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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.70 by root, Tue Oct 24 15:15:56 2006 UTC vs.
Revision 1.99 by root, Fri Jun 1 05:51:21 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
63	#define dBUF \	51	#define dBUF \
		52	char *aio_buf; \
		53	LOCK (wrklock); \
64	char *aio_buf = malloc (AIO_BUFSIZE); \	54	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		55	UNLOCK (wrklock); \
65	if (!aio_buf) \	56	if (!aio_buf) \
66	return -1;	57	return -1;
67		58
68	#define fBUF free (aio_buf)	59	typedef SV SV8; /* byte-sv, used for argument-checking */
69		60
70	enum {	61	enum {
71	REQ_QUIT,	62	REQ_QUIT,
72	REQ_OPEN, REQ_CLOSE,	63	REQ_OPEN, REQ_CLOSE,
73	REQ_READ, REQ_WRITE, REQ_READAHEAD,	64	REQ_READ, REQ_WRITE, REQ_READAHEAD,
74	REQ_SENDFILE,	65	REQ_SENDFILE,
75	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 */
76	REQ_FSYNC, REQ_FDATASYNC,	70	REQ_FSYNC, REQ_FDATASYNC,
77	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	71	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
78	REQ_READDIR,	72	REQ_MKNOD, REQ_READDIR,
79	REQ_LINK, REQ_SYMLINK,	73	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
80	REQ_GROUP, REQ_NOP,	74	REQ_GROUP, REQ_NOP,
81	REQ_BUSY,	75	REQ_BUSY,
82	};	76	};
83		77
84	#define AIO_REQ_KLASS "IO::AIO::REQ"	78	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
86		80
87	typedef struct aio_cb	81	typedef struct aio_cb
88	{	82	{
89	struct aio_cb *volatile next;	83	struct aio_cb *volatile next;
90		84
91	SV *data, *callback;	85	SV *callback;
92	SV *fh, *fh2;	86	SV *sv1, *sv2;
93	void *dataptr, *data2ptr;	87	void *ptr1, *ptr2;
94	Stat_t *statdata;
95	off_t offset;	88	off_t offs;
96	size_t length;	89	size_t size;
97	ssize_t result;	90	ssize_t result;
		91	double nv1, nv2;
98		92
99	STRLEN dataoffset;	93	STRLEN stroffset;
100	int type;	94	int type;
101	int fd, fd2;	95	int int1, int2, int3;
102	int errorno;	96	int errorno;
103	mode_t mode; /* open */	97	mode_t mode; /* open */
104		98
105	unsigned char flags;	99	unsigned char flags;
106	unsigned char pri;	100	unsigned char pri;
…		…
108	SV *self; /* the perl counterpart of this request, if any */	102	SV *self; /* the perl counterpart of this request, if any */
109	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	103	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
110	} aio_cb;	104	} aio_cb;
111		105
112	enum {	106	enum {
113	FLAG_CANCELLED = 0x01,	107	FLAG_CANCELLED = 0x01, /* request was cancelled */
		108	FLAG_SV1_RO_OFF = 0x40, /* data was set readonly */
		109	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
114	};	110	};
115		111
116	typedef aio_cb *aio_req;	112	typedef aio_cb *aio_req;
117	typedef aio_cb *aio_req_ornot;	113	typedef aio_cb *aio_req_ornot;
118		114
…		…
123	DEFAULT_PRI = 0,	119	DEFAULT_PRI = 0,
124	PRI_BIAS = -PRI_MIN,	120	PRI_BIAS = -PRI_MIN,
125	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	121	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
126	};	122	};
127		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
128	static int next_pri = DEFAULT_PRI + PRI_BIAS;	170	static int next_pri = DEFAULT_PRI + PRI_BIAS;
129		171
130	static int started, wanted;	172	static unsigned int started, idle, wanted;
131	static volatile int nreqs;	173
132	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;
133	static int respipe [2];	217	static int respipe [2];
134		218
135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	219	static mutex_t reslock = MUTEX_INIT;
136	# 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
137	#else	258	#else
138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	259
		260	# define get_nready() nready
		261	# define get_npending() npending
		262	# define get_nthreads() started
		263
139	#endif	264	#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		265
145	/*	266	/*
146	* a somewhat faster data structure might be nice, but	267	* a somewhat faster data structure might be nice, but
147	* with 8 priorities this actually needs <20 insns	268	* with 8 priorities this actually needs <20 insns
148	* per shift, the most expensive operation.	269	* per shift, the most expensive operation.
…		…
194	}	315	}
195		316
196	abort ();	317	abort ();
197	}	318	}
198		319
		320	static int poll_cb ();
199	static void req_invoke (aio_req req);	321	static int req_invoke (aio_req req);
200	static void req_free (aio_req req);	322	static void req_free (aio_req req);
		323	static void req_cancel (aio_req req);
201		324
202	/* must be called at most once */	325	/* must be called at most once */
203	static SV *req_sv (aio_req req, const char *klass)	326	static SV *req_sv (aio_req req, const char *klass)
204	{	327	{
205	if (!req->self)	328	if (!req->self)
…		…
223	return mg ? (aio_req)mg->mg_ptr : 0;	346	return mg ? (aio_req)mg->mg_ptr : 0;
224	}	347	}
225		348
226	static void aio_grp_feed (aio_req grp)	349	static void aio_grp_feed (aio_req grp)
227	{	350	{
		351	block_sig ();
		352
228	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	353	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
229	{	354	{
230	int old_len = grp->length;	355	int old_len = grp->size;
231		356
232	if (grp->fh2 && SvOK (grp->fh2))	357	if (grp->sv2 && SvOK (grp->sv2))
233	{	358	{
234	dSP;	359	dSP;
235		360
236	ENTER;	361	ENTER;
237	SAVETMPS;	362	SAVETMPS;
238	PUSHMARK (SP);	363	PUSHMARK (SP);
239	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	364	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
240	PUTBACK;	365	PUTBACK;
241	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	366	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
242	SPAGAIN;	367	SPAGAIN;
243	FREETMPS;	368	FREETMPS;
244	LEAVE;	369	LEAVE;
245	}	370	}
246		371
247	/* stop if no progress has been made */	372	/* stop if no progress has been made */
248	if (old_len == grp->length)	373	if (old_len == grp->size)
249	{	374	{
250	SvREFCNT_dec (grp->fh2);	375	SvREFCNT_dec (grp->sv2);
251	grp->fh2 = 0;	376	grp->sv2 = 0;
252	break;	377	break;
253	}	378	}
254	}	379	}
		380
		381	unblock_sig ();
255	}	382	}
256		383
257	static void aio_grp_dec (aio_req grp)	384	static void aio_grp_dec (aio_req grp)
258	{	385	{
259	--grp->length;	386	--grp->size;
260		387
261	/* call feeder, if applicable */	388	/* call feeder, if applicable */
262	aio_grp_feed (grp);	389	aio_grp_feed (grp);
263		390
264	/* finish, if done */	391	/* finish, if done */
265	if (!grp->length && grp->fd)	392	if (!grp->size && grp->int1)
266	{	393	{
		394	block_sig ();
		395
267	req_invoke (grp);	396	if (!req_invoke (grp))
		397	{
		398	req_free (grp);
		399	unblock_sig ();
		400	croak (0);
		401	}
		402
268	req_free (grp);	403	req_free (grp);
		404	unblock_sig ();
269	}	405	}
270	}	406	}
271		407
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)	408	static int req_invoke (aio_req req)
298	{	409	{
299	dSP;	410	dSP;
		411
		412	if (req->flags & FLAG_SV1_RO_OFF)
		413	SvREADONLY_off (req->sv1);
300		414
301	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	415	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
302	{	416	{
303	errno = req->errorno;
304
305	ENTER;	417	ENTER;
306	SAVETMPS;	418	SAVETMPS;
307	PUSHMARK (SP);	419	PUSHMARK (SP);
308	EXTEND (SP, 1);	420	EXTEND (SP, 1);
309		421
…		…
313	{	425	{
314	SV *rv = &PL_sv_undef;	426	SV *rv = &PL_sv_undef;
315		427
316	if (req->result >= 0)	428	if (req->result >= 0)
317	{	429	{
		430	int i;
318	char *buf = req->data2ptr;	431	char *buf = req->ptr2;
319	AV *av = newAV ();	432	AV *av = newAV ();
320		433
321	while (req->result)	434	av_extend (av, req->result - 1);
		435
		436	for (i = 0; i < req->result; ++i)
322	{	437	{
323	SV *sv = newSVpv (buf, 0);	438	SV *sv = newSVpv (buf, 0);
324		439
325	av_push (av, sv);	440	av_store (av, i, sv);
326	buf += SvCUR (sv) + 1;	441	buf += SvCUR (sv) + 1;
327	req->result--;
328	}	442	}
329		443
330	rv = sv_2mortal (newRV_noinc ((SV *)av));	444	rv = sv_2mortal (newRV_noinc ((SV *)av));
331	}	445	}
332		446
…		…
342	PUSHs (sv_2mortal (newSViv (req->result)));	456	PUSHs (sv_2mortal (newSViv (req->result)));
343	PUTBACK;	457	PUTBACK;
344	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	458	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
345	SPAGAIN;	459	SPAGAIN;
346		460
347	fh = SvREFCNT_inc (POPs);	461	fh = POPs;
348
349	PUSHMARK (SP);	462	PUSHMARK (SP);
350	XPUSHs (sv_2mortal (fh));	463	XPUSHs (fh);
351	}	464	}
352	break;	465	break;
353		466
354	case REQ_GROUP:	467	case REQ_GROUP:
355	req->fd = 2; /* mark group as finished */	468	req->int1 = 2; /* mark group as finished */
356		469
357	if (req->data)	470	if (req->sv1)
358	{	471	{
359	int i;	472	int i;
360	AV *av = (AV *)req->data;	473	AV *av = (AV *)req->sv1;
361		474
362	EXTEND (SP, AvFILL (av) + 1);	475	EXTEND (SP, AvFILL (av) + 1);
363	for (i = 0; i <= AvFILL (av); ++i)	476	for (i = 0; i <= AvFILL (av); ++i)
364	PUSHs (*av_fetch (av, i, 0));	477	PUSHs (*av_fetch (av, i, 0));
365	}	478	}
…		…
367		480
368	case REQ_NOP:	481	case REQ_NOP:
369	case REQ_BUSY:	482	case REQ_BUSY:
370	break;	483	break;
371		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)));
		507	break;
		508
372	default:	509	default:
373	PUSHs (sv_2mortal (newSViv (req->result)));	510	PUSHs (sv_2mortal (newSViv (req->result)));
374	break;	511	break;
375	}	512	}
376		513
		514	errno = req->errorno;
377		515
378	PUTBACK;	516	PUTBACK;
379	call_sv (req->callback, G_VOID | G_EVAL);	517	call_sv (req->callback, G_VOID | G_EVAL);
380	SPAGAIN;	518	SPAGAIN;
381		519
…		…
395	grp->grp_first = req->grp_next;	533	grp->grp_first = req->grp_next;
396		534
397	aio_grp_dec (grp);	535	aio_grp_dec (grp);
398	}	536	}
399		537
400	if (SvTRUE (ERRSV))	538	return !SvTRUE (ERRSV);
401	{
402	req_free (req);
403	croak (0);
404	}
405	}	539	}
406		540
407	static void req_free (aio_req req)	541	static void req_free (aio_req req)
408	{	542	{
409	if (req->self)	543	if (req->self)
410	{	544	{
411	sv_unmagic (req->self, PERL_MAGIC_ext);	545	sv_unmagic (req->self, PERL_MAGIC_ext);
412	SvREFCNT_dec (req->self);	546	SvREFCNT_dec (req->self);
413	}	547	}
414		548
415	SvREFCNT_dec (req->data);
416	SvREFCNT_dec (req->fh);	549	SvREFCNT_dec (req->sv1);
417	SvREFCNT_dec (req->fh2);	550	SvREFCNT_dec (req->sv2);
418	SvREFCNT_dec (req->callback);	551	SvREFCNT_dec (req->callback);
419	Safefree (req->statdata);
420		552
421	if (req->type == REQ_READDIR && req->result >= 0)	553	if (req->flags & FLAG_PTR2_FREE)
422	free (req->data2ptr);	554	free (req->ptr2);
423		555
424	Safefree (req);	556	Safefree (req);
425	}	557	}
426		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
427	static void req_cancel (aio_req req)	573	static void req_cancel (aio_req req)
428	{	574	{
429	req->flags |= FLAG_CANCELLED;	575	req->flags |= FLAG_CANCELLED;
430		576
431	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))
432	{	592	{
433	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);
434		601
435	for (sub = req->grp_first; sub; sub = sub->grp_next)	602	UNLOCK (wrklock);
436	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);
437	}	695	}
438	}	696	}
439		697
440	static int poll_cb ()	698	static int poll_cb ()
441	{	699	{
442	dSP;	700	dSP;
443	int count = 0;	701	int count = 0;
		702	int maxreqs = max_poll_reqs;
444	int do_croak = 0;	703	int do_croak = 0;
		704	struct timeval tv_start, tv_now;
445	aio_req req;	705	aio_req req;
		706
		707	if (max_poll_time)
		708	gettimeofday (&tv_start, 0);
		709
		710	block_sig ();
446		711
447	for (;;)	712	for (;;)
448	{	713	{
449	pthread_mutex_lock (&reslock);	714	for (;;)
450	req = reqq_shift (&res_queue);
451
452	if (req)
453	{	715	{
		716	maybe_start_thread ();
		717
		718	LOCK (reslock);
		719	req = reqq_shift (&res_queue);
		720
454	if (!res_queue.size)	721	if (req)
455	{	722	{
		723	--npending;
		724
		725	if (!res_queue.size)
		726	{
456	/* read any signals sent by the worker threads */	727	/* read any signals sent by the worker threads */
457	char buf [32];	728	char buf [4];
458	while (read (respipe [0], buf, 32) == 32)	729	while (read (respipe [0], buf, 4) == 4)
		730	;
459	;	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;
460	}	769	}
461	}	770	}
462		771
463	pthread_mutex_unlock (&reslock);	772	if (nreqs <= max_outstanding)
464
465	if (!req)
466	break;	773	break;
467		774
468	--nreqs;	775	poll_wait ();
469		776
470	if (req->type == REQ_QUIT)	777	++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	}	778	}
499		779
		780	unblock_sig ();
500	return count;	781	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	}	782	}
585		783
586	static void create_pipe ()	784	static void create_pipe ()
587	{	785	{
588	if (pipe (respipe))	786	if (pipe (respipe))
…		…
605	/*	803	/*
606	* make our pread/pwrite safe against themselves, but not against	804	* make our pread/pwrite safe against themselves, but not against
607	* 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,
608	* but that's your problem, not mine.	806	* but that's your problem, not mine.
609	*/	807	*/
610	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	808	static mutex_t preadwritelock = MUTEX_INIT;
611		809
612	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)
613	{	811	{
614	ssize_t res;	812	ssize_t res;
615	off_t ooffset;	813	off_t ooffset;
616		814
617	pthread_mutex_lock (&preadwritelock);	815	LOCK (preadwritelock);
618	ooffset = lseek (fd, 0, SEEK_CUR);	816	ooffset = lseek (fd, 0, SEEK_CUR);
619	lseek (fd, offset, SEEK_SET);	817	lseek (fd, offset, SEEK_SET);
620	res = read (fd, buf, count);	818	res = read (fd, buf, count);
621	lseek (fd, ooffset, SEEK_SET);	819	lseek (fd, ooffset, SEEK_SET);
622	pthread_mutex_unlock (&preadwritelock);	820	UNLOCK (preadwritelock);
623		821
624	return res;	822	return res;
625	}	823	}
626		824
627	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)
628	{	826	{
629	ssize_t res;	827	ssize_t res;
630	off_t ooffset;	828	off_t ooffset;
631		829
632	pthread_mutex_lock (&preadwritelock);	830	LOCK (preadwritelock);
633	ooffset = lseek (fd, 0, SEEK_CUR);	831	ooffset = lseek (fd, 0, SEEK_CUR);
634	lseek (fd, offset, SEEK_SET);	832	lseek (fd, offset, SEEK_SET);
635	res = write (fd, buf, count);	833	res = write (fd, buf, count);
636	lseek (fd, offset, SEEK_SET);	834	lseek (fd, offset, SEEK_SET);
637	pthread_mutex_unlock (&preadwritelock);	835	UNLOCK (preadwritelock);
638		836
639	return res;	837	return res;
640	}	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
641	#endif	867	#endif
642		868
643	#if !HAVE_FDATASYNC	869	#if !HAVE_FDATASYNC
644	# define fdatasync fsync	870	# define fdatasync fsync
645	#endif	871	#endif
646		872
647	#if !HAVE_READAHEAD	873	#if !HAVE_READAHEAD
648	# define readahead aio_readahead	874	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
649		875
650	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)
651	{	877	{
652	dBUF;	878	dBUF;
653		879
654	while (count > 0)	880	while (count > 0)
655	{	881	{
…		…
658	pread (fd, aio_buf, len, offset);	884	pread (fd, aio_buf, len, offset);
659	offset += len;	885	offset += len;
660	count -= len;	886	count -= len;
661	}	887	}
662		888
663	fBUF;
664
665	errno = 0;	889	errno = 0;
666	}	890	}
		891
667	#endif	892	#endif
668		893
669	#if !HAVE_READDIR_R	894	#if !HAVE_READDIR_R
670	# define readdir_r aio_readdir_r	895	# define readdir_r aio_readdir_r
671		896
672	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	897	static mutex_t readdirlock = MUTEX_INIT;
673		898
674	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)
675	{	900	{
676	struct dirent *e;	901	struct dirent *e;
677	int errorno;	902	int errorno;
678		903
679	pthread_mutex_lock (&readdirlock);	904	LOCK (readdirlock);
680		905
681	e = readdir (dirp);	906	e = readdir (dirp);
682	errorno = errno;	907	errorno = errno;
683		908
684	if (e)	909	if (e)
…		…
687	strcpy (ent->d_name, e->d_name);	912	strcpy (ent->d_name, e->d_name);
688	}	913	}
689	else	914	else
690	*res = 0;	915	*res = 0;
691		916
692	pthread_mutex_unlock (&readdirlock);	917	UNLOCK (readdirlock);
693		918
694	errno = errorno;	919	errno = errorno;
695	return e ? 0 : -1;	920	return e ? 0 : -1;
696	}	921	}
697	#endif	922	#endif
698		923
699	/* sendfile always needs emulation */	924	/* sendfile always needs emulation */
700	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)
701	{	926	{
702	ssize_t res;	927	ssize_t res;
703		928
704	if (!count)	929	if (!count)
705	return 0;	930	return 0;
…		…
716	{	941	{
717	off_t sbytes;	942	off_t sbytes;
718	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	943	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
719		944
720	if (res < 0 && sbytes)	945	if (res < 0 && sbytes)
721	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	946	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
722	res = sbytes;	947	res = sbytes;
723	}	948	}
724		949
725	# elif __hpux	950	# elif __hpux
726	res = sendfile (ofd, ifd, offset, count, 0, 0);	951	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
782		1007
783	offset += cnt;	1008	offset += cnt;
784	res += cnt;	1009	res += cnt;
785	count -= cnt;	1010	count -= cnt;
786	}	1011	}
787
788	fBUF;
789	}	1012	}
790		1013
791	return res;	1014	return res;
792	}	1015	}
793		1016
794	/* read a full directory */	1017	/* read a full directory */
795	static int scandir_ (const char *path, void **namesp)	1018	static void scandir_ (aio_req req, worker *self)
796	{	1019	{
797	DIR *dirp;	1020	DIR *dirp;
798	union	1021	union
799	{	1022	{
800	struct dirent d;	1023	struct dirent d;
…		…
805	int memlen = 4096;	1028	int memlen = 4096;
806	int memofs = 0;	1029	int memofs = 0;
807	int res = 0;	1030	int res = 0;
808	int errorno;	1031	int errorno;
809		1032
810	dirp = opendir (path);	1033	LOCK (wrklock);
811	if (!dirp)	1034	self->dirp = dirp = opendir (req->ptr1);
812	return -1;
813
814	u = malloc (sizeof (*u));	1035	self->dbuf = u = malloc (sizeof (*u));
		1036	req->flags |= FLAG_PTR2_FREE;
815	names = malloc (memlen);	1037	req->ptr2 = names = malloc (memlen);
		1038	UNLOCK (wrklock);
816		1039
817	if (u && names)	1040	if (dirp && u && names)
818	for (;;)	1041	for (;;)
819	{	1042	{
820	errno = 0;	1043	errno = 0;
821	readdir_r (dirp, &u->d, &entp);	1044	readdir_r (dirp, &u->d, &entp);
822		1045
…		…
832	res++;	1055	res++;
833		1056
834	while (memofs + len > memlen)	1057	while (memofs + len > memlen)
835	{	1058	{
836	memlen *= 2;	1059	memlen *= 2;
		1060	LOCK (wrklock);
837	names = realloc (names, memlen);	1061	req->ptr2 = names = realloc (names, memlen);
		1062	UNLOCK (wrklock);
		1063
838	if (!names)	1064	if (!names)
839	break;	1065	break;
840	}	1066	}
841		1067
842	memcpy (names + memofs, name, len);	1068	memcpy (names + memofs, name, len);
843	memofs += len;	1069	memofs += len;
844	}	1070	}
845	}	1071	}
846		1072
847	errorno = errno;
848	free (u);
849	closedir (dirp);
850
851	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 (;;)
852	{	1092	{
853	free (names);	1093	ts.tv_sec = time (0) + IDLE_TIMEOUT;
854	errno = errorno;
855	res = -1;
856	}
857		1094
858	*namesp = (void *)names;	1095	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		1096
873	for (;;)	1097	for (;;)
874	{	1098	{
875	req = reqq_shift (&req_queue);	1099	self->req = req = reqq_shift (&req_queue);
876		1100
877	if (req)	1101	if (req)
878	break;	1102	break;
879		1103
880	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;
881	}	1125	}
882		1126
883	pthread_mutex_unlock (&reqlock);	1127	--nready;
		1128
		1129	UNLOCK (reqlock);
884		1130
885	errno = 0; /* strictly unnecessary */	1131	errno = 0; /* strictly unnecessary */
886	type = req->type; /* remember type for QUIT check */
887		1132
888	if (!(req->flags & FLAG_CANCELLED))	1133	if (!(req->flags & FLAG_CANCELLED))
889	switch (type)	1134	switch (req->type)
890	{	1135	{
891	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;
892	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;
893		1138
894	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;
895	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;
896		1141
897	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;
898	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;
899	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;
900		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
901	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;
902	case REQ_CLOSE: req->result = close (req->fd); break;	1152	case REQ_CLOSE: req->result = close (req->int1); break;
903	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1153	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
904	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;
905	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1156	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
906	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1157	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
907	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;
908		1161
909	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1162	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
910	case REQ_FSYNC: req->result = fsync (req->fd); break;	1163	case REQ_FSYNC: req->result = fsync (req->int1); break;
911	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1164	case REQ_READDIR: scandir_ (req, self); break;
912		1165
913	case REQ_BUSY:	1166	case REQ_BUSY:
914	{	1167	{
915	struct timeval tv;	1168	struct timeval tv;
916		1169
917	tv.tv_sec = req->fd;	1170	tv.tv_sec = req->nv1;
918	tv.tv_usec = req->fd2;	1171	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
919		1172
920	req->result = select (0, 0, 0, 0, &tv);	1173	req->result = select (0, 0, 0, 0, &tv);
921	}	1174	}
922		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
923	case REQ_GROUP:	1200	case REQ_GROUP:
924	case REQ_NOP:	1201	case REQ_NOP:
		1202	break;
		1203
925	case REQ_QUIT:	1204	case REQ_QUIT:
926	break;	1205	goto quit;
927		1206
928	default:	1207	default:
929	req->result = ENOSYS;	1208	req->result = -1;
930	break;	1209	break;
931	}	1210	}
932		1211
933	req->errorno = errno;	1212	req->errorno = errno;
934		1213
935	pthread_mutex_lock (&reslock);	1214	LOCK (reslock);
		1215
		1216	++npending;
936		1217
937	if (!reqq_push (&res_queue, req))	1218	if (!reqq_push (&res_queue, req))
		1219	{
938	/* write a dummy byte to the pipe so fh becomes ready */	1220	/* write a dummy byte to the pipe so fh becomes ready */
939	write (respipe [1], &respipe, 1);	1221	write (respipe [1], &respipe, 1);
940		1222
941	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);
942	}	1232	}
943	while (type != REQ_QUIT);	1233
		1234	quit:
		1235	LOCK (wrklock);
		1236	worker_free (self);
		1237	UNLOCK (wrklock);
944		1238
945	return 0;	1239	return 0;
946	}	1240	}
947		1241
948	/*****************************************************************************/	1242	/*****************************************************************************/
949		1243
950	static void atfork_prepare (void)	1244	static void atfork_prepare (void)
951	{	1245	{
952	pthread_mutex_lock (&reqlock);	1246	LOCK (wrklock);
953	pthread_mutex_lock (&reslock);	1247	LOCK (reqlock);
		1248	LOCK (reslock);
954	#if !HAVE_PREADWRITE	1249	#if !HAVE_PREADWRITE
955	pthread_mutex_lock (&preadwritelock);	1250	LOCK (preadwritelock);
956	#endif	1251	#endif
957	#if !HAVE_READDIR_R	1252	#if !HAVE_READDIR_R
958	pthread_mutex_lock (&readdirlock);	1253	LOCK (readdirlock);
959	#endif	1254	#endif
960	}	1255	}
961		1256
962	static void atfork_parent (void)	1257	static void atfork_parent (void)
963	{	1258	{
964	#if !HAVE_READDIR_R	1259	#if !HAVE_READDIR_R
965	pthread_mutex_unlock (&readdirlock);	1260	UNLOCK (readdirlock);
966	#endif	1261	#endif
967	#if !HAVE_PREADWRITE	1262	#if !HAVE_PREADWRITE
968	pthread_mutex_unlock (&preadwritelock);	1263	UNLOCK (preadwritelock);
969	#endif	1264	#endif
970	pthread_mutex_unlock (&reslock);	1265	UNLOCK (reslock);
971	pthread_mutex_unlock (&reqlock);	1266	UNLOCK (reqlock);
		1267	UNLOCK (wrklock);
972	}	1268	}
973		1269
974	static void atfork_child (void)	1270	static void atfork_child (void)
975	{	1271	{
976	aio_req prv;	1272	aio_req prv;
977
978	started = 0;
979		1273
980	while (prv = reqq_shift (&req_queue))	1274	while (prv = reqq_shift (&req_queue))
981	req_free (prv);	1275	req_free (prv);
982		1276
983	while (prv = reqq_shift (&res_queue))	1277	while (prv = reqq_shift (&res_queue))
984	req_free (prv);	1278	req_free (prv);
985		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
986	close (respipe [0]);	1297	close (respipe [0]);
987	close (respipe [1]);	1298	close (respipe [1]);
988	create_pipe ();	1299	create_pipe ();
989		1300
990	atfork_parent ();	1301	atfork_parent ();
…		…
1016	PROTOTYPES: ENABLE	1327	PROTOTYPES: ENABLE
1017		1328
1018	BOOT:	1329	BOOT:
1019	{	1330	{
1020	HV *stash = gv_stashpv ("IO::AIO", 1);	1331	HV *stash = gv_stashpv ("IO::AIO", 1);
		1332
1021	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1333	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1022	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1334	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1023	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));
1024		1340
1025	create_pipe ();	1341	create_pipe ();
1026	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1342	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1027	}	1343	}
1028		1344
1029	void	1345	void
1030	min_parallel (nthreads)	1346	max_poll_reqs (int nreqs)
1031	int nthreads
1032	PROTOTYPE: $	1347	PROTOTYPE: $
		1348	CODE:
		1349	max_poll_reqs = nreqs;
1033		1350
1034	void	1351	void
1035	max_parallel (nthreads)	1352	max_poll_time (double nseconds)
1036	int nthreads
1037	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);
1038		1370
1039	int	1371	int
1040	max_outstanding (nreqs)	1372	max_outstanding (int maxreqs)
1041	int nreqs	1373	PROTOTYPE: $
1042	PROTOTYPE: $
1043	CODE:	1374	CODE:
1044	RETVAL = max_outstanding;	1375	RETVAL = max_outstanding;
1045	max_outstanding = nreqs;	1376	max_outstanding = maxreqs;
		1377	OUTPUT:
		1378	RETVAL
1046		1379
1047	void	1380	void
1048	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1381	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: $$$;$	1382	PROTOTYPE: $$$;$
1054	PPCODE:	1383	PPCODE:
1055	{	1384	{
1056	dREQ;	1385	dREQ;
1057		1386
1058	req->type = REQ_OPEN;	1387	req->type = REQ_OPEN;
1059	req->data = newSVsv (pathname);	1388	req->sv1 = newSVsv (pathname);
1060	req->dataptr = SvPVbyte_nolen (req->data);	1389	req->ptr1 = SvPVbyte_nolen (req->sv1);
1061	req->fd = flags;	1390	req->int1 = flags;
1062	req->mode = mode;	1391	req->mode = mode;
1063		1392
1064	REQ_SEND;	1393	REQ_SEND;
1065	}	1394	}
1066		1395
1067	void	1396	void
1068	aio_close (fh,callback=&PL_sv_undef)	1397	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1069	SV * fh
1070	SV * callback
1071	PROTOTYPE: $;$	1398	PROTOTYPE: $;$
1072	ALIAS:	1399	ALIAS:
1073	aio_close = REQ_CLOSE	1400	aio_close = REQ_CLOSE
1074	aio_fsync = REQ_FSYNC	1401	aio_fsync = REQ_FSYNC
1075	aio_fdatasync = REQ_FDATASYNC	1402	aio_fdatasync = REQ_FDATASYNC
1076	PPCODE:	1403	PPCODE:
1077	{	1404	{
1078	dREQ;	1405	dREQ;
1079		1406
1080	req->type = ix;	1407	req->type = ix;
1081	req->fh = newSVsv (fh);	1408	req->sv1 = newSVsv (fh);
1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1409	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1083		1410
1084	REQ_SEND (req);	1411	REQ_SEND (req);
1085	}	1412	}
1086		1413
1087	void	1414	void
1088	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)
1089	SV * fh
1090	UV offset
1091	UV length
1092	SV * data
1093	UV dataoffset
1094	SV * callback
1095	ALIAS:	1416	ALIAS:
1096	aio_read = REQ_READ	1417	aio_read = REQ_READ
1097	aio_write = REQ_WRITE	1418	aio_write = REQ_WRITE
1098	PROTOTYPE: $$$$$;$	1419	PROTOTYPE: $$$$$;$
1099	PPCODE:	1420	PPCODE:
1100	{	1421	{
1101	aio_req req;
1102	STRLEN svlen;	1422	STRLEN svlen;
1103	char *svptr = SvPVbyte (data, svlen);	1423	char *svptr = SvPVbyte (data, svlen);
1104		1424
1105	SvUPGRADE (data, SVt_PV);	1425	SvUPGRADE (data, SVt_PV);
1106	SvPOK_on (data);	1426	SvPOK_on (data);
…		…
1118	length = svlen - dataoffset;	1438	length = svlen - dataoffset;
1119	}	1439	}
1120	else	1440	else
1121	{	1441	{
1122	/* read: grow scalar as necessary */	1442	/* read: grow scalar as necessary */
1123	svptr = SvGROW (data, length + dataoffset);	1443	svptr = SvGROW (data, length + dataoffset + 1);
1124	}	1444	}
1125		1445
1126	if (length < 0)	1446	if (length < 0)
1127	croak ("length must not be negative");	1447	croak ("length must not be negative");
1128		1448
1129	{	1449	{
1130	dREQ;	1450	dREQ;
1131		1451
1132	req->type = ix;	1452	req->type = ix;
1133	req->fh = newSVsv (fh);	1453	req->sv1 = newSVsv (fh);
1134	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1454	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1135	: IoOFP (sv_2io (fh)));	1455	: IoOFP (sv_2io (fh)));
1136	req->offset = offset;	1456	req->offs = offset;
1137	req->length = length;	1457	req->size = length;
1138	req->data = SvREFCNT_inc (data);	1458	req->sv2 = SvREFCNT_inc (data);
1139	req->dataptr = (char *)svptr + dataoffset;	1459	req->ptr1 = (char *)svptr + dataoffset;
		1460	req->stroffset = dataoffset;
1140		1461
1141	if (!SvREADONLY (data))	1462	if (!SvREADONLY (data))
1142	{	1463	{
1143	SvREADONLY_on (data);	1464	SvREADONLY_on (data);
1144	req->data2ptr = (void *)data;	1465	req->flags |= FLAG_SV1_RO_OFF;
1145	}	1466	}
1146		1467
1147	REQ_SEND;	1468	REQ_SEND;
1148	}	1469	}
1149	}	1470	}
1150		1471
1151	void	1472	void
		1473	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1474	PROTOTYPE: $$;$
		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
1152	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)
1153	SV * out_fh
1154	SV * in_fh
1155	UV in_offset
1156	UV length
1157	SV * callback
1158	PROTOTYPE: $$$$;$	1494	PROTOTYPE: $$$$;$
1159	PPCODE:	1495	PPCODE:
1160	{	1496	{
1161	dREQ;	1497	dREQ;
1162		1498
1163	req->type = REQ_SENDFILE;	1499	req->type = REQ_SENDFILE;
1164	req->fh = newSVsv (out_fh);	1500	req->sv1 = newSVsv (out_fh);
1165	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1501	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1166	req->fh2 = newSVsv (in_fh);	1502	req->sv2 = newSVsv (in_fh);
1167	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1503	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1168	req->offset = in_offset;	1504	req->offs = in_offset;
1169	req->length = length;	1505	req->size = length;
1170		1506
1171	REQ_SEND;	1507	REQ_SEND;
1172	}	1508	}
1173		1509
1174	void	1510	void
1175	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1511	aio_readahead (SV *fh, UV offset, IV length, SV *callback=&PL_sv_undef)
1176	SV * fh
1177	UV offset
1178	IV length
1179	SV * callback
1180	PROTOTYPE: $$$;$	1512	PROTOTYPE: $$$;$
1181	PPCODE:	1513	PPCODE:
1182	{	1514	{
1183	dREQ;	1515	dREQ;
1184		1516
1185	req->type = REQ_READAHEAD;	1517	req->type = REQ_READAHEAD;
1186	req->fh = newSVsv (fh);	1518	req->sv1 = newSVsv (fh);
1187	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1519	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1188	req->offset = offset;	1520	req->offs = offset;
1189	req->length = length;	1521	req->size = length;
1190		1522
1191	REQ_SEND;	1523	REQ_SEND;
1192	}	1524	}
1193		1525
1194	void	1526	void
1195	aio_stat (fh_or_path,callback=&PL_sv_undef)	1527	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1196	SV * fh_or_path
1197	SV * callback
1198	ALIAS:	1528	ALIAS:
1199	aio_stat = REQ_STAT	1529	aio_stat = REQ_STAT
1200	aio_lstat = REQ_LSTAT	1530	aio_lstat = REQ_LSTAT
1201	PPCODE:	1531	PPCODE:
1202	{	1532	{
1203	dREQ;	1533	dREQ;
1204		1534
1205	New (0, req->statdata, 1, Stat_t);	1535	req->ptr2 = malloc (sizeof (Stat_t));
1206	if (!req->statdata)	1536	if (!req->ptr2)
1207	{	1537	{
1208	req_free (req);	1538	req_free (req);
1209	croak ("out of memory during aio_req->statdata allocation");	1539	croak ("out of memory during aio_stat statdata allocation");
1210	}	1540	}
		1541
		1542	req->flags |= FLAG_PTR2_FREE;
		1543	req->sv1 = newSVsv (fh_or_path);
1211		1544
1212	if (SvPOK (fh_or_path))	1545	if (SvPOK (fh_or_path))
1213	{	1546	{
1214	req->type = ix;	1547	req->type = ix;
1215	req->data = newSVsv (fh_or_path);
1216	req->dataptr = SvPVbyte_nolen (req->data);	1548	req->ptr1 = SvPVbyte_nolen (req->sv1);
1217	}	1549	}
1218	else	1550	else
1219	{	1551	{
1220	req->type = REQ_FSTAT;	1552	req->type = REQ_FSTAT;
1221	req->fh = newSVsv (fh_or_path);
1222	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1553	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1223	}	1554	}
1224		1555
1225	REQ_SEND;	1556	REQ_SEND;
1226	}	1557	}
1227		1558
1228	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
1229	aio_unlink (pathname,callback=&PL_sv_undef)	1631	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1230	SV * pathname
1231	SV * callback
1232	ALIAS:	1632	ALIAS:
1233	aio_unlink = REQ_UNLINK	1633	aio_unlink = REQ_UNLINK
1234	aio_rmdir = REQ_RMDIR	1634	aio_rmdir = REQ_RMDIR
1235	aio_readdir = REQ_READDIR	1635	aio_readdir = REQ_READDIR
1236	PPCODE:	1636	PPCODE:
1237	{	1637	{
1238	dREQ;	1638	dREQ;
1239		1639
1240	req->type = ix;	1640	req->type = ix;
1241	req->data = newSVsv (pathname);	1641	req->sv1 = newSVsv (pathname);
1242	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;
1243		1652
		1653	req->type = REQ_MKDIR;
		1654	req->sv1 = newSVsv (pathname);
		1655	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1656	req->mode = mode;
		1657
1244	REQ_SEND;	1658	REQ_SEND;
1245	}	1659	}
1246		1660
1247	void	1661	void
1248	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1662	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1249	SV * oldpath
1250	SV * newpath
1251	SV * callback
1252	ALIAS:	1663	ALIAS:
1253	aio_link = REQ_LINK	1664	aio_link = REQ_LINK
1254	aio_symlink = REQ_SYMLINK	1665	aio_symlink = REQ_SYMLINK
1255	aio_rename = REQ_RENAME	1666	aio_rename = REQ_RENAME
1256	PPCODE:	1667	PPCODE:
1257	{	1668	{
1258	dREQ;	1669	dREQ;
1259		1670
1260	req->type = ix;	1671	req->type = ix;
1261	req->fh = newSVsv (oldpath);	1672	req->sv2 = newSVsv (oldpath);
1262	req->data2ptr = SvPVbyte_nolen (req->fh);	1673	req->ptr2 = SvPVbyte_nolen (req->sv2);
1263	req->data = newSVsv (newpath);	1674	req->sv1 = newSVsv (newpath);
1264	req->dataptr = SvPVbyte_nolen (req->data);	1675	req->ptr1 = SvPVbyte_nolen (req->sv1);
1265		1676
1266	REQ_SEND;	1677	REQ_SEND;
1267	}	1678	}
1268		1679
1269	void	1680	void
1270	aio_busy (delay,callback=&PL_sv_undef)	1681	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1271	double delay
1272	SV * callback
1273	PPCODE:	1682	PPCODE:
1274	{	1683	{
1275	dREQ;	1684	dREQ;
		1685
		1686	req->type = REQ_MKNOD;
		1687	req->sv1 = newSVsv (pathname);
		1688	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1689	req->mode = (mode_t)mode;
		1690	req->offs = dev;
		1691
		1692	REQ_SEND;
		1693	}
		1694
		1695	void
		1696	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1697	PPCODE:
		1698	{
		1699	dREQ;
1276		1700
1277	req->type = REQ_BUSY;	1701	req->type = REQ_BUSY;
1278	req->fd = delay < 0. ? 0 : delay;	1702	req->nv1 = delay < 0. ? 0. : delay;
1279	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1280		1703
1281	REQ_SEND;	1704	REQ_SEND;
1282	}	1705	}
1283		1706
1284	void	1707	void
1285	aio_group (callback=&PL_sv_undef)	1708	aio_group (SV *callback=&PL_sv_undef)
1286	SV * callback
1287	PROTOTYPE: ;$	1709	PROTOTYPE: ;$
1288	PPCODE:	1710	PPCODE:
1289	{	1711	{
1290	dREQ;	1712	dREQ;
1291		1713
1292	req->type = REQ_GROUP;	1714	req->type = REQ_GROUP;
		1715
1293	req_send (req);	1716	req_send (req);
1294
1295	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1717	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1296	}	1718	}
1297		1719
1298	void	1720	void
1299	aio_nop (callback=&PL_sv_undef)	1721	aio_nop (SV *callback=&PL_sv_undef)
1300	SV * callback
1301	PPCODE:	1722	PPCODE:
1302	{	1723	{
1303	dREQ;	1724	dREQ;
1304		1725
1305	req->type = REQ_NOP;	1726	req->type = REQ_NOP;
1306		1727
1307	REQ_SEND;	1728	REQ_SEND;
1308	}	1729	}
1309		1730
1310	void	1731	int
1311	aioreq_pri (int pri = DEFAULT_PRI)	1732	aioreq_pri (int pri = 0)
1312	CODE:	1733	PROTOTYPE: ;$
		1734	CODE:
		1735	RETVAL = next_pri - PRI_BIAS;
		1736	if (items > 0)
		1737	{
1313	if (pri < PRI_MIN) pri = PRI_MIN;	1738	if (pri < PRI_MIN) pri = PRI_MIN;
1314	if (pri > PRI_MAX) pri = PRI_MAX;	1739	if (pri > PRI_MAX) pri = PRI_MAX;
1315	next_pri = pri + PRI_BIAS;	1740	next_pri = pri + PRI_BIAS;
		1741	}
		1742	OUTPUT:
		1743	RETVAL
1316		1744
1317	void	1745	void
1318	aioreq_nice (int nice = 0)	1746	aioreq_nice (int nice = 0)
1319	CODE:	1747	CODE:
1320	nice = next_pri - nice;	1748	nice = next_pri - nice;
1321	if (nice < PRI_MIN) nice = PRI_MIN;	1749	if (nice < PRI_MIN) nice = PRI_MIN;
1322	if (nice > PRI_MAX) nice = PRI_MAX;	1750	if (nice > PRI_MAX) nice = PRI_MAX;
1323	next_pri = nice + PRI_BIAS;	1751	next_pri = nice + PRI_BIAS;
1324		1752
1325	void	1753	void
1326	flush ()	1754	flush ()
1327	PROTOTYPE:	1755	PROTOTYPE:
1328	CODE:	1756	CODE:
…		…
1330	{	1758	{
1331	poll_wait ();	1759	poll_wait ();
1332	poll_cb ();	1760	poll_cb ();
1333	}	1761	}
1334		1762
1335	void	1763	int
1336	poll()	1764	poll()
1337	PROTOTYPE:	1765	PROTOTYPE:
1338	CODE:	1766	CODE:
1339	if (nreqs)
1340	{
1341	poll_wait ();	1767	poll_wait ();
1342	poll_cb ();	1768	RETVAL = poll_cb ();
1343	}	1769	OUTPUT:
		1770	RETVAL
1344		1771
1345	int	1772	int
1346	poll_fileno()	1773	poll_fileno()
1347	PROTOTYPE:	1774	PROTOTYPE:
1348	CODE:	1775	CODE:
…		…
1360		1787
1361	void	1788	void
1362	poll_wait()	1789	poll_wait()
1363	PROTOTYPE:	1790	PROTOTYPE:
1364	CODE:	1791	CODE:
1365	if (nreqs)
1366	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	}
1367		1830
1368	int	1831	int
1369	nreqs()	1832	nreqs()
1370	PROTOTYPE:	1833	PROTOTYPE:
1371	CODE:	1834	CODE:
1372	RETVAL = nreqs;	1835	RETVAL = nreqs;
1373	OUTPUT:	1836	OUTPUT:
1374	RETVAL	1837	RETVAL
1375		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
1376	PROTOTYPES: DISABLE	1865	PROTOTYPES: DISABLE
1377		1866
1378	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1867	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1379		1868
1380	void	1869	void
…		…
1395	PPCODE:	1884	PPCODE:
1396	{	1885	{
1397	int i;	1886	int i;
1398	aio_req req;	1887	aio_req req;
1399		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
1400	if (grp->fd == 2)	1892	if (grp->int1 == 2)
1401	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");
1402		1894
1403	for (i = 1; i < items; ++i )	1895	for (i = 1; i < items; ++i )
1404	{	1896	{
1405	if (GIMME_V != G_VOID)	1897	if (GIMME_V != G_VOID)
…		…
1407		1899
1408	req = SvAIO_REQ (ST (i));	1900	req = SvAIO_REQ (ST (i));
1409		1901
1410	if (req)	1902	if (req)
1411	{	1903	{
1412	++grp->length;	1904	++grp->size;
1413	req->grp = grp;	1905	req->grp = grp;
1414		1906
1415	req->grp_prev = 0;	1907	req->grp_prev = 0;
1416	req->grp_next = grp->grp_first;	1908	req->grp_next = grp->grp_first;
1417		1909
…		…
1422	}	1914	}
1423	}	1915	}
1424	}	1916	}
1425		1917
1426	void	1918	void
		1919	cancel_subs (aio_req_ornot req)
		1920	CODE:
		1921	req_cancel_subs (req);
		1922
		1923	void
1427	result (aio_req grp, ...)	1924	result (aio_req grp, ...)
1428	CODE:	1925	CODE:
1429	{	1926	{
1430	int i;	1927	int i;
		1928	AV *av;
		1929
		1930	grp->errorno = errno;
		1931
1431	AV *av = newAV ();	1932	av = newAV ();
1432		1933
1433	for (i = 1; i < items; ++i )	1934	for (i = 1; i < items; ++i )
1434	av_push (av, newSVsv (ST (i)));	1935	av_push (av, newSVsv (ST (i)));
1435		1936
1436	SvREFCNT_dec (grp->data);	1937	SvREFCNT_dec (grp->sv1);
1437	grp->data = (SV *)av;	1938	grp->sv1 = (SV *)av;
1438	}	1939	}
		1940
		1941	void
		1942	errno (aio_req grp, int errorno = errno)
		1943	CODE:
		1944	grp->errorno = errorno;
1439		1945
1440	void	1946	void
1441	limit (aio_req grp, int limit)	1947	limit (aio_req grp, int limit)
1442	CODE:	1948	CODE:
1443	grp->fd2 = limit;	1949	grp->int2 = limit;
1444	aio_grp_feed (grp);	1950	aio_grp_feed (grp);
1445		1951
1446	void	1952	void
1447	feed (aio_req grp, SV *callback=&PL_sv_undef)	1953	feed (aio_req grp, SV *callback=&PL_sv_undef)
1448	CODE:	1954	CODE:
1449	{	1955	{
1450	SvREFCNT_dec (grp->fh2);	1956	SvREFCNT_dec (grp->sv2);
1451	grp->fh2 = newSVsv (callback);	1957	grp->sv2 = newSVsv (callback);
1452		1958
1453	if (grp->fd2 <= 0)	1959	if (grp->int2 <= 0)
1454	grp->fd2 = 2;	1960	grp->int2 = 2;
1455		1961
1456	aio_grp_feed (grp);	1962	aio_grp_feed (grp);
1457	}	1963	}
1458		1964

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