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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.71 by root, Tue Oct 24 16:35:04 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 max_outstanding = 1<<30;
134	static int respipe [2];
135		227
136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
138	#else
139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
140	#endif
141
142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
144
145	/* worker threasd management */	228	/* worker threads management */
146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	229	static mutex_t wrklock = X_MUTEX_INIT;
147		230
148	typedef struct worker {	231	typedef struct worker {
149	/* locked by wrklock */	232	/* locked by wrklock */
150	struct worker *prev, *next;	233	struct worker *prev, *next;
151		234
152	pthread_t tid;	235	thread_t tid;
153		236
154	/* locked by reslock, reqlock or wrklock */	237	/* locked by reslock, reqlock or wrklock */
155	aio_req req; /* currently processed request */	238	aio_req req; /* currently processed request */
156	void *dbuf;	239	void *dbuf;
157	DIR *dirp;	240	DIR *dirp;
…		…
180	wrk->prev->next = wrk->next;	263	wrk->prev->next = wrk->next;
181		264
182	free (wrk);	265	free (wrk);
183	}	266	}
184		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
185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	273	static mutex_t reslock = X_MUTEX_INIT;
186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	274	static mutex_t reqlock = X_MUTEX_INIT;
187	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
188		319
189	/*	320	/*
190	* a somewhat faster data structure might be nice, but	321	* a somewhat faster data structure might be nice, but
191	* with 8 priorities this actually needs <20 insns	322	* with 8 priorities this actually needs <20 insns
192	* per shift, the most expensive operation.	323	* per shift, the most expensive operation.
…		…
238	}	369	}
239		370
240	abort ();	371	abort ();
241	}	372	}
242		373
		374	static int poll_cb (void);
243	static void req_invoke (aio_req req);	375	static int req_invoke (aio_req req);
		376	static void req_destroy (aio_req req);
244	static void req_free (aio_req req);	377	static void req_cancel (aio_req req);
245		378
246	/* must be called at most once */	379	/* must be called at most once */
247	static SV *req_sv (aio_req req, const char *klass)	380	static SV *req_sv (aio_req req, const char *klass)
248	{	381	{
249	if (!req->self)	382	if (!req->self)
…		…
267	return mg ? (aio_req)mg->mg_ptr : 0;	400	return mg ? (aio_req)mg->mg_ptr : 0;
268	}	401	}
269		402
270	static void aio_grp_feed (aio_req grp)	403	static void aio_grp_feed (aio_req grp)
271	{	404	{
		405	block_sig ();
		406
272	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
273	{	408	{
274	int old_len = grp->length;	409	int old_len = grp->size;
275		410
276	if (grp->fh2 && SvOK (grp->fh2))	411	if (grp->sv2 && SvOK (grp->sv2))
277	{	412	{
278	dSP;	413	dSP;
279		414
280	ENTER;	415	ENTER;
281	SAVETMPS;	416	SAVETMPS;
282	PUSHMARK (SP);	417	PUSHMARK (SP);
283	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
284	PUTBACK;	419	PUTBACK;
285	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
286	SPAGAIN;	421	SPAGAIN;
287	FREETMPS;	422	FREETMPS;
288	LEAVE;	423	LEAVE;
289	}	424	}
290		425
291	/* stop if no progress has been made */	426	/* stop if no progress has been made */
292	if (old_len == grp->length)	427	if (old_len == grp->size)
293	{	428	{
294	SvREFCNT_dec (grp->fh2);	429	SvREFCNT_dec (grp->sv2);
295	grp->fh2 = 0;	430	grp->sv2 = 0;
296	break;	431	break;
297	}	432	}
298	}	433	}
		434
		435	unblock_sig ();
299	}	436	}
300		437
301	static void aio_grp_dec (aio_req grp)	438	static void aio_grp_dec (aio_req grp)
302	{	439	{
303	--grp->length;	440	--grp->size;
304		441
305	/* call feeder, if applicable */	442	/* call feeder, if applicable */
306	aio_grp_feed (grp);	443	aio_grp_feed (grp);
307		444
308	/* finish, if done */	445	/* finish, if done */
309	if (!grp->length && grp->fd)	446	if (!grp->size && grp->int1)
310	{	447	{
		448	block_sig ();
		449
311	req_invoke (grp);	450	if (!req_invoke (grp))
		451	{
		452	req_destroy (grp);
		453	unblock_sig ();
		454	croak (0);
		455	}
		456
312	req_free (grp);	457	req_destroy (grp);
		458	unblock_sig ();
313	}	459	}
314	}	460	}
315		461
316	static void poll_wait ()
317	{
318	fd_set rfd;
319
320	while (nreqs)
321	{
322	int size;
323	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
324	LOCK (reslock);
325	#endif
326	size = res_queue.size;
327	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
328	UNLOCK (reslock);
329	#endif
330
331	if (size)
332	return;
333
334	FD_ZERO(&rfd);
335	FD_SET(respipe [0], &rfd);
336
337	select (respipe [0] + 1, &rfd, 0, 0, 0);
338	}
339	}
340
341	static void req_invoke (aio_req req)	462	static int req_invoke (aio_req req)
342	{	463	{
343	dSP;	464	dSP;
		465
		466	if (req->flags & FLAG_SV2_RO_OFF)
		467	SvREADONLY_off (req->sv2);
344		468
345	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
346	{	470	{
347	errno = req->errorno;
348
349	ENTER;	471	ENTER;
350	SAVETMPS;	472	SAVETMPS;
351	PUSHMARK (SP);	473	PUSHMARK (SP);
352	EXTEND (SP, 1);	474	EXTEND (SP, 1);
353		475
…		…
358	SV *rv = &PL_sv_undef;	480	SV *rv = &PL_sv_undef;
359		481
360	if (req->result >= 0)	482	if (req->result >= 0)
361	{	483	{
362	int i;	484	int i;
363	char *buf = req->data2ptr;	485	char *buf = req->ptr2;
364	AV *av = newAV ();	486	AV *av = newAV ();
365		487
366	av_extend (av, req->result - 1);	488	av_extend (av, req->result - 1);
367		489
368	for (i = 0; i < req->result; ++i)	490	for (i = 0; i < req->result; ++i)
…		…
381	break;	503	break;
382		504
383	case REQ_OPEN:	505	case REQ_OPEN:
384	{	506	{
385	/* convert fd to fh */	507	/* convert fd to fh */
386	SV *fh;	508	SV *fh = &PL_sv_undef;
387		509
388	PUSHs (sv_2mortal (newSViv (req->result)));	510	if (req->result >= 0)
389	PUTBACK;	511	{
390	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	512	GV *gv = (GV *)sv_newmortal ();
391	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);
392		519
393	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	);
394		527
		528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		529	fh = (SV *)gv;
		530	}
		531
395	PUSHMARK (SP);	532	PUSHs (fh);
396	XPUSHs (sv_2mortal (fh));
397	}	533	}
398	break;	534	break;
399		535
400	case REQ_GROUP:	536	case REQ_GROUP:
401	req->fd = 2; /* mark group as finished */	537	req->int1 = 2; /* mark group as finished */
402		538
403	if (req->data)	539	if (req->sv1)
404	{	540	{
405	int i;	541	int i;
406	AV *av = (AV *)req->data;	542	AV *av = (AV *)req->sv1;
407		543
408	EXTEND (SP, AvFILL (av) + 1);	544	EXTEND (SP, AvFILL (av) + 1);
409	for (i = 0; i <= AvFILL (av); ++i)	545	for (i = 0; i <= AvFILL (av); ++i)
410	PUSHs (*av_fetch (av, i, 0));	546	PUSHs (*av_fetch (av, i, 0));
411	}	547	}
…		…
413		549
414	case REQ_NOP:	550	case REQ_NOP:
415	case REQ_BUSY:	551	case REQ_BUSY:
416	break;	552	break;
417		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
418	default:	578	default:
419	PUSHs (sv_2mortal (newSViv (req->result)));	579	PUSHs (sv_2mortal (newSViv (req->result)));
420	break;	580	break;
421	}	581	}
422		582
		583	errno = req->errorno;
423		584
424	PUTBACK;	585	PUTBACK;
425	call_sv (req->callback, G_VOID | G_EVAL);	586	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
426	SPAGAIN;	587	SPAGAIN;
427		588
428	FREETMPS;	589	FREETMPS;
429	LEAVE;	590	LEAVE;
		591
		592	PUTBACK;
430	}	593	}
431		594
432	if (req->grp)	595	if (req->grp)
433	{	596	{
434	aio_req grp = req->grp;	597	aio_req grp = req->grp;
…		…
441	grp->grp_first = req->grp_next;	604	grp->grp_first = req->grp_next;
442		605
443	aio_grp_dec (grp);	606	aio_grp_dec (grp);
444	}	607	}
445		608
446	if (SvTRUE (ERRSV))	609	return !SvTRUE (ERRSV);
447	{
448	req_free (req);
449	croak (0);
450	}
451	}	610	}
452		611
453	static void req_free (aio_req req)	612	static void req_destroy (aio_req req)
454	{	613	{
455	if (req->self)	614	if (req->self)
456	{	615	{
457	sv_unmagic (req->self, PERL_MAGIC_ext);	616	sv_unmagic (req->self, PERL_MAGIC_ext);
458	SvREFCNT_dec (req->self);	617	SvREFCNT_dec (req->self);
459	}	618	}
460		619
461	SvREFCNT_dec (req->data);
462	SvREFCNT_dec (req->fh);	620	SvREFCNT_dec (req->sv1);
463	SvREFCNT_dec (req->fh2);	621	SvREFCNT_dec (req->sv2);
464	SvREFCNT_dec (req->callback);	622	SvREFCNT_dec (req->callback);
465	Safefree (req->statdata);
466		623
467	if (req->type == REQ_READDIR)	624	if (req->flags & FLAG_PTR2_FREE)
468	free (req->data2ptr);	625	free (req->ptr2);
469		626
470	Safefree (req);	627	Safefree (req);
471	}	628	}
472		629
		630	static void req_cancel_subs (aio_req grp)
		631	{
		632	aio_req sub;
		633
		634	if (grp->type != REQ_GROUP)
		635	return;
		636
		637	SvREFCNT_dec (grp->sv2);
		638	grp->sv2 = 0;
		639
		640	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		641	req_cancel (sub);
		642	}
		643
473	static void req_cancel (aio_req req)	644	static void req_cancel (aio_req req)
474	{	645	{
475	req->flags |= FLAG_CANCELLED;	646	req->flags |= FLAG_CANCELLED;
476		647
477	if (req->type == REQ_GROUP)	648	req_cancel_subs (req);
		649	}
		650
		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)
478	{	673	{
479	aio_req sub;	674	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		675	croak ("unable to initialize result pipe(2)");
480		676
481	for (sub = req->grp_first; sub; sub = sub->grp_next)	677	respipe_close (respipe [0]);
482	req_cancel (sub);	678	respipe [0] = old_readfd;
483	}	679	}
484	}
485		680
486	static int poll_cb ()	681	#ifdef _WIN32
487	{	682	int arg = 1;
488	dSP;	683	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
489	int count = 0;	684	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
490	int do_croak = 0;	685	#else
491	aio_req req;	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)");
492		690
493	for (;;)	691	respipe_osf [0] = TO_SOCKET (respipe [0]);
494	{	692	respipe_osf [1] = TO_SOCKET (respipe [1]);
495	LOCK (reslock);
496	req = reqq_shift (&res_queue);
497
498	if (req)
499	{
500	if (!res_queue.size)
501	{
502	/* read any signals sent by the worker threads */
503	char buf [32];
504	while (read (respipe [0], buf, 32) == 32)
505	;
506	}
507	}
508
509	UNLOCK (reslock);
510
511	if (!req)
512	break;
513
514	--nreqs;
515
516	if (req->type == REQ_QUIT)
517	started--;
518	else if (req->type == REQ_GROUP && req->length)
519	{
520	req->fd = 1; /* mark request as delayed */
521	continue;
522	}
523	else
524	{
525	if (req->type == REQ_READ)
526	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
527
528	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
529	SvREADONLY_off (req->data);
530
531	if (req->statdata)
532	{
533	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
534	PL_laststatval = req->result;
535	PL_statcache = *(req->statdata);
536	}
537
538	req_invoke (req);
539
540	count++;
541	}
542
543	req_free (req);
544	}
545
546	return count;
547	}	693	}
548		694
549	static void *aio_proc(void *arg);	695	X_THREAD_PROC (aio_proc);
550		696
551	static void start_thread (void)	697	static void start_thread (void)
552	{	698	{
553	worker *wrk = calloc (1, sizeof (worker));	699	worker *wrk = calloc (1, sizeof (worker));
554		700
555	if (!wrk)	701	if (!wrk)
556	croak ("unable to allocate worker thread data");	702	croak ("unable to allocate worker thread data");
557		703
558	sigset_t fullsigset, oldsigset;
559	pthread_attr_t attr;
560
561	pthread_attr_init (&attr);
562	pthread_attr_setstacksize (&attr, STACKSIZE);
563	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
564
565	sigfillset (&fullsigset);
566
567	LOCK (wrklock);	704	X_LOCK (wrklock);
568	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
569		705
570	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	706	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
571	{	707	{
572	wrk->prev = &wrk_first;	708	wrk->prev = &wrk_first;
573	wrk->next = wrk_first.next;	709	wrk->next = wrk_first.next;
574	wrk_first.next->prev = wrk;	710	wrk_first.next->prev = wrk;
575	wrk_first.next = wrk;	711	wrk_first.next = wrk;
576	started++;	712	++started;
577	}	713	}
578	else	714	else
579	free (wrk);	715	free (wrk);
580		716
581	sigprocmask (SIG_SETMASK, &oldsigset, 0);
582	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 ();
583	}	730	}
584		731
585	static void req_send (aio_req req)	732	static void req_send (aio_req req)
586	{	733	{
587	while (started < wanted && nreqs >= started)	734	block_sig ();
588	start_thread ();
589		735
590	++nreqs;	736	++nreqs;
591		737
592	LOCK (reqlock);	738	X_LOCK (reqlock);
		739	++nready;
593	reqq_push (&req_queue, req);	740	reqq_push (&req_queue, req);
594	pthread_cond_signal (&reqwait);	741	X_COND_SIGNAL (reqwait);
595	UNLOCK (reqlock);	742	X_UNLOCK (reqlock);
596		743
597	if (nreqs > max_outstanding)	744	unblock_sig ();
598	for (;;)
599	{
600	poll_cb ();
601		745
602	if (nreqs <= max_outstanding)	746	maybe_start_thread ();
603	break;
604
605	poll_wait ();
606	}
607	}	747	}
608		748
609	static void end_thread (void)	749	static void end_thread (void)
610	{	750	{
611	aio_req req;	751	aio_req req;
…		…
613	Newz (0, req, 1, aio_cb);	753	Newz (0, req, 1, aio_cb);
614		754
615	req->type = REQ_QUIT;	755	req->type = REQ_QUIT;
616	req->pri = PRI_MAX + PRI_BIAS;	756	req->pri = PRI_MAX + PRI_BIAS;
617		757
618	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);
619	}	773	}
620		774
621	static void min_parallel (int nthreads)	775	static void min_parallel (int nthreads)
622	{	776	{
623	if (wanted < nthreads)	777	if (wanted < nthreads)
624	wanted = nthreads;	778	wanted = nthreads;
625	}	779	}
626		780
627	static void max_parallel (int nthreads)	781	static void max_parallel (int nthreads)
628	{	782	{
629	int cur = started;
630
631	if (wanted > nthreads)	783	if (wanted > nthreads)
632	wanted = nthreads;	784	wanted = nthreads;
633		785
634	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)
635	{	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
636	end_thread ();	804	maybe_start_thread ();
637	cur--;	805
		806	FD_ZERO (&rfd);
		807	FD_SET (respipe [0], &rfd);
		808
		809	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
638	}	810	}
		811	}
639		812
640	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 (;;)
641	{	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
642	poll_wait ();	890	poll_wait ();
643	poll_cb ();	891
		892	++maxreqs;
644	}	893	}
645	}
646		894
647	static void create_pipe ()	895	unblock_sig ();
648	{	896	return count;
649	if (pipe (respipe))
650	croak ("unable to initialize result pipe");
651
652	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
653	croak ("cannot set result pipe to nonblocking mode");
654
655	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
656	croak ("cannot set result pipe to nonblocking mode");
657	}	897	}
658		898
659	/*****************************************************************************/	899	/*****************************************************************************/
660	/* work around various missing functions */	900	/* work around various missing functions */
661		901
…		…
666	/*	906	/*
667	* make our pread/pwrite safe against themselves, but not against	907	* make our pread/pwrite safe against themselves, but not against
668	* 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,
669	* but that's your problem, not mine.	909	* but that's your problem, not mine.
670	*/	910	*/
671	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	911	static mutex_t preadwritelock = X_MUTEX_INIT;
672		912
673	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)
674	{	914	{
675	ssize_t res;	915	ssize_t res;
676	off_t ooffset;	916	off_t ooffset;
677		917
678	LOCK (preadwritelock);	918	X_LOCK (preadwritelock);
679	ooffset = lseek (fd, 0, SEEK_CUR);	919	ooffset = lseek (fd, 0, SEEK_CUR);
680	lseek (fd, offset, SEEK_SET);	920	lseek (fd, offset, SEEK_SET);
681	res = read (fd, buf, count);	921	res = read (fd, buf, count);
682	lseek (fd, ooffset, SEEK_SET);	922	lseek (fd, ooffset, SEEK_SET);
683	UNLOCK (preadwritelock);	923	X_UNLOCK (preadwritelock);
684		924
685	return res;	925	return res;
686	}	926	}
687		927
688	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)
689	{	929	{
690	ssize_t res;	930	ssize_t res;
691	off_t ooffset;	931	off_t ooffset;
692		932
693	LOCK (preadwritelock);	933	X_LOCK (preadwritelock);
694	ooffset = lseek (fd, 0, SEEK_CUR);	934	ooffset = lseek (fd, 0, SEEK_CUR);
695	lseek (fd, offset, SEEK_SET);	935	lseek (fd, offset, SEEK_SET);
696	res = write (fd, buf, count);	936	res = write (fd, buf, count);
697	lseek (fd, offset, SEEK_SET);	937	lseek (fd, offset, SEEK_SET);
698	UNLOCK (preadwritelock);	938	X_UNLOCK (preadwritelock);
699		939
700	return res;	940	return res;
701	}	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
702	#endif	970	#endif
703		971
704	#if !HAVE_FDATASYNC	972	#if !HAVE_FDATASYNC
705	# define fdatasync fsync	973	# define fdatasync fsync
706	#endif	974	#endif
707		975
708	#if !HAVE_READAHEAD	976	#if !HAVE_READAHEAD
709	# define readahead aio_readahead	977	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
710		978
711	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)
712	{	980	{
		981	size_t todo = count;
713	dBUF;	982	dBUF;
714		983
715	while (count > 0)	984	while (todo > 0)
716	{	985	{
717	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	986	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
718		987
719	pread (fd, aio_buf, len, offset);	988	pread (fd, aio_buf, len, offset);
720	offset += len;	989	offset += len;
721	count -= len;	990	todo -= len;
722	}	991	}
723		992
724	errno = 0;	993	errno = 0;
		994	return count;
725	}	995	}
		996
726	#endif	997	#endif
727		998
728	#if !HAVE_READDIR_R	999	#if !HAVE_READDIR_R
729	# define readdir_r aio_readdir_r	1000	# define readdir_r aio_readdir_r
730		1001
731	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	1002	static mutex_t readdirlock = X_MUTEX_INIT;
732		1003
733	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)
734	{	1005	{
735	struct dirent *e;	1006	X_DIRENT *e;
736	int errorno;	1007	int errorno;
737		1008
738	LOCK (readdirlock);	1009	X_LOCK (readdirlock);
739		1010
740	e = readdir (dirp);	1011	e = readdir (dirp);
741	errorno = errno;	1012	errorno = errno;
742		1013
743	if (e)	1014	if (e)
…		…
746	strcpy (ent->d_name, e->d_name);	1017	strcpy (ent->d_name, e->d_name);
747	}	1018	}
748	else	1019	else
749	*res = 0;	1020	*res = 0;
750		1021
751	UNLOCK (readdirlock);	1022	X_UNLOCK (readdirlock);
752		1023
753	errno = errorno;	1024	errno = errorno;
754	return e ? 0 : -1;	1025	return e ? 0 : -1;
755	}	1026	}
756	#endif	1027	#endif
…		…
775	{	1046	{
776	off_t sbytes;	1047	off_t sbytes;
777	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	1048	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
778		1049
779	if (res < 0 && sbytes)	1050	if (res < 0 && sbytes)
780	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	1051	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
781	res = sbytes;	1052	res = sbytes;
782	}	1053	}
783		1054
784	# elif __hpux	1055	# elif __hpux
785	res = sendfile (ofd, ifd, offset, count, 0, 0);	1056	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
852	static void scandir_ (aio_req req, worker *self)	1123	static void scandir_ (aio_req req, worker *self)
853	{	1124	{
854	DIR *dirp;	1125	DIR *dirp;
855	union	1126	union
856	{	1127	{
857	struct dirent d;	1128	X_DIRENT d;
858	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1129	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
859	} *u;	1130	} *u;
860	struct dirent *entp;	1131	X_DIRENT *entp;
861	char *name, *names;	1132	char *name, *names;
862	int memlen = 4096;	1133	int memlen = 4096;
863	int memofs = 0;	1134	int memofs = 0;
864	int res = 0;	1135	int res = 0;
865	int errorno;
866		1136
867	LOCK (wrklock);	1137	X_LOCK (wrklock);
868	self->dirp = dirp = opendir (req->dataptr);	1138	self->dirp = dirp = opendir (req->ptr1);
869	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);
870	UNLOCK (wrklock);	1142	X_UNLOCK (wrklock);
871
872	req->data2ptr = names = malloc (memlen);
873		1143
874	if (dirp && u && names)	1144	if (dirp && u && names)
875	for (;;)	1145	for (;;)
876	{	1146	{
877	errno = 0;	1147	errno = 0;
…		…
889	res++;	1159	res++;
890		1160
891	while (memofs + len > memlen)	1161	while (memofs + len > memlen)
892	{	1162	{
893	memlen *= 2;	1163	memlen *= 2;
894	LOCK (wrklock);	1164	X_LOCK (wrklock);
895	req->data2ptr = names = realloc (names, memlen);	1165	req->ptr2 = names = realloc (names, memlen);
896	UNLOCK (wrklock);	1166	X_UNLOCK (wrklock);
897		1167
898	if (!names)	1168	if (!names)
899	break;	1169	break;
900	}	1170	}
901		1171
…		…
910	req->result = res;	1180	req->result = res;
911	}	1181	}
912		1182
913	/*****************************************************************************/	1183	/*****************************************************************************/
914		1184
915	static void *aio_proc (void *thr_arg)	1185	X_THREAD_PROC (aio_proc)
916	{	1186	{
917	aio_req req;	1187	aio_req req;
918	int type;	1188	struct timespec ts;
919	worker *self = (worker *)thr_arg;	1189	worker *self = (worker *)thr_arg;
920		1190
921	do	1191	/* try to distribute timeouts somewhat randomly */
		1192	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
		1193
		1194	for (;;)
922	{	1195	{
		1196	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1197
923	LOCK (reqlock);	1198	X_LOCK (reqlock);
924		1199
925	for (;;)	1200	for (;;)
926	{	1201	{
927	self->req = req = reqq_shift (&req_queue);	1202	self->req = req = reqq_shift (&req_queue);
928		1203
929	if (req)	1204	if (req)
930	break;	1205	break;
931		1206
932	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;
933	}	1228	}
934		1229
		1230	--nready;
		1231
935	UNLOCK (reqlock);	1232	X_UNLOCK (reqlock);
936		1233
937	errno = 0; /* strictly unnecessary */	1234	errno = 0; /* strictly unnecessary */
938	type = req->type; /* remember type for QUIT check */
939		1235
940	if (!(req->flags & FLAG_CANCELLED))	1236	if (!(req->flags & FLAG_CANCELLED))
941	switch (type)	1237	switch (req->type)
942	{	1238	{
943	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1239	case REQ_READ: req->result = req->offs >= 0
944	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;
945		1245
946	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;
947	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;
948		1248
949	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;
950	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;
951	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;
952		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
953	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;
954	case REQ_CLOSE: req->result = close (req->fd); break;	1261	case REQ_CLOSE: req->result = close (req->int1); break;
955	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1262	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
956	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;
957	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1265	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
958	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1266	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
959	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;
960		1270
961	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1271	case REQ_SYNC: req->result = 0; sync (); break;
962	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
963	case REQ_READDIR: scandir_ (req, self); break;	1275	case REQ_READDIR: scandir_ (req, self); break;
964		1276
965	case REQ_BUSY:	1277	case REQ_BUSY:
		1278	#ifdef _WIN32
		1279	Sleep (req->nv1 * 1000.);
		1280	#else
966	{	1281	{
967	struct timeval tv;	1282	struct timeval tv;
968		1283
969	tv.tv_sec = req->fd;	1284	tv.tv_sec = req->nv1;
970	tv.tv_usec = req->fd2;	1285	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
971		1286
972	req->result = select (0, 0, 0, 0, &tv);	1287	req->result = select (0, 0, 0, 0, &tv);
973	}	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	}
974		1315
975	case REQ_GROUP:	1316	case REQ_GROUP:
976	case REQ_NOP:	1317	case REQ_NOP:
		1318	break;
		1319
977	case REQ_QUIT:	1320	case REQ_QUIT:
978	break;	1321	goto quit;
979		1322
980	default:	1323	default:
981	req->result = ENOSYS;	1324	req->result = -1;
982	break;	1325	break;
983	}	1326	}
984		1327
985	req->errorno = errno;	1328	req->errorno = errno;
986		1329
987	LOCK (reslock);	1330	X_LOCK (reslock);
		1331
		1332	++npending;
988		1333
989	if (!reqq_push (&res_queue, req))	1334	if (!reqq_push (&res_queue, req))
		1335	{
990	/* write a dummy byte to the pipe so fh becomes ready */	1336	/* write a dummy byte to the pipe so fh becomes ready */
991	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	}
992		1343
993	self->req = 0;	1344	self->req = 0;
994	worker_clear (self);	1345	worker_clear (self);
995		1346
996	UNLOCK (reslock);	1347	X_UNLOCK (reslock);
997	}	1348	}
998	while (type != REQ_QUIT);
999		1349
		1350	quit:
1000	LOCK (wrklock);	1351	X_LOCK (wrklock);
1001	worker_free (self);	1352	worker_free (self);
1002	UNLOCK (wrklock);	1353	X_UNLOCK (wrklock);
1003		1354
1004	return 0;	1355	return 0;
1005	}	1356	}
1006		1357
1007	/*****************************************************************************/	1358	/*****************************************************************************/
1008		1359
1009	static void atfork_prepare (void)	1360	static void atfork_prepare (void)
1010	{	1361	{
1011	LOCK (wrklock);	1362	X_LOCK (wrklock);
1012	LOCK (reqlock);	1363	X_LOCK (reqlock);
1013	LOCK (reslock);	1364	X_LOCK (reslock);
1014	#if !HAVE_PREADWRITE	1365	#if !HAVE_PREADWRITE
1015	LOCK (preadwritelock);	1366	X_LOCK (preadwritelock);
1016	#endif	1367	#endif
1017	#if !HAVE_READDIR_R	1368	#if !HAVE_READDIR_R
1018	LOCK (readdirlock);	1369	X_LOCK (readdirlock);
1019	#endif	1370	#endif
1020	}	1371	}
1021		1372
1022	static void atfork_parent (void)	1373	static void atfork_parent (void)
1023	{	1374	{
1024	#if !HAVE_READDIR_R	1375	#if !HAVE_READDIR_R
1025	UNLOCK (readdirlock);	1376	X_UNLOCK (readdirlock);
1026	#endif	1377	#endif
1027	#if !HAVE_PREADWRITE	1378	#if !HAVE_PREADWRITE
1028	UNLOCK (preadwritelock);	1379	X_UNLOCK (preadwritelock);
1029	#endif	1380	#endif
1030	UNLOCK (reslock);	1381	X_UNLOCK (reslock);
1031	UNLOCK (reqlock);	1382	X_UNLOCK (reqlock);
1032	UNLOCK (wrklock);	1383	X_UNLOCK (wrklock);
1033	}	1384	}
1034		1385
1035	static void atfork_child (void)	1386	static void atfork_child (void)
1036	{	1387	{
1037	aio_req prv;	1388	aio_req prv;
1038		1389
1039	while (prv = reqq_shift (&req_queue))	1390	while (prv = reqq_shift (&req_queue))
1040	req_free (prv);	1391	req_destroy (prv);
1041		1392
1042	while (prv = reqq_shift (&res_queue))	1393	while (prv = reqq_shift (&res_queue))
1043	req_free (prv);	1394	req_destroy (prv);
1044		1395
1045	while (wrk_first.next != &wrk_first)	1396	while (wrk_first.next != &wrk_first)
1046	{	1397	{
1047	worker *wrk = wrk_first.next;	1398	worker *wrk = wrk_first.next;
1048		1399
1049	if (wrk->req)	1400	if (wrk->req)
1050	req_free (wrk->req);	1401	req_destroy (wrk->req);
1051		1402
1052	worker_clear (wrk);	1403	worker_clear (wrk);
1053	worker_free (wrk);	1404	worker_free (wrk);
1054	}	1405	}
1055		1406
1056	started = 0;	1407	started = 0;
		1408	idle = 0;
1057	nreqs = 0;	1409	nreqs = 0;
		1410	nready = 0;
		1411	npending = 0;
1058		1412
1059	close (respipe [0]);
1060	close (respipe [1]);
1061	create_pipe ();	1413	create_respipe ();
1062		1414
1063	atfork_parent ();	1415	atfork_parent ();
1064	}	1416	}
1065		1417
1066	#define dREQ \	1418	#define dREQ \
…		…
1088		1440
1089	PROTOTYPES: ENABLE	1441	PROTOTYPES: ENABLE
1090		1442
1091	BOOT:	1443	BOOT:
1092	{	1444	{
1093	HV *stash = gv_stashpv ("IO::AIO", 1);	1445	stash = gv_stashpv ("IO::AIO", 1);
		1446
1094	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1095	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1096	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);
1097		1459
1098	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
1099	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1468	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1100	}	1469	}
1101		1470
1102	void	1471	void
1103	min_parallel (nthreads)	1472	max_poll_reqs (int nreqs)
1104	int nthreads
1105	PROTOTYPE: $	1473	PROTOTYPE: $
		1474	CODE:
		1475	max_poll_reqs = nreqs;
1106		1476
1107	void	1477	void
1108	max_parallel (nthreads)	1478	max_poll_time (double nseconds)
1109	int nthreads
1110	PROTOTYPE: $	1479	PROTOTYPE: $
		1480	CODE:
		1481	max_poll_time = nseconds * AIO_TICKS;
		1482
		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);
1111		1496
1112	int	1497	int
1113	max_outstanding (nreqs)	1498	max_outstanding (int maxreqs)
1114	int nreqs	1499	PROTOTYPE: $
1115	PROTOTYPE: $
1116	CODE:	1500	CODE:
1117	RETVAL = max_outstanding;	1501	RETVAL = max_outstanding;
1118	max_outstanding = nreqs;	1502	max_outstanding = maxreqs;
		1503	OUTPUT:
		1504	RETVAL
1119		1505
1120	void	1506	void
1121	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1507	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1122	SV * pathname
1123	int flags
1124	int mode
1125	SV * callback
1126	PROTOTYPE: $$$;$	1508	PROTOTYPE: $$$;$
1127	PPCODE:	1509	PPCODE:
1128	{	1510	{
1129	dREQ;	1511	dREQ;
1130		1512
1131	req->type = REQ_OPEN;	1513	req->type = REQ_OPEN;
1132	req->data = newSVsv (pathname);	1514	req->sv1 = newSVsv (pathname);
1133	req->dataptr = SvPVbyte_nolen (req->data);	1515	req->ptr1 = SvPVbyte_nolen (req->sv1);
1134	req->fd = flags;	1516	req->int1 = flags;
1135	req->mode = mode;	1517	req->mode = mode;
1136		1518
1137	REQ_SEND;	1519	REQ_SEND;
1138	}	1520	}
1139		1521
1140	void	1522	void
1141	aio_close (fh,callback=&PL_sv_undef)	1523	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
1142	SV * fh
1143	SV * callback
1144	PROTOTYPE: $;$	1524	PROTOTYPE: $;$
1145	ALIAS:	1525	ALIAS:
1146	aio_close = REQ_CLOSE
1147	aio_fsync = REQ_FSYNC	1526	aio_fsync = REQ_FSYNC
1148	aio_fdatasync = REQ_FDATASYNC	1527	aio_fdatasync = REQ_FDATASYNC
1149	PPCODE:	1528	PPCODE:
1150	{	1529	{
1151	dREQ;	1530	dREQ;
1152		1531
1153	req->type = ix;	1532	req->type = ix;
1154	req->fh = newSVsv (fh);	1533	req->sv1 = newSVsv (fh);
1155	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1534	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1156		1535
1157	REQ_SEND (req);	1536	REQ_SEND (req);
1158	}	1537	}
1159		1538
		1539	int
		1540	_dup (int fd)
		1541	PROTOTYPE: $
		1542	CODE:
		1543	RETVAL = dup (fd);
		1544	OUTPUT:
		1545	RETVAL
		1546
1160	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
1161	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)
1162	SV * fh
1163	UV offset
1164	UV length
1165	SV * data
1166	UV dataoffset
1167	SV * callback
1168	ALIAS:	1562	ALIAS:
1169	aio_read = REQ_READ	1563	aio_read = REQ_READ
1170	aio_write = REQ_WRITE	1564	aio_write = REQ_WRITE
1171	PROTOTYPE: $$$$$;$	1565	PROTOTYPE: $$$$$;$
1172	PPCODE:	1566	PPCODE:
1173	{	1567	{
1174	aio_req req;
1175	STRLEN svlen;	1568	STRLEN svlen;
1176	char *svptr = SvPVbyte (data, svlen);	1569	char *svptr = SvPVbyte (data, svlen);
		1570	UV len = SvUV (length);
1177		1571
1178	SvUPGRADE (data, SVt_PV);	1572	SvUPGRADE (data, SVt_PV);
1179	SvPOK_on (data);	1573	SvPOK_on (data);
1180		1574
1181	if (dataoffset < 0)	1575	if (dataoffset < 0)
1182	dataoffset += svlen;	1576	dataoffset += svlen;
1183		1577
1184	if (dataoffset < 0 || dataoffset > svlen)	1578	if (dataoffset < 0 || dataoffset > svlen)
1185	croak ("data offset outside of string");	1579	croak ("dataoffset outside of data scalar");
1186		1580
1187	if (ix == REQ_WRITE)	1581	if (ix == REQ_WRITE)
1188	{	1582	{
1189	/* write: check length and adjust. */	1583	/* write: check length and adjust. */
1190	if (length < 0 || length + dataoffset > svlen)	1584	if (!SvOK (length) || len + dataoffset > svlen)
1191	length = svlen - dataoffset;	1585	len = svlen - dataoffset;
1192	}	1586	}
1193	else	1587	else
1194	{	1588	{
1195	/* read: grow scalar as necessary */	1589	/* read: grow scalar as necessary */
1196	svptr = SvGROW (data, length + dataoffset);	1590	svptr = SvGROW (data, len + dataoffset + 1);
1197	}	1591	}
1198		1592
1199	if (length < 0)	1593	if (len < 0)
1200	croak ("length must not be negative");	1594	croak ("length must not be negative");
1201		1595
1202	{	1596	{
1203	dREQ;	1597	dREQ;
1204		1598
1205	req->type = ix;	1599	req->type = ix;
1206	req->fh = newSVsv (fh);	1600	req->sv1 = newSVsv (fh);
1207	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1601	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1208	: IoOFP (sv_2io (fh)));	1602	: IoOFP (sv_2io (fh)));
		1603	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1209	req->offset = offset;	1604	req->size = len;
1210	req->length = length;
1211	req->data = SvREFCNT_inc (data);	1605	req->sv2 = SvREFCNT_inc (data);
1212	req->dataptr = (char *)svptr + dataoffset;	1606	req->ptr1 = (char *)svptr + dataoffset;
		1607	req->stroffset = dataoffset;
1213		1608
1214	if (!SvREADONLY (data))	1609	if (!SvREADONLY (data))
1215	{	1610	{
1216	SvREADONLY_on (data);	1611	SvREADONLY_on (data);
1217	req->data2ptr = (void *)data;	1612	req->flags |= FLAG_SV2_RO_OFF;
1218	}	1613	}
1219		1614
1220	REQ_SEND;	1615	REQ_SEND;
1221	}	1616	}
1222	}	1617	}
1223		1618
1224	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
1225	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)
1226	SV * out_fh
1227	SV * in_fh
1228	UV in_offset
1229	UV length
1230	SV * callback
1231	PROTOTYPE: $$$$;$	1641	PROTOTYPE: $$$$;$
1232	PPCODE:	1642	PPCODE:
1233	{	1643	{
1234	dREQ;	1644	dREQ;
1235		1645
1236	req->type = REQ_SENDFILE;	1646	req->type = REQ_SENDFILE;
1237	req->fh = newSVsv (out_fh);	1647	req->sv1 = newSVsv (out_fh);
1238	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1648	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1239	req->fh2 = newSVsv (in_fh);	1649	req->sv2 = newSVsv (in_fh);
1240	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1650	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1241	req->offset = in_offset;	1651	req->offs = SvVAL64 (in_offset);
1242	req->length = length;	1652	req->size = length;
1243		1653
1244	REQ_SEND;	1654	REQ_SEND;
1245	}	1655	}
1246		1656
1247	void	1657	void
1248	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1658	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1249	SV * fh
1250	UV offset
1251	IV length
1252	SV * callback
1253	PROTOTYPE: $$$;$	1659	PROTOTYPE: $$$;$
1254	PPCODE:	1660	PPCODE:
1255	{	1661	{
1256	dREQ;	1662	dREQ;
1257		1663
1258	req->type = REQ_READAHEAD;	1664	req->type = REQ_READAHEAD;
1259	req->fh = newSVsv (fh);	1665	req->sv1 = newSVsv (fh);
1260	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1666	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1261	req->offset = offset;	1667	req->offs = SvVAL64 (offset);
1262	req->length = length;	1668	req->size = length;
1263		1669
1264	REQ_SEND;	1670	REQ_SEND;
1265	}	1671	}
1266		1672
1267	void	1673	void
1268	aio_stat (fh_or_path,callback=&PL_sv_undef)	1674	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1269	SV * fh_or_path
1270	SV * callback
1271	ALIAS:	1675	ALIAS:
1272	aio_stat = REQ_STAT	1676	aio_stat = REQ_STAT
1273	aio_lstat = REQ_LSTAT	1677	aio_lstat = REQ_LSTAT
1274	PPCODE:	1678	PPCODE:
1275	{	1679	{
1276	dREQ;	1680	dREQ;
1277		1681
1278	New (0, req->statdata, 1, Stat_t);	1682	req->ptr2 = malloc (sizeof (Stat_t));
1279	if (!req->statdata)	1683	if (!req->ptr2)
1280	{	1684	{
1281	req_free (req);	1685	req_destroy (req);
1282	croak ("out of memory during aio_req->statdata allocation");	1686	croak ("out of memory during aio_stat statdata allocation");
1283	}	1687	}
		1688
		1689	req->flags |= FLAG_PTR2_FREE;
		1690	req->sv1 = newSVsv (fh_or_path);
1284		1691
1285	if (SvPOK (fh_or_path))	1692	if (SvPOK (fh_or_path))
1286	{	1693	{
1287	req->type = ix;	1694	req->type = ix;
1288	req->data = newSVsv (fh_or_path);
1289	req->dataptr = SvPVbyte_nolen (req->data);	1695	req->ptr1 = SvPVbyte_nolen (req->sv1);
1290	}	1696	}
1291	else	1697	else
1292	{	1698	{
1293	req->type = REQ_FSTAT;	1699	req->type = REQ_FSTAT;
1294	req->fh = newSVsv (fh_or_path);
1295	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1700	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1296	}	1701	}
1297		1702
1298	REQ_SEND;	1703	REQ_SEND;
1299	}	1704	}
1300		1705
1301	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
1302	aio_unlink (pathname,callback=&PL_sv_undef)	1801	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1303	SV * pathname
1304	SV * callback
1305	ALIAS:	1802	ALIAS:
1306	aio_unlink = REQ_UNLINK	1803	aio_unlink = REQ_UNLINK
1307	aio_rmdir = REQ_RMDIR	1804	aio_rmdir = REQ_RMDIR
1308	aio_readdir = REQ_READDIR	1805	aio_readdir = REQ_READDIR
1309	PPCODE:	1806	PPCODE:
1310	{	1807	{
1311	dREQ;	1808	dREQ;
1312		1809
1313	req->type = ix;	1810	req->type = ix;
1314	req->data = newSVsv (pathname);	1811	req->sv1 = newSVsv (pathname);
1315	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;
1316		1822
		1823	req->type = REQ_MKDIR;
		1824	req->sv1 = newSVsv (pathname);
		1825	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1826	req->mode = mode;
		1827
1317	REQ_SEND;	1828	REQ_SEND;
1318	}	1829	}
1319		1830
1320	void	1831	void
1321	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1832	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1322	SV * oldpath
1323	SV * newpath
1324	SV * callback
1325	ALIAS:	1833	ALIAS:
1326	aio_link = REQ_LINK	1834	aio_link = REQ_LINK
1327	aio_symlink = REQ_SYMLINK	1835	aio_symlink = REQ_SYMLINK
1328	aio_rename = REQ_RENAME	1836	aio_rename = REQ_RENAME
1329	PPCODE:	1837	PPCODE:
1330	{	1838	{
1331	dREQ;	1839	dREQ;
1332		1840
1333	req->type = ix;	1841	req->type = ix;
1334	req->fh = newSVsv (oldpath);	1842	req->sv2 = newSVsv (oldpath);
1335	req->data2ptr = SvPVbyte_nolen (req->fh);	1843	req->ptr2 = SvPVbyte_nolen (req->sv2);
1336	req->data = newSVsv (newpath);	1844	req->sv1 = newSVsv (newpath);
1337	req->dataptr = SvPVbyte_nolen (req->data);	1845	req->ptr1 = SvPVbyte_nolen (req->sv1);
1338		1846
1339	REQ_SEND;	1847	REQ_SEND;
1340	}	1848	}
1341		1849
1342	void	1850	void
1343	aio_busy (delay,callback=&PL_sv_undef)	1851	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1344	double delay
1345	SV * callback
1346	PPCODE:	1852	PPCODE:
1347	{	1853	{
1348	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;
1349		1870
1350	req->type = REQ_BUSY;	1871	req->type = REQ_BUSY;
1351	req->fd = delay < 0. ? 0 : delay;	1872	req->nv1 = delay < 0. ? 0. : delay;
1352	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1353		1873
1354	REQ_SEND;	1874	REQ_SEND;
1355	}	1875	}
1356		1876
1357	void	1877	void
1358	aio_group (callback=&PL_sv_undef)	1878	aio_group (SV *callback=&PL_sv_undef)
1359	SV * callback
1360	PROTOTYPE: ;$	1879	PROTOTYPE: ;$
1361	PPCODE:	1880	PPCODE:
1362	{	1881	{
1363	dREQ;	1882	dREQ;
1364		1883
1365	req->type = REQ_GROUP;	1884	req->type = REQ_GROUP;
		1885
1366	req_send (req);	1886	req_send (req);
1367
1368	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1887	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1369	}	1888	}
1370		1889
1371	void	1890	void
1372	aio_nop (callback=&PL_sv_undef)	1891	aio_nop (SV *callback=&PL_sv_undef)
1373	SV * callback	1892	ALIAS:
		1893	aio_nop = REQ_NOP
		1894	aio_sync = REQ_SYNC
1374	PPCODE:	1895	PPCODE:
1375	{	1896	{
1376	dREQ;	1897	dREQ;
1377		1898
1378	req->type = REQ_NOP;	1899	req->type = ix;
1379		1900
1380	REQ_SEND;	1901	REQ_SEND;
1381	}	1902	}
1382		1903
1383	void	1904	int
1384	aioreq_pri (int pri = DEFAULT_PRI)	1905	aioreq_pri (int pri = 0)
1385	CODE:	1906	PROTOTYPE: ;$
		1907	CODE:
		1908	RETVAL = next_pri - PRI_BIAS;
		1909	if (items > 0)
		1910	{
1386	if (pri < PRI_MIN) pri = PRI_MIN;	1911	if (pri < PRI_MIN) pri = PRI_MIN;
1387	if (pri > PRI_MAX) pri = PRI_MAX;	1912	if (pri > PRI_MAX) pri = PRI_MAX;
1388	next_pri = pri + PRI_BIAS;	1913	next_pri = pri + PRI_BIAS;
		1914	}
		1915	OUTPUT:
		1916	RETVAL
1389		1917
1390	void	1918	void
1391	aioreq_nice (int nice = 0)	1919	aioreq_nice (int nice = 0)
1392	CODE:	1920	CODE:
1393	nice = next_pri - nice;	1921	nice = next_pri - nice;
1394	if (nice < PRI_MIN) nice = PRI_MIN;	1922	if (nice < PRI_MIN) nice = PRI_MIN;
1395	if (nice > PRI_MAX) nice = PRI_MAX;	1923	if (nice > PRI_MAX) nice = PRI_MAX;
1396	next_pri = nice + PRI_BIAS;	1924	next_pri = nice + PRI_BIAS;
1397		1925
1398	void	1926	void
1399	flush ()	1927	flush ()
1400	PROTOTYPE:	1928	PROTOTYPE:
1401	CODE:	1929	CODE:
…		…
1403	{	1931	{
1404	poll_wait ();	1932	poll_wait ();
1405	poll_cb ();	1933	poll_cb ();
1406	}	1934	}
1407		1935
1408	void	1936	int
1409	poll()	1937	poll()
1410	PROTOTYPE:	1938	PROTOTYPE:
1411	CODE:	1939	CODE:
1412	if (nreqs)
1413	{
1414	poll_wait ();	1940	poll_wait ();
1415	poll_cb ();	1941	RETVAL = poll_cb ();
1416	}	1942	OUTPUT:
		1943	RETVAL
1417		1944
1418	int	1945	int
1419	poll_fileno()	1946	poll_fileno()
1420	PROTOTYPE:	1947	PROTOTYPE:
1421	CODE:	1948	CODE:
…		…
1433		1960
1434	void	1961	void
1435	poll_wait()	1962	poll_wait()
1436	PROTOTYPE:	1963	PROTOTYPE:
1437	CODE:	1964	CODE:
1438	if (nreqs)
1439	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	}
1440		2002
1441	int	2003	int
1442	nreqs()	2004	nreqs()
1443	PROTOTYPE:	2005	PROTOTYPE:
1444	CODE:	2006	CODE:
1445	RETVAL = nreqs;	2007	RETVAL = nreqs;
1446	OUTPUT:	2008	OUTPUT:
1447	RETVAL	2009	RETVAL
1448		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
1449	PROTOTYPES: DISABLE	2037	PROTOTYPES: DISABLE
1450		2038
1451	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2039	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1452		2040
1453	void	2041	void
…		…
1468	PPCODE:	2056	PPCODE:
1469	{	2057	{
1470	int i;	2058	int i;
1471	aio_req req;	2059	aio_req req;
1472		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
1473	if (grp->fd == 2)	2064	if (grp->int1 == 2)
1474	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");
1475		2066
1476	for (i = 1; i < items; ++i )	2067	for (i = 1; i < items; ++i )
1477	{	2068	{
1478	if (GIMME_V != G_VOID)	2069	if (GIMME_V != G_VOID)
…		…
1480		2071
1481	req = SvAIO_REQ (ST (i));	2072	req = SvAIO_REQ (ST (i));
1482		2073
1483	if (req)	2074	if (req)
1484	{	2075	{
1485	++grp->length;	2076	++grp->size;
1486	req->grp = grp;	2077	req->grp = grp;
1487		2078
1488	req->grp_prev = 0;	2079	req->grp_prev = 0;
1489	req->grp_next = grp->grp_first;	2080	req->grp_next = grp->grp_first;
1490		2081
…		…
1495	}	2086	}
1496	}	2087	}
1497	}	2088	}
1498		2089
1499	void	2090	void
		2091	cancel_subs (aio_req_ornot req)
		2092	CODE:
		2093	req_cancel_subs (req);
		2094
		2095	void
1500	result (aio_req grp, ...)	2096	result (aio_req grp, ...)
1501	CODE:	2097	CODE:
1502	{	2098	{
1503	int i;	2099	int i;
		2100	AV *av;
		2101
		2102	grp->errorno = errno;
		2103
1504	AV *av = newAV ();	2104	av = newAV ();
1505		2105
1506	for (i = 1; i < items; ++i )	2106	for (i = 1; i < items; ++i )
1507	av_push (av, newSVsv (ST (i)));	2107	av_push (av, newSVsv (ST (i)));
1508		2108
1509	SvREFCNT_dec (grp->data);	2109	SvREFCNT_dec (grp->sv1);
1510	grp->data = (SV *)av;	2110	grp->sv1 = (SV *)av;
1511	}	2111	}
		2112
		2113	void
		2114	errno (aio_req grp, int errorno = errno)
		2115	CODE:
		2116	grp->errorno = errorno;
1512		2117
1513	void	2118	void
1514	limit (aio_req grp, int limit)	2119	limit (aio_req grp, int limit)
1515	CODE:	2120	CODE:
1516	grp->fd2 = limit;	2121	grp->int2 = limit;
1517	aio_grp_feed (grp);	2122	aio_grp_feed (grp);
1518		2123
1519	void	2124	void
1520	feed (aio_req grp, SV *callback=&PL_sv_undef)	2125	feed (aio_req grp, SV *callback=&PL_sv_undef)
1521	CODE:	2126	CODE:
1522	{	2127	{
1523	SvREFCNT_dec (grp->fh2);	2128	SvREFCNT_dec (grp->sv2);
1524	grp->fh2 = newSVsv (callback);	2129	grp->sv2 = newSVsv (callback);
1525		2130
1526	if (grp->fd2 <= 0)	2131	if (grp->int2 <= 0)
1527	grp->fd2 = 2;	2132	grp->int2 = 2;
1528		2133
1529	aio_grp_feed (grp);	2134	aio_grp_feed (grp);
1530	}	2135	}
1531		2136

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