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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.74 by root, Wed Oct 25 17:57:30 2006 UTC vs.
Revision 1.112 by root, Tue Apr 1 19:40:47 2008 UTC

1	/* solaris */	1	#include "xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux
5	# define _GNU_SOURCE
6	#endif
7
8	#define _REENTRANT 1
9		2
10	#include <errno.h>	3	#include <errno.h>
11		4
12	#include "EXTERN.h"	5	#include "EXTERN.h"
13	#include "perl.h"	6	#include "perl.h"
14	#include "XSUB.h"	7	#include "XSUB.h"
15		8
16	#include "autoconf/config.h"
17
18	#include <pthread.h>
19
20	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
21	#include <errno.h>	11	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	12	#include <sys/types.h>
25	#include <sys/stat.h>	13	#include <sys/stat.h>
26	#include <limits.h>	14	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	15	#include <fcntl.h>
29	#include <signal.h>
30	#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
31		68
32	#if HAVE_SENDFILE	69	#if HAVE_SENDFILE
33	# if __linux	70	# if __linux
34	# include <sys/sendfile.h>	71	# include <sys/sendfile.h>
35	# elif __freebsd	72	# elif __freebsd
…		…
42	# else	79	# else
43	# error sendfile support requested but not available	80	# error sendfile support requested but not available
44	# endif	81	# endif
45	#endif	82	#endif
46		83
		84	/* number of seconds after which idle threads exit */
		85	#define IDLE_TIMEOUT 10
		86
47	/* used for struct dirent, AIX doesn't provide it */	87	/* used for struct dirent, AIX doesn't provide it */
48	#ifndef NAME_MAX	88	#ifndef NAME_MAX
49	# define NAME_MAX 4096	89	# define NAME_MAX 4096
50	#endif	90	#endif
51		91
52	#if __ia64
53	# define STACKSIZE 65536
54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
55	# define STACKSIZE PTHREAD_STACK_MIN
56	#else
57	# define STACKSIZE 16384
58	#endif
59
60	/* buffer size for various temporary buffers */	92	/* buffer size for various temporary buffers */
61	#define AIO_BUFSIZE 65536	93	#define AIO_BUFSIZE 65536
62		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
63	#define dBUF \	104	#define dBUF \
64	char *aio_buf; \	105	char *aio_buf; \
65	LOCK (wrklock); \	106	X_LOCK (wrklock); \
66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
67	UNLOCK (wrklock); \	108	X_UNLOCK (wrklock); \
68	if (!aio_buf) \	109	if (!aio_buf) \
69	return -1;	110	return -1;
		111
		112	typedef SV SV8; /* byte-sv, used for argument-checking */
70		113
71	enum {	114	enum {
72	REQ_QUIT,	115	REQ_QUIT,
73	REQ_OPEN, REQ_CLOSE,	116	REQ_OPEN, REQ_CLOSE,
74	REQ_READ, REQ_WRITE, REQ_READAHEAD,	117	REQ_READ, REQ_WRITE,
75	REQ_SENDFILE,	118	REQ_READAHEAD, REQ_SENDFILE,
76	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,
77	REQ_FSYNC, REQ_FDATASYNC,	124	REQ_SYNC, REQ_FSYNC, REQ_FDATASYNC,
78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
79	REQ_READDIR,	126	REQ_MKNOD, REQ_READDIR,
80	REQ_LINK, REQ_SYMLINK,	127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
81	REQ_GROUP, REQ_NOP,	128	REQ_GROUP, REQ_NOP,
82	REQ_BUSY,	129	REQ_BUSY,
83	};	130	};
84		131
85	#define AIO_REQ_KLASS "IO::AIO::REQ"	132	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
87		134
88	typedef struct aio_cb	135	typedef struct aio_cb
89	{	136	{
90	struct aio_cb *volatile next;	137	struct aio_cb *volatile next;
91		138
92	SV *data, *callback;	139	SV *callback;
93	SV *fh, *fh2;	140	SV *sv1, *sv2;
94	void *dataptr, *data2ptr;	141	void *ptr1, *ptr2;
95	Stat_t *statdata;
96	off_t offset;	142	off_t offs;
97	size_t length;	143	size_t size;
98	ssize_t result;	144	ssize_t result;
		145	double nv1, nv2;
99		146
100	STRLEN dataoffset;	147	STRLEN stroffset;
101	int type;	148	int type;
102	int fd, fd2;	149	int int1, int2, int3;
103	int errorno;	150	int errorno;
104	mode_t mode; /* open */	151	mode_t mode; /* open */
105		152
106	unsigned char flags;	153	unsigned char flags;
107	unsigned char pri;	154	unsigned char pri;
…		…
109	SV *self; /* the perl counterpart of this request, if any */	156	SV *self; /* the perl counterpart of this request, if any */
110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
111	} aio_cb;	158	} aio_cb;
112		159
113	enum {	160	enum {
114	FLAG_CANCELLED = 0x01,	161	FLAG_CANCELLED = 0x01, /* request was cancelled */
		162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
115	};	164	};
116		165
117	typedef aio_cb *aio_req;	166	typedef aio_cb *aio_req;
118	typedef aio_cb *aio_req_ornot;	167	typedef aio_cb *aio_req_ornot;
119		168
…		…
124	DEFAULT_PRI = 0,	173	DEFAULT_PRI = 0,
125	PRI_BIAS = -PRI_MIN,	174	PRI_BIAS = -PRI_MIN,
126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
127	};	176	};
128		177
		178	#define AIO_TICKS ((1000000 + 1023) >> 10)
		179
		180	static unsigned int max_poll_time = 0;
		181	static unsigned int max_poll_reqs = 0;
		182
		183	/* calculcate time difference in ~1/AIO_TICKS of a second */
		184	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		185	{
		186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		188	}
		189
		190	static thread_t main_tid;
		191	static int main_sig;
		192	static int block_sig_level;
		193
		194	void block_sig (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
129	static int next_pri = DEFAULT_PRI + PRI_BIAS;	224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
130		225
131	static int started, wanted;	226	static unsigned int started, idle, wanted;
132	static volatile int nreqs;
133	static int respipe [2];
134		227
135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
137	#else
138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
139	#endif
140
141	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
142	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
143
144	/* worker threasd management */	228	/* worker threads management */
145	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	229	static mutex_t wrklock = X_MUTEX_INIT;
146		230
147	typedef struct worker {	231	typedef struct worker {
148	/* locked by wrklock */	232	/* locked by wrklock */
149	struct worker *prev, *next;	233	struct worker *prev, *next;
150		234
151	pthread_t tid;	235	thread_t tid;
152		236
153	/* locked by reslock, reqlock or wrklock */	237	/* locked by reslock, reqlock or wrklock */
154	aio_req req; /* currently processed request */	238	aio_req req; /* currently processed request */
155	void *dbuf;	239	void *dbuf;
156	DIR *dirp;	240	DIR *dirp;
…		…
179	wrk->prev->next = wrk->next;	263	wrk->prev->next = wrk->next;
180		264
181	free (wrk);	265	free (wrk);
182	}	266	}
183		267
		268	static volatile unsigned int nreqs, nready, npending;
		269	static volatile unsigned int max_idle = 4;
		270	static volatile unsigned int max_outstanding = 0xffffffff;
		271	static int respipe_osf [2], respipe [2] = { -1, -1 };
		272
184	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	273	static mutex_t reslock = X_MUTEX_INIT;
185	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	274	static mutex_t reqlock = X_MUTEX_INIT;
186	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	275	static cond_t reqwait = X_COND_INIT;
		276
		277	#if WORDACCESS_UNSAFE
		278
		279	static unsigned int get_nready (void)
		280	{
		281	unsigned int retval;
		282
		283	X_LOCK (reqlock);
		284	retval = nready;
		285	X_UNLOCK (reqlock);
		286
		287	return retval;
		288	}
		289
		290	static unsigned int get_npending (void)
		291	{
		292	unsigned int retval;
		293
		294	X_LOCK (reslock);
		295	retval = npending;
		296	X_UNLOCK (reslock);
		297
		298	return retval;
		299	}
		300
		301	static unsigned int get_nthreads (void)
		302	{
		303	unsigned int retval;
		304
		305	X_LOCK (wrklock);
		306	retval = started;
		307	X_UNLOCK (wrklock);
		308
		309	return retval;
		310	}
		311
		312	#else
		313
		314	# define get_nready() nready
		315	# define get_npending() npending
		316	# define get_nthreads() started
		317
		318	#endif
187		319
188	/*	320	/*
189	* a somewhat faster data structure might be nice, but	321	* a somewhat faster data structure might be nice, but
190	* with 8 priorities this actually needs <20 insns	322	* with 8 priorities this actually needs <20 insns
191	* per shift, the most expensive operation.	323	* per shift, the most expensive operation.
…		…
237	}	369	}
238		370
239	abort ();	371	abort ();
240	}	372	}
241		373
242	static int poll_cb ();	374	static int poll_cb (void);
243	static void req_invoke (aio_req req);	375	static int req_invoke (aio_req req);
244	static void req_free (aio_req req);	376	static void req_destroy (aio_req req);
245	static void req_cancel (aio_req req);	377	static void req_cancel (aio_req req);
246		378
247	/* must be called at most once */	379	/* must be called at most once */
248	static SV *req_sv (aio_req req, const char *klass)	380	static SV *req_sv (aio_req req, const char *klass)
249	{	381	{
…		…
268	return mg ? (aio_req)mg->mg_ptr : 0;	400	return mg ? (aio_req)mg->mg_ptr : 0;
269	}	401	}
270		402
271	static void aio_grp_feed (aio_req grp)	403	static void aio_grp_feed (aio_req grp)
272	{	404	{
		405	block_sig ();
		406
273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
274	{	408	{
275	int old_len = grp->length;	409	int old_len = grp->size;
276		410
277	if (grp->fh2 && SvOK (grp->fh2))	411	if (grp->sv2 && SvOK (grp->sv2))
278	{	412	{
279	dSP;	413	dSP;
280		414
281	ENTER;	415	ENTER;
282	SAVETMPS;	416	SAVETMPS;
283	PUSHMARK (SP);	417	PUSHMARK (SP);
284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
285	PUTBACK;	419	PUTBACK;
286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
287	SPAGAIN;	421	SPAGAIN;
288	FREETMPS;	422	FREETMPS;
289	LEAVE;	423	LEAVE;
290	}	424	}
291		425
292	/* stop if no progress has been made */	426	/* stop if no progress has been made */
293	if (old_len == grp->length)	427	if (old_len == grp->size)
294	{	428	{
295	SvREFCNT_dec (grp->fh2);	429	SvREFCNT_dec (grp->sv2);
296	grp->fh2 = 0;	430	grp->sv2 = 0;
297	break;	431	break;
298	}	432	}
299	}	433	}
		434
		435	unblock_sig ();
300	}	436	}
301		437
302	static void aio_grp_dec (aio_req grp)	438	static void aio_grp_dec (aio_req grp)
303	{	439	{
304	--grp->length;	440	--grp->size;
305		441
306	/* call feeder, if applicable */	442	/* call feeder, if applicable */
307	aio_grp_feed (grp);	443	aio_grp_feed (grp);
308		444
309	/* finish, if done */	445	/* finish, if done */
310	if (!grp->length && grp->fd)	446	if (!grp->size && grp->int1)
311	{	447	{
		448	block_sig ();
		449
312	req_invoke (grp);	450	if (!req_invoke (grp))
		451	{
		452	req_destroy (grp);
		453	unblock_sig ();
		454	croak (0);
		455	}
		456
313	req_free (grp);	457	req_destroy (grp);
		458	unblock_sig ();
314	}	459	}
315	}	460	}
316		461
317	static void poll_wait ()
318	{
319	fd_set rfd;
320
321	while (nreqs)
322	{
323	int size;
324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
325	LOCK (reslock);
326	#endif
327	size = res_queue.size;
328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
329	UNLOCK (reslock);
330	#endif
331
332	if (size)
333	return;
334
335	FD_ZERO(&rfd);
336	FD_SET(respipe [0], &rfd);
337
338	select (respipe [0] + 1, &rfd, 0, 0, 0);
339	}
340	}
341
342	static void req_invoke (aio_req req)	462	static int req_invoke (aio_req req)
343	{	463	{
344	dSP;	464	dSP;
		465
		466	if (req->flags & FLAG_SV2_RO_OFF)
		467	SvREADONLY_off (req->sv2);
345		468
346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
347	{	470	{
348	errno = req->errorno;
349
350	ENTER;	471	ENTER;
351	SAVETMPS;	472	SAVETMPS;
352	PUSHMARK (SP);	473	PUSHMARK (SP);
353	EXTEND (SP, 1);	474	EXTEND (SP, 1);
354		475
…		…
359	SV *rv = &PL_sv_undef;	480	SV *rv = &PL_sv_undef;
360		481
361	if (req->result >= 0)	482	if (req->result >= 0)
362	{	483	{
363	int i;	484	int i;
364	char *buf = req->data2ptr;	485	char *buf = req->ptr2;
365	AV *av = newAV ();	486	AV *av = newAV ();
366		487
367	av_extend (av, req->result - 1);	488	av_extend (av, req->result - 1);
368		489
369	for (i = 0; i < req->result; ++i)	490	for (i = 0; i < req->result; ++i)
…		…
382	break;	503	break;
383		504
384	case REQ_OPEN:	505	case REQ_OPEN:
385	{	506	{
386	/* convert fd to fh */	507	/* convert fd to fh */
387	SV *fh;	508	SV *fh = &PL_sv_undef;
388		509
389	PUSHs (sv_2mortal (newSViv (req->result)));	510	if (req->result >= 0)
390	PUTBACK;	511	{
391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	512	GV *gv = (GV *)sv_newmortal ();
392	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);
393		519
394	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	);
395		527
		528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		529	fh = (SV *)gv;
		530	}
		531
396	PUSHMARK (SP);	532	PUSHs (fh);
397	XPUSHs (sv_2mortal (fh));
398	}	533	}
399	break;	534	break;
400		535
401	case REQ_GROUP:	536	case REQ_GROUP:
402	req->fd = 2; /* mark group as finished */	537	req->int1 = 2; /* mark group as finished */
403		538
404	if (req->data)	539	if (req->sv1)
405	{	540	{
406	int i;	541	int i;
407	AV *av = (AV *)req->data;	542	AV *av = (AV *)req->sv1;
408		543
409	EXTEND (SP, AvFILL (av) + 1);	544	EXTEND (SP, AvFILL (av) + 1);
410	for (i = 0; i <= AvFILL (av); ++i)	545	for (i = 0; i <= AvFILL (av); ++i)
411	PUSHs (*av_fetch (av, i, 0));	546	PUSHs (*av_fetch (av, i, 0));
412	}	547	}
…		…
414		549
415	case REQ_NOP:	550	case REQ_NOP:
416	case REQ_BUSY:	551	case REQ_BUSY:
417	break;	552	break;
418		553
		554	case REQ_READLINK:
		555	if (req->result > 0)
		556	{
		557	SvCUR_set (req->sv2, req->result);
		558	*SvEND (req->sv2) = 0;
		559	PUSHs (req->sv2);
		560	}
		561	break;
		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
		572	case REQ_READ:
		573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		574	*SvEND (req->sv2) = 0;
		575	PUSHs (sv_2mortal (newSViv (req->result)));
		576	break;
		577
419	default:	578	default:
420	PUSHs (sv_2mortal (newSViv (req->result)));	579	PUSHs (sv_2mortal (newSViv (req->result)));
421	break;	580	break;
422	}	581	}
423		582
		583	errno = req->errorno;
424		584
425	PUTBACK;	585	PUTBACK;
426	call_sv (req->callback, G_VOID | G_EVAL);	586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
427	SPAGAIN;	587	SPAGAIN;
428		588
429	FREETMPS;	589	FREETMPS;
430	LEAVE;	590	LEAVE;
		591
		592	PUTBACK;
431	}	593	}
432		594
433	if (req->grp)	595	if (req->grp)
434	{	596	{
435	aio_req grp = req->grp;	597	aio_req grp = req->grp;
…		…
442	grp->grp_first = req->grp_next;	604	grp->grp_first = req->grp_next;
443		605
444	aio_grp_dec (grp);	606	aio_grp_dec (grp);
445	}	607	}
446		608
447	if (SvTRUE (ERRSV))	609	return !SvTRUE (ERRSV);
448	{
449	req_free (req);
450	croak (0);
451	}
452	}	610	}
453		611
454	static void req_free (aio_req req)	612	static void req_destroy (aio_req req)
455	{	613	{
456	if (req->self)	614	if (req->self)
457	{	615	{
458	sv_unmagic (req->self, PERL_MAGIC_ext);	616	sv_unmagic (req->self, PERL_MAGIC_ext);
459	SvREFCNT_dec (req->self);	617	SvREFCNT_dec (req->self);
460	}	618	}
461		619
462	SvREFCNT_dec (req->data);
463	SvREFCNT_dec (req->fh);	620	SvREFCNT_dec (req->sv1);
464	SvREFCNT_dec (req->fh2);	621	SvREFCNT_dec (req->sv2);
465	SvREFCNT_dec (req->callback);	622	SvREFCNT_dec (req->callback);
466	Safefree (req->statdata);
467		623
468	if (req->type == REQ_READDIR)	624	if (req->flags & FLAG_PTR2_FREE)
469	free (req->data2ptr);	625	free (req->ptr2);
470		626
471	Safefree (req);	627	Safefree (req);
472	}	628	}
473		629
474	static void req_cancel_subs (aio_req grp)	630	static void req_cancel_subs (aio_req grp)
…		…
476	aio_req sub;	632	aio_req sub;
477		633
478	if (grp->type != REQ_GROUP)	634	if (grp->type != REQ_GROUP)
479	return;	635	return;
480		636
481	SvREFCNT_dec (grp->fh2);	637	SvREFCNT_dec (grp->sv2);
482	grp->fh2 = 0;	638	grp->sv2 = 0;
483		639
484	for (sub = grp->grp_first; sub; sub = sub->grp_next)	640	for (sub = grp->grp_first; sub; sub = sub->grp_next)
485	req_cancel (sub);	641	req_cancel (sub);
486	}	642	}
487		643
…		…
490	req->flags |= FLAG_CANCELLED;	646	req->flags |= FLAG_CANCELLED;
491		647
492	req_cancel_subs (req);	648	req_cancel_subs (req);
493	}	649	}
494		650
495	static int poll_cb ()	651	#ifdef USE_SOCKETS_AS_HANDLES
496	{	652	# define TO_SOCKET(x) (win32_get_osfhandle (x))
497	dSP;	653	#else
498	int count = 0;	654	# define TO_SOCKET(x) (x)
499	int do_croak = 0;	655	#endif
500	aio_req req;
501		656
502	for (;;)	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)
503	{	673	{
504	LOCK (reslock);	674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
505	req = reqq_shift (&res_queue);	675	croak ("unable to initialize result pipe(2)");
506		676
507	if (req)	677	respipe_close (respipe [0]);
508	{	678	respipe [0] = old_readfd;
509	if (!res_queue.size)
510	{
511	/* read any signals sent by the worker threads */
512	char buf [32];
513	while (read (respipe [0], buf, 32) == 32)
514	;
515	}
516	}
517
518	UNLOCK (reslock);
519
520	if (!req)
521	break;
522
523	--nreqs;
524
525	if (req->type == REQ_QUIT)
526	started--;
527	else if (req->type == REQ_GROUP && req->length)
528	{
529	req->fd = 1; /* mark request as delayed */
530	continue;
531	}
532	else
533	{
534	if (req->type == REQ_READ)
535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
536
537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
538	SvREADONLY_off (req->data);
539
540	if (req->statdata)
541	{
542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
543	PL_laststatval = req->result;
544	PL_statcache = *(req->statdata);
545	}
546
547	req_invoke (req);
548
549	count++;
550	}
551
552	req_free (req);
553	}	679	}
554		680
555	return count;	681	#ifdef _WIN32
556	}	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)");
557		690
558	static void *aio_proc(void *arg);	691	respipe_osf [0] = TO_SOCKET (respipe [0]);
		692	respipe_osf [1] = TO_SOCKET (respipe [1]);
		693	}
		694
		695	X_THREAD_PROC (aio_proc);
559		696
560	static void start_thread (void)	697	static void start_thread (void)
561	{	698	{
562	sigset_t fullsigset, oldsigset;
563	pthread_attr_t attr;
564
565	worker *wrk = calloc (1, sizeof (worker));	699	worker *wrk = calloc (1, sizeof (worker));
566		700
567	if (!wrk)	701	if (!wrk)
568	croak ("unable to allocate worker thread data");	702	croak ("unable to allocate worker thread data");
569		703
570	pthread_attr_init (&attr);
571	pthread_attr_setstacksize (&attr, STACKSIZE);
572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
573
574	sigfillset (&fullsigset);
575
576	LOCK (wrklock);	704	X_LOCK (wrklock);
577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
578		705
579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
580	{	707	{
581	wrk->prev = &wrk_first;	708	wrk->prev = &wrk_first;
582	wrk->next = wrk_first.next;	709	wrk->next = wrk_first.next;
583	wrk_first.next->prev = wrk;	710	wrk_first.next->prev = wrk;
584	wrk_first.next = wrk;	711	wrk_first.next = wrk;
585	started++;	712	++started;
586	}	713	}
587	else	714	else
588	free (wrk);	715	free (wrk);
589		716
590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
591	UNLOCK (wrklock);	717	X_UNLOCK (wrklock);
		718	}
		719
		720	static void maybe_start_thread (void)
		721	{
		722	if (get_nthreads () >= wanted)
		723	return;
		724
		725	/* todo: maybe use idle here, but might be less exact */
		726	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		727	return;
		728
		729	start_thread ();
592	}	730	}
593		731
594	static void req_send (aio_req req)	732	static void req_send (aio_req req)
595	{	733	{
596	while (started < wanted && nreqs >= started)	734	block_sig ();
597	start_thread ();
598		735
599	++nreqs;	736	++nreqs;
600		737
601	LOCK (reqlock);	738	X_LOCK (reqlock);
		739	++nready;
602	reqq_push (&req_queue, req);	740	reqq_push (&req_queue, req);
603	pthread_cond_signal (&reqwait);	741	X_COND_SIGNAL (reqwait);
604	UNLOCK (reqlock);	742	X_UNLOCK (reqlock);
		743
		744	unblock_sig ();
		745
		746	maybe_start_thread ();
605	}	747	}
606		748
607	static void end_thread (void)	749	static void end_thread (void)
608	{	750	{
609	aio_req req;	751	aio_req req;
…		…
611	Newz (0, req, 1, aio_cb);	753	Newz (0, req, 1, aio_cb);
612		754
613	req->type = REQ_QUIT;	755	req->type = REQ_QUIT;
614	req->pri = PRI_MAX + PRI_BIAS;	756	req->pri = PRI_MAX + PRI_BIAS;
615		757
616	req_send (req);	758	X_LOCK (reqlock);
		759	reqq_push (&req_queue, req);
		760	X_COND_SIGNAL (reqwait);
		761	X_UNLOCK (reqlock);
		762
		763	X_LOCK (wrklock);
		764	--started;
		765	X_UNLOCK (wrklock);
		766	}
		767
		768	static void set_max_idle (int nthreads)
		769	{
		770	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		771	max_idle = nthreads <= 0 ? 1 : nthreads;
		772	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
617	}	773	}
618		774
619	static void min_parallel (int nthreads)	775	static void min_parallel (int nthreads)
620	{	776	{
621	if (wanted < nthreads)	777	if (wanted < nthreads)
622	wanted = nthreads;	778	wanted = nthreads;
623	}	779	}
624		780
625	static void max_parallel (int nthreads)	781	static void max_parallel (int nthreads)
626	{	782	{
627	int cur = started;
628
629	if (wanted > nthreads)	783	if (wanted > nthreads)
630	wanted = nthreads;	784	wanted = nthreads;
631		785
632	while (cur > wanted)	786	while (started > wanted)
		787	end_thread ();
		788	}
		789
		790	static void poll_wait (void)
		791	{
		792	fd_set rfd;
		793
		794	while (nreqs)
633	{	795	{
		796	int size;
		797	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		798	size = res_queue.size;
		799	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		800
		801	if (size)
		802	return;
		803
634	end_thread ();	804	maybe_start_thread ();
635	cur--;	805
		806	FD_ZERO (&rfd);
		807	FD_SET (respipe [0], &rfd);
		808
		809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
636	}	810	}
		811	}
637		812
638	while (started > wanted)	813	static int poll_cb (void)
		814	{
		815	dSP;
		816	int count = 0;
		817	int maxreqs = max_poll_reqs;
		818	int do_croak = 0;
		819	struct timeval tv_start, tv_now;
		820	aio_req req;
		821
		822	if (max_poll_time)
		823	gettimeofday (&tv_start, 0);
		824
		825	block_sig ();
		826
		827	for (;;)
639	{	828	{
		829	for (;;)
		830	{
		831	maybe_start_thread ();
		832
		833	X_LOCK (reslock);
		834	req = reqq_shift (&res_queue);
		835
		836	if (req)
		837	{
		838	--npending;
		839
		840	if (!res_queue.size)
		841	{
		842	/* read any signals sent by the worker threads */
		843	char buf [4];
		844	while (respipe_read (respipe [0], buf, 4) == 4)
		845	;
		846	}
		847	}
		848
		849	X_UNLOCK (reslock);
		850
		851	if (!req)
		852	break;
		853
		854	--nreqs;
		855
		856	if (req->type == REQ_GROUP && req->size)
		857	{
		858	req->int1 = 1; /* mark request as delayed */
		859	continue;
		860	}
		861	else
		862	{
		863	if (!req_invoke (req))
		864	{
		865	req_destroy (req);
		866	unblock_sig ();
		867	croak (0);
		868	}
		869
		870	count++;
		871	}
		872
		873	req_destroy (req);
		874
		875	if (maxreqs && !--maxreqs)
		876	break;
		877
		878	if (max_poll_time)
		879	{
		880	gettimeofday (&tv_now, 0);
		881
		882	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		883	break;
		884	}
		885	}
		886
		887	if (nreqs <= max_outstanding)
		888	break;
		889
640	poll_wait ();	890	poll_wait ();
641	poll_cb ();	891
		892	++maxreqs;
642	}	893	}
643	}
644		894
645	static void create_pipe ()	895	unblock_sig ();
646	{	896	return count;
647	if (pipe (respipe))
648	croak ("unable to initialize result pipe");
649
650	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
651	croak ("cannot set result pipe to nonblocking mode");
652
653	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
654	croak ("cannot set result pipe to nonblocking mode");
655	}	897	}
656		898
657	/*****************************************************************************/	899	/*****************************************************************************/
658	/* work around various missing functions */	900	/* work around various missing functions */
659		901
…		…
664	/*	906	/*
665	* make our pread/pwrite safe against themselves, but not against	907	* make our pread/pwrite safe against themselves, but not against
666	* 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,
667	* but that's your problem, not mine.	909	* but that's your problem, not mine.
668	*/	910	*/
669	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	911	static mutex_t preadwritelock = X_MUTEX_INIT;
670		912
671	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)
672	{	914	{
673	ssize_t res;	915	ssize_t res;
674	off_t ooffset;	916	off_t ooffset;
675		917
676	LOCK (preadwritelock);	918	X_LOCK (preadwritelock);
677	ooffset = lseek (fd, 0, SEEK_CUR);	919	ooffset = lseek (fd, 0, SEEK_CUR);
678	lseek (fd, offset, SEEK_SET);	920	lseek (fd, offset, SEEK_SET);
679	res = read (fd, buf, count);	921	res = read (fd, buf, count);
680	lseek (fd, ooffset, SEEK_SET);	922	lseek (fd, ooffset, SEEK_SET);
681	UNLOCK (preadwritelock);	923	X_UNLOCK (preadwritelock);
682		924
683	return res;	925	return res;
684	}	926	}
685		927
686	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)
687	{	929	{
688	ssize_t res;	930	ssize_t res;
689	off_t ooffset;	931	off_t ooffset;
690		932
691	LOCK (preadwritelock);	933	X_LOCK (preadwritelock);
692	ooffset = lseek (fd, 0, SEEK_CUR);	934	ooffset = lseek (fd, 0, SEEK_CUR);
693	lseek (fd, offset, SEEK_SET);	935	lseek (fd, offset, SEEK_SET);
694	res = write (fd, buf, count);	936	res = write (fd, buf, count);
695	lseek (fd, offset, SEEK_SET);	937	lseek (fd, offset, SEEK_SET);
696	UNLOCK (preadwritelock);	938	X_UNLOCK (preadwritelock);
697		939
698	return res;	940	return res;
699	}	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
700	#endif	970	#endif
701		971
702	#if !HAVE_FDATASYNC	972	#if !HAVE_FDATASYNC
703	# define fdatasync fsync	973	# define fdatasync fsync
704	#endif	974	#endif
705		975
706	#if !HAVE_READAHEAD	976	#if !HAVE_READAHEAD
707	# define readahead aio_readahead	977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
708		978
709	static ssize_t readahead (int fd, off_t offset, size_t count)	979	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
710	{	980	{
		981	size_t todo = count;
711	dBUF;	982	dBUF;
712		983
713	while (count > 0)	984	while (todo > 0)
714	{	985	{
715	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
716		987
717	pread (fd, aio_buf, len, offset);	988	pread (fd, aio_buf, len, offset);
718	offset += len;	989	offset += len;
719	count -= len;	990	todo -= len;
720	}	991	}
721		992
722	errno = 0;	993	errno = 0;
		994	return count;
723	}	995	}
		996
724	#endif	997	#endif
725		998
726	#if !HAVE_READDIR_R	999	#if !HAVE_READDIR_R
727	# define readdir_r aio_readdir_r	1000	# define readdir_r aio_readdir_r
728		1001
729	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1002	static mutex_t readdirlock = X_MUTEX_INIT;
730		1003
731	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)
732	{	1005	{
733	struct dirent *e;	1006	X_DIRENT *e;
734	int errorno;	1007	int errorno;
735		1008
736	LOCK (readdirlock);	1009	X_LOCK (readdirlock);
737		1010
738	e = readdir (dirp);	1011	e = readdir (dirp);
739	errorno = errno;	1012	errorno = errno;
740		1013
741	if (e)	1014	if (e)
…		…
744	strcpy (ent->d_name, e->d_name);	1017	strcpy (ent->d_name, e->d_name);
745	}	1018	}
746	else	1019	else
747	*res = 0;	1020	*res = 0;
748		1021
749	UNLOCK (readdirlock);	1022	X_UNLOCK (readdirlock);
750		1023
751	errno = errorno;	1024	errno = errorno;
752	return e ? 0 : -1;	1025	return e ? 0 : -1;
753	}	1026	}
754	#endif	1027	#endif
…		…
773	{	1046	{
774	off_t sbytes;	1047	off_t sbytes;
775	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
776		1049
777	if (res < 0 && sbytes)	1050	if (res < 0 && sbytes)
778	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
779	res = sbytes;	1052	res = sbytes;
780	}	1053	}
781		1054
782	# elif __hpux	1055	# elif __hpux
783	res = sendfile (ofd, ifd, offset, count, 0, 0);	1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
850	static void scandir_ (aio_req req, worker *self)	1123	static void scandir_ (aio_req req, worker *self)
851	{	1124	{
852	DIR *dirp;	1125	DIR *dirp;
853	union	1126	union
854	{	1127	{
855	struct dirent d;	1128	X_DIRENT d;
856	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
857	} *u;	1130	} *u;
858	struct dirent *entp;	1131	X_DIRENT *entp;
859	char *name, *names;	1132	char *name, *names;
860	int memlen = 4096;	1133	int memlen = 4096;
861	int memofs = 0;	1134	int memofs = 0;
862	int res = 0;	1135	int res = 0;
863	int errorno;
864		1136
865	LOCK (wrklock);	1137	X_LOCK (wrklock);
866	self->dirp = dirp = opendir (req->dataptr);	1138	self->dirp = dirp = opendir (req->ptr1);
867	self->dbuf = u = malloc (sizeof (*u));	1139	self->dbuf = u = malloc (sizeof (*u));
		1140	req->flags |= FLAG_PTR2_FREE;
		1141	req->ptr2 = names = malloc (memlen);
868	UNLOCK (wrklock);	1142	X_UNLOCK (wrklock);
869
870	req->data2ptr = names = malloc (memlen);
871		1143
872	if (dirp && u && names)	1144	if (dirp && u && names)
873	for (;;)	1145	for (;;)
874	{	1146	{
875	errno = 0;	1147	errno = 0;
…		…
887	res++;	1159	res++;
888		1160
889	while (memofs + len > memlen)	1161	while (memofs + len > memlen)
890	{	1162	{
891	memlen *= 2;	1163	memlen *= 2;
892	LOCK (wrklock);	1164	X_LOCK (wrklock);
893	req->data2ptr = names = realloc (names, memlen);	1165	req->ptr2 = names = realloc (names, memlen);
894	UNLOCK (wrklock);	1166	X_UNLOCK (wrklock);
895		1167
896	if (!names)	1168	if (!names)
897	break;	1169	break;
898	}	1170	}
899		1171
…		…
908	req->result = res;	1180	req->result = res;
909	}	1181	}
910		1182
911	/*****************************************************************************/	1183	/*****************************************************************************/
912		1184
913	static void *aio_proc (void *thr_arg)	1185	X_THREAD_PROC (aio_proc)
914	{	1186	{
915	aio_req req;	1187	aio_req req;
916	int type;	1188	struct timespec ts;
917	worker *self = (worker *)thr_arg;	1189	worker *self = (worker *)thr_arg;
918		1190
919	do	1191	/* try to distribute timeouts somewhat randomly */
		1192	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
		1193
		1194	for (;;)
920	{	1195	{
		1196	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1197
921	LOCK (reqlock);	1198	X_LOCK (reqlock);
922		1199
923	for (;;)	1200	for (;;)
924	{	1201	{
925	self->req = req = reqq_shift (&req_queue);	1202	self->req = req = reqq_shift (&req_queue);
926		1203
927	if (req)	1204	if (req)
928	break;	1205	break;
929		1206
930	pthread_cond_wait (&reqwait, &reqlock);	1207	++idle;
		1208
		1209	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1210	== ETIMEDOUT)
		1211	{
		1212	if (idle > max_idle)
		1213	{
		1214	--idle;
		1215	X_UNLOCK (reqlock);
		1216	X_LOCK (wrklock);
		1217	--started;
		1218	X_UNLOCK (wrklock);
		1219	goto quit;
		1220	}
		1221
		1222	/* we are allowed to idle, so do so without any timeout */
		1223	X_COND_WAIT (reqwait, reqlock);
		1224	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1225	}
		1226
		1227	--idle;
931	}	1228	}
932		1229
		1230	--nready;
		1231
933	UNLOCK (reqlock);	1232	X_UNLOCK (reqlock);
934		1233
935	errno = 0; /* strictly unnecessary */	1234	errno = 0; /* strictly unnecessary */
936	type = req->type; /* remember type for QUIT check */
937		1235
938	if (!(req->flags & FLAG_CANCELLED))	1236	if (!(req->flags & FLAG_CANCELLED))
939	switch (type)	1237	switch (req->type)
940	{	1238	{
941	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1239	case REQ_READ: req->result = req->offs >= 0
942	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1240	? pread (req->int1, req->ptr1, req->size, req->offs)
		1241	: read (req->int1, req->ptr1, req->size); break;
		1242	case REQ_WRITE: req->result = req->offs >= 0
		1243	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1244	: write (req->int1, req->ptr1, req->size); break;
943		1245
944	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1246	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
945	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;	1247	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
946		1248
947	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1249	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
948	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1250	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
949	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1251	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
950		1252
		1253	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1254	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1255	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1256	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1257	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1258	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1259
951	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1260	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
952	case REQ_CLOSE: req->result = close (req->fd); break;	1261	case REQ_CLOSE: req->result = close (req->int1); break;
953	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1262	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
954	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1263	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1264	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
955	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1265	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
956	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1266	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
957	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1267	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1268	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1269	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
958		1270
959	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1271	case REQ_SYNC: req->result = 0; sync (); break;
960	case REQ_FSYNC: req->result = fsync (req->fd); break;	1272	case REQ_FSYNC: req->result = fsync (req->int1); break;
		1273	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
		1274
961	case REQ_READDIR: scandir_ (req, self); break;	1275	case REQ_READDIR: scandir_ (req, self); break;
962		1276
963	case REQ_BUSY:	1277	case REQ_BUSY:
		1278	#ifdef _WIN32
		1279	Sleep (req->nv1 * 1000.);
		1280	#else
964	{	1281	{
965	struct timeval tv;	1282	struct timeval tv;
966		1283
967	tv.tv_sec = req->fd;	1284	tv.tv_sec = req->nv1;
968	tv.tv_usec = req->fd2;	1285	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
969		1286
970	req->result = select (0, 0, 0, 0, &tv);	1287	req->result = select (0, 0, 0, 0, &tv);
971	}	1288	}
		1289	#endif
		1290	break;
		1291
		1292	case REQ_UTIME:
		1293	case REQ_FUTIME:
		1294	{
		1295	struct timeval tv[2];
		1296	struct timeval *times;
		1297
		1298	if (req->nv1 != -1. || req->nv2 != -1.)
		1299	{
		1300	tv[0].tv_sec = req->nv1;
		1301	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1302	tv[1].tv_sec = req->nv2;
		1303	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1304
		1305	times = tv;
		1306	}
		1307	else
		1308	times = 0;
		1309
		1310
		1311	req->result = req->type == REQ_FUTIME
		1312	? futimes (req->int1, times)
		1313	: utimes (req->ptr1, times);
		1314	}
972		1315
973	case REQ_GROUP:	1316	case REQ_GROUP:
974	case REQ_NOP:	1317	case REQ_NOP:
		1318	break;
		1319
975	case REQ_QUIT:	1320	case REQ_QUIT:
976	break;	1321	goto quit;
977		1322
978	default:	1323	default:
979	req->result = ENOSYS;	1324	req->result = -1;
980	break;	1325	break;
981	}	1326	}
982		1327
983	req->errorno = errno;	1328	req->errorno = errno;
984		1329
985	LOCK (reslock);	1330	X_LOCK (reslock);
		1331
		1332	++npending;
986		1333
987	if (!reqq_push (&res_queue, req))	1334	if (!reqq_push (&res_queue, req))
		1335	{
988	/* write a dummy byte to the pipe so fh becomes ready */	1336	/* write a dummy byte to the pipe so fh becomes ready */
989	write (respipe [1], &respipe, 1);	1337	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		1338
		1339	/* optionally signal the main thread asynchronously */
		1340	if (main_sig)
		1341	pthread_kill (main_tid, main_sig);
		1342	}
990		1343
991	self->req = 0;	1344	self->req = 0;
992	worker_clear (self);	1345	worker_clear (self);
993		1346
994	UNLOCK (reslock);	1347	X_UNLOCK (reslock);
995	}	1348	}
996	while (type != REQ_QUIT);
997		1349
		1350	quit:
998	LOCK (wrklock);	1351	X_LOCK (wrklock);
999	worker_free (self);	1352	worker_free (self);
1000	UNLOCK (wrklock);	1353	X_UNLOCK (wrklock);
1001		1354
1002	return 0;	1355	return 0;
1003	}	1356	}
1004		1357
1005	/*****************************************************************************/	1358	/*****************************************************************************/
1006		1359
1007	static void atfork_prepare (void)	1360	static void atfork_prepare (void)
1008	{	1361	{
1009	LOCK (wrklock);	1362	X_LOCK (wrklock);
1010	LOCK (reqlock);	1363	X_LOCK (reqlock);
1011	LOCK (reslock);	1364	X_LOCK (reslock);
1012	#if !HAVE_PREADWRITE	1365	#if !HAVE_PREADWRITE
1013	LOCK (preadwritelock);	1366	X_LOCK (preadwritelock);
1014	#endif	1367	#endif
1015	#if !HAVE_READDIR_R	1368	#if !HAVE_READDIR_R
1016	LOCK (readdirlock);	1369	X_LOCK (readdirlock);
1017	#endif	1370	#endif
1018	}	1371	}
1019		1372
1020	static void atfork_parent (void)	1373	static void atfork_parent (void)
1021	{	1374	{
1022	#if !HAVE_READDIR_R	1375	#if !HAVE_READDIR_R
1023	UNLOCK (readdirlock);	1376	X_UNLOCK (readdirlock);
1024	#endif	1377	#endif
1025	#if !HAVE_PREADWRITE	1378	#if !HAVE_PREADWRITE
1026	UNLOCK (preadwritelock);	1379	X_UNLOCK (preadwritelock);
1027	#endif	1380	#endif
1028	UNLOCK (reslock);	1381	X_UNLOCK (reslock);
1029	UNLOCK (reqlock);	1382	X_UNLOCK (reqlock);
1030	UNLOCK (wrklock);	1383	X_UNLOCK (wrklock);
1031	}	1384	}
1032		1385
1033	static void atfork_child (void)	1386	static void atfork_child (void)
1034	{	1387	{
1035	aio_req prv;	1388	aio_req prv;
1036		1389
1037	while (prv = reqq_shift (&req_queue))	1390	while (prv = reqq_shift (&req_queue))
1038	req_free (prv);	1391	req_destroy (prv);
1039		1392
1040	while (prv = reqq_shift (&res_queue))	1393	while (prv = reqq_shift (&res_queue))
1041	req_free (prv);	1394	req_destroy (prv);
1042		1395
1043	while (wrk_first.next != &wrk_first)	1396	while (wrk_first.next != &wrk_first)
1044	{	1397	{
1045	worker *wrk = wrk_first.next;	1398	worker *wrk = wrk_first.next;
1046		1399
1047	if (wrk->req)	1400	if (wrk->req)
1048	req_free (wrk->req);	1401	req_destroy (wrk->req);
1049		1402
1050	worker_clear (wrk);	1403	worker_clear (wrk);
1051	worker_free (wrk);	1404	worker_free (wrk);
1052	}	1405	}
1053		1406
1054	started = 0;	1407	started = 0;
		1408	idle = 0;
1055	nreqs = 0;	1409	nreqs = 0;
		1410	nready = 0;
		1411	npending = 0;
1056		1412
1057	close (respipe [0]);
1058	close (respipe [1]);
1059	create_pipe ();	1413	create_respipe ();
1060		1414
1061	atfork_parent ();	1415	atfork_parent ();
1062	}	1416	}
1063		1417
1064	#define dREQ \	1418	#define dREQ \
…		…
1086		1440
1087	PROTOTYPES: ENABLE	1441	PROTOTYPES: ENABLE
1088		1442
1089	BOOT:	1443	BOOT:
1090	{	1444	{
1091	HV *stash = gv_stashpv ("IO::AIO", 1);	1445	stash = gv_stashpv ("IO::AIO", 1);
		1446
1092	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1093	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1094	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1452	#ifdef _WIN32
		1453	X_MUTEX_CHECK (wrklock);
		1454	X_MUTEX_CHECK (reslock);
		1455	X_MUTEX_CHECK (reqlock);
		1456	X_MUTEX_CHECK (reqwait);
		1457	X_MUTEX_CHECK (preadwritelock);
		1458	X_MUTEX_CHECK (readdirlock);
1095		1459
1096	create_pipe ();	1460	X_COND_CHECK (reqwait);
		1461	#else
		1462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1463	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1464	#endif
		1465
		1466	create_respipe ();
		1467
1097	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1468	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1098	}	1469	}
1099		1470
1100	void	1471	void
1101	min_parallel (nthreads)	1472	max_poll_reqs (int nreqs)
1102	int nthreads
1103	PROTOTYPE: $	1473	PROTOTYPE: $
		1474	CODE:
		1475	max_poll_reqs = nreqs;
1104		1476
1105	void	1477	void
1106	max_parallel (nthreads)	1478	max_poll_time (double nseconds)
1107	int nthreads
1108	PROTOTYPE: $	1479	PROTOTYPE: $
		1480	CODE:
		1481	max_poll_time = nseconds * AIO_TICKS;
1109		1482
1110	void	1483	void
		1484	min_parallel (int nthreads)
		1485	PROTOTYPE: $
		1486
		1487	void
		1488	max_parallel (int nthreads)
		1489	PROTOTYPE: $
		1490
		1491	void
		1492	max_idle (int nthreads)
		1493	PROTOTYPE: $
		1494	CODE:
		1495	set_max_idle (nthreads);
		1496
		1497	int
		1498	max_outstanding (int maxreqs)
		1499	PROTOTYPE: $
		1500	CODE:
		1501	RETVAL = max_outstanding;
		1502	max_outstanding = maxreqs;
		1503	OUTPUT:
		1504	RETVAL
		1505
		1506	void
1111	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1507	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1112	SV * pathname
1113	int flags
1114	int mode
1115	SV * callback
1116	PROTOTYPE: $$$;$	1508	PROTOTYPE: $$$;$
1117	PPCODE:	1509	PPCODE:
1118	{	1510	{
1119	dREQ;	1511	dREQ;
1120		1512
1121	req->type = REQ_OPEN;	1513	req->type = REQ_OPEN;
1122	req->data = newSVsv (pathname);	1514	req->sv1 = newSVsv (pathname);
1123	req->dataptr = SvPVbyte_nolen (req->data);	1515	req->ptr1 = SvPVbyte_nolen (req->sv1);
1124	req->fd = flags;	1516	req->int1 = flags;
1125	req->mode = mode;	1517	req->mode = mode;
1126		1518
1127	REQ_SEND;	1519	REQ_SEND;
1128	}	1520	}
1129		1521
1130	void	1522	void
1131	aio_close (fh,callback=&PL_sv_undef)	1523	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1132	SV * fh
1133	SV * callback
1134	PROTOTYPE: $;$	1524	PROTOTYPE: $;$
1135	ALIAS:	1525	ALIAS:
1136	aio_close = REQ_CLOSE
1137	aio_fsync = REQ_FSYNC	1526	aio_fsync = REQ_FSYNC
1138	aio_fdatasync = REQ_FDATASYNC	1527	aio_fdatasync = REQ_FDATASYNC
1139	PPCODE:	1528	PPCODE:
1140	{	1529	{
1141	dREQ;	1530	dREQ;
1142		1531
1143	req->type = ix;	1532	req->type = ix;
1144	req->fh = newSVsv (fh);	1533	req->sv1 = newSVsv (fh);
1145	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1534	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1146		1535
1147	REQ_SEND (req);	1536	REQ_SEND (req);
1148	}	1537	}
1149		1538
		1539	int
		1540	_dup (int fd)
		1541	PROTOTYPE: $
		1542	CODE:
		1543	RETVAL = dup (fd);
		1544	OUTPUT:
		1545	RETVAL
		1546
1150	void	1547	void
		1548	_aio_close (int fd, SV *callback=&PL_sv_undef)
		1549	PROTOTYPE: $;$
		1550	PPCODE:
		1551	{
		1552	dREQ;
		1553
		1554	req->type = REQ_CLOSE;
		1555	req->int1 = fd;
		1556
		1557	REQ_SEND (req);
		1558	}
		1559
		1560	void
1151	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1561	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1152	SV * fh
1153	UV offset
1154	UV length
1155	SV * data
1156	UV dataoffset
1157	SV * callback
1158	ALIAS:	1562	ALIAS:
1159	aio_read = REQ_READ	1563	aio_read = REQ_READ
1160	aio_write = REQ_WRITE	1564	aio_write = REQ_WRITE
1161	PROTOTYPE: $$$$$;$	1565	PROTOTYPE: $$$$$;$
1162	PPCODE:	1566	PPCODE:
1163	{	1567	{
1164	aio_req req;
1165	STRLEN svlen;	1568	STRLEN svlen;
1166	char *svptr = SvPVbyte (data, svlen);	1569	char *svptr = SvPVbyte (data, svlen);
		1570	UV len = SvUV (length);
1167		1571
1168	SvUPGRADE (data, SVt_PV);	1572	SvUPGRADE (data, SVt_PV);
1169	SvPOK_on (data);	1573	SvPOK_on (data);
1170		1574
1171	if (dataoffset < 0)	1575	if (dataoffset < 0)
1172	dataoffset += svlen;	1576	dataoffset += svlen;
1173		1577
1174	if (dataoffset < 0 || dataoffset > svlen)	1578	if (dataoffset < 0 || dataoffset > svlen)
1175	croak ("data offset outside of string");	1579	croak ("dataoffset outside of data scalar");
1176		1580
1177	if (ix == REQ_WRITE)	1581	if (ix == REQ_WRITE)
1178	{	1582	{
1179	/* write: check length and adjust. */	1583	/* write: check length and adjust. */
1180	if (length < 0 || length + dataoffset > svlen)	1584	if (!SvOK (length) || len + dataoffset > svlen)
1181	length = svlen - dataoffset;	1585	len = svlen - dataoffset;
1182	}	1586	}
1183	else	1587	else
1184	{	1588	{
1185	/* read: grow scalar as necessary */	1589	/* read: grow scalar as necessary */
1186	svptr = SvGROW (data, length + dataoffset);	1590	svptr = SvGROW (data, len + dataoffset + 1);
1187	}	1591	}
1188		1592
1189	if (length < 0)	1593	if (len < 0)
1190	croak ("length must not be negative");	1594	croak ("length must not be negative");
1191		1595
1192	{	1596	{
1193	dREQ;	1597	dREQ;
1194		1598
1195	req->type = ix;	1599	req->type = ix;
1196	req->fh = newSVsv (fh);	1600	req->sv1 = newSVsv (fh);
1197	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1601	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1198	: IoOFP (sv_2io (fh)));	1602	: IoOFP (sv_2io (fh)));
		1603	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1199	req->offset = offset;	1604	req->size = len;
1200	req->length = length;
1201	req->data = SvREFCNT_inc (data);	1605	req->sv2 = SvREFCNT_inc (data);
1202	req->dataptr = (char *)svptr + dataoffset;	1606	req->ptr1 = (char *)svptr + dataoffset;
		1607	req->stroffset = dataoffset;
1203		1608
1204	if (!SvREADONLY (data))	1609	if (!SvREADONLY (data))
1205	{	1610	{
1206	SvREADONLY_on (data);	1611	SvREADONLY_on (data);
1207	req->data2ptr = (void *)data;	1612	req->flags |= FLAG_SV2_RO_OFF;
1208	}	1613	}
1209		1614
1210	REQ_SEND;	1615	REQ_SEND;
1211	}	1616	}
1212	}	1617	}
1213		1618
1214	void	1619	void
		1620	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1621	PROTOTYPE: $$;$
		1622	PPCODE:
		1623	{
		1624	SV *data;
		1625	dREQ;
		1626
		1627	data = newSV (NAME_MAX);
		1628	SvPOK_on (data);
		1629
		1630	req->type = REQ_READLINK;
		1631	req->sv1 = newSVsv (path);
		1632	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1633	req->sv2 = data;
		1634	req->ptr1 = SvPVbyte_nolen (data);
		1635
		1636	REQ_SEND;
		1637	}
		1638
		1639	void
1215	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1640	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1216	SV * out_fh
1217	SV * in_fh
1218	UV in_offset
1219	UV length
1220	SV * callback
1221	PROTOTYPE: $$$$;$	1641	PROTOTYPE: $$$$;$
1222	PPCODE:	1642	PPCODE:
1223	{	1643	{
1224	dREQ;	1644	dREQ;
1225		1645
1226	req->type = REQ_SENDFILE;	1646	req->type = REQ_SENDFILE;
1227	req->fh = newSVsv (out_fh);	1647	req->sv1 = newSVsv (out_fh);
1228	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1648	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1229	req->fh2 = newSVsv (in_fh);	1649	req->sv2 = newSVsv (in_fh);
1230	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1650	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1231	req->offset = in_offset;	1651	req->offs = SvVAL64 (in_offset);
1232	req->length = length;	1652	req->size = length;
1233		1653
1234	REQ_SEND;	1654	REQ_SEND;
1235	}	1655	}
1236		1656
1237	void	1657	void
1238	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1658	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1239	SV * fh
1240	UV offset
1241	IV length
1242	SV * callback
1243	PROTOTYPE: $$$;$	1659	PROTOTYPE: $$$;$
1244	PPCODE:	1660	PPCODE:
1245	{	1661	{
1246	dREQ;	1662	dREQ;
1247		1663
1248	req->type = REQ_READAHEAD;	1664	req->type = REQ_READAHEAD;
1249	req->fh = newSVsv (fh);	1665	req->sv1 = newSVsv (fh);
1250	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1666	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1251	req->offset = offset;	1667	req->offs = SvVAL64 (offset);
1252	req->length = length;	1668	req->size = length;
1253		1669
1254	REQ_SEND;	1670	REQ_SEND;
1255	}	1671	}
1256		1672
1257	void	1673	void
1258	aio_stat (fh_or_path,callback=&PL_sv_undef)	1674	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1259	SV * fh_or_path
1260	SV * callback
1261	ALIAS:	1675	ALIAS:
1262	aio_stat = REQ_STAT	1676	aio_stat = REQ_STAT
1263	aio_lstat = REQ_LSTAT	1677	aio_lstat = REQ_LSTAT
1264	PPCODE:	1678	PPCODE:
1265	{	1679	{
1266	dREQ;	1680	dREQ;
1267		1681
1268	New (0, req->statdata, 1, Stat_t);	1682	req->ptr2 = malloc (sizeof (Stat_t));
1269	if (!req->statdata)	1683	if (!req->ptr2)
1270	{	1684	{
1271	req_free (req);	1685	req_destroy (req);
1272	croak ("out of memory during aio_req->statdata allocation");	1686	croak ("out of memory during aio_stat statdata allocation");
1273	}	1687	}
		1688
		1689	req->flags |= FLAG_PTR2_FREE;
		1690	req->sv1 = newSVsv (fh_or_path);
1274		1691
1275	if (SvPOK (fh_or_path))	1692	if (SvPOK (fh_or_path))
1276	{	1693	{
1277	req->type = ix;	1694	req->type = ix;
1278	req->data = newSVsv (fh_or_path);
1279	req->dataptr = SvPVbyte_nolen (req->data);	1695	req->ptr1 = SvPVbyte_nolen (req->sv1);
1280	}	1696	}
1281	else	1697	else
1282	{	1698	{
1283	req->type = REQ_FSTAT;	1699	req->type = REQ_FSTAT;
1284	req->fh = newSVsv (fh_or_path);
1285	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1700	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1286	}	1701	}
1287		1702
1288	REQ_SEND;	1703	REQ_SEND;
1289	}	1704	}
1290		1705
1291	void	1706	void
		1707	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1708	PPCODE:
		1709	{
		1710	dREQ;
		1711
		1712	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1713	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1714	req->sv1 = newSVsv (fh_or_path);
		1715
		1716	if (SvPOK (fh_or_path))
		1717	{
		1718	req->type = REQ_UTIME;
		1719	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1720	}
		1721	else
		1722	{
		1723	req->type = REQ_FUTIME;
		1724	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1725	}
		1726
		1727	REQ_SEND;
		1728	}
		1729
		1730	void
		1731	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1732	PPCODE:
		1733	{
		1734	dREQ;
		1735
		1736	req->sv1 = newSVsv (fh_or_path);
		1737	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1738
		1739	if (SvPOK (fh_or_path))
		1740	{
		1741	req->type = REQ_TRUNCATE;
		1742	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1743	}
		1744	else
		1745	{
		1746	req->type = REQ_FTRUNCATE;
		1747	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1748	}
		1749
		1750	REQ_SEND;
		1751	}
		1752
		1753	void
		1754	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1755	PPCODE:
		1756	{
		1757	dREQ;
		1758
		1759	req->mode = mode;
		1760	req->sv1 = newSVsv (fh_or_path);
		1761
		1762	if (SvPOK (fh_or_path))
		1763	{
		1764	req->type = REQ_CHMOD;
		1765	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1766	}
		1767	else
		1768	{
		1769	req->type = REQ_FCHMOD;
		1770	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1771	}
		1772
		1773	REQ_SEND;
		1774	}
		1775
		1776	void
		1777	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1778	PPCODE:
		1779	{
		1780	dREQ;
		1781
		1782	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1783	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1784	req->sv1 = newSVsv (fh_or_path);
		1785
		1786	if (SvPOK (fh_or_path))
		1787	{
		1788	req->type = REQ_CHOWN;
		1789	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1790	}
		1791	else
		1792	{
		1793	req->type = REQ_FCHOWN;
		1794	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1795	}
		1796
		1797	REQ_SEND;
		1798	}
		1799
		1800	void
1292	aio_unlink (pathname,callback=&PL_sv_undef)	1801	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1293	SV * pathname
1294	SV * callback
1295	ALIAS:	1802	ALIAS:
1296	aio_unlink = REQ_UNLINK	1803	aio_unlink = REQ_UNLINK
1297	aio_rmdir = REQ_RMDIR	1804	aio_rmdir = REQ_RMDIR
1298	aio_readdir = REQ_READDIR	1805	aio_readdir = REQ_READDIR
1299	PPCODE:	1806	PPCODE:
1300	{	1807	{
1301	dREQ;	1808	dREQ;
1302		1809
1303	req->type = ix;	1810	req->type = ix;
1304	req->data = newSVsv (pathname);	1811	req->sv1 = newSVsv (pathname);
1305	req->dataptr = SvPVbyte_nolen (req->data);	1812	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1813
		1814	REQ_SEND;
		1815	}
		1816
		1817	void
		1818	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1819	PPCODE:
		1820	{
		1821	dREQ;
1306		1822
		1823	req->type = REQ_MKDIR;
		1824	req->sv1 = newSVsv (pathname);
		1825	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1826	req->mode = mode;
		1827
1307	REQ_SEND;	1828	REQ_SEND;
1308	}	1829	}
1309		1830
1310	void	1831	void
1311	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1832	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1312	SV * oldpath
1313	SV * newpath
1314	SV * callback
1315	ALIAS:	1833	ALIAS:
1316	aio_link = REQ_LINK	1834	aio_link = REQ_LINK
1317	aio_symlink = REQ_SYMLINK	1835	aio_symlink = REQ_SYMLINK
1318	aio_rename = REQ_RENAME	1836	aio_rename = REQ_RENAME
1319	PPCODE:	1837	PPCODE:
1320	{	1838	{
1321	dREQ;	1839	dREQ;
1322		1840
1323	req->type = ix;	1841	req->type = ix;
1324	req->fh = newSVsv (oldpath);	1842	req->sv2 = newSVsv (oldpath);
1325	req->data2ptr = SvPVbyte_nolen (req->fh);	1843	req->ptr2 = SvPVbyte_nolen (req->sv2);
1326	req->data = newSVsv (newpath);	1844	req->sv1 = newSVsv (newpath);
1327	req->dataptr = SvPVbyte_nolen (req->data);	1845	req->ptr1 = SvPVbyte_nolen (req->sv1);
1328		1846
1329	REQ_SEND;	1847	REQ_SEND;
1330	}	1848	}
1331		1849
1332	void	1850	void
1333	aio_busy (delay,callback=&PL_sv_undef)	1851	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1334	double delay
1335	SV * callback
1336	PPCODE:	1852	PPCODE:
1337	{	1853	{
1338	dREQ;	1854	dREQ;
		1855
		1856	req->type = REQ_MKNOD;
		1857	req->sv1 = newSVsv (pathname);
		1858	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1859	req->mode = (mode_t)mode;
		1860	req->offs = dev;
		1861
		1862	REQ_SEND;
		1863	}
		1864
		1865	void
		1866	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1867	PPCODE:
		1868	{
		1869	dREQ;
1339		1870
1340	req->type = REQ_BUSY;	1871	req->type = REQ_BUSY;
1341	req->fd = delay < 0. ? 0 : delay;	1872	req->nv1 = delay < 0. ? 0. : delay;
1342	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1343		1873
1344	REQ_SEND;	1874	REQ_SEND;
1345	}	1875	}
1346		1876
1347	void	1877	void
1348	aio_group (callback=&PL_sv_undef)	1878	aio_group (SV *callback=&PL_sv_undef)
1349	SV * callback
1350	PROTOTYPE: ;$	1879	PROTOTYPE: ;$
1351	PPCODE:	1880	PPCODE:
1352	{	1881	{
1353	dREQ;	1882	dREQ;
1354		1883
1355	req->type = REQ_GROUP;	1884	req->type = REQ_GROUP;
		1885
1356	req_send (req);	1886	req_send (req);
1357
1358	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1887	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1359	}	1888	}
1360		1889
1361	void	1890	void
1362	aio_nop (callback=&PL_sv_undef)	1891	aio_nop (SV *callback=&PL_sv_undef)
1363	SV * callback	1892	ALIAS:
		1893	aio_nop = REQ_NOP
		1894	aio_sync = REQ_SYNC
1364	PPCODE:	1895	PPCODE:
1365	{	1896	{
1366	dREQ;	1897	dREQ;
1367		1898
1368	req->type = REQ_NOP;	1899	req->type = ix;
1369		1900
1370	REQ_SEND;	1901	REQ_SEND;
1371	}	1902	}
1372		1903
1373	void	1904	int
1374	aioreq_pri (int pri = DEFAULT_PRI)	1905	aioreq_pri (int pri = 0)
1375	CODE:	1906	PROTOTYPE: ;$
		1907	CODE:
		1908	RETVAL = next_pri - PRI_BIAS;
		1909	if (items > 0)
		1910	{
1376	if (pri < PRI_MIN) pri = PRI_MIN;	1911	if (pri < PRI_MIN) pri = PRI_MIN;
1377	if (pri > PRI_MAX) pri = PRI_MAX;	1912	if (pri > PRI_MAX) pri = PRI_MAX;
1378	next_pri = pri + PRI_BIAS;	1913	next_pri = pri + PRI_BIAS;
		1914	}
		1915	OUTPUT:
		1916	RETVAL
1379		1917
1380	void	1918	void
1381	aioreq_nice (int nice = 0)	1919	aioreq_nice (int nice = 0)
1382	CODE:	1920	CODE:
1383	nice = next_pri - nice;	1921	nice = next_pri - nice;
1384	if (nice < PRI_MIN) nice = PRI_MIN;	1922	if (nice < PRI_MIN) nice = PRI_MIN;
1385	if (nice > PRI_MAX) nice = PRI_MAX;	1923	if (nice > PRI_MAX) nice = PRI_MAX;
1386	next_pri = nice + PRI_BIAS;	1924	next_pri = nice + PRI_BIAS;
1387		1925
1388	void	1926	void
1389	flush ()	1927	flush ()
1390	PROTOTYPE:	1928	PROTOTYPE:
1391	CODE:	1929	CODE:
…		…
1393	{	1931	{
1394	poll_wait ();	1932	poll_wait ();
1395	poll_cb ();	1933	poll_cb ();
1396	}	1934	}
1397		1935
1398	void	1936	int
1399	poll()	1937	poll()
1400	PROTOTYPE:	1938	PROTOTYPE:
1401	CODE:	1939	CODE:
1402	if (nreqs)
1403	{
1404	poll_wait ();	1940	poll_wait ();
1405	poll_cb ();	1941	RETVAL = poll_cb ();
1406	}	1942	OUTPUT:
		1943	RETVAL
1407		1944
1408	int	1945	int
1409	poll_fileno()	1946	poll_fileno()
1410	PROTOTYPE:	1947	PROTOTYPE:
1411	CODE:	1948	CODE:
…		…
1423		1960
1424	void	1961	void
1425	poll_wait()	1962	poll_wait()
1426	PROTOTYPE:	1963	PROTOTYPE:
1427	CODE:	1964	CODE:
1428	if (nreqs)
1429	poll_wait ();	1965	poll_wait ();
		1966
		1967	void
		1968	setsig (int signum = SIGIO)
		1969	PROTOTYPE: ;$
		1970	CODE:
		1971	{
		1972	if (block_sig_level)
		1973	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1974
		1975	X_LOCK (reslock);
		1976	main_tid = pthread_self ();
		1977	main_sig = signum;
		1978	X_UNLOCK (reslock);
		1979
		1980	if (main_sig && npending)
		1981	pthread_kill (main_tid, main_sig);
		1982	}
		1983
		1984	void
		1985	aio_block (SV *cb)
		1986	PROTOTYPE: &
		1987	PPCODE:
		1988	{
		1989	int count;
		1990
		1991	block_sig ();
		1992	PUSHMARK (SP);
		1993	PUTBACK;
		1994	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1995	unblock_sig ();
		1996
		1997	if (SvTRUE (ERRSV))
		1998	croak (0);
		1999
		2000	XSRETURN (count);
		2001	}
1430		2002
1431	int	2003	int
1432	nreqs()	2004	nreqs()
1433	PROTOTYPE:	2005	PROTOTYPE:
1434	CODE:	2006	CODE:
1435	RETVAL = nreqs;	2007	RETVAL = nreqs;
1436	OUTPUT:	2008	OUTPUT:
1437	RETVAL	2009	RETVAL
1438		2010
		2011	int
		2012	nready()
		2013	PROTOTYPE:
		2014	CODE:
		2015	RETVAL = get_nready ();
		2016	OUTPUT:
		2017	RETVAL
		2018
		2019	int
		2020	npending()
		2021	PROTOTYPE:
		2022	CODE:
		2023	RETVAL = get_npending ();
		2024	OUTPUT:
		2025	RETVAL
		2026
		2027	int
		2028	nthreads()
		2029	PROTOTYPE:
		2030	CODE:
		2031	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		2032	RETVAL = started;
		2033	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		2034	OUTPUT:
		2035	RETVAL
		2036
1439	PROTOTYPES: DISABLE	2037	PROTOTYPES: DISABLE
1440		2038
1441	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2039	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1442		2040
1443	void	2041	void
…		…
1458	PPCODE:	2056	PPCODE:
1459	{	2057	{
1460	int i;	2058	int i;
1461	aio_req req;	2059	aio_req req;
1462		2060
		2061	if (main_sig && !block_sig_level)
		2062	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		2063
1463	if (grp->fd == 2)	2064	if (grp->int1 == 2)
1464	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2065	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1465		2066
1466	for (i = 1; i < items; ++i )	2067	for (i = 1; i < items; ++i )
1467	{	2068	{
1468	if (GIMME_V != G_VOID)	2069	if (GIMME_V != G_VOID)
…		…
1470		2071
1471	req = SvAIO_REQ (ST (i));	2072	req = SvAIO_REQ (ST (i));
1472		2073
1473	if (req)	2074	if (req)
1474	{	2075	{
1475	++grp->length;	2076	++grp->size;
1476	req->grp = grp;	2077	req->grp = grp;
1477		2078
1478	req->grp_prev = 0;	2079	req->grp_prev = 0;
1479	req->grp_next = grp->grp_first;	2080	req->grp_next = grp->grp_first;
1480		2081
…		…
1494	void	2095	void
1495	result (aio_req grp, ...)	2096	result (aio_req grp, ...)
1496	CODE:	2097	CODE:
1497	{	2098	{
1498	int i;	2099	int i;
		2100	AV *av;
		2101
		2102	grp->errorno = errno;
		2103
1499	AV *av = newAV ();	2104	av = newAV ();
1500		2105
1501	for (i = 1; i < items; ++i )	2106	for (i = 1; i < items; ++i )
1502	av_push (av, newSVsv (ST (i)));	2107	av_push (av, newSVsv (ST (i)));
1503		2108
1504	SvREFCNT_dec (grp->data);	2109	SvREFCNT_dec (grp->sv1);
1505	grp->data = (SV *)av;	2110	grp->sv1 = (SV *)av;
1506	}	2111	}
		2112
		2113	void
		2114	errno (aio_req grp, int errorno = errno)
		2115	CODE:
		2116	grp->errorno = errorno;
1507		2117
1508	void	2118	void
1509	limit (aio_req grp, int limit)	2119	limit (aio_req grp, int limit)
1510	CODE:	2120	CODE:
1511	grp->fd2 = limit;	2121	grp->int2 = limit;
1512	aio_grp_feed (grp);	2122	aio_grp_feed (grp);
1513		2123
1514	void	2124	void
1515	feed (aio_req grp, SV *callback=&PL_sv_undef)	2125	feed (aio_req grp, SV *callback=&PL_sv_undef)
1516	CODE:	2126	CODE:
1517	{	2127	{
1518	SvREFCNT_dec (grp->fh2);	2128	SvREFCNT_dec (grp->sv2);
1519	grp->fh2 = newSVsv (callback);	2129	grp->sv2 = newSVsv (callback);
1520		2130
1521	if (grp->fd2 <= 0)	2131	if (grp->int2 <= 0)
1522	grp->fd2 = 2;	2132	grp->int2 = 2;
1523		2133
1524	aio_grp_feed (grp);	2134	aio_grp_feed (grp);
1525	}	2135	}
1526		2136

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