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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.68 by root, Tue Oct 24 03:40:25 2006 UTC vs.
Revision 1.101 by root, Fri Jun 1 13:25:51 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
		51	/* use NV for 32 bit perls as it allows larger offsets */
		52	#if IVSIZE >= 8
		53	# define SvVAL64 SvIV
		54	#else
		55	# define SvVAL64 SvNV
		56	#endif
		57
60	#define dBUF \	58	#define dBUF \
		59	char *aio_buf; \
		60	LOCK (wrklock); \
61	char *aio_buf = malloc (AIO_BUFSIZE); \	61	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		62	UNLOCK (wrklock); \
62	if (!aio_buf) \	63	if (!aio_buf) \
63	return -1;	64	return -1;
64		65
65	#define fBUF free (aio_buf)	66	typedef SV SV8; /* byte-sv, used for argument-checking */
66		67
67	enum {	68	enum {
68	REQ_QUIT,	69	REQ_QUIT,
69	REQ_OPEN, REQ_CLOSE,	70	REQ_OPEN, REQ_CLOSE,
70	REQ_READ, REQ_WRITE, REQ_READAHEAD,	71	REQ_READ, REQ_WRITE,
71	REQ_SENDFILE,	72	REQ_READAHEAD, REQ_SENDFILE,
72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	73	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
		74	REQ_UTIME, REQ_FUTIME,
		75	REQ_CHMOD, REQ_FCHMOD,
		76	REQ_CHOWN, REQ_FCHOWN,
73	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	78	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
75	REQ_READDIR,	79	REQ_MKNOD, REQ_READDIR,
76	REQ_LINK, REQ_SYMLINK,	80	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
77	REQ_GROUP, REQ_NOP,	81	REQ_GROUP, REQ_NOP,
78	REQ_SLEEP,	82	REQ_BUSY,
79	};	83	};
80		84
81	#define AIO_REQ_KLASS "IO::AIO::REQ"	85	#define AIO_REQ_KLASS "IO::AIO::REQ"
82	#define AIO_GRP_KLASS "IO::AIO::GRP"	86	#define AIO_GRP_KLASS "IO::AIO::GRP"
83		87
84	typedef struct aio_cb	88	typedef struct aio_cb
85	{	89	{
86	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
87		91
88	SV *data, *callback;	92	SV *callback;
89	SV *fh, *fh2;	93	SV *sv1, *sv2;
90	void *dataptr, *data2ptr;	94	void *ptr1, *ptr2;
91	Stat_t *statdata;
92	off_t offset;	95	off_t offs;
93	size_t length;	96	size_t size;
94	ssize_t result;	97	ssize_t result;
		98	double nv1, nv2;
95		99
96	STRLEN dataoffset;	100	STRLEN stroffset;
97	int type;	101	int type;
98	int fd, fd2;	102	int int1, int2, int3;
99	int errorno;	103	int errorno;
100	mode_t mode; /* open */	104	mode_t mode; /* open */
101		105
102	unsigned char flags;	106	unsigned char flags;
103	unsigned char pri;	107	unsigned char pri;
…		…
105	SV *self; /* the perl counterpart of this request, if any */	109	SV *self; /* the perl counterpart of this request, if any */
106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
107	} aio_cb;	111	} aio_cb;
108		112
109	enum {	113	enum {
110	FLAG_CANCELLED = 0x01,	114	FLAG_CANCELLED = 0x01, /* request was cancelled */
		115	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		116	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
111	};	117	};
112		118
113	typedef aio_cb *aio_req;	119	typedef aio_cb *aio_req;
114	typedef aio_cb *aio_req_ornot;	120	typedef aio_cb *aio_req_ornot;
115		121
…		…
120	DEFAULT_PRI = 0,	126	DEFAULT_PRI = 0,
121	PRI_BIAS = -PRI_MIN,	127	PRI_BIAS = -PRI_MIN,
122	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	128	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
123	};	129	};
124		130
		131	#define AIO_TICKS ((1000000 + 1023) >> 10)
		132
		133	static unsigned int max_poll_time = 0;
		134	static unsigned int max_poll_reqs = 0;
		135
		136	/* calculcate time difference in ~1/AIO_TICKS of a second */
		137	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		138	{
		139	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		140	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		141	}
		142
		143	static thread_t main_tid;
		144	static int main_sig;
		145	static int block_sig_level;
		146
		147	void block_sig ()
		148	{
		149	sigset_t ss;
		150
		151	if (block_sig_level++)
		152	return;
		153
		154	if (!main_sig)
		155	return;
		156
		157	sigemptyset (&ss);
		158	sigaddset (&ss, main_sig);
		159	pthread_sigmask (SIG_BLOCK, &ss, 0);
		160	}
		161
		162	void unblock_sig ()
		163	{
		164	sigset_t ss;
		165
		166	if (--block_sig_level)
		167	return;
		168
		169	if (!main_sig)
		170	return;
		171
		172	sigemptyset (&ss);
		173	sigaddset (&ss, main_sig);
		174	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		175	}
		176
125	static int next_pri = DEFAULT_PRI + PRI_BIAS;	177	static int next_pri = DEFAULT_PRI + PRI_BIAS;
126		178
127	static int started, wanted;	179	static unsigned int started, idle, wanted;
128	static volatile int nreqs;	180
129	static int max_outstanding = 1<<30;	181	/* worker threads management */
		182	static mutex_t wrklock = MUTEX_INIT;
		183
		184	typedef struct worker {
		185	/* locked by wrklock */
		186	struct worker *prev, *next;
		187
		188	thread_t tid;
		189
		190	/* locked by reslock, reqlock or wrklock */
		191	aio_req req; /* currently processed request */
		192	void *dbuf;
		193	DIR *dirp;
		194	} worker;
		195
		196	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		197
		198	static void worker_clear (worker *wrk)
		199	{
		200	if (wrk->dirp)
		201	{
		202	closedir (wrk->dirp);
		203	wrk->dirp = 0;
		204	}
		205
		206	if (wrk->dbuf)
		207	{
		208	free (wrk->dbuf);
		209	wrk->dbuf = 0;
		210	}
		211	}
		212
		213	static void worker_free (worker *wrk)
		214	{
		215	wrk->next->prev = wrk->prev;
		216	wrk->prev->next = wrk->next;
		217
		218	free (wrk);
		219	}
		220
		221	static volatile unsigned int nreqs, nready, npending;
		222	static volatile unsigned int max_idle = 4;
		223	static volatile unsigned int max_outstanding = 0xffffffff;
130	static int respipe [2];	224	static int respipe [2];
131		225
132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	226	static mutex_t reslock = MUTEX_INIT;
133	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	227	static mutex_t reqlock = MUTEX_INIT;
		228	static cond_t reqwait = COND_INIT;
		229
		230	#if WORDACCESS_UNSAFE
		231
		232	static unsigned int get_nready ()
		233	{
		234	unsigned int retval;
		235
		236	LOCK (reqlock);
		237	retval = nready;
		238	UNLOCK (reqlock);
		239
		240	return retval;
		241	}
		242
		243	static unsigned int get_npending ()
		244	{
		245	unsigned int retval;
		246
		247	LOCK (reslock);
		248	retval = npending;
		249	UNLOCK (reslock);
		250
		251	return retval;
		252	}
		253
		254	static unsigned int get_nthreads ()
		255	{
		256	unsigned int retval;
		257
		258	LOCK (wrklock);
		259	retval = started;
		260	UNLOCK (wrklock);
		261
		262	return retval;
		263	}
		264
134	#else	265	#else
135	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	266
		267	# define get_nready() nready
		268	# define get_npending() npending
		269	# define get_nthreads() started
		270
136	#endif	271	#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		272
142	/*	273	/*
143	* a somewhat faster data structure might be nice, but	274	* a somewhat faster data structure might be nice, but
144	* with 8 priorities this actually needs <20 insns	275	* with 8 priorities this actually needs <20 insns
145	* per shift, the most expensive operation.	276	* per shift, the most expensive operation.
…		…
191	}	322	}
192		323
193	abort ();	324	abort ();
194	}	325	}
195		326
		327	static int poll_cb ();
196	static void req_invoke (aio_req req);	328	static int req_invoke (aio_req req);
		329	static void req_destroy (aio_req req);
197	static void req_free (aio_req req);	330	static void req_cancel (aio_req req);
198		331
199	/* must be called at most once */	332	/* must be called at most once */
200	static SV *req_sv (aio_req req, const char *klass)	333	static SV *req_sv (aio_req req, const char *klass)
201	{	334	{
202	if (!req->self)	335	if (!req->self)
…		…
220	return mg ? (aio_req)mg->mg_ptr : 0;	353	return mg ? (aio_req)mg->mg_ptr : 0;
221	}	354	}
222		355
223	static void aio_grp_feed (aio_req grp)	356	static void aio_grp_feed (aio_req grp)
224	{	357	{
		358	block_sig ();
		359
225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	360	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
226	{	361	{
227	int old_len = grp->length;	362	int old_len = grp->size;
228		363
229	if (grp->fh2 && SvOK (grp->fh2))	364	if (grp->sv2 && SvOK (grp->sv2))
230	{	365	{
231	dSP;	366	dSP;
232		367
233	ENTER;	368	ENTER;
234	SAVETMPS;	369	SAVETMPS;
235	PUSHMARK (SP);	370	PUSHMARK (SP);
236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	371	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
237	PUTBACK;	372	PUTBACK;
238	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	373	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
239	SPAGAIN;	374	SPAGAIN;
240	FREETMPS;	375	FREETMPS;
241	LEAVE;	376	LEAVE;
242	}	377	}
243		378
244	/* stop if no progress has been made */	379	/* stop if no progress has been made */
245	if (old_len == grp->length)	380	if (old_len == grp->size)
246	{	381	{
247	SvREFCNT_dec (grp->fh2);	382	SvREFCNT_dec (grp->sv2);
248	grp->fh2 = 0;	383	grp->sv2 = 0;
249	break;	384	break;
250	}	385	}
251	}	386	}
		387
		388	unblock_sig ();
252	}	389	}
253		390
254	static void aio_grp_dec (aio_req grp)	391	static void aio_grp_dec (aio_req grp)
255	{	392	{
256	--grp->length;	393	--grp->size;
257		394
258	/* call feeder, if applicable */	395	/* call feeder, if applicable */
259	aio_grp_feed (grp);	396	aio_grp_feed (grp);
260		397
261	/* finish, if done */	398	/* finish, if done */
262	if (!grp->length && grp->fd)	399	if (!grp->size && grp->int1)
263	{	400	{
		401	block_sig ();
		402
264	req_invoke (grp);	403	if (!req_invoke (grp))
		404	{
		405	req_destroy (grp);
		406	unblock_sig ();
		407	croak (0);
		408	}
		409
265	req_free (grp);	410	req_destroy (grp);
		411	unblock_sig ();
266	}	412	}
267	}	413	}
268		414
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)	415	static int req_invoke (aio_req req)
295	{	416	{
296	dSP;	417	dSP;
		418
		419	if (req->flags & FLAG_SV2_RO_OFF)
		420	SvREADONLY_off (req->sv2);
297		421
298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	422	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
299	{	423	{
300	errno = req->errorno;
301
302	ENTER;	424	ENTER;
303	SAVETMPS;	425	SAVETMPS;
304	PUSHMARK (SP);	426	PUSHMARK (SP);
305	EXTEND (SP, 1);	427	EXTEND (SP, 1);
306		428
…		…
310	{	432	{
311	SV *rv = &PL_sv_undef;	433	SV *rv = &PL_sv_undef;
312		434
313	if (req->result >= 0)	435	if (req->result >= 0)
314	{	436	{
		437	int i;
315	char *buf = req->data2ptr;	438	char *buf = req->ptr2;
316	AV *av = newAV ();	439	AV *av = newAV ();
317		440
318	while (req->result)	441	av_extend (av, req->result - 1);
		442
		443	for (i = 0; i < req->result; ++i)
319	{	444	{
320	SV *sv = newSVpv (buf, 0);	445	SV *sv = newSVpv (buf, 0);
321		446
322	av_push (av, sv);	447	av_store (av, i, sv);
323	buf += SvCUR (sv) + 1;	448	buf += SvCUR (sv) + 1;
324	req->result--;
325	}	449	}
326		450
327	rv = sv_2mortal (newRV_noinc ((SV *)av));	451	rv = sv_2mortal (newRV_noinc ((SV *)av));
328	}	452	}
329		453
…		…
339	PUSHs (sv_2mortal (newSViv (req->result)));	463	PUSHs (sv_2mortal (newSViv (req->result)));
340	PUTBACK;	464	PUTBACK;
341	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	465	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
342	SPAGAIN;	466	SPAGAIN;
343		467
344	fh = SvREFCNT_inc (POPs);	468	fh = POPs;
345
346	PUSHMARK (SP);	469	PUSHMARK (SP);
347	XPUSHs (sv_2mortal (fh));	470	XPUSHs (fh);
348	}	471	}
349	break;	472	break;
350		473
351	case REQ_GROUP:	474	case REQ_GROUP:
352	req->fd = 2; /* mark group as finished */	475	req->int1 = 2; /* mark group as finished */
353		476
354	if (req->data)	477	if (req->sv1)
355	{	478	{
356	int i;	479	int i;
357	AV *av = (AV *)req->data;	480	AV *av = (AV *)req->sv1;
358		481
359	EXTEND (SP, AvFILL (av) + 1);	482	EXTEND (SP, AvFILL (av) + 1);
360	for (i = 0; i <= AvFILL (av); ++i)	483	for (i = 0; i <= AvFILL (av); ++i)
361	PUSHs (*av_fetch (av, i, 0));	484	PUSHs (*av_fetch (av, i, 0));
362	}	485	}
363	break;	486	break;
364		487
365	case REQ_NOP:	488	case REQ_NOP:
366	case REQ_SLEEP:	489	case REQ_BUSY:
		490	break;
		491
		492	case REQ_READLINK:
		493	if (req->result > 0)
		494	{
		495	SvCUR_set (req->sv2, req->result);
		496	*SvEND (req->sv2) = 0;
		497	PUSHs (req->sv2);
		498	}
		499	break;
		500
		501	case REQ_STAT:
		502	case REQ_LSTAT:
		503	case REQ_FSTAT:
		504	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		505	PL_laststatval = req->result;
		506	PL_statcache = *(Stat_t *)(req->ptr2);
		507	PUSHs (sv_2mortal (newSViv (req->result)));
		508	break;
		509
		510	case REQ_READ:
		511	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		512	*SvEND (req->sv2) = 0;
		513	PUSHs (sv_2mortal (newSViv (req->result)));
367	break;	514	break;
368		515
369	default:	516	default:
370	PUSHs (sv_2mortal (newSViv (req->result)));	517	PUSHs (sv_2mortal (newSViv (req->result)));
371	break;	518	break;
372	}	519	}
373		520
		521	errno = req->errorno;
374		522
375	PUTBACK;	523	PUTBACK;
376	call_sv (req->callback, G_VOID | G_EVAL);	524	call_sv (req->callback, G_VOID | G_EVAL);
377	SPAGAIN;	525	SPAGAIN;
378		526
…		…
392	grp->grp_first = req->grp_next;	540	grp->grp_first = req->grp_next;
393		541
394	aio_grp_dec (grp);	542	aio_grp_dec (grp);
395	}	543	}
396		544
397	if (SvTRUE (ERRSV))	545	return !SvTRUE (ERRSV);
398	{
399	req_free (req);
400	croak (0);
401	}
402	}	546	}
403		547
404	static void req_free (aio_req req)	548	static void req_destroy (aio_req req)
405	{	549	{
406	if (req->self)	550	if (req->self)
407	{	551	{
408	sv_unmagic (req->self, PERL_MAGIC_ext);	552	sv_unmagic (req->self, PERL_MAGIC_ext);
409	SvREFCNT_dec (req->self);	553	SvREFCNT_dec (req->self);
410	}	554	}
411		555
412	SvREFCNT_dec (req->data);
413	SvREFCNT_dec (req->fh);	556	SvREFCNT_dec (req->sv1);
414	SvREFCNT_dec (req->fh2);	557	SvREFCNT_dec (req->sv2);
415	SvREFCNT_dec (req->callback);	558	SvREFCNT_dec (req->callback);
416	Safefree (req->statdata);
417		559
418	if (req->type == REQ_READDIR && req->result >= 0)	560	if (req->flags & FLAG_PTR2_FREE)
419	free (req->data2ptr);	561	free (req->ptr2);
420		562
421	Safefree (req);	563	Safefree (req);
422	}	564	}
423		565
		566	static void req_cancel_subs (aio_req grp)
		567	{
		568	aio_req sub;
		569
		570	if (grp->type != REQ_GROUP)
		571	return;
		572
		573	SvREFCNT_dec (grp->sv2);
		574	grp->sv2 = 0;
		575
		576	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		577	req_cancel (sub);
		578	}
		579
424	static void req_cancel (aio_req req)	580	static void req_cancel (aio_req req)
425	{	581	{
426	req->flags |= FLAG_CANCELLED;	582	req->flags |= FLAG_CANCELLED;
427		583
428	if (req->type == REQ_GROUP)	584	req_cancel_subs (req);
		585	}
		586
		587	static void *aio_proc (void *arg);
		588
		589	static void start_thread (void)
		590	{
		591	worker *wrk = calloc (1, sizeof (worker));
		592
		593	if (!wrk)
		594	croak ("unable to allocate worker thread data");
		595
		596	LOCK (wrklock);
		597
		598	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
429	{	599	{
430	aio_req sub;	600	wrk->prev = &wrk_first;
		601	wrk->next = wrk_first.next;
		602	wrk_first.next->prev = wrk;
		603	wrk_first.next = wrk;
		604	++started;
		605	}
		606	else
		607	free (wrk);
431		608
432	for (sub = req->grp_first; sub; sub = sub->grp_next)	609	UNLOCK (wrklock);
433	req_cancel (sub);	610	}
		611
		612	static void maybe_start_thread ()
		613	{
		614	if (get_nthreads () >= wanted)
		615	return;
		616
		617	/* todo: maybe use idle here, but might be less exact */
		618	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		619	return;
		620
		621	start_thread ();
		622	}
		623
		624	static void req_send (aio_req req)
		625	{
		626	block_sig ();
		627
		628	++nreqs;
		629
		630	LOCK (reqlock);
		631	++nready;
		632	reqq_push (&req_queue, req);
		633	COND_SIGNAL (reqwait);
		634	UNLOCK (reqlock);
		635
		636	unblock_sig ();
		637
		638	maybe_start_thread ();
		639	}
		640
		641	static void end_thread (void)
		642	{
		643	aio_req req;
		644
		645	Newz (0, req, 1, aio_cb);
		646
		647	req->type = REQ_QUIT;
		648	req->pri = PRI_MAX + PRI_BIAS;
		649
		650	LOCK (reqlock);
		651	reqq_push (&req_queue, req);
		652	COND_SIGNAL (reqwait);
		653	UNLOCK (reqlock);
		654
		655	LOCK (wrklock);
		656	--started;
		657	UNLOCK (wrklock);
		658	}
		659
		660	static void set_max_idle (int nthreads)
		661	{
		662	if (WORDACCESS_UNSAFE) LOCK (reqlock);
		663	max_idle = nthreads <= 0 ? 1 : nthreads;
		664	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);
		665	}
		666
		667	static void min_parallel (int nthreads)
		668	{
		669	if (wanted < nthreads)
		670	wanted = nthreads;
		671	}
		672
		673	static void max_parallel (int nthreads)
		674	{
		675	if (wanted > nthreads)
		676	wanted = nthreads;
		677
		678	while (started > wanted)
		679	end_thread ();
		680	}
		681
		682	static void poll_wait ()
		683	{
		684	fd_set rfd;
		685
		686	while (nreqs)
		687	{
		688	int size;
		689	if (WORDACCESS_UNSAFE) LOCK (reslock);
		690	size = res_queue.size;
		691	if (WORDACCESS_UNSAFE) UNLOCK (reslock);
		692
		693	if (size)
		694	return;
		695
		696	maybe_start_thread ();
		697
		698	FD_ZERO(&rfd);
		699	FD_SET(respipe [0], &rfd);
		700
		701	select (respipe [0] + 1, &rfd, 0, 0, 0);
434	}	702	}
435	}	703	}
436		704
437	static int poll_cb ()	705	static int poll_cb ()
438	{	706	{
439	dSP;	707	dSP;
440	int count = 0;	708	int count = 0;
		709	int maxreqs = max_poll_reqs;
441	int do_croak = 0;	710	int do_croak = 0;
		711	struct timeval tv_start, tv_now;
442	aio_req req;	712	aio_req req;
		713
		714	if (max_poll_time)
		715	gettimeofday (&tv_start, 0);
		716
		717	block_sig ();
443		718
444	for (;;)	719	for (;;)
445	{	720	{
446	pthread_mutex_lock (&reslock);	721	for (;;)
447	req = reqq_shift (&res_queue);
448
449	if (req)
450	{	722	{
		723	maybe_start_thread ();
		724
		725	LOCK (reslock);
		726	req = reqq_shift (&res_queue);
		727
451	if (!res_queue.size)	728	if (req)
452	{	729	{
		730	--npending;
		731
		732	if (!res_queue.size)
		733	{
453	/* read any signals sent by the worker threads */	734	/* read any signals sent by the worker threads */
454	char buf [32];	735	char buf [4];
455	while (read (respipe [0], buf, 32) == 32)	736	while (read (respipe [0], buf, 4) == 4)
		737	;
456	;	738	}
		739	}
		740
		741	UNLOCK (reslock);
		742
		743	if (!req)
		744	break;
		745
		746	--nreqs;
		747
		748	if (req->type == REQ_GROUP && req->size)
		749	{
		750	req->int1 = 1; /* mark request as delayed */
		751	continue;
		752	}
		753	else
		754	{
		755	if (!req_invoke (req))
		756	{
		757	req_destroy (req);
		758	unblock_sig ();
		759	croak (0);
		760	}
		761
		762	count++;
		763	}
		764
		765	req_destroy (req);
		766
		767	if (maxreqs && !--maxreqs)
		768	break;
		769
		770	if (max_poll_time)
		771	{
		772	gettimeofday (&tv_now, 0);
		773
		774	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		775	break;
457	}	776	}
458	}	777	}
459		778
460	pthread_mutex_unlock (&reslock);	779	if (nreqs <= max_outstanding)
461
462	if (!req)
463	break;	780	break;
464		781
465	--nreqs;	782	poll_wait ();
466		783
467	if (req->type == REQ_QUIT)	784	++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	}	785	}
496		786
		787	unblock_sig ();
497	return count;	788	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	}	789	}
582		790
583	static void create_pipe ()	791	static void create_pipe ()
584	{	792	{
585	if (pipe (respipe))	793	if (pipe (respipe))
…		…
602	/*	810	/*
603	* make our pread/pwrite safe against themselves, but not against	811	* make our pread/pwrite safe against themselves, but not against
604	* normal read/write by using a mutex. slows down execution a lot,	812	* normal read/write by using a mutex. slows down execution a lot,
605	* but that's your problem, not mine.	813	* but that's your problem, not mine.
606	*/	814	*/
607	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	815	static mutex_t preadwritelock = MUTEX_INIT;
608		816
609	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	817	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
610	{	818	{
611	ssize_t res;	819	ssize_t res;
612	off_t ooffset;	820	off_t ooffset;
613		821
614	pthread_mutex_lock (&preadwritelock);	822	LOCK (preadwritelock);
615	ooffset = lseek (fd, 0, SEEK_CUR);	823	ooffset = lseek (fd, 0, SEEK_CUR);
616	lseek (fd, offset, SEEK_SET);	824	lseek (fd, offset, SEEK_SET);
617	res = read (fd, buf, count);	825	res = read (fd, buf, count);
618	lseek (fd, ooffset, SEEK_SET);	826	lseek (fd, ooffset, SEEK_SET);
619	pthread_mutex_unlock (&preadwritelock);	827	UNLOCK (preadwritelock);
620		828
621	return res;	829	return res;
622	}	830	}
623		831
624	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	832	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
625	{	833	{
626	ssize_t res;	834	ssize_t res;
627	off_t ooffset;	835	off_t ooffset;
628		836
629	pthread_mutex_lock (&preadwritelock);	837	LOCK (preadwritelock);
630	ooffset = lseek (fd, 0, SEEK_CUR);	838	ooffset = lseek (fd, 0, SEEK_CUR);
631	lseek (fd, offset, SEEK_SET);	839	lseek (fd, offset, SEEK_SET);
632	res = write (fd, buf, count);	840	res = write (fd, buf, count);
633	lseek (fd, offset, SEEK_SET);	841	lseek (fd, offset, SEEK_SET);
634	pthread_mutex_unlock (&preadwritelock);	842	UNLOCK (preadwritelock);
635		843
636	return res;	844	return res;
637	}	845	}
		846	#endif
		847
		848	#ifndef HAVE_FUTIMES
		849
		850	# define utimes(path,times) aio_utimes (path, times)
		851	# define futimes(fd,times) aio_futimes (fd, times)
		852
		853	int aio_utimes (const char *filename, const struct timeval times[2])
		854	{
		855	if (times)
		856	{
		857	struct utimbuf buf;
		858
		859	buf.actime = times[0].tv_sec;
		860	buf.modtime = times[1].tv_sec;
		861
		862	return utime (filename, &buf);
		863	}
		864	else
		865	return utime (filename, 0);
		866	}
		867
		868	int aio_futimes (int fd, const struct timeval tv[2])
		869	{
		870	errno = ENOSYS;
		871	return -1;
		872	}
		873
638	#endif	874	#endif
639		875
640	#if !HAVE_FDATASYNC	876	#if !HAVE_FDATASYNC
641	# define fdatasync fsync	877	# define fdatasync fsync
642	#endif	878	#endif
643		879
644	#if !HAVE_READAHEAD	880	#if !HAVE_READAHEAD
645	# define readahead aio_readahead	881	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
646		882
647	static ssize_t readahead (int fd, off_t offset, size_t count)	883	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
648	{	884	{
649	dBUF;	885	dBUF;
650		886
651	while (count > 0)	887	while (count > 0)
652	{	888	{
…		…
655	pread (fd, aio_buf, len, offset);	891	pread (fd, aio_buf, len, offset);
656	offset += len;	892	offset += len;
657	count -= len;	893	count -= len;
658	}	894	}
659		895
660	fBUF;
661
662	errno = 0;	896	errno = 0;
663	}	897	}
		898
664	#endif	899	#endif
665		900
666	#if !HAVE_READDIR_R	901	#if !HAVE_READDIR_R
667	# define readdir_r aio_readdir_r	902	# define readdir_r aio_readdir_r
668		903
669	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	904	static mutex_t readdirlock = MUTEX_INIT;
670		905
671	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	906	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
672	{	907	{
673	struct dirent *e;	908	struct dirent *e;
674	int errorno;	909	int errorno;
675		910
676	pthread_mutex_lock (&readdirlock);	911	LOCK (readdirlock);
677		912
678	e = readdir (dirp);	913	e = readdir (dirp);
679	errorno = errno;	914	errorno = errno;
680		915
681	if (e)	916	if (e)
…		…
684	strcpy (ent->d_name, e->d_name);	919	strcpy (ent->d_name, e->d_name);
685	}	920	}
686	else	921	else
687	*res = 0;	922	*res = 0;
688		923
689	pthread_mutex_unlock (&readdirlock);	924	UNLOCK (readdirlock);
690		925
691	errno = errorno;	926	errno = errorno;
692	return e ? 0 : -1;	927	return e ? 0 : -1;
693	}	928	}
694	#endif	929	#endif
695		930
696	/* sendfile always needs emulation */	931	/* sendfile always needs emulation */
697	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	932	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
698	{	933	{
699	ssize_t res;	934	ssize_t res;
700		935
701	if (!count)	936	if (!count)
702	return 0;	937	return 0;
…		…
713	{	948	{
714	off_t sbytes;	949	off_t sbytes;
715	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	950	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
716		951
717	if (res < 0 && sbytes)	952	if (res < 0 && sbytes)
718	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	953	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
719	res = sbytes;	954	res = sbytes;
720	}	955	}
721		956
722	# elif __hpux	957	# elif __hpux
723	res = sendfile (ofd, ifd, offset, count, 0, 0);	958	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
779		1014
780	offset += cnt;	1015	offset += cnt;
781	res += cnt;	1016	res += cnt;
782	count -= cnt;	1017	count -= cnt;
783	}	1018	}
784
785	fBUF;
786	}	1019	}
787		1020
788	return res;	1021	return res;
789	}	1022	}
790		1023
791	/* read a full directory */	1024	/* read a full directory */
792	static int scandir_ (const char *path, void **namesp)	1025	static void scandir_ (aio_req req, worker *self)
793	{	1026	{
794	DIR *dirp;	1027	DIR *dirp;
795	union	1028	union
796	{	1029	{
797	struct dirent d;	1030	struct dirent d;
…		…
802	int memlen = 4096;	1035	int memlen = 4096;
803	int memofs = 0;	1036	int memofs = 0;
804	int res = 0;	1037	int res = 0;
805	int errorno;	1038	int errorno;
806		1039
807	dirp = opendir (path);	1040	LOCK (wrklock);
808	if (!dirp)	1041	self->dirp = dirp = opendir (req->ptr1);
809	return -1;
810
811	u = malloc (sizeof (*u));	1042	self->dbuf = u = malloc (sizeof (*u));
		1043	req->flags |= FLAG_PTR2_FREE;
812	names = malloc (memlen);	1044	req->ptr2 = names = malloc (memlen);
		1045	UNLOCK (wrklock);
813		1046
814	if (u && names)	1047	if (dirp && u && names)
815	for (;;)	1048	for (;;)
816	{	1049	{
817	errno = 0;	1050	errno = 0;
818	readdir_r (dirp, &u->d, &entp);	1051	readdir_r (dirp, &u->d, &entp);
819		1052
…		…
829	res++;	1062	res++;
830		1063
831	while (memofs + len > memlen)	1064	while (memofs + len > memlen)
832	{	1065	{
833	memlen *= 2;	1066	memlen *= 2;
		1067	LOCK (wrklock);
834	names = realloc (names, memlen);	1068	req->ptr2 = names = realloc (names, memlen);
		1069	UNLOCK (wrklock);
		1070
835	if (!names)	1071	if (!names)
836	break;	1072	break;
837	}	1073	}
838		1074
839	memcpy (names + memofs, name, len);	1075	memcpy (names + memofs, name, len);
840	memofs += len;	1076	memofs += len;
841	}	1077	}
842	}	1078	}
843		1079
844	errorno = errno;
845	free (u);
846	closedir (dirp);
847
848	if (errorno)	1080	if (errno)
		1081	res = -1;
		1082
		1083	req->result = res;
		1084	}
		1085
		1086	/*****************************************************************************/
		1087
		1088	static void *aio_proc (void *thr_arg)
		1089	{
		1090	aio_req req;
		1091	struct timespec ts;
		1092	worker *self = (worker *)thr_arg;
		1093
		1094	/* try to distribute timeouts somewhat evenly */
		1095	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		1096	* (1000000000UL / 1024UL);
		1097
		1098	for (;;)
849	{	1099	{
850	free (names);	1100	ts.tv_sec = time (0) + IDLE_TIMEOUT;
851	errno = errorno;
852	res = -1;
853	}
854		1101
855	*namesp = (void *)names;	1102	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		1103
870	for (;;)	1104	for (;;)
871	{	1105	{
872	req = reqq_shift (&req_queue);	1106	self->req = req = reqq_shift (&req_queue);
873		1107
874	if (req)	1108	if (req)
875	break;	1109	break;
876		1110
877	pthread_cond_wait (&reqwait, &reqlock);	1111	++idle;
		1112
		1113	if (COND_TIMEDWAIT (reqwait, reqlock, ts)
		1114	== ETIMEDOUT)
		1115	{
		1116	if (idle > max_idle)
		1117	{
		1118	--idle;
		1119	UNLOCK (reqlock);
		1120	LOCK (wrklock);
		1121	--started;
		1122	UNLOCK (wrklock);
		1123	goto quit;
		1124	}
		1125
		1126	/* we are allowed to idle, so do so without any timeout */
		1127	COND_WAIT (reqwait, reqlock);
		1128	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1129	}
		1130
		1131	--idle;
878	}	1132	}
879		1133
880	pthread_mutex_unlock (&reqlock);	1134	--nready;
		1135
		1136	UNLOCK (reqlock);
881		1137
882	errno = 0; /* strictly unnecessary */	1138	errno = 0; /* strictly unnecessary */
883	type = req->type; /* remember type for QUIT check */
884		1139
885	if (!(req->flags & FLAG_CANCELLED))	1140	if (!(req->flags & FLAG_CANCELLED))
886	switch (type)	1141	switch (req->type)
887	{	1142	{
888	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1143	case REQ_READ: req->result = req->offs >= 0
889	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1144	? pread (req->int1, req->ptr1, req->size, req->offs)
		1145	: read (req->int1, req->ptr1, req->size); break;
		1146	case REQ_WRITE: req->result = req->offs >= 0
		1147	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1148	: write (req->int1, req->ptr1, req->size); break;
890		1149
891	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1150	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
892	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1151	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
893		1152
894	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1153	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
895	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1154	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
896	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1155	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
897		1156
		1157	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1158	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1159	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1160	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1161
898	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1162	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
899	case REQ_CLOSE: req->result = close (req->fd); break;	1163	case REQ_CLOSE: req->result = close (req->int1); break;
900	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1164	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
901	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1165	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1166	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
902	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1167	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
903	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1168	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
904	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1169	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1170	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1171	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
905		1172
906	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1173	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
907	case REQ_FSYNC: req->result = fsync (req->fd); break;	1174	case REQ_FSYNC: req->result = fsync (req->int1); break;
908	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1175	case REQ_READDIR: scandir_ (req, self); break;
909		1176
910	case REQ_SLEEP:	1177	case REQ_BUSY:
911	{	1178	{
912	struct timeval tv;	1179	struct timeval tv;
913		1180
914	tv.tv_sec = req->fd;	1181	tv.tv_sec = req->nv1;
915	tv.tv_usec = req->fd2;	1182	tv.tv_usec = (req->nv1 - tv.tv_usec) * 1000000.;
916		1183
917	req->result = select (0, 0, 0, 0, &tv);	1184	req->result = select (0, 0, 0, 0, &tv);
918	}	1185	}
919		1186
		1187	case REQ_UTIME:
		1188	case REQ_FUTIME:
		1189	{
		1190	struct timeval tv[2];
		1191	struct timeval *times;
		1192
		1193	if (req->nv1 != -1. || req->nv2 != -1.)
		1194	{
		1195	tv[0].tv_sec = req->nv1;
		1196	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1197	tv[1].tv_sec = req->nv2;
		1198	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1199
		1200	times = tv;
		1201	}
		1202	else
		1203	times = 0;
		1204
		1205
		1206	req->result = req->type == REQ_FUTIME
		1207	? futimes (req->int1, times)
		1208	: utimes (req->ptr1, times);
		1209	}
		1210
920	case REQ_GROUP:	1211	case REQ_GROUP:
921	case REQ_NOP:	1212	case REQ_NOP:
		1213	break;
		1214
922	case REQ_QUIT:	1215	case REQ_QUIT:
923	break;	1216	goto quit;
924		1217
925	default:	1218	default:
926	req->result = ENOSYS;	1219	req->result = -1;
927	break;	1220	break;
928	}	1221	}
929		1222
930	req->errorno = errno;	1223	req->errorno = errno;
931		1224
932	pthread_mutex_lock (&reslock);	1225	LOCK (reslock);
		1226
		1227	++npending;
933		1228
934	if (!reqq_push (&res_queue, req))	1229	if (!reqq_push (&res_queue, req))
		1230	{
935	/* write a dummy byte to the pipe so fh becomes ready */	1231	/* write a dummy byte to the pipe so fh becomes ready */
936	write (respipe [1], &respipe, 1);	1232	write (respipe [1], &respipe, 1);
937		1233
938	pthread_mutex_unlock (&reslock);	1234	/* optionally signal the main thread asynchronously */
		1235	if (main_sig)
		1236	pthread_kill (main_tid, main_sig);
		1237	}
		1238
		1239	self->req = 0;
		1240	worker_clear (self);
		1241
		1242	UNLOCK (reslock);
939	}	1243	}
940	while (type != REQ_QUIT);	1244
		1245	quit:
		1246	LOCK (wrklock);
		1247	worker_free (self);
		1248	UNLOCK (wrklock);
941		1249
942	return 0;	1250	return 0;
943	}	1251	}
944		1252
945	/*****************************************************************************/	1253	/*****************************************************************************/
946		1254
947	static void atfork_prepare (void)	1255	static void atfork_prepare (void)
948	{	1256	{
949	pthread_mutex_lock (&reqlock);	1257	LOCK (wrklock);
950	pthread_mutex_lock (&reslock);	1258	LOCK (reqlock);
		1259	LOCK (reslock);
951	#if !HAVE_PREADWRITE	1260	#if !HAVE_PREADWRITE
952	pthread_mutex_lock (&preadwritelock);	1261	LOCK (preadwritelock);
953	#endif	1262	#endif
954	#if !HAVE_READDIR_R	1263	#if !HAVE_READDIR_R
955	pthread_mutex_lock (&readdirlock);	1264	LOCK (readdirlock);
956	#endif	1265	#endif
957	}	1266	}
958		1267
959	static void atfork_parent (void)	1268	static void atfork_parent (void)
960	{	1269	{
961	#if !HAVE_READDIR_R	1270	#if !HAVE_READDIR_R
962	pthread_mutex_unlock (&readdirlock);	1271	UNLOCK (readdirlock);
963	#endif	1272	#endif
964	#if !HAVE_PREADWRITE	1273	#if !HAVE_PREADWRITE
965	pthread_mutex_unlock (&preadwritelock);	1274	UNLOCK (preadwritelock);
966	#endif	1275	#endif
967	pthread_mutex_unlock (&reslock);	1276	UNLOCK (reslock);
968	pthread_mutex_unlock (&reqlock);	1277	UNLOCK (reqlock);
		1278	UNLOCK (wrklock);
969	}	1279	}
970		1280
971	static void atfork_child (void)	1281	static void atfork_child (void)
972	{	1282	{
973	aio_req prv;	1283	aio_req prv;
974		1284
975	started = 0;
976
977	while (prv = reqq_shift (&req_queue))	1285	while (prv = reqq_shift (&req_queue))
978	req_free (prv);	1286	req_destroy (prv);
979		1287
980	while (prv = reqq_shift (&res_queue))	1288	while (prv = reqq_shift (&res_queue))
981	req_free (prv);	1289	req_destroy (prv);
982		1290
		1291	while (wrk_first.next != &wrk_first)
		1292	{
		1293	worker *wrk = wrk_first.next;
		1294
		1295	if (wrk->req)
		1296	req_destroy (wrk->req);
		1297
		1298	worker_clear (wrk);
		1299	worker_free (wrk);
		1300	}
		1301
		1302	started = 0;
		1303	idle = 0;
		1304	nreqs = 0;
		1305	nready = 0;
		1306	npending = 0;
		1307
983	close (respipe [0]);	1308	close (respipe [0]);
984	close (respipe [1]);	1309	close (respipe [1]);
985	create_pipe ();	1310	create_pipe ();
986		1311
987	atfork_parent ();	1312	atfork_parent ();
…		…
1013	PROTOTYPES: ENABLE	1338	PROTOTYPES: ENABLE
1014		1339
1015	BOOT:	1340	BOOT:
1016	{	1341	{
1017	HV *stash = gv_stashpv ("IO::AIO", 1);	1342	HV *stash = gv_stashpv ("IO::AIO", 1);
		1343
1018	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1344	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1019	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1345	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1020	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1346	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1347	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1348	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1349	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1350	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1021		1351
1022	create_pipe ();	1352	create_pipe ();
1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1353	ATFORK (atfork_prepare, atfork_parent, atfork_child);
1024	}	1354	}
1025		1355
1026	void	1356	void
1027	min_parallel (nthreads)	1357	max_poll_reqs (int nreqs)
1028	int nthreads
1029	PROTOTYPE: $	1358	PROTOTYPE: $
		1359	CODE:
		1360	max_poll_reqs = nreqs;
1030		1361
1031	void	1362	void
1032	max_parallel (nthreads)	1363	max_poll_time (double nseconds)
1033	int nthreads
1034	PROTOTYPE: $	1364	PROTOTYPE: $
		1365	CODE:
		1366	max_poll_time = nseconds * AIO_TICKS;
		1367
		1368	void
		1369	min_parallel (int nthreads)
		1370	PROTOTYPE: $
		1371
		1372	void
		1373	max_parallel (int nthreads)
		1374	PROTOTYPE: $
		1375
		1376	void
		1377	max_idle (int nthreads)
		1378	PROTOTYPE: $
		1379	CODE:
		1380	set_max_idle (nthreads);
1035		1381
1036	int	1382	int
1037	max_outstanding (nreqs)	1383	max_outstanding (int maxreqs)
1038	int nreqs	1384	PROTOTYPE: $
1039	PROTOTYPE: $
1040	CODE:	1385	CODE:
1041	RETVAL = max_outstanding;	1386	RETVAL = max_outstanding;
1042	max_outstanding = nreqs;	1387	max_outstanding = maxreqs;
		1388	OUTPUT:
		1389	RETVAL
1043		1390
1044	void	1391	void
1045	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1392	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: $$$;$	1393	PROTOTYPE: $$$;$
1051	PPCODE:	1394	PPCODE:
1052	{	1395	{
1053	dREQ;	1396	dREQ;
1054		1397
1055	req->type = REQ_OPEN;	1398	req->type = REQ_OPEN;
1056	req->data = newSVsv (pathname);	1399	req->sv1 = newSVsv (pathname);
1057	req->dataptr = SvPVbyte_nolen (req->data);	1400	req->ptr1 = SvPVbyte_nolen (req->sv1);
1058	req->fd = flags;	1401	req->int1 = flags;
1059	req->mode = mode;	1402	req->mode = mode;
1060		1403
1061	REQ_SEND;	1404	REQ_SEND;
1062	}	1405	}
1063		1406
1064	void	1407	void
1065	aio_close (fh,callback=&PL_sv_undef)	1408	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1066	SV * fh
1067	SV * callback
1068	PROTOTYPE: $;$	1409	PROTOTYPE: $;$
1069	ALIAS:	1410	ALIAS:
1070	aio_close = REQ_CLOSE	1411	aio_close = REQ_CLOSE
1071	aio_fsync = REQ_FSYNC	1412	aio_fsync = REQ_FSYNC
1072	aio_fdatasync = REQ_FDATASYNC	1413	aio_fdatasync = REQ_FDATASYNC
1073	PPCODE:	1414	PPCODE:
1074	{	1415	{
1075	dREQ;	1416	dREQ;
1076		1417
1077	req->type = ix;	1418	req->type = ix;
1078	req->fh = newSVsv (fh);	1419	req->sv1 = newSVsv (fh);
1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1420	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1080		1421
1081	REQ_SEND (req);	1422	REQ_SEND (req);
1082	}	1423	}
1083		1424
1084	void	1425	void
1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1426	aio_read (SV *fh, SV *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:	1427	ALIAS:
1093	aio_read = REQ_READ	1428	aio_read = REQ_READ
1094	aio_write = REQ_WRITE	1429	aio_write = REQ_WRITE
1095	PROTOTYPE: $$$$$;$	1430	PROTOTYPE: $$$$$;$
1096	PPCODE:	1431	PPCODE:
1097	{	1432	{
1098	aio_req req;
1099	STRLEN svlen;	1433	STRLEN svlen;
1100	char *svptr = SvPVbyte (data, svlen);	1434	char *svptr = SvPVbyte (data, svlen);
1101		1435
1102	SvUPGRADE (data, SVt_PV);	1436	SvUPGRADE (data, SVt_PV);
1103	SvPOK_on (data);	1437	SvPOK_on (data);
…		…
1115	length = svlen - dataoffset;	1449	length = svlen - dataoffset;
1116	}	1450	}
1117	else	1451	else
1118	{	1452	{
1119	/* read: grow scalar as necessary */	1453	/* read: grow scalar as necessary */
1120	svptr = SvGROW (data, length + dataoffset);	1454	svptr = SvGROW (data, length + dataoffset + 1);
1121	}	1455	}
1122		1456
1123	if (length < 0)	1457	if (length < 0)
1124	croak ("length must not be negative");	1458	croak ("length must not be negative");
1125		1459
1126	{	1460	{
1127	dREQ;	1461	dREQ;
1128		1462
1129	req->type = ix;	1463	req->type = ix;
1130	req->fh = newSVsv (fh);	1464	req->sv1 = newSVsv (fh);
1131	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1465	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1132	: IoOFP (sv_2io (fh)));	1466	: IoOFP (sv_2io (fh)));
1133	req->offset = offset;	1467	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1134	req->length = length;	1468	req->size = length;
1135	req->data = SvREFCNT_inc (data);	1469	req->sv2 = SvREFCNT_inc (data);
1136	req->dataptr = (char *)svptr + dataoffset;	1470	req->ptr1 = (char *)svptr + dataoffset;
		1471	req->stroffset = dataoffset;
1137		1472
1138	if (!SvREADONLY (data))	1473	if (!SvREADONLY (data))
1139	{	1474	{
1140	SvREADONLY_on (data);	1475	SvREADONLY_on (data);
1141	req->data2ptr = (void *)data;	1476	req->flags |= FLAG_SV2_RO_OFF;
1142	}	1477	}
1143		1478
1144	REQ_SEND;	1479	REQ_SEND;
1145	}	1480	}
1146	}	1481	}
1147		1482
1148	void	1483	void
		1484	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1485	PROTOTYPE: $$;$
		1486	PPCODE:
		1487	{
		1488	SV *data;
		1489	dREQ;
		1490
		1491	data = newSV (NAME_MAX);
		1492	SvPOK_on (data);
		1493
		1494	req->type = REQ_READLINK;
		1495	req->sv1 = newSVsv (path);
		1496	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1497	req->sv2 = data;
		1498	req->ptr1 = SvPVbyte_nolen (data);
		1499
		1500	REQ_SEND;
		1501	}
		1502
		1503	void
1149	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1504	aio_sendfile (SV *out_fh, SV *in_fh, SV *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: $$$$;$	1505	PROTOTYPE: $$$$;$
1156	PPCODE:	1506	PPCODE:
1157	{	1507	{
1158	dREQ;	1508	dREQ;
1159		1509
1160	req->type = REQ_SENDFILE;	1510	req->type = REQ_SENDFILE;
1161	req->fh = newSVsv (out_fh);	1511	req->sv1 = newSVsv (out_fh);
1162	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1512	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1163	req->fh2 = newSVsv (in_fh);	1513	req->sv2 = newSVsv (in_fh);
1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1514	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1165	req->offset = in_offset;	1515	req->offs = SvVAL64 (in_offset);
1166	req->length = length;	1516	req->size = length;
1167		1517
1168	REQ_SEND;	1518	REQ_SEND;
1169	}	1519	}
1170		1520
1171	void	1521	void
1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1522	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1173	SV * fh
1174	UV offset
1175	IV length
1176	SV * callback
1177	PROTOTYPE: $$$;$	1523	PROTOTYPE: $$$;$
1178	PPCODE:	1524	PPCODE:
1179	{	1525	{
1180	dREQ;	1526	dREQ;
1181		1527
1182	req->type = REQ_READAHEAD;	1528	req->type = REQ_READAHEAD;
1183	req->fh = newSVsv (fh);	1529	req->sv1 = newSVsv (fh);
1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1530	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1185	req->offset = offset;	1531	req->offs = SvVAL64 (offset);
1186	req->length = length;	1532	req->size = length;
1187		1533
1188	REQ_SEND;	1534	REQ_SEND;
1189	}	1535	}
1190		1536
1191	void	1537	void
1192	aio_stat (fh_or_path,callback=&PL_sv_undef)	1538	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1193	SV * fh_or_path
1194	SV * callback
1195	ALIAS:	1539	ALIAS:
1196	aio_stat = REQ_STAT	1540	aio_stat = REQ_STAT
1197	aio_lstat = REQ_LSTAT	1541	aio_lstat = REQ_LSTAT
1198	PPCODE:	1542	PPCODE:
1199	{	1543	{
1200	dREQ;	1544	dREQ;
1201		1545
1202	New (0, req->statdata, 1, Stat_t);	1546	req->ptr2 = malloc (sizeof (Stat_t));
1203	if (!req->statdata)	1547	if (!req->ptr2)
1204	{	1548	{
1205	req_free (req);	1549	req_destroy (req);
1206	croak ("out of memory during aio_req->statdata allocation");	1550	croak ("out of memory during aio_stat statdata allocation");
1207	}	1551	}
		1552
		1553	req->flags |= FLAG_PTR2_FREE;
		1554	req->sv1 = newSVsv (fh_or_path);
1208		1555
1209	if (SvPOK (fh_or_path))	1556	if (SvPOK (fh_or_path))
1210	{	1557	{
1211	req->type = ix;	1558	req->type = ix;
1212	req->data = newSVsv (fh_or_path);
1213	req->dataptr = SvPVbyte_nolen (req->data);	1559	req->ptr1 = SvPVbyte_nolen (req->sv1);
1214	}	1560	}
1215	else	1561	else
1216	{	1562	{
1217	req->type = REQ_FSTAT;	1563	req->type = REQ_FSTAT;
1218	req->fh = newSVsv (fh_or_path);
1219	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1564	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1220	}	1565	}
1221		1566
1222	REQ_SEND;	1567	REQ_SEND;
1223	}	1568	}
1224		1569
1225	void	1570	void
		1571	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1572	PPCODE:
		1573	{
		1574	dREQ;
		1575
		1576	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1577	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1578	req->sv1 = newSVsv (fh_or_path);
		1579
		1580	if (SvPOK (fh_or_path))
		1581	{
		1582	req->type = REQ_UTIME;
		1583	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1584	}
		1585	else
		1586	{
		1587	req->type = REQ_FUTIME;
		1588	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1589	}
		1590
		1591	REQ_SEND;
		1592	}
		1593
		1594	void
		1595	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1596	PPCODE:
		1597	{
		1598	dREQ;
		1599
		1600	req->mode = mode;
		1601	req->sv1 = newSVsv (fh_or_path);
		1602
		1603	if (SvPOK (fh_or_path))
		1604	{
		1605	req->type = REQ_CHMOD;
		1606	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1607	}
		1608	else
		1609	{
		1610	req->type = REQ_FCHMOD;
		1611	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1612	}
		1613
		1614	REQ_SEND;
		1615	}
		1616
		1617	void
		1618	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1619	PPCODE:
		1620	{
		1621	dREQ;
		1622
		1623	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1624	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1625	req->sv1 = newSVsv (fh_or_path);
		1626
		1627	if (SvPOK (fh_or_path))
		1628	{
		1629	req->type = REQ_CHOWN;
		1630	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1631	}
		1632	else
		1633	{
		1634	req->type = REQ_FCHOWN;
		1635	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1636	}
		1637
		1638	REQ_SEND;
		1639	}
		1640
		1641	void
1226	aio_unlink (pathname,callback=&PL_sv_undef)	1642	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1227	SV * pathname
1228	SV * callback
1229	ALIAS:	1643	ALIAS:
1230	aio_unlink = REQ_UNLINK	1644	aio_unlink = REQ_UNLINK
1231	aio_rmdir = REQ_RMDIR	1645	aio_rmdir = REQ_RMDIR
1232	aio_readdir = REQ_READDIR	1646	aio_readdir = REQ_READDIR
1233	PPCODE:	1647	PPCODE:
1234	{	1648	{
1235	dREQ;	1649	dREQ;
1236		1650
1237	req->type = ix;	1651	req->type = ix;
1238	req->data = newSVsv (pathname);	1652	req->sv1 = newSVsv (pathname);
1239	req->dataptr = SvPVbyte_nolen (req->data);	1653	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1654
		1655	REQ_SEND;
		1656	}
		1657
		1658	void
		1659	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1660	PPCODE:
		1661	{
		1662	dREQ;
1240		1663
		1664	req->type = REQ_MKDIR;
		1665	req->sv1 = newSVsv (pathname);
		1666	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1667	req->mode = mode;
		1668
1241	REQ_SEND;	1669	REQ_SEND;
1242	}	1670	}
1243		1671
1244	void	1672	void
1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1673	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1246	SV * oldpath
1247	SV * newpath
1248	SV * callback
1249	ALIAS:	1674	ALIAS:
1250	aio_link = REQ_LINK	1675	aio_link = REQ_LINK
1251	aio_symlink = REQ_SYMLINK	1676	aio_symlink = REQ_SYMLINK
1252	aio_rename = REQ_RENAME	1677	aio_rename = REQ_RENAME
1253	PPCODE:	1678	PPCODE:
1254	{	1679	{
1255	dREQ;	1680	dREQ;
1256		1681
1257	req->type = ix;	1682	req->type = ix;
1258	req->fh = newSVsv (oldpath);	1683	req->sv2 = newSVsv (oldpath);
1259	req->data2ptr = SvPVbyte_nolen (req->fh);	1684	req->ptr2 = SvPVbyte_nolen (req->sv2);
1260	req->data = newSVsv (newpath);	1685	req->sv1 = newSVsv (newpath);
1261	req->dataptr = SvPVbyte_nolen (req->data);	1686	req->ptr1 = SvPVbyte_nolen (req->sv1);
1262		1687
1263	REQ_SEND;	1688	REQ_SEND;
1264	}	1689	}
1265		1690
1266	void	1691	void
1267	aio_sleep (delay,callback=&PL_sv_undef)	1692	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1268	double delay
1269	SV * callback
1270	PPCODE:	1693	PPCODE:
1271	{	1694	{
1272	dREQ;	1695	dREQ;
1273		1696
1274	req->type = REQ_SLEEP;	1697	req->type = REQ_MKNOD;
1275	req->fd = delay < 0. ? 0 : delay;	1698	req->sv1 = newSVsv (pathname);
1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1699	req->ptr1 = SvPVbyte_nolen (req->sv1);
1277		1700	req->mode = (mode_t)mode;
		1701	req->offs = dev;
		1702
1278	REQ_SEND;	1703	REQ_SEND;
1279	}	1704	}
1280		1705
1281	void	1706	void
		1707	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1708	PPCODE:
		1709	{
		1710	dREQ;
		1711
		1712	req->type = REQ_BUSY;
		1713	req->nv1 = delay < 0. ? 0. : delay;
		1714
		1715	REQ_SEND;
		1716	}
		1717
		1718	void
1282	aio_group (callback=&PL_sv_undef)	1719	aio_group (SV *callback=&PL_sv_undef)
1283	SV * callback
1284	PROTOTYPE: ;$	1720	PROTOTYPE: ;$
1285	PPCODE:	1721	PPCODE:
1286	{	1722	{
1287	dREQ;	1723	dREQ;
1288		1724
1289	req->type = REQ_GROUP;	1725	req->type = REQ_GROUP;
		1726
1290	req_send (req);	1727	req_send (req);
1291
1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1728	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1293	}	1729	}
1294		1730
1295	void	1731	void
1296	aio_nop (callback=&PL_sv_undef)	1732	aio_nop (SV *callback=&PL_sv_undef)
1297	SV * callback
1298	PPCODE:	1733	PPCODE:
1299	{	1734	{
1300	dREQ;	1735	dREQ;
1301		1736
1302	req->type = REQ_NOP;	1737	req->type = REQ_NOP;
1303		1738
1304	REQ_SEND;	1739	REQ_SEND;
1305	}	1740	}
1306		1741
1307	void	1742	int
1308	aioreq_pri (int pri = DEFAULT_PRI)	1743	aioreq_pri (int pri = 0)
1309	CODE:	1744	PROTOTYPE: ;$
		1745	CODE:
		1746	RETVAL = next_pri - PRI_BIAS;
		1747	if (items > 0)
		1748	{
1310	if (pri < PRI_MIN) pri = PRI_MIN;	1749	if (pri < PRI_MIN) pri = PRI_MIN;
1311	if (pri > PRI_MAX) pri = PRI_MAX;	1750	if (pri > PRI_MAX) pri = PRI_MAX;
1312	next_pri = pri + PRI_BIAS;	1751	next_pri = pri + PRI_BIAS;
		1752	}
		1753	OUTPUT:
		1754	RETVAL
1313		1755
1314	void	1756	void
1315	aioreq_nice (int nice = 0)	1757	aioreq_nice (int nice = 0)
1316	CODE:	1758	CODE:
1317	nice = next_pri - nice;	1759	nice = next_pri - nice;
1318	if (nice < PRI_MIN) nice = PRI_MIN;	1760	if (nice < PRI_MIN) nice = PRI_MIN;
1319	if (nice > PRI_MAX) nice = PRI_MAX;	1761	if (nice > PRI_MAX) nice = PRI_MAX;
1320	next_pri = nice + PRI_BIAS;	1762	next_pri = nice + PRI_BIAS;
1321		1763
1322	void	1764	void
1323	flush ()	1765	flush ()
1324	PROTOTYPE:	1766	PROTOTYPE:
1325	CODE:	1767	CODE:
…		…
1327	{	1769	{
1328	poll_wait ();	1770	poll_wait ();
1329	poll_cb ();	1771	poll_cb ();
1330	}	1772	}
1331		1773
1332	void	1774	int
1333	poll()	1775	poll()
1334	PROTOTYPE:	1776	PROTOTYPE:
1335	CODE:	1777	CODE:
1336	if (nreqs)
1337	{
1338	poll_wait ();	1778	poll_wait ();
1339	poll_cb ();	1779	RETVAL = poll_cb ();
1340	}	1780	OUTPUT:
		1781	RETVAL
1341		1782
1342	int	1783	int
1343	poll_fileno()	1784	poll_fileno()
1344	PROTOTYPE:	1785	PROTOTYPE:
1345	CODE:	1786	CODE:
…		…
1357		1798
1358	void	1799	void
1359	poll_wait()	1800	poll_wait()
1360	PROTOTYPE:	1801	PROTOTYPE:
1361	CODE:	1802	CODE:
1362	if (nreqs)
1363	poll_wait ();	1803	poll_wait ();
		1804
		1805	void
		1806	setsig (int signum = SIGIO)
		1807	PROTOTYPE: ;$
		1808	CODE:
		1809	{
		1810	if (block_sig_level)
		1811	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1812
		1813	LOCK (reslock);
		1814	main_tid = pthread_self ();
		1815	main_sig = signum;
		1816	UNLOCK (reslock);
		1817
		1818	if (main_sig && npending)
		1819	pthread_kill (main_tid, main_sig);
		1820	}
		1821
		1822	void
		1823	aio_block (SV *cb)
		1824	PROTOTYPE: &
		1825	PPCODE:
		1826	{
		1827	int count;
		1828
		1829	block_sig ();
		1830	PUSHMARK (SP);
		1831	PUTBACK;
		1832	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1833	SPAGAIN;
		1834	unblock_sig ();
		1835
		1836	if (SvTRUE (ERRSV))
		1837	croak (0);
		1838
		1839	XSRETURN (count);
		1840	}
1364		1841
1365	int	1842	int
1366	nreqs()	1843	nreqs()
1367	PROTOTYPE:	1844	PROTOTYPE:
1368	CODE:	1845	CODE:
1369	RETVAL = nreqs;	1846	RETVAL = nreqs;
1370	OUTPUT:	1847	OUTPUT:
1371	RETVAL	1848	RETVAL
1372		1849
		1850	int
		1851	nready()
		1852	PROTOTYPE:
		1853	CODE:
		1854	RETVAL = get_nready ();
		1855	OUTPUT:
		1856	RETVAL
		1857
		1858	int
		1859	npending()
		1860	PROTOTYPE:
		1861	CODE:
		1862	RETVAL = get_npending ();
		1863	OUTPUT:
		1864	RETVAL
		1865
		1866	int
		1867	nthreads()
		1868	PROTOTYPE:
		1869	CODE:
		1870	if (WORDACCESS_UNSAFE) LOCK (wrklock);
		1871	RETVAL = started;
		1872	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);
		1873	OUTPUT:
		1874	RETVAL
		1875
1373	PROTOTYPES: DISABLE	1876	PROTOTYPES: DISABLE
1374		1877
1375	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1878	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1376		1879
1377	void	1880	void
…		…
1392	PPCODE:	1895	PPCODE:
1393	{	1896	{
1394	int i;	1897	int i;
1395	aio_req req;	1898	aio_req req;
1396		1899
		1900	if (main_sig && !block_sig_level)
		1901	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1902
1397	if (grp->fd == 2)	1903	if (grp->int1 == 2)
1398	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1904	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1399		1905
1400	for (i = 1; i < items; ++i )	1906	for (i = 1; i < items; ++i )
1401	{	1907	{
1402	if (GIMME_V != G_VOID)	1908	if (GIMME_V != G_VOID)
…		…
1404		1910
1405	req = SvAIO_REQ (ST (i));	1911	req = SvAIO_REQ (ST (i));
1406		1912
1407	if (req)	1913	if (req)
1408	{	1914	{
1409	++grp->length;	1915	++grp->size;
1410	req->grp = grp;	1916	req->grp = grp;
1411		1917
1412	req->grp_prev = 0;	1918	req->grp_prev = 0;
1413	req->grp_next = grp->grp_first;	1919	req->grp_next = grp->grp_first;
1414		1920
…		…
1419	}	1925	}
1420	}	1926	}
1421	}	1927	}
1422		1928
1423	void	1929	void
		1930	cancel_subs (aio_req_ornot req)
		1931	CODE:
		1932	req_cancel_subs (req);
		1933
		1934	void
1424	result (aio_req grp, ...)	1935	result (aio_req grp, ...)
1425	CODE:	1936	CODE:
1426	{	1937	{
1427	int i;	1938	int i;
		1939	AV *av;
		1940
		1941	grp->errorno = errno;
		1942
1428	AV *av = newAV ();	1943	av = newAV ();
1429		1944
1430	for (i = 1; i < items; ++i )	1945	for (i = 1; i < items; ++i )
1431	av_push (av, newSVsv (ST (i)));	1946	av_push (av, newSVsv (ST (i)));
1432		1947
1433	SvREFCNT_dec (grp->data);	1948	SvREFCNT_dec (grp->sv1);
1434	grp->data = (SV *)av;	1949	grp->sv1 = (SV *)av;
1435	}	1950	}
		1951
		1952	void
		1953	errno (aio_req grp, int errorno = errno)
		1954	CODE:
		1955	grp->errorno = errorno;
1436		1956
1437	void	1957	void
1438	limit (aio_req grp, int limit)	1958	limit (aio_req grp, int limit)
1439	CODE:	1959	CODE:
1440	grp->fd2 = limit;	1960	grp->int2 = limit;
1441	aio_grp_feed (grp);	1961	aio_grp_feed (grp);
1442		1962
1443	void	1963	void
1444	feed (aio_req grp, SV *callback=&PL_sv_undef)	1964	feed (aio_req grp, SV *callback=&PL_sv_undef)
1445	CODE:	1965	CODE:
1446	{	1966	{
1447	SvREFCNT_dec (grp->fh2);	1967	SvREFCNT_dec (grp->sv2);
1448	grp->fh2 = newSVsv (callback);	1968	grp->sv2 = newSVsv (callback);
1449		1969
1450	if (grp->fd2 <= 0)	1970	if (grp->int2 <= 0)
1451	grp->fd2 = 2;	1971	grp->int2 = 2;
1452		1972
1453	aio_grp_feed (grp);	1973	aio_grp_feed (grp);
1454	}	1974	}
1455		1975

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