	1705	req_destroy (req);
1492	croak ("out of memory during aio_req->statdata allocation");	1706	croak ("out of memory during aio_stat statdata allocation");
1493	}	1707	}
		1708
		1709	req->flags |= FLAG_PTR2_FREE;
		1710	req->sv1 = newSVsv (fh_or_path);
1494		1711
1495	if (SvPOK (fh_or_path))	1712	if (SvPOK (fh_or_path))
1496	{	1713	{
1497	req->type = ix;	1714	req->type = ix;
1498	req->sv1 = newSVsv (fh_or_path);
1499	req->ptr1 = SvPVbyte_nolen (fh_or_path);	1715	req->ptr1 = SvPVbyte_nolen (req->sv1);
1500	}	1716	}
1501	else	1717	else
1502	{	1718	{
1503	req->type = REQ_FSTAT;	1719	req->type = REQ_FSTAT;
1504	req->fh = newSVsv (fh_or_path);
1505	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1720	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1506	}	1721	}
1507		1722
1508	REQ_SEND;	1723	REQ_SEND;
1509	}	1724	}
1510		1725
1511	void	1726	void
		1727	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1728	PPCODE:
		1729	{
		1730	dREQ;
		1731
		1732	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1733	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1734	req->sv1 = newSVsv (fh_or_path);
		1735
		1736	if (SvPOK (fh_or_path))
		1737	{
		1738	req->type = REQ_UTIME;
		1739	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1740	}
		1741	else
		1742	{
		1743	req->type = REQ_FUTIME;
		1744	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1745	}
		1746
		1747	REQ_SEND;
		1748	}
		1749
		1750	void
		1751	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1752	PPCODE:
		1753	{
		1754	dREQ;
		1755
		1756	req->sv1 = newSVsv (fh_or_path);
		1757	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1758
		1759	if (SvPOK (fh_or_path))
		1760	{
		1761	req->type = REQ_TRUNCATE;
		1762	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1763	}
		1764	else
		1765	{
		1766	req->type = REQ_FTRUNCATE;
		1767	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1768	}
		1769
		1770	REQ_SEND;
		1771	}
		1772
		1773	void
		1774	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1775	PPCODE:
		1776	{
		1777	dREQ;
		1778
		1779	req->mode = mode;
		1780	req->sv1 = newSVsv (fh_or_path);
		1781
		1782	if (SvPOK (fh_or_path))
		1783	{
		1784	req->type = REQ_CHMOD;
		1785	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1786	}
		1787	else
		1788	{
		1789	req->type = REQ_FCHMOD;
		1790	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1791	}
		1792
		1793	REQ_SEND;
		1794	}
		1795
		1796	void
		1797	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1798	PPCODE:
		1799	{
		1800	dREQ;
		1801
		1802	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1803	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1804	req->sv1 = newSVsv (fh_or_path);
		1805
		1806	if (SvPOK (fh_or_path))
		1807	{
		1808	req->type = REQ_CHOWN;
		1809	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1810	}
		1811	else
		1812	{
		1813	req->type = REQ_FCHOWN;
		1814	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1815	}
		1816
		1817	REQ_SEND;
		1818	}
		1819
		1820	void
1512	aio_unlink (pathname,callback=&PL_sv_undef)	1821	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1513	SV * pathname
1514	SV * callback
1515	ALIAS:	1822	ALIAS:
1516	aio_unlink = REQ_UNLINK	1823	aio_unlink = REQ_UNLINK
1517	aio_rmdir = REQ_RMDIR	1824	aio_rmdir = REQ_RMDIR
1518	aio_readdir = REQ_READDIR	1825	aio_readdir = REQ_READDIR
1519	PPCODE:	1826	PPCODE:
1520	{	1827	{
1521	dREQ;	1828	dREQ;
1522		1829
1523	req->type = ix;	1830	req->type = ix;
1524	req->sv1 = newSVsv (pathname);	1831	req->sv1 = newSVsv (pathname);
1525	req->ptr1 = SvPVbyte_nolen (pathname);	1832	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1833
		1834	REQ_SEND;
		1835	}
		1836
		1837	void
		1838	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1839	PPCODE:
		1840	{
		1841	dREQ;
1526		1842
		1843	req->type = REQ_MKDIR;
		1844	req->sv1 = newSVsv (pathname);
		1845	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1846	req->mode = mode;
		1847
1527	REQ_SEND;	1848	REQ_SEND;
1528	}	1849	}
1529		1850
1530	void	1851	void
1531	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1852	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1532	SV * oldpath
1533	SV * newpath
1534	SV * callback
1535	ALIAS:	1853	ALIAS:
1536	aio_link = REQ_LINK	1854	aio_link = REQ_LINK
1537	aio_symlink = REQ_SYMLINK	1855	aio_symlink = REQ_SYMLINK
1538	aio_rename = REQ_RENAME	1856	aio_rename = REQ_RENAME
1539	PPCODE:	1857	PPCODE:
1540	{	1858	{
1541	dREQ;	1859	dREQ;
1542		1860
1543	req->type = ix;	1861	req->type = ix;
1544	req->fh = newSVsv (oldpath);	1862	req->sv2 = newSVsv (oldpath);
1545	req->ptr2 = SvPVbyte_nolen (req->fh);	1863	req->ptr2 = SvPVbyte_nolen (req->sv2);
1546	req->sv1 = newSVsv (newpath);	1864	req->sv1 = newSVsv (newpath);
1547	req->ptr1 = SvPVbyte_nolen (newpath);	1865	req->ptr1 = SvPVbyte_nolen (req->sv1);
1548		1866
1549	REQ_SEND;	1867	REQ_SEND;
1550	}	1868	}
1551		1869
1552	void	1870	void
1553	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)	1871	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1554	SV * pathname
1555	SV * callback
1556	UV mode
1557	UV dev
1558	PPCODE:	1872	PPCODE:
1559	{	1873	{
1560	dREQ;	1874	dREQ;
1561		1875
1562	req->type = REQ_MKNOD;	1876	req->type = REQ_MKNOD;
1563	req->sv1 = newSVsv (pathname);	1877	req->sv1 = newSVsv (pathname);
1564	req->ptr1 = SvPVbyte_nolen (pathname);	1878	req->ptr1 = SvPVbyte_nolen (req->sv1);
1565	req->mode = (mode_t)mode;	1879	req->mode = (mode_t)mode;
1566	req->offs = dev;	1880	req->offs = dev;
1567		1881
1568	REQ_SEND;	1882	REQ_SEND;
1569	}	1883	}
1570		1884
1571	void	1885	void
1572	aio_busy (delay,callback=&PL_sv_undef)	1886	aio_busy (double delay, SV *callback=&PL_sv_undef)
1573	double delay
1574	SV * callback
1575	PPCODE:	1887	PPCODE:
1576	{	1888	{
1577	dREQ;	1889	dREQ;
1578		1890
1579	req->type = REQ_BUSY;	1891	req->type = REQ_BUSY;
1580	req->int1 = delay < 0. ? 0 : delay;	1892	req->nv1 = delay < 0. ? 0. : delay;
1581	req->int2 = delay < 0. ? 0 : 1000. * (delay - req->int1);
1582		1893
1583	REQ_SEND;	1894	REQ_SEND;
1584	}	1895	}
1585		1896
1586	void	1897	void
1587	aio_group (callback=&PL_sv_undef)	1898	aio_group (SV *callback=&PL_sv_undef)
1588	SV * callback
1589	PROTOTYPE: ;$	1899	PROTOTYPE: ;$
1590	PPCODE:	1900	PPCODE:
1591	{	1901	{
1592	dREQ;	1902	dREQ;
1593		1903
…		…
1596	req_send (req);	1906	req_send (req);
1597	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1907	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1598	}	1908	}
1599		1909
1600	void	1910	void
1601	aio_nop (callback=&PL_sv_undef)	1911	aio_nop (SV *callback=&PL_sv_undef)
1602	SV * callback	1912	ALIAS:
		1913	aio_nop = REQ_NOP
		1914	aio_sync = REQ_SYNC
1603	PPCODE:	1915	PPCODE:
1604	{	1916	{
1605	dREQ;	1917	dREQ;
1606		1918
1607	req->type = REQ_NOP;	1919	req->type = ix;
1608		1920
1609	REQ_SEND;	1921	REQ_SEND;
1610	}	1922	}
1611		1923
1612	int	1924	int
…		…
1636	PROTOTYPE:	1948	PROTOTYPE:
1637	CODE:	1949	CODE:
1638	while (nreqs)	1950	while (nreqs)
1639	{	1951	{
1640	poll_wait ();	1952	poll_wait ();
1641	poll_cb (0);	1953	poll_cb ();
1642	}	1954	}
1643		1955
1644	void	1956	int
1645	poll()	1957	poll()
1646	PROTOTYPE:	1958	PROTOTYPE:
1647	CODE:	1959	CODE:
1648	if (nreqs)
1649	{
1650	poll_wait ();	1960	poll_wait ();
1651	poll_cb (0);	1961	RETVAL = poll_cb ();
1652	}	1962	OUTPUT:
		1963	RETVAL
1653		1964
1654	int	1965	int
1655	poll_fileno()	1966	poll_fileno()
1656	PROTOTYPE:	1967	PROTOTYPE:
1657	CODE:	1968	CODE:
…		…
1669		1980
1670	void	1981	void
1671	poll_wait()	1982	poll_wait()
1672	PROTOTYPE:	1983	PROTOTYPE:
1673	CODE:	1984	CODE:
1674	if (nreqs)
1675	poll_wait ();	1985	poll_wait ();
		1986
		1987	void
		1988	setsig (int signum = SIGIO)
		1989	PROTOTYPE: ;$
		1990	CODE:
		1991	{
		1992	if (block_sig_level)
		1993	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1994
		1995	X_LOCK (reslock);
		1996	main_tid = pthread_self ();
		1997	main_sig = signum;
		1998	X_UNLOCK (reslock);
		1999
		2000	if (main_sig && npending)
		2001	pthread_kill (main_tid, main_sig);
		2002	}
		2003
		2004	void
		2005	aio_block (SV *cb)
		2006	PROTOTYPE: &
		2007	PPCODE:
		2008	{
		2009	int count;
		2010
		2011	block_sig ();
		2012	PUSHMARK (SP);
		2013	PUTBACK;
		2014	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		2015	unblock_sig ();
		2016
		2017	if (SvTRUE (ERRSV))
		2018	croak (0);
		2019
		2020	XSRETURN (count);
		2021	}
1676		2022
1677	int	2023	int
1678	nreqs()	2024	nreqs()
1679	PROTOTYPE:	2025	PROTOTYPE:
1680	CODE:	2026	CODE:
…		…
1700		2046
1701	int	2047	int
1702	nthreads()	2048	nthreads()
1703	PROTOTYPE:	2049	PROTOTYPE:
1704	CODE:	2050	CODE:
1705	if (WORDACCESS_UNSAFE) LOCK (wrklock);	2051	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
1706	RETVAL = started;	2052	RETVAL = started;
1707	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);	2053	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
1708	OUTPUT:	2054	OUTPUT:
1709	RETVAL	2055	RETVAL
1710		2056
1711	PROTOTYPES: DISABLE	2057	PROTOTYPES: DISABLE
1712		2058
…		…
1730	PPCODE:	2076	PPCODE:
1731	{	2077	{
1732	int i;	2078	int i;
1733	aio_req req;	2079	aio_req req;
1734		2080
		2081	if (main_sig && !block_sig_level)
		2082	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		2083
1735	if (grp->int1 == 2)	2084	if (grp->int1 == 2)
1736	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2085	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1737		2086
1738	for (i = 1; i < items; ++i )	2087	for (i = 1; i < items; ++i )
1739	{	2088	{

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