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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC vs.
Revision 1.102 by root, Sun Jun 3 09:44:17 2007 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"	9	#include "autoconf/config.h"
17		10
18	#include <pthread.h>
19
20	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
21	#include <errno.h>	13	#include <errno.h>
22	#include <sys/time.h>	14	#include <sys/time.h>
23	#include <sys/select.h>	15	#include <sys/select.h>
24	#include <sys/types.h>	16	#include <sys/types.h>
25	#include <sys/stat.h>	17	#include <sys/stat.h>
26	#include <limits.h>	18	#include <limits.h>
27	#include <unistd.h>	19	#include <unistd.h>
28	#include <fcntl.h>	20	#include <fcntl.h>
29	#include <signal.h>	21	#include <signal.h>
30	#include <sched.h>	22	#include <sched.h>
		23	#include <utime.h>
31		24
32	#if HAVE_SENDFILE	25	#if HAVE_SENDFILE
33	# if __linux	26	# if __linux
34	# include <sys/sendfile.h>	27	# include <sys/sendfile.h>
35	# elif __freebsd	28	# elif __freebsd
…		…
42	# else	35	# else
43	# error sendfile support requested but not available	36	# error sendfile support requested but not available
44	# endif	37	# endif
45	#endif	38	#endif
46		39
		40	/* number of seconds after which idle threads exit */
		41	#define IDLE_TIMEOUT 10
		42
47	/* used for struct dirent, AIX doesn't provide it */	43	/* used for struct dirent, AIX doesn't provide it */
48	#ifndef NAME_MAX	44	#ifndef NAME_MAX
49	# define NAME_MAX 4096	45	# define NAME_MAX 4096
50	#endif	46	#endif
51		47
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 */	48	/* buffer size for various temporary buffers */
61	#define AIO_BUFSIZE 65536	49	#define AIO_BUFSIZE 65536
62		50
		51	/* use NV for 32 bit perls as it allows larger offsets */
		52	#if IVSIZE >= 8
		53	# define SvVAL64 SvIV
		54	#else
		55	# define SvVAL64 SvNV
		56	#endif
		57
63	#define dBUF \	58	#define dBUF \
		59	char *aio_buf; \
		60	LOCK (wrklock); \
64	char *aio_buf = malloc (AIO_BUFSIZE); \	61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		62	UNLOCK (wrklock); \
65	if (!aio_buf) \	63	if (!aio_buf) \
66	return -1;	64	return -1;
67		65
68	#define fBUF free (aio_buf)	66	typedef SV SV8; /* byte-sv, used for argument-checking */
69		67
70	enum {	68	enum {
71	REQ_QUIT,	69	REQ_QUIT,
72	REQ_OPEN, REQ_CLOSE,	70	REQ_OPEN, REQ_CLOSE,
73	REQ_READ, REQ_WRITE, REQ_READAHEAD,	71	REQ_READ, REQ_WRITE,
74	REQ_SENDFILE,	72	REQ_READAHEAD, REQ_SENDFILE,
75	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	73	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
		74	REQ_UTIME, REQ_FUTIME,
		75	REQ_CHMOD, REQ_FCHMOD,
		76	REQ_CHOWN, REQ_FCHOWN,
76	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
77	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	78	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
78	REQ_READDIR,	79	REQ_MKNOD, REQ_READDIR,
79	REQ_LINK, REQ_SYMLINK,	80	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
80	REQ_GROUP, REQ_NOP,	81	REQ_GROUP, REQ_NOP,
81	REQ_BUSY,	82	REQ_BUSY,
82	};	83	};
83		84
84	#define AIO_REQ_KLASS "IO::AIO::REQ"	85	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
86		87
87	typedef struct aio_cb	88	typedef struct aio_cb
88	{	89	{
89	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
90		91
91	SV *data, *callback;	92	SV *callback;
92	SV *fh, *fh2;	93	SV *sv1, *sv2;
93	void *dataptr, *data2ptr;	94	void *ptr1, *ptr2;
94	Stat_t *statdata;
95	off_t offset;	95	off_t offs;
96	size_t length;	96	size_t size;
97	ssize_t result;	97	ssize_t result;
		98	double nv1, nv2;
98		99
99	STRLEN dataoffset;	100	STRLEN stroffset;
100	int type;	101	int type;
101	int fd, fd2;	102	int int1, int2, int3;
102	int errorno;	103	int errorno;
103	mode_t mode; /* open */	104	mode_t mode; /* open */
104		105
105	unsigned char flags;	106	unsigned char flags;
106	unsigned char pri;	107	unsigned char pri;
…		…
108	SV *self; /* the perl counterpart of this request, if any */	109	SV *self; /* the perl counterpart of this request, if any */
109	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
110	} aio_cb;	111	} aio_cb;
111		112
112	enum {	113	enum {
113	FLAG_CANCELLED = 0x01,	114	FLAG_CANCELLED = 0x01, /* request was cancelled */
		115	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		116	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
114	};	117	};
115		118
116	typedef aio_cb *aio_req;	119	typedef aio_cb *aio_req;
117	typedef aio_cb *aio_req_ornot;	120	typedef aio_cb *aio_req_ornot;
118		121
…		…
123	DEFAULT_PRI = 0,	126	DEFAULT_PRI = 0,
124	PRI_BIAS = -PRI_MIN,	127	PRI_BIAS = -PRI_MIN,
125	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	128	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
126	};	129	};
127		130
		131	#define AIO_TICKS ((1000000 + 1023) >> 10)
		132
		133	static unsigned int max_poll_time = 0;
		134	static unsigned int max_poll_reqs = 0;
		135
		136	/* calculcate time difference in ~1/AIO_TICKS of a second */
		137	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		138	{
		139	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		140	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		141	}
		142
		143	static thread_t main_tid;
		144	static int main_sig;
		145	static int block_sig_level;
		146
		147	void block_sig ()
		148	{
		149	sigset_t ss;
		150
		151	if (block_sig_level++)
		152	return;
		153
		154	if (!main_sig)
		155	return;
		156
		157	sigemptyset (&ss);
		158	sigaddset (&ss, main_sig);
		159	pthread_sigmask (SIG_BLOCK, &ss, 0);
		160	}
		161
		162	void unblock_sig ()
		163	{
		164	sigset_t ss;
		165
		166	if (--block_sig_level)
		167	return;
		168
		169	if (!main_sig)
		170	return;
		171
		172	sigemptyset (&ss);
		173	sigaddset (&ss, main_sig);
		174	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		175	}
		176
128	static int next_pri = DEFAULT_PRI + PRI_BIAS;	177	static int next_pri = DEFAULT_PRI + PRI_BIAS;
129		178
130	static int started, wanted;	179	static unsigned int started, idle, wanted;
131	static volatile int nreqs;	180
132	static int max_outstanding = 1<<30;	181	/* worker threads management */
		182	static mutex_t wrklock = MUTEX_INIT;
		183
		184	typedef struct worker {
		185	/* locked by wrklock */
		186	struct worker *prev, *next;
		187
		188	thread_t tid;
		189
		190	/* locked by reslock, reqlock or wrklock */
		191	aio_req req; /* currently processed request */
		192	void *dbuf;
		193	DIR *dirp;
		194	} worker;
		195
		196	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		197
		198	static void worker_clear (worker *wrk)
		199	{
		200	if (wrk->dirp)
		201	{
		202	closedir (wrk->dirp);
		203	wrk->dirp = 0;
		204	}
		205
		206	if (wrk->dbuf)
		207	{
		208	free (wrk->dbuf);
		209	wrk->dbuf = 0;
		210	}
		211	}
		212
		213	static void worker_free (worker *wrk)
		214	{
		215	wrk->next->prev = wrk->prev;
		216	wrk->prev->next = wrk->next;
		217
		218	free (wrk);
		219	}
		220
		221	static volatile unsigned int nreqs, nready, npending;
		222	static volatile unsigned int max_idle = 4;
		223	static volatile unsigned int max_outstanding = 0xffffffff;
133	static int respipe [2];	224	static int respipe [2];
134		225
135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	226	static mutex_t reslock = MUTEX_INIT;
136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	227	static mutex_t reqlock = MUTEX_INIT;
		228	static cond_t reqwait = COND_INIT;
		229
		230	#if WORDACCESS_UNSAFE
		231
		232	static unsigned int get_nready ()
		233	{
		234	unsigned int retval;
		235
		236	LOCK (reqlock);
		237	retval = nready;
		238	UNLOCK (reqlock);
		239
		240	return retval;
		241	}
		242
		243	static unsigned int get_npending ()
		244	{
		245	unsigned int retval;
		246
		247	LOCK (reslock);
		248	retval = npending;
		249	UNLOCK (reslock);
		250
		251	return retval;
		252	}
		253
		254	static unsigned int get_nthreads ()
		255	{
		256	unsigned int retval;
		257
		258	LOCK (wrklock);
		259	retval = started;
		260	UNLOCK (wrklock);
		261
		262	return retval;
		263	}
		264
137	#else	265	#else
138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	266
		267	# define get_nready() nready
		268	# define get_npending() npending
		269	# define get_nthreads() started
		270
139	#endif	271	#endif
140
141	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
142	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
143	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
144		272
145	/*	273	/*
146	* a somewhat faster data structure might be nice, but	274	* a somewhat faster data structure might be nice, but
147	* with 8 priorities this actually needs <20 insns	275	* with 8 priorities this actually needs <20 insns
148	* per shift, the most expensive operation.	276	* per shift, the most expensive operation.
…		…
194	}	322	}
195		323
196	abort ();	324	abort ();
197	}	325	}
198		326
		327	static int poll_cb ();
199	static void req_invoke (aio_req req);	328	static int req_invoke (aio_req req);
		329	static void req_destroy (aio_req req);
200	static void req_free (aio_req req);	330	static void req_cancel (aio_req req);
201		331
202	/* must be called at most once */	332	/* must be called at most once */
203	static SV *req_sv (aio_req req, const char *klass)	333	static SV *req_sv (aio_req req, const char *klass)
204	{	334	{
205	if (!req->self)	335	if (!req->self)
…		…
223	return mg ? (aio_req)mg->mg_ptr : 0;	353	return mg ? (aio_req)mg->mg_ptr : 0;
224	}	354	}
225		355
226	static void aio_grp_feed (aio_req grp)	356	static void aio_grp_feed (aio_req grp)
227	{	357	{
		358	block_sig ();
		359
228	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
229	{	361	{
230	int old_len = grp->length;	362	int old_len = grp->size;
231		363
232	if (grp->fh2 && SvOK (grp->fh2))	364	if (grp->sv2 && SvOK (grp->sv2))
233	{	365	{
234	dSP;	366	dSP;
235		367
236	ENTER;	368	ENTER;
237	SAVETMPS;	369	SAVETMPS;
238	PUSHMARK (SP);	370	PUSHMARK (SP);
239	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
240	PUTBACK;	372	PUTBACK;
241	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
242	SPAGAIN;	374	SPAGAIN;
243	FREETMPS;	375	FREETMPS;
244	LEAVE;	376	LEAVE;
245	}	377	}
246		378
247	/* stop if no progress has been made */	379	/* stop if no progress has been made */
248	if (old_len == grp->length)	380	if (old_len == grp->size)
249	{	381	{
250	SvREFCNT_dec (grp->fh2);	382	SvREFCNT_dec (grp->sv2);
251	grp->fh2 = 0;	383	grp->sv2 = 0;
252	break;	384	break;
253	}	385	}
254	}	386	}
		387
		388	unblock_sig ();
255	}	389	}
256		390
257	static void aio_grp_dec (aio_req grp)	391	static void aio_grp_dec (aio_req grp)
258	{	392	{
259	--grp->length;	393	--grp->size;
260		394
261	/* call feeder, if applicable */	395	/* call feeder, if applicable */
262	aio_grp_feed (grp);	396	aio_grp_feed (grp);
263		397
264	/* finish, if done */	398	/* finish, if done */
265	if (!grp->length && grp->fd)	399	if (!grp->size && grp->int1)
266	{	400	{
		401	block_sig ();
		402
267	req_invoke (grp);	403	if (!req_invoke (grp))
		404	{
		405	req_destroy (grp);
		406	unblock_sig ();
		407	croak (0);
		408	}
		409
268	req_free (grp);	410	req_destroy (grp);
		411	unblock_sig ();
269	}	412	}
270	}	413	}
271		414
272	static void poll_wait ()
273	{
274	fd_set rfd;
275
276	while (nreqs)
277	{
278	int size;
279	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
280	pthread_mutex_lock (&reslock);
281	#endif
282	size = res_queue.size;
283	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
284	pthread_mutex_unlock (&reslock);
285	#endif
286
287	if (size)
288	return;
289
290	FD_ZERO(&rfd);
291	FD_SET(respipe [0], &rfd);
292
293	select (respipe [0] + 1, &rfd, 0, 0, 0);
294	}
295	}
296
297	static void req_invoke (aio_req req)	415	static int req_invoke (aio_req req)
298	{	416	{
299	dSP;	417	dSP;
		418
		419	if (req->flags & FLAG_SV2_RO_OFF)
		420	SvREADONLY_off (req->sv2);
300		421
301	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
302	{	423	{
303	errno = req->errorno;
304
305	ENTER;	424	ENTER;
306	SAVETMPS;	425	SAVETMPS;
307	PUSHMARK (SP);	426	PUSHMARK (SP);
308	EXTEND (SP, 1);	427	EXTEND (SP, 1);
309		428
…		…
313	{	432	{
314	SV *rv = &PL_sv_undef;	433	SV *rv = &PL_sv_undef;
315		434
316	if (req->result >= 0)	435	if (req->result >= 0)
317	{	436	{
		437	int i;
318	char *buf = req->data2ptr;	438	char *buf = req->ptr2;
319	AV *av = newAV ();	439	AV *av = newAV ();
320		440
321	while (req->result)	441	av_extend (av, req->result - 1);
		442
		443	for (i = 0; i < req->result; ++i)
322	{	444	{
323	SV *sv = newSVpv (buf, 0);	445	SV *sv = newSVpv (buf, 0);
324		446
325	av_push (av, sv);	447	av_store (av, i, sv);
326	buf += SvCUR (sv) + 1;	448	buf += SvCUR (sv) + 1;
327	req->result--;
328	}	449	}
329		450
330	rv = sv_2mortal (newRV_noinc ((SV *)av));	451	rv = sv_2mortal (newRV_noinc ((SV *)av));
331	}	452	}
332		453
…		…
342	PUSHs (sv_2mortal (newSViv (req->result)));	463	PUSHs (sv_2mortal (newSViv (req->result)));
343	PUTBACK;	464	PUTBACK;
344	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
345	SPAGAIN;	466	SPAGAIN;
346		467
347	fh = SvREFCNT_inc (POPs);	468	fh = POPs;
348
349	PUSHMARK (SP);	469	PUSHMARK (SP);
350	XPUSHs (sv_2mortal (fh));	470	XPUSHs (fh);
351	}	471	}
352	break;	472	break;
353		473
354	case REQ_GROUP:	474	case REQ_GROUP:
355	req->fd = 2; /* mark group as finished */	475	req->int1 = 2; /* mark group as finished */
356		476
357	if (req->data)	477	if (req->sv1)
358	{	478	{
359	int i;	479	int i;
360	AV *av = (AV *)req->data;	480	AV *av = (AV *)req->sv1;
361		481
362	EXTEND (SP, AvFILL (av) + 1);	482	EXTEND (SP, AvFILL (av) + 1);
363	for (i = 0; i <= AvFILL (av); ++i)	483	for (i = 0; i <= AvFILL (av); ++i)
364	PUSHs (*av_fetch (av, i, 0));	484	PUSHs (*av_fetch (av, i, 0));
365	}	485	}
…		…
367		487
368	case REQ_NOP:	488	case REQ_NOP:
369	case REQ_BUSY:	489	case REQ_BUSY:
370	break;	490	break;
371		491
		492	case REQ_READLINK:
		493	if (req->result > 0)
		494	{
		495	SvCUR_set (req->sv2, req->result);
		496	*SvEND (req->sv2) = 0;
		497	PUSHs (req->sv2);
		498	}
		499	break;
		500
		501	case REQ_STAT:
		502	case REQ_LSTAT:
		503	case REQ_FSTAT:
		504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		505	PL_laststatval = req->result;
		506	PL_statcache = *(Stat_t *)(req->ptr2);
		507	PUSHs (sv_2mortal (newSViv (req->result)));
		508	break;
		509
		510	case REQ_READ:
		511	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		512	*SvEND (req->sv2) = 0;
		513	PUSHs (sv_2mortal (newSViv (req->result)));
		514	break;
		515
372	default:	516	default:
373	PUSHs (sv_2mortal (newSViv (req->result)));	517	PUSHs (sv_2mortal (newSViv (req->result)));
374	break;	518	break;
375	}	519	}
376		520
		521	errno = req->errorno;
377		522
378	PUTBACK;	523	PUTBACK;
379	call_sv (req->callback, G_VOID | G_EVAL);	524	call_sv (req->callback, G_VOID | G_EVAL);
380	SPAGAIN;	525	SPAGAIN;
381		526
…		…
395	grp->grp_first = req->grp_next;	540	grp->grp_first = req->grp_next;
396		541
397	aio_grp_dec (grp);	542	aio_grp_dec (grp);
398	}	543	}
399		544
400	if (SvTRUE (ERRSV))	545	return !SvTRUE (ERRSV);
401	{
402	req_free (req);
403	croak (0);
404	}
405	}	546	}
406		547
407	static void req_free (aio_req req)	548	static void req_destroy (aio_req req)
408	{	549	{
409	if (req->self)	550	if (req->self)
410	{	551	{
411	sv_unmagic (req->self, PERL_MAGIC_ext);	552	sv_unmagic (req->self, PERL_MAGIC_ext);
412	SvREFCNT_dec (req->self);	553	SvREFCNT_dec (req->self);
413	}	554	}
414		555
415	SvREFCNT_dec (req->data);
416	SvREFCNT_dec (req->fh);	556	SvREFCNT_dec (req->sv1);
417	SvREFCNT_dec (req->fh2);	557	SvREFCNT_dec (req->sv2);
418	SvREFCNT_dec (req->callback);	558	SvREFCNT_dec (req->callback);
419	Safefree (req->statdata);
420		559
421	if (req->type == REQ_READDIR && req->result >= 0)	560	if (req->flags & FLAG_PTR2_FREE)
422	free (req->data2ptr);	561	free (req->ptr2);
423		562
424	Safefree (req);	563	Safefree (req);
425	}	564	}
426		565
		566	static void req_cancel_subs (aio_req grp)
		567	{
		568	aio_req sub;
		569
		570	if (grp->type != REQ_GROUP)
		571	return;
		572
		573	SvREFCNT_dec (grp->sv2);
		574	grp->sv2 = 0;
		575
		576	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		577	req_cancel (sub);
		578	}
		579
427	static void req_cancel (aio_req req)	580	static void req_cancel (aio_req req)
428	{	581	{
429	req->flags |= FLAG_CANCELLED;	582	req->flags |= FLAG_CANCELLED;
430		583
431	if (req->type == REQ_GROUP)	584	req_cancel_subs (req);
		585	}
		586
		587	static void *aio_proc (void *arg);
		588
		589	static void start_thread (void)
		590	{
		591	worker *wrk = calloc (1, sizeof (worker));
		592
		593	if (!wrk)
		594	croak ("unable to allocate worker thread data");
		595
		596	LOCK (wrklock);
		597
		598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
432	{	599	{
433	aio_req sub;	600	wrk->prev = &wrk_first;
		601	wrk->next = wrk_first.next;
		602	wrk_first.next->prev = wrk;
		603	wrk_first.next = wrk;
		604	++started;
		605	}
		606	else
		607	free (wrk);
434		608
435	for (sub = req->grp_first; sub; sub = sub->grp_next)	609	UNLOCK (wrklock);
436	req_cancel (sub);	610	}
		611
		612	static void maybe_start_thread ()
		613	{
		614	if (get_nthreads () >= wanted)
		615	return;
		616
		617	/* todo: maybe use idle here, but might be less exact */
		618	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		619	return;
		620
		621	start_thread ();
		622	}
		623
		624	static void req_send (aio_req req)
		625	{
		626	block_sig ();
		627
		628	++nreqs;
		629
		630	LOCK (reqlock);
		631	++nready;
		632	reqq_push (&req_queue, req);
		633	COND_SIGNAL (reqwait);
		634	UNLOCK (reqlock);
		635
		636	unblock_sig ();
		637
		638	maybe_start_thread ();
		639	}
		640
		641	static void end_thread (void)
		642	{
		643	aio_req req;
		644
		645	Newz (0, req, 1, aio_cb);
		646
		647	req->type = REQ_QUIT;
		648	req->pri = PRI_MAX + PRI_BIAS;
		649
		650	LOCK (reqlock);
		651	reqq_push (&req_queue, req);
		652	COND_SIGNAL (reqwait);
		653	UNLOCK (reqlock);
		654
		655	LOCK (wrklock);
		656	--started;
		657	UNLOCK (wrklock);
		658	}
		659
		660	static void set_max_idle (int nthreads)
		661	{
		662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
		663	max_idle = nthreads <= 0 ? 1 : nthreads;
		664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
		665	}
		666
		667	static void min_parallel (int nthreads)
		668	{
		669	if (wanted < nthreads)
		670	wanted = nthreads;
		671	}
		672
		673	static void max_parallel (int nthreads)
		674	{
		675	if (wanted > nthreads)
		676	wanted = nthreads;
		677
		678	while (started > wanted)
		679	end_thread ();
		680	}
		681
		682	static void poll_wait ()
		683	{
		684	fd_set rfd;
		685
		686	while (nreqs)
		687	{
		688	int size;
		689	if (WORDACCESS_UNSAFE) LOCK (reslock);
		690	size = res_queue.size;
		691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		692
		693	if (size)
		694	return;
		695
		696	maybe_start_thread ();
		697
		698	FD_ZERO(&rfd);
		699	FD_SET(respipe [0], &rfd);
		700
		701	select (respipe [0] + 1, &rfd, 0, 0, 0);
437	}	702	}
438	}	703	}
439		704
440	static int poll_cb ()	705	static int poll_cb ()
441	{	706	{
442	dSP;	707	dSP;
443	int count = 0;	708	int count = 0;
		709	int maxreqs = max_poll_reqs;
444	int do_croak = 0;	710	int do_croak = 0;
		711	struct timeval tv_start, tv_now;
445	aio_req req;	712	aio_req req;
		713
		714	if (max_poll_time)
		715	gettimeofday (&tv_start, 0);
		716
		717	block_sig ();
446		718
447	for (;;)	719	for (;;)
448	{	720	{
449	pthread_mutex_lock (&reslock);	721	for (;;)
450	req = reqq_shift (&res_queue);
451
452	if (req)
453	{	722	{
		723	maybe_start_thread ();
		724
		725	LOCK (reslock);
		726	req = reqq_shift (&res_queue);
		727
454	if (!res_queue.size)	728	if (req)
455	{	729	{
		730	--npending;
		731
		732	if (!res_queue.size)
		733	{
456	/* read any signals sent by the worker threads */	734	/* read any signals sent by the worker threads */
457	char buf [32];	735	char buf [4];
458	while (read (respipe [0], buf, 32) == 32)	736	while (read (respipe [0], buf, 4) == 4)
		737	;
459	;	738	}
		739	}
		740
		741	UNLOCK (reslock);
		742
		743	if (!req)
		744	break;
		745
		746	--nreqs;
		747
		748	if (req->type == REQ_GROUP && req->size)
		749	{
		750	req->int1 = 1; /* mark request as delayed */
		751	continue;
		752	}
		753	else
		754	{
		755	if (!req_invoke (req))
		756	{
		757	req_destroy (req);
		758	unblock_sig ();
		759	croak (0);
		760	}
		761
		762	count++;
		763	}
		764
		765	req_destroy (req);
		766
		767	if (maxreqs && !--maxreqs)
		768	break;
		769
		770	if (max_poll_time)
		771	{
		772	gettimeofday (&tv_now, 0);
		773
		774	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		775	break;
460	}	776	}
461	}	777	}
462		778
463	pthread_mutex_unlock (&reslock);	779	if (nreqs <= max_outstanding)
464
465	if (!req)
466	break;	780	break;
467		781
468	--nreqs;	782	poll_wait ();
469		783
470	if (req->type == REQ_QUIT)	784	++maxreqs;
471	started--;
472	else if (req->type == REQ_GROUP && req->length)
473	{
474	req->fd = 1; /* mark request as delayed */
475	continue;
476	}
477	else
478	{
479	if (req->type == REQ_READ)
480	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
481
482	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
483	SvREADONLY_off (req->data);
484
485	if (req->statdata)
486	{
487	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
488	PL_laststatval = req->result;
489	PL_statcache = *(req->statdata);
490	}
491
492	req_invoke (req);
493
494	count++;
495	}
496
497	req_free (req);
498	}	785	}
499		786
		787	unblock_sig ();
500	return count;	788	return count;
501	}
502
503	static void *aio_proc(void *arg);
504
505	static void start_thread (void)
506	{
507	sigset_t fullsigset, oldsigset;
508	pthread_t tid;
509	pthread_attr_t attr;
510
511	pthread_attr_init (&attr);
512	pthread_attr_setstacksize (&attr, STACKSIZE);
513	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
514
515	sigfillset (&fullsigset);
516	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
517
518	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
519	started++;
520
521	sigprocmask (SIG_SETMASK, &oldsigset, 0);
522	}
523
524	static void req_send (aio_req req)
525	{
526	while (started < wanted && nreqs >= started)
527	start_thread ();
528
529	++nreqs;
530
531	pthread_mutex_lock (&reqlock);
532	reqq_push (&req_queue, req);
533	pthread_cond_signal (&reqwait);
534	pthread_mutex_unlock (&reqlock);
535
536	if (nreqs > max_outstanding)
537	for (;;)
538	{
539	poll_cb ();
540
541	if (nreqs <= max_outstanding)
542	break;
543
544	poll_wait ();
545	}
546	}
547
548	static void end_thread (void)
549	{
550	aio_req req;
551
552	Newz (0, req, 1, aio_cb);
553
554	req->type = REQ_QUIT;
555	req->pri = PRI_MAX + PRI_BIAS;
556
557	req_send (req);
558	}
559
560	static void min_parallel (int nthreads)
561	{
562	if (wanted < nthreads)
563	wanted = nthreads;
564	}
565
566	static void max_parallel (int nthreads)
567	{
568	int cur = started;
569
570	if (wanted > nthreads)
571	wanted = nthreads;
572
573	while (cur > wanted)
574	{
575	end_thread ();
576	cur--;
577	}
578
579	while (started > wanted)
580	{
581	poll_wait ();
582	poll_cb ();
583	}
584	}	789	}
585		790
586	static void create_pipe ()	791	static void create_pipe ()
587	{	792	{
588	if (pipe (respipe))	793	if (pipe (respipe))
…		…
605	/*	810	/*
606	* make our pread/pwrite safe against themselves, but not against	811	* make our pread/pwrite safe against themselves, but not against
607	* normal read/write by using a mutex. slows down execution a lot,	812	* normal read/write by using a mutex. slows down execution a lot,
608	* but that's your problem, not mine.	813	* but that's your problem, not mine.
609	*/	814	*/
610	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	815	static mutex_t preadwritelock = MUTEX_INIT;
611		816
612	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	817	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
613	{	818	{
614	ssize_t res;	819	ssize_t res;
615	off_t ooffset;	820	off_t ooffset;
616		821
617	pthread_mutex_lock (&preadwritelock);	822	LOCK (preadwritelock);
618	ooffset = lseek (fd, 0, SEEK_CUR);	823	ooffset = lseek (fd, 0, SEEK_CUR);
619	lseek (fd, offset, SEEK_SET);	824	lseek (fd, offset, SEEK_SET);
620	res = read (fd, buf, count);	825	res = read (fd, buf, count);
621	lseek (fd, ooffset, SEEK_SET);	826	lseek (fd, ooffset, SEEK_SET);
622	pthread_mutex_unlock (&preadwritelock);	827	UNLOCK (preadwritelock);
623		828
624	return res;	829	return res;
625	}	830	}
626		831
627	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	832	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
628	{	833	{
629	ssize_t res;	834	ssize_t res;
630	off_t ooffset;	835	off_t ooffset;
631		836
632	pthread_mutex_lock (&preadwritelock);	837	LOCK (preadwritelock);
633	ooffset = lseek (fd, 0, SEEK_CUR);	838	ooffset = lseek (fd, 0, SEEK_CUR);
634	lseek (fd, offset, SEEK_SET);	839	lseek (fd, offset, SEEK_SET);
635	res = write (fd, buf, count);	840	res = write (fd, buf, count);
636	lseek (fd, offset, SEEK_SET);	841	lseek (fd, offset, SEEK_SET);
637	pthread_mutex_unlock (&preadwritelock);	842	UNLOCK (preadwritelock);
638		843
639	return res;	844	return res;
640	}	845	}
		846	#endif
		847
		848	#ifndef HAVE_FUTIMES
		849
		850	# define utimes(path,times) aio_utimes (path, times)
		851	# define futimes(fd,times) aio_futimes (fd, times)
		852
		853	int aio_utimes (const char *filename, const struct timeval times[2])
		854	{
		855	if (times)
		856	{
		857	struct utimbuf buf;
		858
		859	buf.actime = times[0].tv_sec;
		860	buf.modtime = times[1].tv_sec;
		861
		862	return utime (filename, &buf);
		863	}
		864	else
		865	return utime (filename, 0);
		866	}
		867
		868	int aio_futimes (int fd, const struct timeval tv[2])
		869	{
		870	errno = ENOSYS;
		871	return -1;
		872	}
		873
641	#endif	874	#endif
642		875
643	#if !HAVE_FDATASYNC	876	#if !HAVE_FDATASYNC
644	# define fdatasync fsync	877	# define fdatasync fsync
645	#endif	878	#endif
646		879
647	#if !HAVE_READAHEAD	880	#if !HAVE_READAHEAD
648	# define readahead aio_readahead	881	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
649		882
650	static ssize_t readahead (int fd, off_t offset, size_t count)	883	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
651	{	884	{
652	dBUF;	885	dBUF;
653		886
654	while (count > 0)	887	while (count > 0)
655	{	888	{
…		…
658	pread (fd, aio_buf, len, offset);	891	pread (fd, aio_buf, len, offset);
659	offset += len;	892	offset += len;
660	count -= len;	893	count -= len;
661	}	894	}
662		895
663	fBUF;
664
665	errno = 0;	896	errno = 0;
666	}	897	}
		898
667	#endif	899	#endif
668		900
669	#if !HAVE_READDIR_R	901	#if !HAVE_READDIR_R
670	# define readdir_r aio_readdir_r	902	# define readdir_r aio_readdir_r
671		903
672	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	904	static mutex_t readdirlock = MUTEX_INIT;
673		905
674	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	906	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
675	{	907	{
676	struct dirent *e;	908	struct dirent *e;
677	int errorno;	909	int errorno;
678		910
679	pthread_mutex_lock (&readdirlock);	911	LOCK (readdirlock);
680		912
681	e = readdir (dirp);	913	e = readdir (dirp);
682	errorno = errno;	914	errorno = errno;
683		915
684	if (e)	916	if (e)
…		…
687	strcpy (ent->d_name, e->d_name);	919	strcpy (ent->d_name, e->d_name);
688	}	920	}
689	else	921	else
690	*res = 0;	922	*res = 0;
691		923
692	pthread_mutex_unlock (&readdirlock);	924	UNLOCK (readdirlock);
693		925
694	errno = errorno;	926	errno = errorno;
695	return e ? 0 : -1;	927	return e ? 0 : -1;
696	}	928	}
697	#endif	929	#endif
698		930
699	/* sendfile always needs emulation */	931	/* sendfile always needs emulation */
700	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	932	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
701	{	933	{
702	ssize_t res;	934	ssize_t res;
703		935
704	if (!count)	936	if (!count)
705	return 0;	937	return 0;
…		…
716	{	948	{
717	off_t sbytes;	949	off_t sbytes;
718	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	950	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
719		951
720	if (res < 0 && sbytes)	952	if (res < 0 && sbytes)
721	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	953	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
722	res = sbytes;	954	res = sbytes;
723	}	955	}
724		956
725	# elif __hpux	957	# elif __hpux
726	res = sendfile (ofd, ifd, offset, count, 0, 0);	958	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
782		1014
783	offset += cnt;	1015	offset += cnt;
784	res += cnt;	1016	res += cnt;
785	count -= cnt;	1017	count -= cnt;
786	}	1018	}
787
788	fBUF;
789	}	1019	}
790		1020
791	return res;	1021	return res;
792	}	1022	}
793		1023
794	/* read a full directory */	1024	/* read a full directory */
795	static int scandir_ (const char *path, void **namesp)	1025	static void scandir_ (aio_req req, worker *self)
796	{	1026	{
797	DIR *dirp;	1027	DIR *dirp;
798	union	1028	union
799	{	1029	{
800	struct dirent d;	1030	struct dirent d;
…		…
805	int memlen = 4096;	1035	int memlen = 4096;
806	int memofs = 0;	1036	int memofs = 0;
807	int res = 0;	1037	int res = 0;
808	int errorno;	1038	int errorno;
809		1039
810	dirp = opendir (path);	1040	LOCK (wrklock);
811	if (!dirp)	1041	self->dirp = dirp = opendir (req->ptr1);
812	return -1;
813
814	u = malloc (sizeof (*u));	1042	self->dbuf = u = malloc (sizeof (*u));
		1043	req->flags |= FLAG_PTR2_FREE;
815	names = malloc (memlen);	1044	req->ptr2 = names = malloc (memlen);
		1045	UNLOCK (wrklock);
816		1046
817	if (u && names)	1047	if (dirp && u && names)
818	for (;;)	1048	for (;;)
819	{	1049	{
820	errno = 0;	1050	errno = 0;
821	readdir_r (dirp, &u->d, &entp);	1051	readdir_r (dirp, &u->d, &entp);
822		1052
…		…
832	res++;	1062	res++;
833		1063
834	while (memofs + len > memlen)	1064	while (memofs + len > memlen)
835	{	1065	{
836	memlen *= 2;	1066	memlen *= 2;
		1067	LOCK (wrklock);
837	names = realloc (names, memlen);	1068	req->ptr2 = names = realloc (names, memlen);
		1069	UNLOCK (wrklock);
		1070
838	if (!names)	1071	if (!names)
839	break;	1072	break;
840	}	1073	}
841		1074
842	memcpy (names + memofs, name, len);	1075	memcpy (names + memofs, name, len);
843	memofs += len;	1076	memofs += len;
844	}	1077	}
845	}	1078	}
846		1079
847	errorno = errno;
848	free (u);
849	closedir (dirp);
850
851	if (errorno)	1080	if (errno)
		1081	res = -1;
		1082
		1083	req->result = res;
		1084	}
		1085
		1086	/*****************************************************************************/
		1087
		1088	static void *aio_proc (void *thr_arg)
		1089	{
		1090	aio_req req;
		1091	struct timespec ts;
		1092	worker *self = (worker *)thr_arg;
		1093
		1094	/* try to distribute timeouts somewhat evenly */
		1095	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1096	* (1000000000UL / 1024UL);
		1097
		1098	for (;;)
852	{	1099	{
853	free (names);	1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
854	errno = errorno;
855	res = -1;
856	}
857		1101
858	*namesp = (void *)names;	1102	LOCK (reqlock);
859	return res;
860	}
861
862	/*****************************************************************************/
863
864	static void *aio_proc (void *thr_arg)
865	{
866	aio_req req;
867	int type;
868
869	do
870	{
871	pthread_mutex_lock (&reqlock);
872		1103
873	for (;;)	1104	for (;;)
874	{	1105	{
875	req = reqq_shift (&req_queue);	1106	self->req = req = reqq_shift (&req_queue);
876		1107
877	if (req)	1108	if (req)
878	break;	1109	break;
879		1110
880	pthread_cond_wait (&reqwait, &reqlock);	1111	++idle;
		1112
		1113	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
		1114	== ETIMEDOUT)
		1115	{
		1116	if (idle > max_idle)
		1117	{
		1118	--idle;
		1119	UNLOCK (reqlock);
		1120	LOCK (wrklock);
		1121	--started;
		1122	UNLOCK (wrklock);
		1123	goto quit;
		1124	}
		1125
		1126	/* we are allowed to idle, so do so without any timeout */
		1127	COND_WAIT (reqwait, reqlock);
		1128	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1129	}
		1130
		1131	--idle;
881	}	1132	}
882		1133
883	pthread_mutex_unlock (&reqlock);	1134	--nready;
		1135
		1136	UNLOCK (reqlock);
884		1137
885	errno = 0; /* strictly unnecessary */	1138	errno = 0; /* strictly unnecessary */
886	type = req->type; /* remember type for QUIT check */
887		1139
888	if (!(req->flags & FLAG_CANCELLED))	1140	if (!(req->flags & FLAG_CANCELLED))
889	switch (type)	1141	switch (req->type)
890	{	1142	{
891	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1143	case REQ_READ: req->result = req->offs >= 0
892	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1144	? pread (req->int1, req->ptr1, req->size, req->offs)
		1145	: read (req->int1, req->ptr1, req->size); break;
		1146	case REQ_WRITE: req->result = req->offs >= 0
		1147	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1148	: write (req->int1, req->ptr1, req->size); break;
893		1149
894	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1150	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
895	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1151	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
896		1152
897	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1153	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
898	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1154	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
899	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1155	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
900		1156
		1157	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1158	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1159	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1160	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1161
901	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1162	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
902	case REQ_CLOSE: req->result = close (req->fd); break;	1163	case REQ_CLOSE: req->result = close (req->int1); break;
903	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
904	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1165	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1166	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
905	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
906	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
907	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1169	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1170	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1171	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
908		1172
909	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
910	case REQ_FSYNC: req->result = fsync (req->fd); break;	1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
911	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1175	case REQ_READDIR: scandir_ (req, self); break;
912		1176
913	case REQ_BUSY:	1177	case REQ_BUSY:
914	{	1178	{
915	struct timeval tv;	1179	struct timeval tv;
916		1180
917	tv.tv_sec = req->fd;	1181	tv.tv_sec = req->nv1;
918	tv.tv_usec = req->fd2;	1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
919		1183
920	req->result = select (0, 0, 0, 0, &tv);	1184	req->result = select (0, 0, 0, 0, &tv);
921	}	1185	}
922		1186
		1187	case REQ_UTIME:
		1188	case REQ_FUTIME:
		1189	{
		1190	struct timeval tv[2];
		1191	struct timeval *times;
		1192
		1193	if (req->nv1 != -1. || req->nv2 != -1.)
		1194	{
		1195	tv[0].tv_sec = req->nv1;
		1196	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1197	tv[1].tv_sec = req->nv2;
		1198	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1199
		1200	times = tv;
		1201	}
		1202	else
		1203	times = 0;
		1204
		1205
		1206	req->result = req->type == REQ_FUTIME
		1207	? futimes (req->int1, times)
		1208	: utimes (req->ptr1, times);
		1209	}
		1210
923	case REQ_GROUP:	1211	case REQ_GROUP:
924	case REQ_NOP:	1212	case REQ_NOP:
		1213	break;
		1214
925	case REQ_QUIT:	1215	case REQ_QUIT:
926	break;	1216	goto quit;
927		1217
928	default:	1218	default:
929	req->result = ENOSYS;	1219	req->result = -1;
930	break;	1220	break;
931	}	1221	}
932		1222
933	req->errorno = errno;	1223	req->errorno = errno;
934		1224
935	pthread_mutex_lock (&reslock);	1225	LOCK (reslock);
		1226
		1227	++npending;
936		1228
937	if (!reqq_push (&res_queue, req))	1229	if (!reqq_push (&res_queue, req))
		1230	{
938	/* write a dummy byte to the pipe so fh becomes ready */	1231	/* write a dummy byte to the pipe so fh becomes ready */
939	write (respipe [1], &respipe, 1);	1232	write (respipe [1], &respipe, 1);
940		1233
941	pthread_mutex_unlock (&reslock);	1234	/* optionally signal the main thread asynchronously */
		1235	if (main_sig)
		1236	pthread_kill (main_tid, main_sig);
		1237	}
		1238
		1239	self->req = 0;
		1240	worker_clear (self);
		1241
		1242	UNLOCK (reslock);
942	}	1243	}
943	while (type != REQ_QUIT);	1244
		1245	quit:
		1246	LOCK (wrklock);
		1247	worker_free (self);
		1248	UNLOCK (wrklock);
944		1249
945	return 0;	1250	return 0;
946	}	1251	}
947		1252
948	/*****************************************************************************/	1253	/*****************************************************************************/
949		1254
950	static void atfork_prepare (void)	1255	static void atfork_prepare (void)
951	{	1256	{
952	pthread_mutex_lock (&reqlock);	1257	LOCK (wrklock);
953	pthread_mutex_lock (&reslock);	1258	LOCK (reqlock);
		1259	LOCK (reslock);
954	#if !HAVE_PREADWRITE	1260	#if !HAVE_PREADWRITE
955	pthread_mutex_lock (&preadwritelock);	1261	LOCK (preadwritelock);
956	#endif	1262	#endif
957	#if !HAVE_READDIR_R	1263	#if !HAVE_READDIR_R
958	pthread_mutex_lock (&readdirlock);	1264	LOCK (readdirlock);
959	#endif	1265	#endif
960	}	1266	}
961		1267
962	static void atfork_parent (void)	1268	static void atfork_parent (void)
963	{	1269	{
964	#if !HAVE_READDIR_R	1270	#if !HAVE_READDIR_R
965	pthread_mutex_unlock (&readdirlock);	1271	UNLOCK (readdirlock);
966	#endif	1272	#endif
967	#if !HAVE_PREADWRITE	1273	#if !HAVE_PREADWRITE
968	pthread_mutex_unlock (&preadwritelock);	1274	UNLOCK (preadwritelock);
969	#endif	1275	#endif
970	pthread_mutex_unlock (&reslock);	1276	UNLOCK (reslock);
971	pthread_mutex_unlock (&reqlock);	1277	UNLOCK (reqlock);
		1278	UNLOCK (wrklock);
972	}	1279	}
973		1280
974	static void atfork_child (void)	1281	static void atfork_child (void)
975	{	1282	{
976	aio_req prv;	1283	aio_req prv;
977		1284
978	started = 0;
979
980	while (prv = reqq_shift (&req_queue))	1285	while (prv = reqq_shift (&req_queue))
981	req_free (prv);	1286	req_destroy (prv);
982		1287
983	while (prv = reqq_shift (&res_queue))	1288	while (prv = reqq_shift (&res_queue))
984	req_free (prv);	1289	req_destroy (prv);
985		1290
		1291	while (wrk_first.next != &wrk_first)
		1292	{
		1293	worker *wrk = wrk_first.next;
		1294
		1295	if (wrk->req)
		1296	req_destroy (wrk->req);
		1297
		1298	worker_clear (wrk);
		1299	worker_free (wrk);
		1300	}
		1301
		1302	started = 0;
		1303	idle = 0;
		1304	nreqs = 0;
		1305	nready = 0;
		1306	npending = 0;
		1307
986	close (respipe [0]);	1308	close (respipe [0]);
987	close (respipe [1]);	1309	close (respipe [1]);
988	create_pipe ();	1310	create_pipe ();
989		1311
990	atfork_parent ();	1312	atfork_parent ();
…		…
1016	PROTOTYPES: ENABLE	1338	PROTOTYPES: ENABLE
1017		1339
1018	BOOT:	1340	BOOT:
1019	{	1341	{
1020	HV *stash = gv_stashpv ("IO::AIO", 1);	1342	HV *stash = gv_stashpv ("IO::AIO", 1);
		1343
1021	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1022	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1023	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1024		1351
1025	create_pipe ();	1352	create_pipe ();
1026	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1027	}	1354	}
1028		1355
1029	void	1356	void
1030	min_parallel (nthreads)	1357	max_poll_reqs (int nreqs)
1031	int nthreads
1032	PROTOTYPE: $	1358	PROTOTYPE: $
		1359	CODE:
		1360	max_poll_reqs = nreqs;
1033		1361
1034	void	1362	void
1035	max_parallel (nthreads)	1363	max_poll_time (double nseconds)
1036	int nthreads
1037	PROTOTYPE: $	1364	PROTOTYPE: $
		1365	CODE:
		1366	max_poll_time = nseconds * AIO_TICKS;
		1367
		1368	void
		1369	min_parallel (int nthreads)
		1370	PROTOTYPE: $
		1371
		1372	void
		1373	max_parallel (int nthreads)
		1374	PROTOTYPE: $
		1375
		1376	void
		1377	max_idle (int nthreads)
		1378	PROTOTYPE: $
		1379	CODE:
		1380	set_max_idle (nthreads);
1038		1381
1039	int	1382	int
1040	max_outstanding (nreqs)	1383	max_outstanding (int maxreqs)
1041	int nreqs	1384	PROTOTYPE: $
1042	PROTOTYPE: $
1043	CODE:	1385	CODE:
1044	RETVAL = max_outstanding;	1386	RETVAL = max_outstanding;
1045	max_outstanding = nreqs;	1387	max_outstanding = maxreqs;
		1388	OUTPUT:
		1389	RETVAL
1046		1390
1047	void	1391	void
1048	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1392	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1049	SV * pathname
1050	int flags
1051	int mode
1052	SV * callback
1053	PROTOTYPE: $$$;$	1393	PROTOTYPE: $$$;$
1054	PPCODE:	1394	PPCODE:
1055	{	1395	{
1056	dREQ;	1396	dREQ;
1057		1397
1058	req->type = REQ_OPEN;	1398	req->type = REQ_OPEN;
1059	req->data = newSVsv (pathname);	1399	req->sv1 = newSVsv (pathname);
1060	req->dataptr = SvPVbyte_nolen (req->data);	1400	req->ptr1 = SvPVbyte_nolen (req->sv1);
1061	req->fd = flags;	1401	req->int1 = flags;
1062	req->mode = mode;	1402	req->mode = mode;
1063		1403
1064	REQ_SEND;	1404	REQ_SEND;
1065	}	1405	}
1066		1406
1067	void	1407	void
1068	aio_close (fh,callback=&PL_sv_undef)	1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1069	SV * fh
1070	SV * callback
1071	PROTOTYPE: $;$	1409	PROTOTYPE: $;$
1072	ALIAS:	1410	ALIAS:
1073	aio_close = REQ_CLOSE	1411	aio_close = REQ_CLOSE
1074	aio_fsync = REQ_FSYNC	1412	aio_fsync = REQ_FSYNC
1075	aio_fdatasync = REQ_FDATASYNC	1413	aio_fdatasync = REQ_FDATASYNC
1076	PPCODE:	1414	PPCODE:
1077	{	1415	{
1078	dREQ;	1416	dREQ;
1079		1417
1080	req->type = ix;	1418	req->type = ix;
1081	req->fh = newSVsv (fh);	1419	req->sv1 = newSVsv (fh);
1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1083		1421
1084	REQ_SEND (req);	1422	REQ_SEND (req);
1085	}	1423	}
1086		1424
1087	void	1425	void
1088	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1426	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1089	SV * fh
1090	UV offset
1091	UV length
1092	SV * data
1093	UV dataoffset
1094	SV * callback
1095	ALIAS:	1427	ALIAS:
1096	aio_read = REQ_READ	1428	aio_read = REQ_READ
1097	aio_write = REQ_WRITE	1429	aio_write = REQ_WRITE
1098	PROTOTYPE: $$$$$;$	1430	PROTOTYPE: $$$$$;$
1099	PPCODE:	1431	PPCODE:
1100	{	1432	{
1101	aio_req req;
1102	STRLEN svlen;	1433	STRLEN svlen;
1103	char *svptr = SvPVbyte (data, svlen);	1434	char *svptr = SvPVbyte (data, svlen);
		1435	UV len = SvUV (length);
1104		1436
1105	SvUPGRADE (data, SVt_PV);	1437	SvUPGRADE (data, SVt_PV);
1106	SvPOK_on (data);	1438	SvPOK_on (data);
1107		1439
1108	if (dataoffset < 0)	1440	if (dataoffset < 0)
1109	dataoffset += svlen;	1441	dataoffset += svlen;
1110		1442
1111	if (dataoffset < 0 || dataoffset > svlen)	1443	if (dataoffset < 0 || dataoffset > svlen)
1112	croak ("data offset outside of string");	1444	croak ("dataoffset outside of data scalar");
1113		1445
1114	if (ix == REQ_WRITE)	1446	if (ix == REQ_WRITE)
1115	{	1447	{
1116	/* write: check length and adjust. */	1448	/* write: check length and adjust. */
1117	if (length < 0 || length + dataoffset > svlen)	1449	if (!SvOK (length) || len + dataoffset > svlen)
1118	length = svlen - dataoffset;	1450	len = svlen - dataoffset;
1119	}	1451	}
1120	else	1452	else
1121	{	1453	{
1122	/* read: grow scalar as necessary */	1454	/* read: grow scalar as necessary */
1123	svptr = SvGROW (data, length + dataoffset);	1455	svptr = SvGROW (data, len + dataoffset + 1);
1124	}	1456	}
1125		1457
1126	if (length < 0)	1458	if (len < 0)
1127	croak ("length must not be negative");	1459	croak ("length must not be negative");
1128		1460
1129	{	1461	{
1130	dREQ;	1462	dREQ;
1131		1463
1132	req->type = ix;	1464	req->type = ix;
1133	req->fh = newSVsv (fh);	1465	req->sv1 = newSVsv (fh);
1134	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1466	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1135	: IoOFP (sv_2io (fh)));	1467	: IoOFP (sv_2io (fh)));
		1468	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1136	req->offset = offset;	1469	req->size = len;
1137	req->length = length;
1138	req->data = SvREFCNT_inc (data);	1470	req->sv2 = SvREFCNT_inc (data);
1139	req->dataptr = (char *)svptr + dataoffset;	1471	req->ptr1 = (char *)svptr + dataoffset;
		1472	req->stroffset = dataoffset;
1140		1473
1141	if (!SvREADONLY (data))	1474	if (!SvREADONLY (data))
1142	{	1475	{
1143	SvREADONLY_on (data);	1476	SvREADONLY_on (data);
1144	req->data2ptr = (void *)data;	1477	req->flags |= FLAG_SV2_RO_OFF;
1145	}	1478	}
1146		1479
1147	REQ_SEND;	1480	REQ_SEND;
1148	}	1481	}
1149	}	1482	}
1150		1483
1151	void	1484	void
		1485	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1486	PROTOTYPE: $$;$
		1487	PPCODE:
		1488	{
		1489	SV *data;
		1490	dREQ;
		1491
		1492	data = newSV (NAME_MAX);
		1493	SvPOK_on (data);
		1494
		1495	req->type = REQ_READLINK;
		1496	req->sv1 = newSVsv (path);
		1497	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1498	req->sv2 = data;
		1499	req->ptr1 = SvPVbyte_nolen (data);
		1500
		1501	REQ_SEND;
		1502	}
		1503
		1504	void
1152	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1505	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1153	SV * out_fh
1154	SV * in_fh
1155	UV in_offset
1156	UV length
1157	SV * callback
1158	PROTOTYPE: $$$$;$	1506	PROTOTYPE: $$$$;$
1159	PPCODE:	1507	PPCODE:
1160	{	1508	{
1161	dREQ;	1509	dREQ;
1162		1510
1163	req->type = REQ_SENDFILE;	1511	req->type = REQ_SENDFILE;
1164	req->fh = newSVsv (out_fh);	1512	req->sv1 = newSVsv (out_fh);
1165	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1513	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1166	req->fh2 = newSVsv (in_fh);	1514	req->sv2 = newSVsv (in_fh);
1167	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1515	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1168	req->offset = in_offset;	1516	req->offs = SvVAL64 (in_offset);
1169	req->length = length;	1517	req->size = length;
1170		1518
1171	REQ_SEND;	1519	REQ_SEND;
1172	}	1520	}
1173		1521
1174	void	1522	void
1175	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1523	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1176	SV * fh
1177	UV offset
1178	IV length
1179	SV * callback
1180	PROTOTYPE: $$$;$	1524	PROTOTYPE: $$$;$
1181	PPCODE:	1525	PPCODE:
1182	{	1526	{
1183	dREQ;	1527	dREQ;
1184		1528
1185	req->type = REQ_READAHEAD;	1529	req->type = REQ_READAHEAD;
1186	req->fh = newSVsv (fh);	1530	req->sv1 = newSVsv (fh);
1187	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1531	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1188	req->offset = offset;	1532	req->offs = SvVAL64 (offset);
1189	req->length = length;	1533	req->size = length;
1190		1534
1191	REQ_SEND;	1535	REQ_SEND;
1192	}	1536	}
1193		1537
1194	void	1538	void
1195	aio_stat (fh_or_path,callback=&PL_sv_undef)	1539	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1196	SV * fh_or_path
1197	SV * callback
1198	ALIAS:	1540	ALIAS:
1199	aio_stat = REQ_STAT	1541	aio_stat = REQ_STAT
1200	aio_lstat = REQ_LSTAT	1542	aio_lstat = REQ_LSTAT
1201	PPCODE:	1543	PPCODE:
1202	{	1544	{
1203	dREQ;	1545	dREQ;
1204		1546
1205	New (0, req->statdata, 1, Stat_t);	1547	req->ptr2 = malloc (sizeof (Stat_t));
1206	if (!req->statdata)	1548	if (!req->ptr2)
1207	{	1549	{
1208	req_free (req);	1550	req_destroy (req);
1209	croak ("out of memory during aio_req->statdata allocation");	1551	croak ("out of memory during aio_stat statdata allocation");
1210	}	1552	}
		1553
		1554	req->flags |= FLAG_PTR2_FREE;
		1555	req->sv1 = newSVsv (fh_or_path);
1211		1556
1212	if (SvPOK (fh_or_path))	1557	if (SvPOK (fh_or_path))
1213	{	1558	{
1214	req->type = ix;	1559	req->type = ix;
1215	req->data = newSVsv (fh_or_path);
1216	req->dataptr = SvPVbyte_nolen (req->data);	1560	req->ptr1 = SvPVbyte_nolen (req->sv1);
1217	}	1561	}
1218	else	1562	else
1219	{	1563	{
1220	req->type = REQ_FSTAT;	1564	req->type = REQ_FSTAT;
1221	req->fh = newSVsv (fh_or_path);
1222	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1565	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1223	}	1566	}
1224		1567
1225	REQ_SEND;	1568	REQ_SEND;
1226	}	1569	}
1227		1570
1228	void	1571	void
		1572	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1573	PPCODE:
		1574	{
		1575	dREQ;
		1576
		1577	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1578	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1579	req->sv1 = newSVsv (fh_or_path);
		1580
		1581	if (SvPOK (fh_or_path))
		1582	{
		1583	req->type = REQ_UTIME;
		1584	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1585	}
		1586	else
		1587	{
		1588	req->type = REQ_FUTIME;
		1589	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1590	}
		1591
		1592	REQ_SEND;
		1593	}
		1594
		1595	void
		1596	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1597	PPCODE:
		1598	{
		1599	dREQ;
		1600
		1601	req->mode = mode;
		1602	req->sv1 = newSVsv (fh_or_path);
		1603
		1604	if (SvPOK (fh_or_path))
		1605	{
		1606	req->type = REQ_CHMOD;
		1607	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1608	}
		1609	else
		1610	{
		1611	req->type = REQ_FCHMOD;
		1612	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1613	}
		1614
		1615	REQ_SEND;
		1616	}
		1617
		1618	void
		1619	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1620	PPCODE:
		1621	{
		1622	dREQ;
		1623
		1624	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1625	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1626	req->sv1 = newSVsv (fh_or_path);
		1627
		1628	if (SvPOK (fh_or_path))
		1629	{
		1630	req->type = REQ_CHOWN;
		1631	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1632	}
		1633	else
		1634	{
		1635	req->type = REQ_FCHOWN;
		1636	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1637	}
		1638
		1639	REQ_SEND;
		1640	}
		1641
		1642	void
1229	aio_unlink (pathname,callback=&PL_sv_undef)	1643	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1230	SV * pathname
1231	SV * callback
1232	ALIAS:	1644	ALIAS:
1233	aio_unlink = REQ_UNLINK	1645	aio_unlink = REQ_UNLINK
1234	aio_rmdir = REQ_RMDIR	1646	aio_rmdir = REQ_RMDIR
1235	aio_readdir = REQ_READDIR	1647	aio_readdir = REQ_READDIR
1236	PPCODE:	1648	PPCODE:
1237	{	1649	{
1238	dREQ;	1650	dREQ;
1239		1651
1240	req->type = ix;	1652	req->type = ix;
1241	req->data = newSVsv (pathname);	1653	req->sv1 = newSVsv (pathname);
1242	req->dataptr = SvPVbyte_nolen (req->data);	1654	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1655
		1656	REQ_SEND;
		1657	}
		1658
		1659	void
		1660	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1661	PPCODE:
		1662	{
		1663	dREQ;
1243		1664
		1665	req->type = REQ_MKDIR;
		1666	req->sv1 = newSVsv (pathname);
		1667	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1668	req->mode = mode;
		1669
1244	REQ_SEND;	1670	REQ_SEND;
1245	}	1671	}
1246		1672
1247	void	1673	void
1248	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1674	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1249	SV * oldpath
1250	SV * newpath
1251	SV * callback
1252	ALIAS:	1675	ALIAS:
1253	aio_link = REQ_LINK	1676	aio_link = REQ_LINK
1254	aio_symlink = REQ_SYMLINK	1677	aio_symlink = REQ_SYMLINK
1255	aio_rename = REQ_RENAME	1678	aio_rename = REQ_RENAME
1256	PPCODE:	1679	PPCODE:
1257	{	1680	{
1258	dREQ;	1681	dREQ;
1259		1682
1260	req->type = ix;	1683	req->type = ix;
1261	req->fh = newSVsv (oldpath);	1684	req->sv2 = newSVsv (oldpath);
1262	req->data2ptr = SvPVbyte_nolen (req->fh);	1685	req->ptr2 = SvPVbyte_nolen (req->sv2);
1263	req->data = newSVsv (newpath);	1686	req->sv1 = newSVsv (newpath);
1264	req->dataptr = SvPVbyte_nolen (req->data);	1687	req->ptr1 = SvPVbyte_nolen (req->sv1);
1265		1688
1266	REQ_SEND;	1689	REQ_SEND;
1267	}	1690	}
1268		1691
1269	void	1692	void
1270	aio_busy (delay,callback=&PL_sv_undef)	1693	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1271	double delay
1272	SV * callback
1273	PPCODE:	1694	PPCODE:
1274	{	1695	{
1275	dREQ;	1696	dREQ;
		1697
		1698	req->type = REQ_MKNOD;
		1699	req->sv1 = newSVsv (pathname);
		1700	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1701	req->mode = (mode_t)mode;
		1702	req->offs = dev;
		1703
		1704	REQ_SEND;
		1705	}
		1706
		1707	void
		1708	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1709	PPCODE:
		1710	{
		1711	dREQ;
1276		1712
1277	req->type = REQ_BUSY;	1713	req->type = REQ_BUSY;
1278	req->fd = delay < 0. ? 0 : delay;	1714	req->nv1 = delay < 0. ? 0. : delay;
1279	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1280		1715
1281	REQ_SEND;	1716	REQ_SEND;
1282	}	1717	}
1283		1718
1284	void	1719	void
1285	aio_group (callback=&PL_sv_undef)	1720	aio_group (SV *callback=&PL_sv_undef)
1286	SV * callback
1287	PROTOTYPE: ;$	1721	PROTOTYPE: ;$
1288	PPCODE:	1722	PPCODE:
1289	{	1723	{
1290	dREQ;	1724	dREQ;
1291		1725
1292	req->type = REQ_GROUP;	1726	req->type = REQ_GROUP;
		1727
1293	req_send (req);	1728	req_send (req);
1294
1295	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1729	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1296	}	1730	}
1297		1731
1298	void	1732	void
1299	aio_nop (callback=&PL_sv_undef)	1733	aio_nop (SV *callback=&PL_sv_undef)
1300	SV * callback
1301	PPCODE:	1734	PPCODE:
1302	{	1735	{
1303	dREQ;	1736	dREQ;
1304		1737
1305	req->type = REQ_NOP;	1738	req->type = REQ_NOP;
1306		1739
1307	REQ_SEND;	1740	REQ_SEND;
1308	}	1741	}
1309		1742
1310	void	1743	int
1311	aioreq_pri (int pri = DEFAULT_PRI)	1744	aioreq_pri (int pri = 0)
1312	CODE:	1745	PROTOTYPE: ;$
		1746	CODE:
		1747	RETVAL = next_pri - PRI_BIAS;
		1748	if (items > 0)
		1749	{
1313	if (pri < PRI_MIN) pri = PRI_MIN;	1750	if (pri < PRI_MIN) pri = PRI_MIN;
1314	if (pri > PRI_MAX) pri = PRI_MAX;	1751	if (pri > PRI_MAX) pri = PRI_MAX;
1315	next_pri = pri + PRI_BIAS;	1752	next_pri = pri + PRI_BIAS;
		1753	}
		1754	OUTPUT:
		1755	RETVAL
1316		1756
1317	void	1757	void
1318	aioreq_nice (int nice = 0)	1758	aioreq_nice (int nice = 0)
1319	CODE:	1759	CODE:
1320	nice = next_pri - nice;	1760	nice = next_pri - nice;
1321	if (nice < PRI_MIN) nice = PRI_MIN;	1761	if (nice < PRI_MIN) nice = PRI_MIN;
1322	if (nice > PRI_MAX) nice = PRI_MAX;	1762	if (nice > PRI_MAX) nice = PRI_MAX;
1323	next_pri = nice + PRI_BIAS;	1763	next_pri = nice + PRI_BIAS;
1324		1764
1325	void	1765	void
1326	flush ()	1766	flush ()
1327	PROTOTYPE:	1767	PROTOTYPE:
1328	CODE:	1768	CODE:
…		…
1330	{	1770	{
1331	poll_wait ();	1771	poll_wait ();
1332	poll_cb ();	1772	poll_cb ();
1333	}	1773	}
1334		1774
1335	void	1775	int
1336	poll()	1776	poll()
1337	PROTOTYPE:	1777	PROTOTYPE:
1338	CODE:	1778	CODE:
1339	if (nreqs)
1340	{
1341	poll_wait ();	1779	poll_wait ();
1342	poll_cb ();	1780	RETVAL = poll_cb ();
1343	}	1781	OUTPUT:
		1782	RETVAL
1344		1783
1345	int	1784	int
1346	poll_fileno()	1785	poll_fileno()
1347	PROTOTYPE:	1786	PROTOTYPE:
1348	CODE:	1787	CODE:
…		…
1360		1799
1361	void	1800	void
1362	poll_wait()	1801	poll_wait()
1363	PROTOTYPE:	1802	PROTOTYPE:
1364	CODE:	1803	CODE:
1365	if (nreqs)
1366	poll_wait ();	1804	poll_wait ();
		1805
		1806	void
		1807	setsig (int signum = SIGIO)
		1808	PROTOTYPE: ;$
		1809	CODE:
		1810	{
		1811	if (block_sig_level)
		1812	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1813
		1814	LOCK (reslock);
		1815	main_tid = pthread_self ();
		1816	main_sig = signum;
		1817	UNLOCK (reslock);
		1818
		1819	if (main_sig && npending)
		1820	pthread_kill (main_tid, main_sig);
		1821	}
		1822
		1823	void
		1824	aio_block (SV *cb)
		1825	PROTOTYPE: &
		1826	PPCODE:
		1827	{
		1828	int count;
		1829
		1830	block_sig ();
		1831	PUSHMARK (SP);
		1832	PUTBACK;
		1833	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1834	SPAGAIN;
		1835	unblock_sig ();
		1836
		1837	if (SvTRUE (ERRSV))
		1838	croak (0);
		1839
		1840	XSRETURN (count);
		1841	}
1367		1842
1368	int	1843	int
1369	nreqs()	1844	nreqs()
1370	PROTOTYPE:	1845	PROTOTYPE:
1371	CODE:	1846	CODE:
1372	RETVAL = nreqs;	1847	RETVAL = nreqs;
1373	OUTPUT:	1848	OUTPUT:
1374	RETVAL	1849	RETVAL
1375		1850
		1851	int
		1852	nready()
		1853	PROTOTYPE:
		1854	CODE:
		1855	RETVAL = get_nready ();
		1856	OUTPUT:
		1857	RETVAL
		1858
		1859	int
		1860	npending()
		1861	PROTOTYPE:
		1862	CODE:
		1863	RETVAL = get_npending ();
		1864	OUTPUT:
		1865	RETVAL
		1866
		1867	int
		1868	nthreads()
		1869	PROTOTYPE:
		1870	CODE:
		1871	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1872	RETVAL = started;
		1873	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1874	OUTPUT:
		1875	RETVAL
		1876
1376	PROTOTYPES: DISABLE	1877	PROTOTYPES: DISABLE
1377		1878
1378	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1879	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1379		1880
1380	void	1881	void
…		…
1395	PPCODE:	1896	PPCODE:
1396	{	1897	{
1397	int i;	1898	int i;
1398	aio_req req;	1899	aio_req req;
1399		1900
		1901	if (main_sig && !block_sig_level)
		1902	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1903
1400	if (grp->fd == 2)	1904	if (grp->int1 == 2)
1401	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1905	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1402		1906
1403	for (i = 1; i < items; ++i )	1907	for (i = 1; i < items; ++i )
1404	{	1908	{
1405	if (GIMME_V != G_VOID)	1909	if (GIMME_V != G_VOID)
…		…
1407		1911
1408	req = SvAIO_REQ (ST (i));	1912	req = SvAIO_REQ (ST (i));
1409		1913
1410	if (req)	1914	if (req)
1411	{	1915	{
1412	++grp->length;	1916	++grp->size;
1413	req->grp = grp;	1917	req->grp = grp;
1414		1918
1415	req->grp_prev = 0;	1919	req->grp_prev = 0;
1416	req->grp_next = grp->grp_first;	1920	req->grp_next = grp->grp_first;
1417		1921
…		…
1422	}	1926	}
1423	}	1927	}
1424	}	1928	}
1425		1929
1426	void	1930	void
		1931	cancel_subs (aio_req_ornot req)
		1932	CODE:
		1933	req_cancel_subs (req);
		1934
		1935	void
1427	result (aio_req grp, ...)	1936	result (aio_req grp, ...)
1428	CODE:	1937	CODE:
1429	{	1938	{
1430	int i;	1939	int i;
		1940	AV *av;
		1941
		1942	grp->errorno = errno;
		1943
1431	AV *av = newAV ();	1944	av = newAV ();
1432		1945
1433	for (i = 1; i < items; ++i )	1946	for (i = 1; i < items; ++i )
1434	av_push (av, newSVsv (ST (i)));	1947	av_push (av, newSVsv (ST (i)));
1435		1948
1436	SvREFCNT_dec (grp->data);	1949	SvREFCNT_dec (grp->sv1);
1437	grp->data = (SV *)av;	1950	grp->sv1 = (SV *)av;
1438	}	1951	}
		1952
		1953	void
		1954	errno (aio_req grp, int errorno = errno)
		1955	CODE:
		1956	grp->errorno = errorno;
1439		1957
1440	void	1958	void
1441	limit (aio_req grp, int limit)	1959	limit (aio_req grp, int limit)
1442	CODE:	1960	CODE:
1443	grp->fd2 = limit;	1961	grp->int2 = limit;
1444	aio_grp_feed (grp);	1962	aio_grp_feed (grp);
1445		1963
1446	void	1964	void
1447	feed (aio_req grp, SV *callback=&PL_sv_undef)	1965	feed (aio_req grp, SV *callback=&PL_sv_undef)
1448	CODE:	1966	CODE:
1449	{	1967	{
1450	SvREFCNT_dec (grp->fh2);	1968	SvREFCNT_dec (grp->sv2);
1451	grp->fh2 = newSVsv (callback);	1969	grp->sv2 = newSVsv (callback);
1452		1970
1453	if (grp->fd2 <= 0)	1971	if (grp->int2 <= 0)
1454	grp->fd2 = 2;	1972	grp->int2 = 2;
1455		1973
1456	aio_grp_feed (grp);	1974	aio_grp_feed (grp);
1457	}	1975	}
1458		1976

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