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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.67 by root, Tue Oct 24 03:17:39 2006 UTC vs.
Revision 1.100 by root, Fri Jun 1 06:00:40 2007 UTC

1	#if __linux	1	#include "xthread.h"
2	# define _GNU_SOURCE
3	#endif
4
5	#define _REENTRANT 1
6		2
7	#include <errno.h>	3	#include <errno.h>
8		4
9	#include "EXTERN.h"	5	#include "EXTERN.h"
10	#include "perl.h"	6	#include "perl.h"
11	#include "XSUB.h"	7	#include "XSUB.h"
12		8
13	#include "autoconf/config.h"	9	#include "autoconf/config.h"
14		10
15	#include <pthread.h>
16
17	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
18	#include <errno.h>	13	#include <errno.h>
19	#include <sys/time.h>	14	#include <sys/time.h>
20	#include <sys/select.h>	15	#include <sys/select.h>
21	#include <sys/types.h>	16	#include <sys/types.h>
22	#include <sys/stat.h>	17	#include <sys/stat.h>
23	#include <limits.h>	18	#include <limits.h>
24	#include <unistd.h>	19	#include <unistd.h>
25	#include <fcntl.h>	20	#include <fcntl.h>
26	#include <signal.h>	21	#include <signal.h>
27	#include <sched.h>	22	#include <sched.h>
		23	#include <utime.h>
28		24
29	#if HAVE_SENDFILE	25	#if HAVE_SENDFILE
30	# if __linux	26	# if __linux
31	# include <sys/sendfile.h>	27	# include <sys/sendfile.h>
32	# elif __freebsd	28	# elif __freebsd
…		…
39	# else	35	# else
40	# error sendfile support requested but not available	36	# error sendfile support requested but not available
41	# endif	37	# endif
42	#endif	38	#endif
43		39
		40	/* number of seconds after which idle threads exit */
		41	#define IDLE_TIMEOUT 10
		42
44	/* used for struct dirent, AIX doesn't provide it */	43	/* used for struct dirent, AIX doesn't provide it */
45	#ifndef NAME_MAX	44	#ifndef NAME_MAX
46	# define NAME_MAX 4096	45	# define NAME_MAX 4096
47	#endif	46	#endif
48		47
49	#if __ia64
50	# define STACKSIZE 65536
51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
52	# define STACKSIZE PTHREAD_STACK_MIN
53	#else
54	# define STACKSIZE 16384
55	#endif
56
57	/* buffer size for various temporary buffers */	48	/* buffer size for various temporary buffers */
58	#define AIO_BUFSIZE 65536	49	#define AIO_BUFSIZE 65536
59		50
60	#define dBUF \	51	#define dBUF \
		52	char *aio_buf; \
		53	LOCK (wrklock); \
61	char *aio_buf = malloc (AIO_BUFSIZE); \	54	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		55	UNLOCK (wrklock); \
62	if (!aio_buf) \	56	if (!aio_buf) \
63	return -1;	57	return -1;
64		58
65	#define fBUF free (aio_buf)	59	typedef SV SV8; /* byte-sv, used for argument-checking */
66		60
67	enum {	61	enum {
68	REQ_QUIT,	62	REQ_QUIT,
69	REQ_OPEN, REQ_CLOSE,	63	REQ_OPEN, REQ_CLOSE,
70	REQ_READ, REQ_WRITE, REQ_READAHEAD,	64	REQ_READ, REQ_WRITE, REQ_READAHEAD,
71	REQ_SENDFILE,	65	REQ_SENDFILE,
72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	66	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
		67	REQ_UTIME, REQ_FUTIME, /* must be consecutive */
		68	REQ_CHMOD, REQ_FCHMOD, /* must be consecutive */
		69	REQ_CHOWN, REQ_FCHOWN, /* must be consecutive */
73	REQ_FSYNC, REQ_FDATASYNC,	70	REQ_FSYNC, REQ_FDATASYNC,
74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	71	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
75	REQ_READDIR,	72	REQ_MKNOD, REQ_READDIR,
76	REQ_LINK, REQ_SYMLINK,	73	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
77	REQ_GROUP, REQ_NOP,	74	REQ_GROUP, REQ_NOP,
78	REQ_SLEEP,	75	REQ_BUSY,
79	};	76	};
80		77
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	78	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"	79	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		80
84	typedef struct aio_cb	81	typedef struct aio_cb
85	{	82	{
86	struct aio_cb *volatile next;	83	struct aio_cb *volatile next;
87		84
88	SV *data, *callback;	85	SV *callback;
89	SV *fh, *fh2;	86	SV *sv1, *sv2;
90	void *dataptr, *data2ptr;	87	void *ptr1, *ptr2;
91	Stat_t *statdata;
92	off_t offset;	88	off_t offs;
93	size_t length;	89	size_t size;
94	ssize_t result;	90	ssize_t result;
		91	double nv1, nv2;
95		92
96	STRLEN dataoffset;	93	STRLEN stroffset;
97	int type;	94	int type;
98	int fd, fd2;	95	int int1, int2, int3;
99	int errorno;	96	int errorno;
100	mode_t mode; /* open */	97	mode_t mode; /* open */
101		98
102	unsigned char flags;	99	unsigned char flags;
103	unsigned char pri;	100	unsigned char pri;
…		…
105	SV *self; /* the perl counterpart of this request, if any */	102	SV *self; /* the perl counterpart of this request, if any */
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	103	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
107	} aio_cb;	104	} aio_cb;
108		105
109	enum {	106	enum {
110	FLAG_CANCELLED = 0x01,	107	FLAG_CANCELLED = 0x01, /* request was cancelled */
		108	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		109	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
111	};	110	};
112		111
113	typedef aio_cb *aio_req;	112	typedef aio_cb *aio_req;
114	typedef aio_cb *aio_req_ornot;	113	typedef aio_cb *aio_req_ornot;
115		114
…		…
120	DEFAULT_PRI = 0,	119	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,	120	PRI_BIAS = -PRI_MIN,
122	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	121	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
123	};	122	};
124		123
		124	#define AIO_TICKS ((1000000 + 1023) >> 10)
		125
		126	static unsigned int max_poll_time = 0;
		127	static unsigned int max_poll_reqs = 0;
		128
		129	/* calculcate time difference in ~1/AIO_TICKS of a second */
		130	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		131	{
		132	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		133	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		134	}
		135
		136	static thread_t main_tid;
		137	static int main_sig;
		138	static int block_sig_level;
		139
		140	void block_sig ()
		141	{
		142	sigset_t ss;
		143
		144	if (block_sig_level++)
		145	return;
		146
		147	if (!main_sig)
		148	return;
		149
		150	sigemptyset (&ss);
		151	sigaddset (&ss, main_sig);
		152	pthread_sigmask (SIG_BLOCK, &ss, 0);
		153	}
		154
		155	void unblock_sig ()
		156	{
		157	sigset_t ss;
		158
		159	if (--block_sig_level)
		160	return;
		161
		162	if (!main_sig)
		163	return;
		164
		165	sigemptyset (&ss);
		166	sigaddset (&ss, main_sig);
		167	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		168	}
		169
125	static int next_pri = DEFAULT_PRI + PRI_BIAS;	170	static int next_pri = DEFAULT_PRI + PRI_BIAS;
126		171
127	static int started, wanted;	172	static unsigned int started, idle, wanted;
128	static volatile int nreqs;	173
129	static int max_outstanding = 1<<30;	174	/* worker threads management */
		175	static mutex_t wrklock = MUTEX_INIT;
		176
		177	typedef struct worker {
		178	/* locked by wrklock */
		179	struct worker *prev, *next;
		180
		181	thread_t tid;
		182
		183	/* locked by reslock, reqlock or wrklock */
		184	aio_req req; /* currently processed request */
		185	void *dbuf;
		186	DIR *dirp;
		187	} worker;
		188
		189	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		190
		191	static void worker_clear (worker *wrk)
		192	{
		193	if (wrk->dirp)
		194	{
		195	closedir (wrk->dirp);
		196	wrk->dirp = 0;
		197	}
		198
		199	if (wrk->dbuf)
		200	{
		201	free (wrk->dbuf);
		202	wrk->dbuf = 0;
		203	}
		204	}
		205
		206	static void worker_free (worker *wrk)
		207	{
		208	wrk->next->prev = wrk->prev;
		209	wrk->prev->next = wrk->next;
		210
		211	free (wrk);
		212	}
		213
		214	static volatile unsigned int nreqs, nready, npending;
		215	static volatile unsigned int max_idle = 4;
		216	static volatile unsigned int max_outstanding = 0xffffffff;
130	static int respipe [2];	217	static int respipe [2];
131		218
132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	219	static mutex_t reslock = MUTEX_INIT;
133	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	220	static mutex_t reqlock = MUTEX_INIT;
		221	static cond_t reqwait = COND_INIT;
		222
		223	#if WORDACCESS_UNSAFE
		224
		225	static unsigned int get_nready ()
		226	{
		227	unsigned int retval;
		228
		229	LOCK (reqlock);
		230	retval = nready;
		231	UNLOCK (reqlock);
		232
		233	return retval;
		234	}
		235
		236	static unsigned int get_npending ()
		237	{
		238	unsigned int retval;
		239
		240	LOCK (reslock);
		241	retval = npending;
		242	UNLOCK (reslock);
		243
		244	return retval;
		245	}
		246
		247	static unsigned int get_nthreads ()
		248	{
		249	unsigned int retval;
		250
		251	LOCK (wrklock);
		252	retval = started;
		253	UNLOCK (wrklock);
		254
		255	return retval;
		256	}
		257
134	#else	258	#else
135	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	259
		260	# define get_nready() nready
		261	# define get_npending() npending
		262	# define get_nthreads() started
		263
136	#endif	264	#endif
137
138	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
139	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
140	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
141		265
142	/*	266	/*
143	* a somewhat faster data structure might be nice, but	267	* a somewhat faster data structure might be nice, but
144	* with 8 priorities this actually needs <20 insns	268	* with 8 priorities this actually needs <20 insns
145	* per shift, the most expensive operation.	269	* per shift, the most expensive operation.
…		…
191	}	315	}
192		316
193	abort ();	317	abort ();
194	}	318	}
195		319
		320	static int poll_cb ();
196	static void req_invoke (aio_req req);	321	static int req_invoke (aio_req req);
197	static void req_free (aio_req req);	322	static void req_free (aio_req req);
		323	static void req_cancel (aio_req req);
198		324
199	/* must be called at most once */	325	/* must be called at most once */
200	static SV *req_sv (aio_req req, const char *klass)	326	static SV *req_sv (aio_req req, const char *klass)
201	{	327	{
202	if (!req->self)	328	if (!req->self)
…		…
220	return mg ? (aio_req)mg->mg_ptr : 0;	346	return mg ? (aio_req)mg->mg_ptr : 0;
221	}	347	}
222		348
223	static void aio_grp_feed (aio_req grp)	349	static void aio_grp_feed (aio_req grp)
224	{	350	{
		351	block_sig ();
		352
225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
226	{	354	{
227	int old_len = grp->length;	355	int old_len = grp->size;
228		356
229	if (grp->fh2 && SvOK (grp->fh2))	357	if (grp->sv2 && SvOK (grp->sv2))
230	{	358	{
231	dSP;	359	dSP;
232		360
233	ENTER;	361	ENTER;
234	SAVETMPS;	362	SAVETMPS;
235	PUSHMARK (SP);	363	PUSHMARK (SP);
236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
237	PUTBACK;	365	PUTBACK;
238	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
239	SPAGAIN;	367	SPAGAIN;
240	FREETMPS;	368	FREETMPS;
241	LEAVE;	369	LEAVE;
242	}	370	}
243		371
244	/* stop if no progress has been made */	372	/* stop if no progress has been made */
245	if (old_len == grp->length)	373	if (old_len == grp->size)
246	{	374	{
247	SvREFCNT_dec (grp->fh2);	375	SvREFCNT_dec (grp->sv2);
248	grp->fh2 = 0;	376	grp->sv2 = 0;
249	break;	377	break;
250	}	378	}
251	}	379	}
		380
		381	unblock_sig ();
252	}	382	}
253		383
254	static void aio_grp_dec (aio_req grp)	384	static void aio_grp_dec (aio_req grp)
255	{	385	{
256	--grp->length;	386	--grp->size;
257		387
258	/* call feeder, if applicable */	388	/* call feeder, if applicable */
259	aio_grp_feed (grp);	389	aio_grp_feed (grp);
260		390
261	/* finish, if done */	391	/* finish, if done */
262	if (!grp->length && grp->fd)	392	if (!grp->size && grp->int1)
263	{	393	{
		394	block_sig ();
		395
264	req_invoke (grp);	396	if (!req_invoke (grp))
		397	{
		398	req_free (grp);
		399	unblock_sig ();
		400	croak (0);
		401	}
		402
265	req_free (grp);	403	req_free (grp);
		404	unblock_sig ();
266	}	405	}
267	}	406	}
268		407
269	static void poll_wait ()
270	{
271	fd_set rfd;
272
273	while (nreqs)
274	{
275	int size;
276	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
277	pthread_mutex_lock (&reslock);
278	#endif
279	size = res_queue.size;
280	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
281	pthread_mutex_unlock (&reslock);
282	#endif
283
284	if (size)
285	return;
286
287	FD_ZERO(&rfd);
288	FD_SET(respipe [0], &rfd);
289
290	select (respipe [0] + 1, &rfd, 0, 0, 0);
291	}
292	}
293
294	static void req_invoke (aio_req req)	408	static int req_invoke (aio_req req)
295	{	409	{
296	dSP;	410	dSP;
		411
		412	if (req->flags & FLAG_SV2_RO_OFF)
		413	SvREADONLY_off (req->sv2);
297		414
298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	415	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
299	{	416	{
300	errno = req->errorno;
301
302	ENTER;	417	ENTER;
303	SAVETMPS;	418	SAVETMPS;
304	PUSHMARK (SP);	419	PUSHMARK (SP);
305	EXTEND (SP, 1);	420	EXTEND (SP, 1);
306		421
…		…
310	{	425	{
311	SV *rv = &PL_sv_undef;	426	SV *rv = &PL_sv_undef;
312		427
313	if (req->result >= 0)	428	if (req->result >= 0)
314	{	429	{
		430	int i;
315	char *buf = req->data2ptr;	431	char *buf = req->ptr2;
316	AV *av = newAV ();	432	AV *av = newAV ();
317		433
318	while (req->result)	434	av_extend (av, req->result - 1);
		435
		436	for (i = 0; i < req->result; ++i)
319	{	437	{
320	SV *sv = newSVpv (buf, 0);	438	SV *sv = newSVpv (buf, 0);
321		439
322	av_push (av, sv);	440	av_store (av, i, sv);
323	buf += SvCUR (sv) + 1;	441	buf += SvCUR (sv) + 1;
324	req->result--;
325	}	442	}
326		443
327	rv = sv_2mortal (newRV_noinc ((SV *)av));	444	rv = sv_2mortal (newRV_noinc ((SV *)av));
328	}	445	}
329		446
…		…
339	PUSHs (sv_2mortal (newSViv (req->result)));	456	PUSHs (sv_2mortal (newSViv (req->result)));
340	PUTBACK;	457	PUTBACK;
341	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	458	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
342	SPAGAIN;	459	SPAGAIN;
343		460
344	fh = SvREFCNT_inc (POPs);	461	fh = POPs;
345
346	PUSHMARK (SP);	462	PUSHMARK (SP);
347	XPUSHs (sv_2mortal (fh));	463	XPUSHs (fh);
348	}	464	}
349	break;	465	break;
350		466
351	case REQ_GROUP:	467	case REQ_GROUP:
352	req->fd = 2; /* mark group as finished */	468	req->int1 = 2; /* mark group as finished */
353		469
354	if (req->data)	470	if (req->sv1)
355	{	471	{
356	int i;	472	int i;
357	AV *av = (AV *)req->data;	473	AV *av = (AV *)req->sv1;
358		474
359	EXTEND (SP, AvFILL (av) + 1);	475	EXTEND (SP, AvFILL (av) + 1);
360	for (i = 0; i <= AvFILL (av); ++i)	476	for (i = 0; i <= AvFILL (av); ++i)
361	PUSHs (*av_fetch (av, i, 0));	477	PUSHs (*av_fetch (av, i, 0));
362	}	478	}
363	break;	479	break;
364		480
365	case REQ_NOP:	481	case REQ_NOP:
366	case REQ_SLEEP:	482	case REQ_BUSY:
		483	break;
		484
		485	case REQ_READLINK:
		486	if (req->result > 0)
		487	{
		488	SvCUR_set (req->sv2, req->result);
		489	*SvEND (req->sv2) = 0;
		490	PUSHs (req->sv2);
		491	}
		492	break;
		493
		494	case REQ_STAT:
		495	case REQ_LSTAT:
		496	case REQ_FSTAT:
		497	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		498	PL_laststatval = req->result;
		499	PL_statcache = *(Stat_t *)(req->ptr2);
		500	PUSHs (sv_2mortal (newSViv (req->result)));
		501	break;
		502
		503	case REQ_READ:
		504	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		505	*SvEND (req->sv2) = 0;
		506	PUSHs (sv_2mortal (newSViv (req->result)));
367	break;	507	break;
368		508
369	default:	509	default:
370	PUSHs (sv_2mortal (newSViv (req->result)));	510	PUSHs (sv_2mortal (newSViv (req->result)));
371	break;	511	break;
372	}	512	}
373		513
		514	errno = req->errorno;
374		515
375	PUTBACK;	516	PUTBACK;
376	call_sv (req->callback, G_VOID | G_EVAL);	517	call_sv (req->callback, G_VOID | G_EVAL);
377	SPAGAIN;	518	SPAGAIN;
378		519
…		…
392	grp->grp_first = req->grp_next;	533	grp->grp_first = req->grp_next;
393		534
394	aio_grp_dec (grp);	535	aio_grp_dec (grp);
395	}	536	}
396		537
397	if (SvTRUE (ERRSV))	538	return !SvTRUE (ERRSV);
398	{
399	req_free (req);
400	croak (0);
401	}
402	}	539	}
403		540
404	static void req_free (aio_req req)	541	static void req_free (aio_req req)
405	{	542	{
406	if (req->self)	543	if (req->self)
407	{	544	{
408	sv_unmagic (req->self, PERL_MAGIC_ext);	545	sv_unmagic (req->self, PERL_MAGIC_ext);
409	SvREFCNT_dec (req->self);	546	SvREFCNT_dec (req->self);
410	}	547	}
411		548
412	SvREFCNT_dec (req->data);
413	SvREFCNT_dec (req->fh);	549	SvREFCNT_dec (req->sv1);
414	SvREFCNT_dec (req->fh2);	550	SvREFCNT_dec (req->sv2);
415	SvREFCNT_dec (req->callback);	551	SvREFCNT_dec (req->callback);
416	Safefree (req->statdata);
417		552
418	if (req->type == REQ_READDIR && req->result >= 0)	553	if (req->flags & FLAG_PTR2_FREE)
419	free (req->data2ptr);	554	free (req->ptr2);
420		555
421	Safefree (req);	556	Safefree (req);
422	}	557	}
423		558
		559	static void req_cancel_subs (aio_req grp)
		560	{
		561	aio_req sub;
		562
		563	if (grp->type != REQ_GROUP)
		564	return;
		565
		566	SvREFCNT_dec (grp->sv2);
		567	grp->sv2 = 0;
		568
		569	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		570	req_cancel (sub);
		571	}
		572
424	static void req_cancel (aio_req req)	573	static void req_cancel (aio_req req)
425	{	574	{
426	req->flags |= FLAG_CANCELLED;	575	req->flags |= FLAG_CANCELLED;
427		576
428	if (req->type == REQ_GROUP)	577	req_cancel_subs (req);
		578	}
		579
		580	static void *aio_proc(void *arg);
		581
		582	static void start_thread (void)
		583	{
		584	worker *wrk = calloc (1, sizeof (worker));
		585
		586	if (!wrk)
		587	croak ("unable to allocate worker thread data");
		588
		589	LOCK (wrklock);
		590
		591	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
429	{	592	{
430	aio_req sub;	593	wrk->prev = &wrk_first;
		594	wrk->next = wrk_first.next;
		595	wrk_first.next->prev = wrk;
		596	wrk_first.next = wrk;
		597	++started;
		598	}
		599	else
		600	free (wrk);
431		601
432	for (sub = req->grp_first; sub; sub = sub->grp_next)	602	UNLOCK (wrklock);
433	req_cancel (sub);	603	}
		604
		605	static void maybe_start_thread ()
		606	{
		607	if (get_nthreads () >= wanted)
		608	return;
		609
		610	/* todo: maybe use idle here, but might be less exact */
		611	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		612	return;
		613
		614	start_thread ();
		615	}
		616
		617	static void req_send (aio_req req)
		618	{
		619	block_sig ();
		620
		621	++nreqs;
		622
		623	LOCK (reqlock);
		624	++nready;
		625	reqq_push (&req_queue, req);
		626	COND_SIGNAL (reqwait);
		627	UNLOCK (reqlock);
		628
		629	unblock_sig ();
		630
		631	maybe_start_thread ();
		632	}
		633
		634	static void end_thread (void)
		635	{
		636	aio_req req;
		637
		638	Newz (0, req, 1, aio_cb);
		639
		640	req->type = REQ_QUIT;
		641	req->pri = PRI_MAX + PRI_BIAS;
		642
		643	LOCK (reqlock);
		644	reqq_push (&req_queue, req);
		645	COND_SIGNAL (reqwait);
		646	UNLOCK (reqlock);
		647
		648	LOCK (wrklock);
		649	--started;
		650	UNLOCK (wrklock);
		651	}
		652
		653	static void set_max_idle (int nthreads)
		654	{
		655	if (WORDACCESS_UNSAFE) LOCK (reqlock);
		656	max_idle = nthreads <= 0 ? 1 : nthreads;
		657	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
		658	}
		659
		660	static void min_parallel (int nthreads)
		661	{
		662	if (wanted < nthreads)
		663	wanted = nthreads;
		664	}
		665
		666	static void max_parallel (int nthreads)
		667	{
		668	if (wanted > nthreads)
		669	wanted = nthreads;
		670
		671	while (started > wanted)
		672	end_thread ();
		673	}
		674
		675	static void poll_wait ()
		676	{
		677	fd_set rfd;
		678
		679	while (nreqs)
		680	{
		681	int size;
		682	if (WORDACCESS_UNSAFE) LOCK (reslock);
		683	size = res_queue.size;
		684	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		685
		686	if (size)
		687	return;
		688
		689	maybe_start_thread ();
		690
		691	FD_ZERO(&rfd);
		692	FD_SET(respipe [0], &rfd);
		693
		694	select (respipe [0] + 1, &rfd, 0, 0, 0);
434	}	695	}
435	}	696	}
436		697
437	static int poll_cb ()	698	static int poll_cb ()
438	{	699	{
439	dSP;	700	dSP;
440	int count = 0;	701	int count = 0;
		702	int maxreqs = max_poll_reqs;
441	int do_croak = 0;	703	int do_croak = 0;
		704	struct timeval tv_start, tv_now;
442	aio_req req;	705	aio_req req;
		706
		707	if (max_poll_time)
		708	gettimeofday (&tv_start, 0);
		709
		710	block_sig ();
443		711
444	for (;;)	712	for (;;)
445	{	713	{
446	pthread_mutex_lock (&reslock);	714	for (;;)
447	req = reqq_shift (&res_queue);
448
449	if (req)
450	{	715	{
		716	maybe_start_thread ();
		717
		718	LOCK (reslock);
		719	req = reqq_shift (&res_queue);
		720
451	if (!res_queue.size)	721	if (req)
452	{	722	{
		723	--npending;
		724
		725	if (!res_queue.size)
		726	{
453	/* read any signals sent by the worker threads */	727	/* read any signals sent by the worker threads */
454	char buf [32];	728	char buf [4];
455	while (read (respipe [0], buf, 32) == 32)	729	while (read (respipe [0], buf, 4) == 4)
		730	;
456	;	731	}
		732	}
		733
		734	UNLOCK (reslock);
		735
		736	if (!req)
		737	break;
		738
		739	--nreqs;
		740
		741	if (req->type == REQ_GROUP && req->size)
		742	{
		743	req->int1 = 1; /* mark request as delayed */
		744	continue;
		745	}
		746	else
		747	{
		748	if (!req_invoke (req))
		749	{
		750	req_free (req);
		751	unblock_sig ();
		752	croak (0);
		753	}
		754
		755	count++;
		756	}
		757
		758	req_free (req);
		759
		760	if (maxreqs && !--maxreqs)
		761	break;
		762
		763	if (max_poll_time)
		764	{
		765	gettimeofday (&tv_now, 0);
		766
		767	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		768	break;
457	}	769	}
458	}	770	}
459		771
460	pthread_mutex_unlock (&reslock);	772	if (nreqs <= max_outstanding)
461
462	if (!req)
463	break;	773	break;
464		774
465	--nreqs;	775	poll_wait ();
466		776
467	if (req->type == REQ_QUIT)	777	++maxreqs;
468	started--;
469	else if (req->type == REQ_GROUP && req->length)
470	{
471	req->fd = 1; /* mark request as delayed */
472	continue;
473	}
474	else
475	{
476	if (req->type == REQ_READ)
477	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
478
479	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
480	SvREADONLY_off (req->data);
481
482	if (req->statdata)
483	{
484	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
485	PL_laststatval = req->result;
486	PL_statcache = *(req->statdata);
487	}
488
489	req_invoke (req);
490
491	count++;
492	}
493
494	req_free (req);
495	}	778	}
496		779
		780	unblock_sig ();
497	return count;	781	return count;
498	}
499
500	static void *aio_proc(void *arg);
501
502	static void start_thread (void)
503	{
504	sigset_t fullsigset, oldsigset;
505	pthread_t tid;
506	pthread_attr_t attr;
507
508	pthread_attr_init (&attr);
509	pthread_attr_setstacksize (&attr, STACKSIZE);
510	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
511
512	sigfillset (&fullsigset);
513	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
514
515	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
516	started++;
517
518	sigprocmask (SIG_SETMASK, &oldsigset, 0);
519	}
520
521	static void req_send (aio_req req)
522	{
523	while (started < wanted && nreqs >= started)
524	start_thread ();
525
526	++nreqs;
527
528	pthread_mutex_lock (&reqlock);
529	reqq_push (&req_queue, req);
530	pthread_cond_signal (&reqwait);
531	pthread_mutex_unlock (&reqlock);
532
533	if (nreqs > max_outstanding)
534	for (;;)
535	{
536	poll_cb ();
537
538	if (nreqs <= max_outstanding)
539	break;
540
541	poll_wait ();
542	}
543	}
544
545	static void end_thread (void)
546	{
547	aio_req req;
548
549	Newz (0, req, 1, aio_cb);
550
551	req->type = REQ_QUIT;
552	req->pri = PRI_MAX + PRI_BIAS;
553
554	req_send (req);
555	}
556
557	static void min_parallel (int nthreads)
558	{
559	if (wanted < nthreads)
560	wanted = nthreads;
561	}
562
563	static void max_parallel (int nthreads)
564	{
565	int cur = started;
566
567	if (wanted > nthreads)
568	wanted = nthreads;
569
570	while (cur > wanted)
571	{
572	end_thread ();
573	cur--;
574	}
575
576	while (started > wanted)
577	{
578	poll_wait ();
579	poll_cb ();
580	}
581	}	782	}
582		783
583	static void create_pipe ()	784	static void create_pipe ()
584	{	785	{
585	if (pipe (respipe))	786	if (pipe (respipe))
…		…
602	/*	803	/*
603	* make our pread/pwrite safe against themselves, but not against	804	* make our pread/pwrite safe against themselves, but not against
604	* normal read/write by using a mutex. slows down execution a lot,	805	* normal read/write by using a mutex. slows down execution a lot,
605	* but that's your problem, not mine.	806	* but that's your problem, not mine.
606	*/	807	*/
607	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	808	static mutex_t preadwritelock = MUTEX_INIT;
608		809
609	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	810	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
610	{	811	{
611	ssize_t res;	812	ssize_t res;
612	off_t ooffset;	813	off_t ooffset;
613		814
614	pthread_mutex_lock (&preadwritelock);	815	LOCK (preadwritelock);
615	ooffset = lseek (fd, 0, SEEK_CUR);	816	ooffset = lseek (fd, 0, SEEK_CUR);
616	lseek (fd, offset, SEEK_SET);	817	lseek (fd, offset, SEEK_SET);
617	res = read (fd, buf, count);	818	res = read (fd, buf, count);
618	lseek (fd, ooffset, SEEK_SET);	819	lseek (fd, ooffset, SEEK_SET);
619	pthread_mutex_unlock (&preadwritelock);	820	UNLOCK (preadwritelock);
620		821
621	return res;	822	return res;
622	}	823	}
623		824
624	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	825	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
625	{	826	{
626	ssize_t res;	827	ssize_t res;
627	off_t ooffset;	828	off_t ooffset;
628		829
629	pthread_mutex_lock (&preadwritelock);	830	LOCK (preadwritelock);
630	ooffset = lseek (fd, 0, SEEK_CUR);	831	ooffset = lseek (fd, 0, SEEK_CUR);
631	lseek (fd, offset, SEEK_SET);	832	lseek (fd, offset, SEEK_SET);
632	res = write (fd, buf, count);	833	res = write (fd, buf, count);
633	lseek (fd, offset, SEEK_SET);	834	lseek (fd, offset, SEEK_SET);
634	pthread_mutex_unlock (&preadwritelock);	835	UNLOCK (preadwritelock);
635		836
636	return res;	837	return res;
637	}	838	}
		839	#endif
		840
		841	#ifndef HAVE_FUTIMES
		842
		843	# define utimes(path,times) aio_utimes (path, times)
		844	# define futimes(fd,times) aio_futimes (fd, times)
		845
		846	int aio_utimes (const char *filename, const struct timeval times[2])
		847	{
		848	if (times)
		849	{
		850	struct utimbuf buf;
		851
		852	buf.actime = times[0].tv_sec;
		853	buf.modtime = times[1].tv_sec;
		854
		855	return utime (filename, &buf);
		856	}
		857	else
		858	return utime (filename, 0);
		859	}
		860
		861	int aio_futimes (int fd, const struct timeval tv[2])
		862	{
		863	errno = ENOSYS;
		864	return -1;
		865	}
		866
638	#endif	867	#endif
639		868
640	#if !HAVE_FDATASYNC	869	#if !HAVE_FDATASYNC
641	# define fdatasync fsync	870	# define fdatasync fsync
642	#endif	871	#endif
643		872
644	#if !HAVE_READAHEAD	873	#if !HAVE_READAHEAD
645	# define readahead aio_readahead	874	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
646		875
647	static ssize_t readahead (int fd, off_t offset, size_t count)	876	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
648	{	877	{
649	dBUF;	878	dBUF;
650		879
651	while (count > 0)	880	while (count > 0)
652	{	881	{
…		…
655	pread (fd, aio_buf, len, offset);	884	pread (fd, aio_buf, len, offset);
656	offset += len;	885	offset += len;
657	count -= len;	886	count -= len;
658	}	887	}
659		888
660	fBUF;
661
662	errno = 0;	889	errno = 0;
663	}	890	}
		891
664	#endif	892	#endif
665		893
666	#if !HAVE_READDIR_R	894	#if !HAVE_READDIR_R
667	# define readdir_r aio_readdir_r	895	# define readdir_r aio_readdir_r
668		896
669	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	897	static mutex_t readdirlock = MUTEX_INIT;
670		898
671	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	899	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
672	{	900	{
673	struct dirent *e;	901	struct dirent *e;
674	int errorno;	902	int errorno;
675		903
676	pthread_mutex_lock (&readdirlock);	904	LOCK (readdirlock);
677		905
678	e = readdir (dirp);	906	e = readdir (dirp);
679	errorno = errno;	907	errorno = errno;
680		908
681	if (e)	909	if (e)
…		…
684	strcpy (ent->d_name, e->d_name);	912	strcpy (ent->d_name, e->d_name);
685	}	913	}
686	else	914	else
687	*res = 0;	915	*res = 0;
688		916
689	pthread_mutex_unlock (&readdirlock);	917	UNLOCK (readdirlock);
690		918
691	errno = errorno;	919	errno = errorno;
692	return e ? 0 : -1;	920	return e ? 0 : -1;
693	}	921	}
694	#endif	922	#endif
695		923
696	/* sendfile always needs emulation */	924	/* sendfile always needs emulation */
697	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	925	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
698	{	926	{
699	ssize_t res;	927	ssize_t res;
700		928
701	if (!count)	929	if (!count)
702	return 0;	930	return 0;
…		…
713	{	941	{
714	off_t sbytes;	942	off_t sbytes;
715	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	943	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
716		944
717	if (res < 0 && sbytes)	945	if (res < 0 && sbytes)
718	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	946	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
719	res = sbytes;	947	res = sbytes;
720	}	948	}
721		949
722	# elif __hpux	950	# elif __hpux
723	res = sendfile (ofd, ifd, offset, count, 0, 0);	951	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
779		1007
780	offset += cnt;	1008	offset += cnt;
781	res += cnt;	1009	res += cnt;
782	count -= cnt;	1010	count -= cnt;
783	}	1011	}
784
785	fBUF;
786	}	1012	}
787		1013
788	return res;	1014	return res;
789	}	1015	}
790		1016
791	/* read a full directory */	1017	/* read a full directory */
792	static int scandir_ (const char *path, void **namesp)	1018	static void scandir_ (aio_req req, worker *self)
793	{	1019	{
794	DIR *dirp;	1020	DIR *dirp;
795	union	1021	union
796	{	1022	{
797	struct dirent d;	1023	struct dirent d;
…		…
802	int memlen = 4096;	1028	int memlen = 4096;
803	int memofs = 0;	1029	int memofs = 0;
804	int res = 0;	1030	int res = 0;
805	int errorno;	1031	int errorno;
806		1032
807	dirp = opendir (path);	1033	LOCK (wrklock);
808	if (!dirp)	1034	self->dirp = dirp = opendir (req->ptr1);
809	return -1;
810
811	u = malloc (sizeof (*u));	1035	self->dbuf = u = malloc (sizeof (*u));
		1036	req->flags |= FLAG_PTR2_FREE;
812	names = malloc (memlen);	1037	req->ptr2 = names = malloc (memlen);
		1038	UNLOCK (wrklock);
813		1039
814	if (u && names)	1040	if (dirp && u && names)
815	for (;;)	1041	for (;;)
816	{	1042	{
817	errno = 0;	1043	errno = 0;
818	readdir_r (dirp, &u->d, &entp);	1044	readdir_r (dirp, &u->d, &entp);
819		1045
…		…
829	res++;	1055	res++;
830		1056
831	while (memofs + len > memlen)	1057	while (memofs + len > memlen)
832	{	1058	{
833	memlen *= 2;	1059	memlen *= 2;
		1060	LOCK (wrklock);
834	names = realloc (names, memlen);	1061	req->ptr2 = names = realloc (names, memlen);
		1062	UNLOCK (wrklock);
		1063
835	if (!names)	1064	if (!names)
836	break;	1065	break;
837	}	1066	}
838		1067
839	memcpy (names + memofs, name, len);	1068	memcpy (names + memofs, name, len);
840	memofs += len;	1069	memofs += len;
841	}	1070	}
842	}	1071	}
843		1072
844	errorno = errno;
845	free (u);
846	closedir (dirp);
847
848	if (errorno)	1073	if (errno)
		1074	res = -1;
		1075
		1076	req->result = res;
		1077	}
		1078
		1079	/*****************************************************************************/
		1080
		1081	static void *aio_proc (void *thr_arg)
		1082	{
		1083	aio_req req;
		1084	struct timespec ts;
		1085	worker *self = (worker *)thr_arg;
		1086
		1087	/* try to distribute timeouts somewhat evenly */
		1088	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1089	* (1000000000UL / 1024UL);
		1090
		1091	for (;;)
849	{	1092	{
850	free (names);	1093	ts.tv_sec = time (0) + IDLE_TIMEOUT;
851	errno = errorno;
852	res = -1;
853	}
854		1094
855	*namesp = (void *)names;	1095	LOCK (reqlock);
856	return res;
857	}
858
859	/*****************************************************************************/
860
861	static void *aio_proc (void *thr_arg)
862	{
863	aio_req req;
864	int type;
865
866	do
867	{
868	pthread_mutex_lock (&reqlock);
869		1096
870	for (;;)	1097	for (;;)
871	{	1098	{
872	req = reqq_shift (&req_queue);	1099	self->req = req = reqq_shift (&req_queue);
873		1100
874	if (req)	1101	if (req)
875	break;	1102	break;
876		1103
877	pthread_cond_wait (&reqwait, &reqlock);	1104	++idle;
		1105
		1106	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
		1107	== ETIMEDOUT)
		1108	{
		1109	if (idle > max_idle)
		1110	{
		1111	--idle;
		1112	UNLOCK (reqlock);
		1113	LOCK (wrklock);
		1114	--started;
		1115	UNLOCK (wrklock);
		1116	goto quit;
		1117	}
		1118
		1119	/* we are allowed to idle, so do so without any timeout */
		1120	COND_WAIT (reqwait, reqlock);
		1121	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1122	}
		1123
		1124	--idle;
878	}	1125	}
879		1126
880	pthread_mutex_unlock (&reqlock);	1127	--nready;
		1128
		1129	UNLOCK (reqlock);
881		1130
882	errno = 0; /* strictly unnecessary */	1131	errno = 0; /* strictly unnecessary */
883	type = req->type; /* remember type for QUIT check */
884		1132
885	if (!(req->flags & FLAG_CANCELLED))	1133	if (!(req->flags & FLAG_CANCELLED))
886	switch (type)	1134	switch (req->type)
887	{	1135	{
888	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1136	case REQ_READ: req->result = pread (req->int1, req->ptr1, req->size, req->offs); break;
889	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1137	case REQ_WRITE: req->result = pwrite (req->int1, req->ptr1, req->size, req->offs); break;
890		1138
891	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1139	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
892	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1140	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
893		1141
894	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1142	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
895	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1143	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
896	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1144	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
897		1145
		1146	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1147	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1148	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1149	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1150
898	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1151	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
899	case REQ_CLOSE: req->result = close (req->fd); break;	1152	case REQ_CLOSE: req->result = close (req->int1); break;
900	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1153	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
901	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1154	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1155	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
902	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1156	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
903	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1157	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
904	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1158	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1159	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1160	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
905		1161
906	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1162	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
907	case REQ_FSYNC: req->result = fsync (req->fd); break;	1163	case REQ_FSYNC: req->result = fsync (req->int1); break;
908	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1164	case REQ_READDIR: scandir_ (req, self); break;
909		1165
910	case REQ_SLEEP:	1166	case REQ_BUSY:
911	{	1167	{
912	struct timeval tv;	1168	struct timeval tv;
913		1169
914	tv.tv_sec = req->fd;	1170	tv.tv_sec = req->nv1;
915	tv.tv_usec = req->fd2;	1171	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
916		1172
917	req->result = select (0, 0, 0, 0, &tv);	1173	req->result = select (0, 0, 0, 0, &tv);
918	}	1174	}
919		1175
		1176	case REQ_UTIME:
		1177	case REQ_FUTIME:
		1178	{
		1179	struct timeval tv[2];
		1180	struct timeval *times;
		1181
		1182	if (req->nv1 != -1. || req->nv2 != -1.)
		1183	{
		1184	tv[0].tv_sec = req->nv1;
		1185	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1186	tv[1].tv_sec = req->nv2;
		1187	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1188
		1189	times = tv;
		1190	}
		1191	else
		1192	times = 0;
		1193
		1194
		1195	req->result = req->type == REQ_FUTIME
		1196	? futimes (req->int1, times)
		1197	: utimes (req->ptr1, times);
		1198	}
		1199
920	case REQ_GROUP:	1200	case REQ_GROUP:
921	case REQ_NOP:	1201	case REQ_NOP:
		1202	break;
		1203
922	case REQ_QUIT:	1204	case REQ_QUIT:
923	break;	1205	goto quit;
924		1206
925	default:	1207	default:
926	req->result = ENOSYS;	1208	req->result = -1;
927	break;	1209	break;
928	}	1210	}
929		1211
930	req->errorno = errno;	1212	req->errorno = errno;
931		1213
932	pthread_mutex_lock (&reslock);	1214	LOCK (reslock);
		1215
		1216	++npending;
933		1217
934	if (!reqq_push (&res_queue, req))	1218	if (!reqq_push (&res_queue, req))
		1219	{
935	/* write a dummy byte to the pipe so fh becomes ready */	1220	/* write a dummy byte to the pipe so fh becomes ready */
936	write (respipe [1], &respipe, 1);	1221	write (respipe [1], &respipe, 1);
937		1222
938	pthread_mutex_unlock (&reslock);	1223	/* optionally signal the main thread asynchronously */
		1224	if (main_sig)
		1225	pthread_kill (main_tid, main_sig);
		1226	}
		1227
		1228	self->req = 0;
		1229	worker_clear (self);
		1230
		1231	UNLOCK (reslock);
939	}	1232	}
940	while (type != REQ_QUIT);	1233
		1234	quit:
		1235	LOCK (wrklock);
		1236	worker_free (self);
		1237	UNLOCK (wrklock);
941		1238
942	return 0;	1239	return 0;
943	}	1240	}
944		1241
945	/*****************************************************************************/	1242	/*****************************************************************************/
946		1243
947	static void atfork_prepare (void)	1244	static void atfork_prepare (void)
948	{	1245	{
949	pthread_mutex_lock (&reqlock);	1246	LOCK (wrklock);
950	pthread_mutex_lock (&reslock);	1247	LOCK (reqlock);
		1248	LOCK (reslock);
951	#if !HAVE_PREADWRITE	1249	#if !HAVE_PREADWRITE
952	pthread_mutex_lock (&preadwritelock);	1250	LOCK (preadwritelock);
953	#endif	1251	#endif
954	#if !HAVE_READDIR_R	1252	#if !HAVE_READDIR_R
955	pthread_mutex_lock (&readdirlock);	1253	LOCK (readdirlock);
956	#endif	1254	#endif
957	}	1255	}
958		1256
959	static void atfork_parent (void)	1257	static void atfork_parent (void)
960	{	1258	{
961	#if !HAVE_READDIR_R	1259	#if !HAVE_READDIR_R
962	pthread_mutex_unlock (&readdirlock);	1260	UNLOCK (readdirlock);
963	#endif	1261	#endif
964	#if !HAVE_PREADWRITE	1262	#if !HAVE_PREADWRITE
965	pthread_mutex_unlock (&preadwritelock);	1263	UNLOCK (preadwritelock);
966	#endif	1264	#endif
967	pthread_mutex_unlock (&reslock);	1265	UNLOCK (reslock);
968	pthread_mutex_unlock (&reqlock);	1266	UNLOCK (reqlock);
		1267	UNLOCK (wrklock);
969	}	1268	}
970		1269
971	static void atfork_child (void)	1270	static void atfork_child (void)
972	{	1271	{
973	aio_req prv;	1272	aio_req prv;
974
975	started = 0;
976		1273
977	while (prv = reqq_shift (&req_queue))	1274	while (prv = reqq_shift (&req_queue))
978	req_free (prv);	1275	req_free (prv);
979		1276
980	while (prv = reqq_shift (&res_queue))	1277	while (prv = reqq_shift (&res_queue))
981	req_free (prv);	1278	req_free (prv);
982		1279
		1280	while (wrk_first.next != &wrk_first)
		1281	{
		1282	worker *wrk = wrk_first.next;
		1283
		1284	if (wrk->req)
		1285	req_free (wrk->req);
		1286
		1287	worker_clear (wrk);
		1288	worker_free (wrk);
		1289	}
		1290
		1291	started = 0;
		1292	idle = 0;
		1293	nreqs = 0;
		1294	nready = 0;
		1295	npending = 0;
		1296
983	close (respipe [0]);	1297	close (respipe [0]);
984	close (respipe [1]);	1298	close (respipe [1]);
985	create_pipe ();	1299	create_pipe ();
986		1300
987	atfork_parent ();	1301	atfork_parent ();
…		…
1013	PROTOTYPES: ENABLE	1327	PROTOTYPES: ENABLE
1014		1328
1015	BOOT:	1329	BOOT:
1016	{	1330	{
1017	HV *stash = gv_stashpv ("IO::AIO", 1);	1331	HV *stash = gv_stashpv ("IO::AIO", 1);
		1332
1018	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1333	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1019	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1334	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1020	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1335	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1336	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1337	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1338	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1339	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1021		1340
1022	create_pipe ();	1341	create_pipe ();
1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1342	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1024	}	1343	}
1025		1344
1026	void	1345	void
1027	min_parallel (nthreads)	1346	max_poll_reqs (int nreqs)
1028	int nthreads
1029	PROTOTYPE: $	1347	PROTOTYPE: $
		1348	CODE:
		1349	max_poll_reqs = nreqs;
1030		1350
1031	void	1351	void
1032	max_parallel (nthreads)	1352	max_poll_time (double nseconds)
1033	int nthreads
1034	PROTOTYPE: $	1353	PROTOTYPE: $
		1354	CODE:
		1355	max_poll_time = nseconds * AIO_TICKS;
		1356
		1357	void
		1358	min_parallel (int nthreads)
		1359	PROTOTYPE: $
		1360
		1361	void
		1362	max_parallel (int nthreads)
		1363	PROTOTYPE: $
		1364
		1365	void
		1366	max_idle (int nthreads)
		1367	PROTOTYPE: $
		1368	CODE:
		1369	set_max_idle (nthreads);
1035		1370
1036	int	1371	int
1037	max_outstanding (nreqs)	1372	max_outstanding (int maxreqs)
1038	int nreqs	1373	PROTOTYPE: $
1039	PROTOTYPE: $
1040	CODE:	1374	CODE:
1041	RETVAL = max_outstanding;	1375	RETVAL = max_outstanding;
1042	max_outstanding = nreqs;	1376	max_outstanding = maxreqs;
		1377	OUTPUT:
		1378	RETVAL
1043		1379
1044	void	1380	void
1045	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1381	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1046	SV * pathname
1047	int flags
1048	int mode
1049	SV * callback
1050	PROTOTYPE: $$$;$	1382	PROTOTYPE: $$$;$
1051	PPCODE:	1383	PPCODE:
1052	{	1384	{
1053	dREQ;	1385	dREQ;
1054		1386
1055	req->type = REQ_OPEN;	1387	req->type = REQ_OPEN;
1056	req->data = newSVsv (pathname);	1388	req->sv1 = newSVsv (pathname);
1057	req->dataptr = SvPVbyte_nolen (req->data);	1389	req->ptr1 = SvPVbyte_nolen (req->sv1);
1058	req->fd = flags;	1390	req->int1 = flags;
1059	req->mode = mode;	1391	req->mode = mode;
1060		1392
1061	REQ_SEND;	1393	REQ_SEND;
1062	}	1394	}
1063		1395
1064	void	1396	void
1065	aio_close (fh,callback=&PL_sv_undef)	1397	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1066	SV * fh
1067	SV * callback
1068	PROTOTYPE: $;$	1398	PROTOTYPE: $;$
1069	ALIAS:	1399	ALIAS:
1070	aio_close = REQ_CLOSE	1400	aio_close = REQ_CLOSE
1071	aio_fsync = REQ_FSYNC	1401	aio_fsync = REQ_FSYNC
1072	aio_fdatasync = REQ_FDATASYNC	1402	aio_fdatasync = REQ_FDATASYNC
1073	PPCODE:	1403	PPCODE:
1074	{	1404	{
1075	dREQ;	1405	dREQ;
1076		1406
1077	req->type = ix;	1407	req->type = ix;
1078	req->fh = newSVsv (fh);	1408	req->sv1 = newSVsv (fh);
1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1409	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1080		1410
1081	REQ_SEND (req);	1411	REQ_SEND (req);
1082	}	1412	}
1083		1413
1084	void	1414	void
1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1415	aio_read (SV *fh, UV offset, UV length, SV8 *data, UV dataoffset, SV *callback=&PL_sv_undef)
1086	SV * fh
1087	UV offset
1088	UV length
1089	SV * data
1090	UV dataoffset
1091	SV * callback
1092	ALIAS:	1416	ALIAS:
1093	aio_read = REQ_READ	1417	aio_read = REQ_READ
1094	aio_write = REQ_WRITE	1418	aio_write = REQ_WRITE
1095	PROTOTYPE: $$$$$;$	1419	PROTOTYPE: $$$$$;$
1096	PPCODE:	1420	PPCODE:
1097	{	1421	{
1098	aio_req req;
1099	STRLEN svlen;	1422	STRLEN svlen;
1100	char *svptr = SvPVbyte (data, svlen);	1423	char *svptr = SvPVbyte (data, svlen);
1101		1424
1102	SvUPGRADE (data, SVt_PV);	1425	SvUPGRADE (data, SVt_PV);
1103	SvPOK_on (data);	1426	SvPOK_on (data);
…		…
1115	length = svlen - dataoffset;	1438	length = svlen - dataoffset;
1116	}	1439	}
1117	else	1440	else
1118	{	1441	{
1119	/* read: grow scalar as necessary */	1442	/* read: grow scalar as necessary */
1120	svptr = SvGROW (data, length + dataoffset);	1443	svptr = SvGROW (data, length + dataoffset + 1);
1121	}	1444	}
1122		1445
1123	if (length < 0)	1446	if (length < 0)
1124	croak ("length must not be negative");	1447	croak ("length must not be negative");
1125		1448
1126	{	1449	{
1127	dREQ;	1450	dREQ;
1128		1451
1129	req->type = ix;	1452	req->type = ix;
1130	req->fh = newSVsv (fh);	1453	req->sv1 = newSVsv (fh);
1131	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1454	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1132	: IoOFP (sv_2io (fh)));	1455	: IoOFP (sv_2io (fh)));
1133	req->offset = offset;	1456	req->offs = offset;
1134	req->length = length;	1457	req->size = length;
1135	req->data = SvREFCNT_inc (data);	1458	req->sv2 = SvREFCNT_inc (data);
1136	req->dataptr = (char *)svptr + dataoffset;	1459	req->ptr1 = (char *)svptr + dataoffset;
		1460	req->stroffset = dataoffset;
1137		1461
1138	if (!SvREADONLY (data))	1462	if (!SvREADONLY (data))
1139	{	1463	{
1140	SvREADONLY_on (data);	1464	SvREADONLY_on (data);
1141	req->data2ptr = (void *)data;	1465	req->flags |= FLAG_SV2_RO_OFF;
1142	}	1466	}
1143		1467
1144	REQ_SEND;	1468	REQ_SEND;
1145	}	1469	}
1146	}	1470	}
1147		1471
1148	void	1472	void
		1473	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1474	PROTOTYPE: $$;$
		1475	PPCODE:
		1476	{
		1477	SV *data;
		1478	dREQ;
		1479
		1480	data = newSV (NAME_MAX);
		1481	SvPOK_on (data);
		1482
		1483	req->type = REQ_READLINK;
		1484	req->sv1 = newSVsv (path);
		1485	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1486	req->sv2 = data;
		1487	req->ptr1 = SvPVbyte_nolen (data);
		1488
		1489	REQ_SEND;
		1490	}
		1491
		1492	void
1149	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1493	aio_sendfile (SV *out_fh, SV *in_fh, UV in_offset, UV length, SV *callback=&PL_sv_undef)
1150	SV * out_fh
1151	SV * in_fh
1152	UV in_offset
1153	UV length
1154	SV * callback
1155	PROTOTYPE: $$$$;$	1494	PROTOTYPE: $$$$;$
1156	PPCODE:	1495	PPCODE:
1157	{	1496	{
1158	dREQ;	1497	dREQ;
1159		1498
1160	req->type = REQ_SENDFILE;	1499	req->type = REQ_SENDFILE;
1161	req->fh = newSVsv (out_fh);	1500	req->sv1 = newSVsv (out_fh);
1162	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1501	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1163	req->fh2 = newSVsv (in_fh);	1502	req->sv2 = newSVsv (in_fh);
1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1503	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1165	req->offset = in_offset;	1504	req->offs = in_offset;
1166	req->length = length;	1505	req->size = length;
1167		1506
1168	REQ_SEND;	1507	REQ_SEND;
1169	}	1508	}
1170		1509
1171	void	1510	void
1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1511	aio_readahead (SV *fh, UV offset, IV length, SV *callback=&PL_sv_undef)
1173	SV * fh
1174	UV offset
1175	IV length
1176	SV * callback
1177	PROTOTYPE: $$$;$	1512	PROTOTYPE: $$$;$
1178	PPCODE:	1513	PPCODE:
1179	{	1514	{
1180	dREQ;	1515	dREQ;
1181		1516
1182	req->type = REQ_READAHEAD;	1517	req->type = REQ_READAHEAD;
1183	req->fh = newSVsv (fh);	1518	req->sv1 = newSVsv (fh);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1519	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1185	req->offset = offset;	1520	req->offs = offset;
1186	req->length = length;	1521	req->size = length;
1187		1522
1188	REQ_SEND;	1523	REQ_SEND;
1189	}	1524	}
1190		1525
1191	void	1526	void
1192	aio_stat (fh_or_path,callback=&PL_sv_undef)	1527	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1193	SV * fh_or_path
1194	SV * callback
1195	ALIAS:	1528	ALIAS:
1196	aio_stat = REQ_STAT	1529	aio_stat = REQ_STAT
1197	aio_lstat = REQ_LSTAT	1530	aio_lstat = REQ_LSTAT
1198	PPCODE:	1531	PPCODE:
1199	{	1532	{
1200	dREQ;	1533	dREQ;
1201		1534
1202	New (0, req->statdata, 1, Stat_t);	1535	req->ptr2 = malloc (sizeof (Stat_t));
1203	if (!req->statdata)	1536	if (!req->ptr2)
1204	{	1537	{
1205	req_free (req);	1538	req_free (req);
1206	croak ("out of memory during aio_req->statdata allocation");	1539	croak ("out of memory during aio_stat statdata allocation");
1207	}	1540	}
		1541
		1542	req->flags |= FLAG_PTR2_FREE;
		1543	req->sv1 = newSVsv (fh_or_path);
1208		1544
1209	if (SvPOK (fh_or_path))	1545	if (SvPOK (fh_or_path))
1210	{	1546	{
1211	req->type = ix;	1547	req->type = ix;
1212	req->data = newSVsv (fh_or_path);
1213	req->dataptr = SvPVbyte_nolen (req->data);	1548	req->ptr1 = SvPVbyte_nolen (req->sv1);
1214	}	1549	}
1215	else	1550	else
1216	{	1551	{
1217	req->type = REQ_FSTAT;	1552	req->type = REQ_FSTAT;
1218	req->fh = newSVsv (fh_or_path);
1219	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1553	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1220	}	1554	}
1221		1555
1222	REQ_SEND;	1556	REQ_SEND;
1223	}	1557	}
1224		1558
1225	void	1559	void
		1560	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1561	PPCODE:
		1562	{
		1563	dREQ;
		1564
		1565	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1566	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1567	req->sv1 = newSVsv (fh_or_path);
		1568
		1569	if (SvPOK (fh_or_path))
		1570	{
		1571	req->type = REQ_UTIME;
		1572	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1573	}
		1574	else
		1575	{
		1576	req->type = REQ_FUTIME;
		1577	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1578	}
		1579
		1580	REQ_SEND;
		1581	}
		1582
		1583	void
		1584	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1585	PPCODE:
		1586	{
		1587	dREQ;
		1588
		1589	req->mode = mode;
		1590	req->sv1 = newSVsv (fh_or_path);
		1591
		1592	if (SvPOK (fh_or_path))
		1593	{
		1594	req->type = REQ_CHMOD;
		1595	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1596	}
		1597	else
		1598	{
		1599	req->type = REQ_FCHMOD;
		1600	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1601	}
		1602
		1603	REQ_SEND;
		1604	}
		1605
		1606	void
		1607	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1608	PPCODE:
		1609	{
		1610	dREQ;
		1611
		1612	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1613	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1614	req->sv1 = newSVsv (fh_or_path);
		1615
		1616	if (SvPOK (fh_or_path))
		1617	{
		1618	req->type = REQ_CHOWN;
		1619	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1620	}
		1621	else
		1622	{
		1623	req->type = REQ_FCHOWN;
		1624	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1625	}
		1626
		1627	REQ_SEND;
		1628	}
		1629
		1630	void
1226	aio_unlink (pathname,callback=&PL_sv_undef)	1631	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1227	SV * pathname
1228	SV * callback
1229	ALIAS:	1632	ALIAS:
1230	aio_unlink = REQ_UNLINK	1633	aio_unlink = REQ_UNLINK
1231	aio_rmdir = REQ_RMDIR	1634	aio_rmdir = REQ_RMDIR
1232	aio_readdir = REQ_READDIR	1635	aio_readdir = REQ_READDIR
1233	PPCODE:	1636	PPCODE:
1234	{	1637	{
1235	dREQ;	1638	dREQ;
1236		1639
1237	req->type = ix;	1640	req->type = ix;
1238	req->data = newSVsv (pathname);	1641	req->sv1 = newSVsv (pathname);
1239	req->dataptr = SvPVbyte_nolen (req->data);	1642	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1643
		1644	REQ_SEND;
		1645	}
		1646
		1647	void
		1648	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1649	PPCODE:
		1650	{
		1651	dREQ;
1240		1652
		1653	req->type = REQ_MKDIR;
		1654	req->sv1 = newSVsv (pathname);
		1655	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1656	req->mode = mode;
		1657
1241	REQ_SEND;	1658	REQ_SEND;
1242	}	1659	}
1243		1660
1244	void	1661	void
1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1662	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1246	SV * oldpath
1247	SV * newpath
1248	SV * callback
1249	ALIAS:	1663	ALIAS:
1250	aio_link = REQ_LINK	1664	aio_link = REQ_LINK
1251	aio_symlink = REQ_SYMLINK	1665	aio_symlink = REQ_SYMLINK
1252	aio_rename = REQ_RENAME	1666	aio_rename = REQ_RENAME
1253	PPCODE:	1667	PPCODE:
1254	{	1668	{
1255	dREQ;	1669	dREQ;
1256		1670
1257	req->type = ix;	1671	req->type = ix;
1258	req->fh = newSVsv (oldpath);	1672	req->sv2 = newSVsv (oldpath);
1259	req->data2ptr = SvPVbyte_nolen (req->fh);	1673	req->ptr2 = SvPVbyte_nolen (req->sv2);
1260	req->data = newSVsv (newpath);	1674	req->sv1 = newSVsv (newpath);
1261	req->dataptr = SvPVbyte_nolen (req->data);	1675	req->ptr1 = SvPVbyte_nolen (req->sv1);
1262		1676
1263	REQ_SEND;	1677	REQ_SEND;
1264	}	1678	}
1265		1679
1266	void	1680	void
1267	aio_sleep (delay,callback=&PL_sv_undef)	1681	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1268	double delay
1269	SV * callback
1270	PPCODE:	1682	PPCODE:
1271	{	1683	{
1272	dREQ;	1684	dREQ;
1273		1685
1274	req->type = REQ_SLEEP;	1686	req->type = REQ_MKNOD;
1275	req->fd = delay < 0. ? 0 : delay;	1687	req->sv1 = newSVsv (pathname);
1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1688	req->ptr1 = SvPVbyte_nolen (req->sv1);
1277		1689	req->mode = (mode_t)mode;
		1690	req->offs = dev;
		1691
1278	REQ_SEND;	1692	REQ_SEND;
1279	}	1693	}
1280		1694
1281	void	1695	void
		1696	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1697	PPCODE:
		1698	{
		1699	dREQ;
		1700
		1701	req->type = REQ_BUSY;
		1702	req->nv1 = delay < 0. ? 0. : delay;
		1703
		1704	REQ_SEND;
		1705	}
		1706
		1707	void
1282	aio_group (callback=&PL_sv_undef)	1708	aio_group (SV *callback=&PL_sv_undef)
1283	SV * callback
1284	PROTOTYPE: ;$	1709	PROTOTYPE: ;$
1285	PPCODE:	1710	PPCODE:
1286	{	1711	{
1287	dREQ;	1712	dREQ;
1288		1713
1289	req->type = REQ_GROUP;	1714	req->type = REQ_GROUP;
		1715
1290	req_send (req);	1716	req_send (req);
1291
1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1717	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1293	}	1718	}
1294		1719
1295	void	1720	void
1296	aio_nop (callback=&PL_sv_undef)	1721	aio_nop (SV *callback=&PL_sv_undef)
1297	SV * callback
1298	PPCODE:	1722	PPCODE:
1299	{	1723	{
1300	dREQ;	1724	dREQ;
1301		1725
1302	req->type = REQ_NOP;	1726	req->type = REQ_NOP;
1303		1727
1304	REQ_SEND;	1728	REQ_SEND;
1305	}	1729	}
1306		1730
1307	void	1731	int
1308	aioreq_pri (int pri = DEFAULT_PRI)	1732	aioreq_pri (int pri = 0)
		1733	PROTOTYPE: ;$
1309	CODE:	1734	CODE:
		1735	RETVAL = next_pri - PRI_BIAS;
		1736	if (items > 0)
		1737	{
1310	if (pri < PRI_MIN) pri = PRI_MIN;	1738	if (pri < PRI_MIN) pri = PRI_MIN;
1311	if (pri > PRI_MAX) pri = PRI_MAX;	1739	if (pri > PRI_MAX) pri = PRI_MAX;
1312	next_pri = pri + PRI_BIAS;	1740	next_pri = pri + PRI_BIAS;
		1741	}
		1742	OUTPUT:
		1743	RETVAL
		1744
		1745	void
		1746	aioreq_nice (int nice = 0)
		1747	CODE:
		1748	nice = next_pri - nice;
		1749	if (nice < PRI_MIN) nice = PRI_MIN;
		1750	if (nice > PRI_MAX) nice = PRI_MAX;
		1751	next_pri = nice + PRI_BIAS;
1313		1752
1314	void	1753	void
1315	flush ()	1754	flush ()
1316	PROTOTYPE:	1755	PROTOTYPE:
1317	CODE:	1756	CODE:
…		…
1319	{	1758	{
1320	poll_wait ();	1759	poll_wait ();
1321	poll_cb ();	1760	poll_cb ();
1322	}	1761	}
1323		1762
1324	void	1763	int
1325	poll()	1764	poll()
1326	PROTOTYPE:	1765	PROTOTYPE:
1327	CODE:	1766	CODE:
1328	if (nreqs)
1329	{
1330	poll_wait ();	1767	poll_wait ();
1331	poll_cb ();	1768	RETVAL = poll_cb ();
1332	}	1769	OUTPUT:
		1770	RETVAL
1333		1771
1334	int	1772	int
1335	poll_fileno()	1773	poll_fileno()
1336	PROTOTYPE:	1774	PROTOTYPE:
1337	CODE:	1775	CODE:
…		…
1349		1787
1350	void	1788	void
1351	poll_wait()	1789	poll_wait()
1352	PROTOTYPE:	1790	PROTOTYPE:
1353	CODE:	1791	CODE:
1354	if (nreqs)
1355	poll_wait ();	1792	poll_wait ();
		1793
		1794	void
		1795	setsig (int signum = SIGIO)
		1796	PROTOTYPE: ;$
		1797	CODE:
		1798	{
		1799	if (block_sig_level)
		1800	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1801
		1802	LOCK (reslock);
		1803	main_tid = pthread_self ();
		1804	main_sig = signum;
		1805	UNLOCK (reslock);
		1806
		1807	if (main_sig && npending)
		1808	pthread_kill (main_tid, main_sig);
		1809	}
		1810
		1811	void
		1812	aio_block (SV *cb)
		1813	PROTOTYPE: &
		1814	PPCODE:
		1815	{
		1816	int count;
		1817
		1818	block_sig ();
		1819	PUSHMARK (SP);
		1820	PUTBACK;
		1821	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1822	SPAGAIN;
		1823	unblock_sig ();
		1824
		1825	if (SvTRUE (ERRSV))
		1826	croak (0);
		1827
		1828	XSRETURN (count);
		1829	}
1356		1830
1357	int	1831	int
1358	nreqs()	1832	nreqs()
1359	PROTOTYPE:	1833	PROTOTYPE:
1360	CODE:	1834	CODE:
1361	RETVAL = nreqs;	1835	RETVAL = nreqs;
1362	OUTPUT:	1836	OUTPUT:
1363	RETVAL	1837	RETVAL
1364		1838
		1839	int
		1840	nready()
		1841	PROTOTYPE:
		1842	CODE:
		1843	RETVAL = get_nready ();
		1844	OUTPUT:
		1845	RETVAL
		1846
		1847	int
		1848	npending()
		1849	PROTOTYPE:
		1850	CODE:
		1851	RETVAL = get_npending ();
		1852	OUTPUT:
		1853	RETVAL
		1854
		1855	int
		1856	nthreads()
		1857	PROTOTYPE:
		1858	CODE:
		1859	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1860	RETVAL = started;
		1861	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1862	OUTPUT:
		1863	RETVAL
		1864
1365	PROTOTYPES: DISABLE	1865	PROTOTYPES: DISABLE
1366		1866
1367	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1867	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1368		1868
1369	void	1869	void
…		…
1384	PPCODE:	1884	PPCODE:
1385	{	1885	{
1386	int i;	1886	int i;
1387	aio_req req;	1887	aio_req req;
1388		1888
		1889	if (main_sig && !block_sig_level)
		1890	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1891
1389	if (grp->fd == 2)	1892	if (grp->int1 == 2)
1390	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1893	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1391		1894
1392	for (i = 1; i < items; ++i )	1895	for (i = 1; i < items; ++i )
1393	{	1896	{
1394	if (GIMME_V != G_VOID)	1897	if (GIMME_V != G_VOID)
…		…
1396		1899
1397	req = SvAIO_REQ (ST (i));	1900	req = SvAIO_REQ (ST (i));
1398		1901
1399	if (req)	1902	if (req)
1400	{	1903	{
1401	++grp->length;	1904	++grp->size;
1402	req->grp = grp;	1905	req->grp = grp;
1403		1906
1404	req->grp_prev = 0;	1907	req->grp_prev = 0;
1405	req->grp_next = grp->grp_first;	1908	req->grp_next = grp->grp_first;
1406		1909
…		…
1411	}	1914	}
1412	}	1915	}
1413	}	1916	}
1414		1917
1415	void	1918	void
		1919	cancel_subs (aio_req_ornot req)
		1920	CODE:
		1921	req_cancel_subs (req);
		1922
		1923	void
1416	result (aio_req grp, ...)	1924	result (aio_req grp, ...)
1417	CODE:	1925	CODE:
1418	{	1926	{
1419	int i;	1927	int i;
		1928	AV *av;
		1929
		1930	grp->errorno = errno;
		1931
1420	AV *av = newAV ();	1932	av = newAV ();
1421		1933
1422	for (i = 1; i < items; ++i )	1934	for (i = 1; i < items; ++i )
1423	av_push (av, newSVsv (ST (i)));	1935	av_push (av, newSVsv (ST (i)));
1424		1936
1425	SvREFCNT_dec (grp->data);	1937	SvREFCNT_dec (grp->sv1);
1426	grp->data = (SV *)av;	1938	grp->sv1 = (SV *)av;
1427	}	1939	}
		1940
		1941	void
		1942	errno (aio_req grp, int errorno = errno)
		1943	CODE:
		1944	grp->errorno = errorno;
1428		1945
1429	void	1946	void
1430	limit (aio_req grp, int limit)	1947	limit (aio_req grp, int limit)
1431	CODE:	1948	CODE:
1432	grp->fd2 = limit;	1949	grp->int2 = limit;
1433	aio_grp_feed (grp);	1950	aio_grp_feed (grp);
1434		1951
1435	void	1952	void
1436	feed (aio_req grp, SV *callback=&PL_sv_undef)	1953	feed (aio_req grp, SV *callback=&PL_sv_undef)
1437	CODE:	1954	CODE:
1438	{	1955	{
1439	SvREFCNT_dec (grp->fh2);	1956	SvREFCNT_dec (grp->sv2);
1440	grp->fh2 = newSVsv (callback);	1957	grp->sv2 = newSVsv (callback);
1441		1958
1442	if (grp->fd2 <= 0)	1959	if (grp->int2 <= 0)
1443	grp->fd2 = 2;	1960	grp->int2 = 2;
1444		1961
1445	aio_grp_feed (grp);	1962	aio_grp_feed (grp);
1446	}	1963	}
1447		1964

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