ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.107 by root, Wed Oct 3 21:27:51 2007 UTC vs.
Revision 1.262 by root, Sun Aug 12 05:21:35 2018 UTC

1	#include "xthread.h"	1	#include "libeio/xthread.h"
2		2
3	#include <errno.h>	3	#include <errno.h>
4		4
5	#include "EXTERN.h"	5	#include "EXTERN.h"
6	#include "perl.h"	6	#include "perl.h"
7	#include "XSUB.h"	7	#include "XSUB.h"
		8
		9	#if !defined mg_findext
		10	# define mg_findext(sv,type,vtbl) mg_find (sv, type)
		11	#endif
8		12
9	#include <stddef.h>	13	#include <stddef.h>
10	#include <stdlib.h>	14	#include <stdlib.h>
11	#include <errno.h>	15	#include <errno.h>
12	#include <sys/types.h>	16	#include <sys/types.h>
		17	#include <sys/socket.h>
13	#include <sys/stat.h>	18	#include <sys/stat.h>
14	#include <limits.h>	19	#include <limits.h>
15	#include <fcntl.h>	20	#include <fcntl.h>
16	#include <sched.h>	21	#include <sched.h>
17		22
		23	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		24	# include <sys/mman.h>
		25	#endif
		26
		27	/* the incompetent fool that created musl keeps __linux__, refuses
		28	* to implement any linux standard apis, and also has no way to test
		29	* for his broken iplementation. don't complain to me if this fails
		30	* for you.
		31	*/
		32	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		33	# include <linux/fs.h>
		34	# ifdef FS_IOC_FIEMAP
		35	# include <linux/types.h>
		36	# include <linux/fiemap.h>
		37	# define HAVE_FIEMAP 1
		38	# endif
		39	#endif
		40
		41	/* perl namespace pollution */
		42	#undef VERSION
		43
		44	/* perl stupidly overrides readdir and maybe others */
		45	/* with thread-unsafe versions, imagine that :( */
		46	#undef readdir
		47	#undef opendir
		48	#undef closedir
		49
18	#ifdef _WIN32	50	#ifdef _WIN32
19		51
20	# define SIGIO 0	52	// perl overrides all those nice libc functions
21	typedef Direntry_t X_DIRENT;	53
22	#undef malloc	54	#undef malloc
23	#undef free	55	#undef free
24
25	// perl overrides all those nice win32 functions
26	# undef open	56	#undef open
27	# undef read	57	#undef read
28	# undef write	58	#undef write
29	# undef send	59	#undef send
30	# undef recv	60	#undef recv
31	# undef stat	61	#undef stat
		62	#undef lstat
32	# undef fstat	63	#undef fstat
33	# define lstat stat
34	# undef truncate	64	#undef truncate
35	# undef ftruncate	65	#undef ftruncate
36	# undef open	66	#undef open
		67	#undef link
37	# undef close	68	#undef close
38	# undef unlink	69	#undef unlink
		70	#undef mkdir
39	# undef rmdir	71	#undef rmdir
40	# undef rename	72	#undef rename
41	# undef lseek	73	#undef lseek
		74	#undef opendir
		75	#undef readdir
		76	#undef closedir
		77	#undef chmod
		78	#undef fchmod
		79	#undef dup
		80	#undef dup2
		81	#undef abort
		82	#undef pipe
42		83
43	# define chown(a,b,c) (errno = ENOSYS, -1)	84	#define EIO_STRUCT_STAT struct _stati64
44	# define fchown(a,b,c) (errno = ENOSYS, -1)	85	#define EIO_STRUCT_STATI64
45	# define fchmod(a,b) (errno = ENOSYS, -1)
46	# define symlink(a,b) (errno = ENOSYS, -1)
47	# define readlink(a,b,c) (errno = ENOSYS, -1)
48	# define mknod(a,b,c) (errno = ENOSYS, -1)
49	# define truncate(a,b) (errno = ENOSYS, -1)
50	# define ftruncate(fd,o) chsize ((fd), (o))
51	# define fsync(fd) _commit (fd)
52	# define opendir(fd) (errno = ENOSYS, 0)
53	# define readdir(fd) (errno = ENOSYS, -1)
54	# define closedir(fd) (errno = ENOSYS, -1)
55	# define mkdir(a,b) mkdir (a)
56		86
57	#else	87	#else
58		88
59	# include "autoconf/config.h"
60	# include <sys/time.h>	89	#include <sys/time.h>
61	# include <sys/select.h>	90	#include <sys/select.h>
62	# include <unistd.h>	91	#include <unistd.h>
63	# include <utime.h>	92	#include <utime.h>
64	# include <signal.h>	93	#include <signal.h>
65	typedef struct dirent X_DIRENT;
66		94
67	#endif	95	#define EIO_STRUCT_STAT Stat_t
68		96
69	#if HAVE_SENDFILE	97	#endif
70	# if __linux	98
		99	/*****************************************************************************/
		100
		101	#if __GNUC__ >= 3
		102	# define expect(expr,value) __builtin_expect ((expr),(value))
		103	#else
		104	# define expect(expr,value) (expr)
		105	#endif
		106
		107	#define expect_false(expr) expect ((expr) != 0, 0)
		108	#define expect_true(expr) expect ((expr) != 0, 1)
		109
		110	/*****************************************************************************/
		111
		112	#include "config.h"
		113
		114	#if HAVE_ST_XTIMENSEC
		115	# define ATIMENSEC PL_statcache.st_atimensec
		116	# define MTIMENSEC PL_statcache.st_mtimensec
		117	# define CTIMENSEC PL_statcache.st_ctimensec
		118	#elif HAVE_ST_XTIMESPEC
		119	# define ATIMENSEC PL_statcache.st_atim.tv_nsec
		120	# define MTIMENSEC PL_statcache.st_mtim.tv_nsec
		121	# define CTIMENSEC PL_statcache.st_ctim.tv_nsec
		122	#else
		123	# define ATIMENSEC 0
		124	# define MTIMENSEC 0
		125	# define CTIMENSEC 0
		126	#endif
		127
		128	#include "schmorp.h"
		129
		130	#if HAVE_EVENTFD
71	# include <sys/sendfile.h>	131	# include <sys/eventfd.h>
72	# elif __freebsd	132	#endif
73	# include <sys/socket.h>	133
		134	#if HAVE_TIMERFD
74	# include <sys/uio.h>	135	# include <sys/timerfd.h>
75	# elif __hpux	136	#endif
		137
		138	#if HAVE_RLIMITS
		139	#include <sys/time.h>
76	# include <sys/socket.h>	140	#include <sys/resource.h>
77	# elif __solaris /* not yet */	141	#endif
78	# include <sys/sendfile.h>	142
		143	typedef SV SV8; /* byte-sv, used for argument-checking */
		144	typedef int aio_rfd; /* read file desriptor */
		145	typedef int aio_wfd; /* write file descriptor */
		146
		147	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		148
		149	#define EIO_REQ_MEMBERS \
		150	SV *callback; \
		151	SV *sv1, *sv2; \
		152	SV *sv3, *sv4; \
		153	STRLEN stroffset; \
		154	SV *self;
		155
		156	#define EIO_NO_WRAPPERS 1
		157
		158	#include "libeio/eio.h"
		159
		160	static int req_invoke (eio_req *req);
		161	#define EIO_FINISH(req) req_invoke (req)
		162	static void req_destroy (eio_req *grp);
		163	#define EIO_DESTROY(req) req_destroy (req)
		164
		165	#include "libeio/eio.c"
		166
		167	#if !HAVE_POSIX_FADVISE
		168	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		169	#endif
		170
		171	#if !HAVE_POSIX_MADVISE
		172	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		173	#endif
		174
		175	#ifndef MAP_ANONYMOUS
		176	# ifdef MAP_ANON
		177	# define MAP_ANONYMOUS MAP_ANON
79	# else	178	# else
80	# error sendfile support requested but not available	179	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
81	# endif	180	# endif
82	#endif	181	#endif
83		182
84	/* number of seconds after which idle threads exit */	183	#ifndef makedev
85	#define IDLE_TIMEOUT 10	184	# define makedev(maj,min) (((maj) << 8) | (min))
86
87	/* used for struct dirent, AIX doesn't provide it */
88	#ifndef NAME_MAX
89	# define NAME_MAX 4096
90	#endif	185	#endif
91		186	#ifndef major
92	/* buffer size for various temporary buffers */	187	# define major(dev) ((dev) >> 8)
93	#define AIO_BUFSIZE 65536
94
95	/* use NV for 32 bit perls as it allows larger offsets */
96	#if IVSIZE >= 8
97	# define SvVAL64 SvIV
98	#else
99	# define SvVAL64 SvNV
100	#endif	188	#endif
		189	#ifndef minor
		190	# define minor(dev) ((dev) & 0xff)
		191	#endif
101		192
102	static HV *stash;	193	#if PAGESIZE <= 0
		194	# define PAGESIZE sysconf (_SC_PAGESIZE)
		195	#endif
103		196
104	#define dBUF \	197	/*****************************************************************************/
105	char *aio_buf; \	198
106	X_LOCK (wrklock); \	199	#if !_POSIX_MAPPED_FILES
107	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	200	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, (void *)-1)
108	X_UNLOCK (wrklock); \	201	# define munmap(addr,length) EIO_ENOSYS ()
109	if (!aio_buf) \	202	#endif
		203
		204	#if !_POSIX_MEMORY_PROTECTION
		205	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		206	#endif
		207
		208	#if !MREMAP_MAYMOVE
		209	# define mremap(old_address,old_size,new_size,flags,new_address) (errno = ENOSYS, (void *)-1)
		210	#endif
		211
		212	#define FOREIGN_MAGIC PERL_MAGIC_ext
		213
		214	static int ecb_cold
		215	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		216	{
		217	int old_errno = errno;
		218	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		219	errno = old_errno;
		220
		221	mg->mg_obj = 0; /* just in case */
		222
		223	SvREADONLY_off (sv);
		224
		225	if (SvPVX (sv) != mg->mg_ptr)
		226	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		227
		228	SvCUR_set (sv, 0);
		229	SvPVX (sv) = 0;
		230	SvOK_off (sv);
		231
110	return -1;	232	return 0;
		233	}
111		234
112	typedef SV SV8; /* byte-sv, used for argument-checking */	235	static MGVTBL mmap_vtbl = {
113		236	0, 0, 0, 0, mmap_free
114	enum {
115	REQ_QUIT,
116	REQ_OPEN, REQ_CLOSE,
117	REQ_READ, REQ_WRITE,
118	REQ_READAHEAD, REQ_SENDFILE,
119	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
120	REQ_TRUNCATE, REQ_FTRUNCATE,
121	REQ_UTIME, REQ_FUTIME,
122	REQ_CHMOD, REQ_FCHMOD,
123	REQ_CHOWN, REQ_FCHOWN,
124	REQ_FSYNC, REQ_FDATASYNC,
125	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
126	REQ_MKNOD, REQ_READDIR,
127	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
128	REQ_GROUP, REQ_NOP,
129	REQ_BUSY,
130	};	237	};
131		238
132	#define AIO_REQ_KLASS "IO::AIO::REQ"	239	static int ecb_cold
133	#define AIO_GRP_KLASS "IO::AIO::GRP"	240	sysfree_free (pTHX_ SV *sv, MAGIC *mg)
134
135	typedef struct aio_cb
136	{	241	{
137	struct aio_cb *volatile next;	242	free (mg->mg_ptr);
		243	mg->mg_obj = 0; /* just in case */
138		244
139	SV *callback;	245	SvREADONLY_off (sv);
140	SV *sv1, *sv2;
141	void *ptr1, *ptr2;
142	off_t offs;
143	size_t size;
144	ssize_t result;
145	double nv1, nv2;
146		246
147	STRLEN stroffset;	247	if (SvPVX (sv) != mg->mg_ptr)
148	int type;	248	croak ("ERROR: IO::AIO mapped scalar changed location, detected");
149	int int1, int2, int3;
150	int errorno;
151	mode_t mode; /* open */
152		249
153	unsigned char flags;	250	SvCUR_set (sv, 0);
154	unsigned char pri;	251	SvPVX (sv) = 0;
		252	SvOK_off (sv);
155		253
156	SV *self; /* the perl counterpart of this request, if any */	254	return 0;
157	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	255	}
158	} aio_cb;
159		256
160	enum {	257	static MGVTBL sysfree_vtbl = {
161	FLAG_CANCELLED = 0x01, /* request was cancelled */	258	0, 0, 0, 0, sysfree_free
162	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
163	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
164	};	259	};
165		260
166	typedef aio_cb *aio_req;	261	/*****************************************************************************/
167	typedef aio_cb *aio_req_ornot;
168		262
169	enum {	263	/* helper: set scalar to foreign ptr with custom free */
170	PRI_MIN = -4,	264	static void
171	PRI_MAX = 4,	265	sv_set_foreign (SV *sv, const MGVTBL *const vtbl, void *addr, IV length)
172
173	DEFAULT_PRI = 0,
174	PRI_BIAS = -PRI_MIN,
175	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
176	};
177
178	#define AIO_TICKS ((1000000 + 1023) >> 10)
179
180	static unsigned int max_poll_time = 0;
181	static unsigned int max_poll_reqs = 0;
182
183	/* calculcate time difference in ~1/AIO_TICKS of a second */
184	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
185	{	266	{
186	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS	267	sv_force_normal (sv);
187	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
188	}
189		268
190	static thread_t main_tid;	269	/* we store the length in mg_obj, as namlen is I32 :/ */
191	static int main_sig;	270	sv_magicext (sv, 0, FOREIGN_MAGIC, vtbl, (char *)addr, 0)
192	static int block_sig_level;	271	->mg_obj = (SV *)length;
193		272
194	void block_sig ()	273	SvUPGRADE (sv, SVt_PV); /* nop... */
195	{
196	sigset_t ss;
197		274
198	if (block_sig_level++)	275	if (SvLEN (sv))
		276	Safefree (SvPVX (sv));
		277
		278	SvPVX (sv) = (char *)addr;
		279	SvCUR_set (sv, length);
		280	SvLEN_set (sv, 0);
		281	SvPOK_only (sv);
		282	}
		283
		284	static void
		285	sv_clear_foreign (SV *sv)
		286	{
		287	/* todo: iterate over magic and only free ours, but of course */
		288	/* the perl5porters will call that (correct) behaviour buggy */
		289	sv_unmagic (sv, FOREIGN_MAGIC);
		290	}
		291
		292	/*****************************************************************************/
		293
		294	/* defines all sorts of constants to 0 unless they are already defined */
		295	/* also provides const_iv_ and const_niv_ macros for them */
		296	#include "def0.h"
		297
		298	/*****************************************************************************/
		299
		300	static void
		301	fiemap (eio_req *req)
		302	{
		303	req->result = -1;
		304
		305	#if HAVE_FIEMAP
		306	/* assume some c99 */
		307	struct fiemap *fiemap = 0;
		308	size_t end_offset;
		309	int count = req->int3;
		310
		311	req->flags |= EIO_FLAG_PTR1_FREE;
		312
		313	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
		314	/* increase in 3.5kb steps */
		315	if (count < 0)
		316	count = 8;
		317
		318	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		319	errno = ENOMEM;
		320	if (!fiemap)
199	return;	321	return;
200		322
201	if (!main_sig)	323	req->ptr1 = fiemap;
		324
		325	fiemap->fm_start = req->offs;
		326	fiemap->fm_length = req->size;
		327	fiemap->fm_flags = req->int2;
		328	fiemap->fm_extent_count = count;
		329
		330	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
202	return;	331	return;
203		332
204	sigemptyset (&ss);	333	if (req->int3 >= 0 /* not autosizing */
205	sigaddset (&ss, main_sig);	334	|| !fiemap->fm_mapped_extents /* no more extents */
206	pthread_sigmask (SIG_BLOCK, &ss, 0);	335	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
207	}	336	goto done;
208		337
209	void unblock_sig ()	338	/* else we have to loop -
210	{	339	* it would be tempting (actually I tried that first) to just query the
211	sigset_t ss;	340	* number of extents needed, but linux often feels like not returning all
		341	* extents, without telling us it left any out. this complicates
		342	* this quite a bit.
		343	*/
212		344
213	if (--block_sig_level)	345	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
214	return;
215		346
216	if (!main_sig)	347	for (;;)
217	return;
218
219	sigemptyset (&ss);
220	sigaddset (&ss, main_sig);
221	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
222	}
223
224	static int next_pri = DEFAULT_PRI + PRI_BIAS;
225
226	static unsigned int started, idle, wanted;
227
228	/* worker threads management */
229	static mutex_t wrklock = X_MUTEX_INIT;
230
231	typedef struct worker {
232	/* locked by wrklock */
233	struct worker *prev, *next;
234
235	thread_t tid;
236
237	/* locked by reslock, reqlock or wrklock */
238	aio_req req; /* currently processed request */
239	void *dbuf;
240	DIR *dirp;
241	} worker;
242
243	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
244
245	static void worker_clear (worker *wrk)
246	{
247	if (wrk->dirp)
248	{	348	{
249	closedir (wrk->dirp);	349	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
250	wrk->dirp = 0;	350	char scratch[3072];
251	}	351	struct fiemap *incmap = (struct fiemap *)scratch;
252		352
253	if (wrk->dbuf)	353	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
254	{	354	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
255	free (wrk->dbuf);	355	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
256	wrk->dbuf = 0;	356	incmap->fm_flags = fiemap->fm_flags;
257	}	357	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
258	}
259		358
260	static void worker_free (worker *wrk)	359	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
261	{
262	wrk->next->prev = wrk->prev;
263	wrk->prev->next = wrk->next;
264
265	free (wrk);
266	}
267
268	static volatile unsigned int nreqs, nready, npending;
269	static volatile unsigned int max_idle = 4;
270	static volatile unsigned int max_outstanding = 0xffffffff;
271	static int respipe_osf [2], respipe [2] = { -1, -1 };
272
273	static mutex_t reslock = X_MUTEX_INIT;
274	static mutex_t reqlock = X_MUTEX_INIT;
275	static cond_t reqwait = X_COND_INIT;
276
277	#if WORDACCESS_UNSAFE
278
279	static unsigned int get_nready ()
280	{
281	unsigned int retval;
282
283	X_LOCK (reqlock);
284	retval = nready;
285	X_UNLOCK (reqlock);
286
287	return retval;
288	}
289
290	static unsigned int get_npending ()
291	{
292	unsigned int retval;
293
294	X_LOCK (reslock);
295	retval = npending;
296	X_UNLOCK (reslock);
297
298	return retval;
299	}
300
301	static unsigned int get_nthreads ()
302	{
303	unsigned int retval;
304
305	X_LOCK (wrklock);
306	retval = started;
307	X_UNLOCK (wrklock);
308
309	return retval;
310	}
311
312	#else
313
314	# define get_nready() nready
315	# define get_npending() npending
316	# define get_nthreads() started
317
318	#endif
319
320	/*
321	* a somewhat faster data structure might be nice, but
322	* with 8 priorities this actually needs <20 insns
323	* per shift, the most expensive operation.
324	*/
325	typedef struct {
326	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
327	int size;
328	} reqq;
329
330	static reqq req_queue;
331	static reqq res_queue;
332
333	int reqq_push (reqq *q, aio_req req)
334	{
335	int pri = req->pri;
336	req->next = 0;
337
338	if (q->qe[pri])
339	{
340	q->qe[pri]->next = req;
341	q->qe[pri] = req;
342	}
343	else
344	q->qe[pri] = q->qs[pri] = req;
345
346	return q->size++;
347	}
348
349	aio_req reqq_shift (reqq *q)
350	{
351	int pri;
352
353	if (!q->size)
354	return 0;	360	return;
355		361
356	--q->size;	362	if (!incmap->fm_mapped_extents)
		363	goto done;
357		364
358	for (pri = NUM_PRI; pri--; )	365	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
359	{	366	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
360	aio_req req = q->qs[pri];	367	errno = ENOMEM;
361
362	if (req)	368	if (!fiemap)
		369	return;
		370
		371	req->ptr1 = fiemap;
		372
		373	for (count = 0; count < incmap->fm_mapped_extents; ++count)
363	{	374	{
364	if (!(q->qs[pri] = req->next))	375	struct fiemap_extent *e = incmap->fm_extents + count;
365	q->qe[pri] = 0;
366		376
367	return req;	377	if (e->fe_logical + e->fe_length >= end_offset)
		378	goto done;
		379
		380	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
		381
		382	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		383	goto done;
		384
368	}	385	}
369	}	386	}
370		387
371	abort ();	388	done:
372	}	389	req->result = 0;
373		390
374	static int poll_cb ();	391	#else
375	static int req_invoke (aio_req req);	392	errno = ENOSYS;
		393	#endif
		394	}
		395
		396	/*****************************************************************************/
		397
		398	enum {
		399	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		400	};
		401
		402	typedef eio_req *aio_req;
		403	typedef eio_req *aio_req_ornot;
		404	typedef eio_wd aio_wd;
		405
		406	static SV *on_next_submit;
		407	static int next_pri = EIO_PRI_DEFAULT;
		408	static int max_outstanding;
		409
		410	static s_epipe respipe;
		411
376	static void req_destroy (aio_req req);	412	static void req_destroy (aio_req req);
377	static void req_cancel (aio_req req);	413	static void req_cancel (aio_req req);
378		414
		415	static void
		416	want_poll (void)
		417	{
		418	/* write a dummy byte to the pipe so fh becomes ready */
		419	s_epipe_signal (&respipe);
		420	}
		421
		422	static void
		423	done_poll (void)
		424	{
		425	/* read any signals sent by the worker threads */
		426	s_epipe_drain (&respipe);
		427	}
		428
379	/* must be called at most once */	429	/* must be called at most once */
380	static SV *req_sv (aio_req req, const char *klass)	430	static SV *
		431	req_sv (aio_req req, HV *stash)
381	{	432	{
382	if (!req->self)	433	if (!req->self)
383	{	434	{
384	req->self = (SV *)newHV ();	435	req->self = (SV *)newHV ();
385	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);	436	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
386	}	437	}
387		438
388	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));	439	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
389	}	440	}
390		441
391	static aio_req SvAIO_REQ (SV *sv)	442	static SV *
		443	newSVaio_wd (aio_wd wd)
		444	{
		445	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		446	}
		447
		448	static aio_req
		449	SvAIO_REQ (SV *sv)
392	{	450	{
393	MAGIC *mg;	451	MAGIC *mg;
394		452
395	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))	453	if (!SvROK (sv)
		454	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		455	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		456	&& SvSTASH (SvRV (sv)) != aio_req_stash
		457	&& !sv_derived_from (sv, "IO::AIO::REQ")))
396	croak ("object of class " AIO_REQ_KLASS " expected");	458	croak ("object of class IO::AIO::REQ expected");
397		459
398	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);	460	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
399		461
400	return mg ? (aio_req)mg->mg_ptr : 0;	462	return mg ? (aio_req)mg->mg_ptr : 0;
401	}	463	}
402		464
		465	static aio_wd
		466	SvAIO_WD (SV *sv)
		467	{
		468	if (!SvROK (sv)
		469	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		470	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		471	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		472
		473	return (aio_wd)(long)SvIVX (SvRV (sv));
		474	}
		475
		476	static SV *
		477	newmortalFH (int fd, int flags)
		478	{
		479	if (fd < 0)
		480	return &PL_sv_undef;
		481
		482	GV *gv = (GV *)sv_newmortal ();
		483	char sym[64];
		484	int symlen;
		485
		486	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		487	gv_init (gv, aio_stash, sym, symlen, 0);
		488
		489	symlen = snprintf (
		490	sym,
		491	sizeof (sym),
		492	"%s&=%d",
		493	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		494	fd
		495	);
		496
		497	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		498	? (SV *)gv : &PL_sv_undef;
		499	}
		500
		501	static void
403	static void aio_grp_feed (aio_req grp)	502	aio_grp_feed (aio_req grp)
404	{	503	{
405	block_sig ();	504	if (grp->sv2 && SvOK (grp->sv2))
406
407	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
408	{	505	{
409	int old_len = grp->size;
410
411	if (grp->sv2 && SvOK (grp->sv2))
412	{
413	dSP;	506	dSP;
414		507
415	ENTER;	508	ENTER;
416	SAVETMPS;	509	SAVETMPS;
417	PUSHMARK (SP);	510	PUSHMARK (SP);
418	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	511	XPUSHs (req_sv (grp, aio_grp_stash));
419	PUTBACK;	512	PUTBACK;
420	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);	513	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
421	SPAGAIN;	514	SPAGAIN;
422	FREETMPS;	515	FREETMPS;
423	LEAVE;	516	LEAVE;
424	}
425
426	/* stop if no progress has been made */
427	if (old_len == grp->size)
428	{
429	SvREFCNT_dec (grp->sv2);
430	grp->sv2 = 0;
431	break;
432	}
433	}	517	}
434
435	unblock_sig ();
436	}	518	}
437		519
438	static void aio_grp_dec (aio_req grp)	520	static void
		521	req_submit (eio_req *req)
439	{	522	{
440	--grp->size;	523	eio_submit (req);
441		524
442	/* call feeder, if applicable */	525	if (expect_false (on_next_submit))
443	aio_grp_feed (grp);
444
445	/* finish, if done */
446	if (!grp->size && grp->int1)
447	{	526	{
448	block_sig ();	527	dSP;
		528	SV *cb = sv_2mortal (on_next_submit);
449		529
450	if (!req_invoke (grp))	530	on_next_submit = 0;
451	{
452	req_destroy (grp);
453	unblock_sig ();
454	croak (0);
455	}
456		531
457	req_destroy (grp);	532	PUSHMARK (SP);
458	unblock_sig ();	533	PUTBACK;
		534	call_sv (cb, G_DISCARD | G_EVAL);
459	}	535	}
460	}	536	}
461		537
		538	static int
462	static int req_invoke (aio_req req)	539	req_invoke (eio_req *req)
463	{	540	{
464	dSP;
465
466	if (req->flags & FLAG_SV2_RO_OFF)	541	if (req->flags & FLAG_SV2_RO_OFF)
467	SvREADONLY_off (req->sv2);	542	SvREADONLY_off (req->sv2);
468		543
469	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	544	if (!EIO_CANCELLED (req) && req->callback)
470	{	545	{
		546	dSP;
		547	static SV *sv_result_cache; /* caches the result integer SV */
		548	SV *sv_result;
		549
471	ENTER;	550	ENTER;
472	SAVETMPS;	551	SAVETMPS;
473	PUSHMARK (SP);	552	PUSHMARK (SP);
474	EXTEND (SP, 1);	553	EXTEND (SP, 1);
475		554
		555	/* do not recreate the result IV from scratch each time */
		556	if (expect_true (sv_result_cache))
		557	{
		558	sv_result = sv_result_cache; sv_result_cache = 0;
		559	SvIV_set (sv_result, req->result);
		560	SvIOK_only (sv_result);
		561	}
		562	else
		563	{
		564	sv_result = newSViv (req->result);
		565	SvREADONLY_on (sv_result);
		566	}
		567
476	switch (req->type)	568	switch (req->type)
477	{	569	{
		570	case EIO_WD_OPEN:
		571	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		572	break;
		573
478	case REQ_READDIR:	574	case EIO_READDIR:
479	{	575	{
480	SV *rv = &PL_sv_undef;	576	SV *rv = &PL_sv_undef;
481		577
482	if (req->result >= 0)	578	if (req->result >= 0)
483	{	579	{
484	int i;	580	int i;
485	char *buf = req->ptr2;	581	char *names = (char *)req->ptr2;
		582	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
486	AV *av = newAV ();	583	AV *av = newAV ();
487		584
488	av_extend (av, req->result - 1);	585	av_extend (av, req->result - 1);
489		586
490	for (i = 0; i < req->result; ++i)	587	for (i = 0; i < req->result; ++i)
491	{	588	{
492	SV *sv = newSVpv (buf, 0);	589	if (req->int1 & EIO_READDIR_DENTS)
		590	{
		591	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
493		592
		593	if (req->int1 & EIO_READDIR_CUSTOM2)
		594	{
		595	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		596	AV *avent = newAV ();
		597
		598	av_extend (avent, 2);
		599
		600	if (!sv_type [ent->type])
		601	{
		602	sv_type [ent->type] = newSViv (ent->type);
		603	SvREADONLY_on (sv_type [ent->type]);
		604	}
		605
		606	av_store (avent, 0, namesv);
		607	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		608	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		609
		610	av_store (av, i, newRV_noinc ((SV *)avent));
		611	}
		612	else
494	av_store (av, i, sv);	613	av_store (av, i, namesv);
		614
		615	++ent;
		616	}
		617	else
		618	{
		619	SV *name = newSVpv (names, 0);
		620	av_store (av, i, name);
495	buf += SvCUR (sv) + 1;	621	names += SvCUR (name) + 1;
		622	}
496	}	623	}
497		624
498	rv = sv_2mortal (newRV_noinc ((SV *)av));	625	rv = sv_2mortal (newRV_noinc ((SV *)av));
499	}	626	}
500		627
501	PUSHs (rv);	628	PUSHs (rv);
		629
		630	if (req->int1 & EIO_READDIR_CUSTOM1)
		631	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
502	}	632	}
503	break;	633	break;
504		634
505	case REQ_OPEN:	635	case EIO_OPEN:
		636	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		637	break;
		638
		639	case EIO_STATVFS:
		640	case EIO_FSTATVFS:
506	{	641	{
507	/* convert fd to fh */
508	SV *fh = &PL_sv_undef;	642	SV *rv = &PL_sv_undef;
509		643
		644	#ifndef _WIN32
510	if (req->result >= 0)	645	if (req->result >= 0)
511	{	646	{
		647	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
512	GV *gv = (GV *)sv_newmortal ();	648	HV *hv = newHV ();
513	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);	649	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
514	char sym [64];	650	* chooses to make it a struct.
515	int symlen;
516		651	*/
517	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);	652	unsigned long fsid = 0;
518	gv_init (gv, stash, sym, symlen, 0);	653	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
519		654
520	symlen = snprintf (	655	rv = sv_2mortal (newRV_noinc ((SV *)hv));
521	sym,
522	sizeof (sym),
523	"%s&=%d",
524	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
525	req->result
526	);
527		656
528	if (do_open (gv, sym, symlen, 0, 0, 0, 0))	657	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
529	fh = gv;	658	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		659	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		660	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		661	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		662	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		663	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		664	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		665	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		666	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		667	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
530	}	668	}
		669	#endif
531		670
532	XPUSHs (fh);	671	PUSHs (rv);
533	}	672	}
		673
534	break;	674	break;
535		675
536	case REQ_GROUP:	676	case EIO_GROUP:
537	req->int1 = 2; /* mark group as finished */	677	req->int1 = 2; /* mark group as finished */
538		678
539	if (req->sv1)	679	if (req->sv1)
540	{	680	{
541	int i;	681	int i;
…		…
545	for (i = 0; i <= AvFILL (av); ++i)	685	for (i = 0; i <= AvFILL (av); ++i)
546	PUSHs (*av_fetch (av, i, 0));	686	PUSHs (*av_fetch (av, i, 0));
547	}	687	}
548	break;	688	break;
549		689
550	case REQ_NOP:	690	case EIO_NOP:
551	case REQ_BUSY:	691	case EIO_BUSY:
552	break;	692	break;
553		693
554	case REQ_READLINK:	694	case EIO_READLINK:
		695	case EIO_REALPATH:
555	if (req->result > 0)	696	if (req->result > 0)
		697	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		698	break;
		699
		700	case EIO_STAT:
		701	case EIO_LSTAT:
		702	case EIO_FSTAT:
		703	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		704
		705	if (!(PL_laststatval = req->result))
		706	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		707	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		708
		709	PUSHs (sv_result);
		710	break;
		711
		712	case EIO_SEEK:
		713	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		714	break;
		715
		716	case EIO_READ:
		717	{
		718	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		719	*SvEND (req->sv2) = 0;
		720	SvPOK_only (req->sv2);
		721	SvSETMAGIC (req->sv2);
		722	PUSHs (sv_result);
		723	}
		724	break;
		725
		726	case EIO_SLURP:
		727	{
		728	if (req->result >= 0)
		729	{
		730	/* if length was originally not known, we steal the malloc'ed memory */
		731	if (req->flags & EIO_FLAG_PTR2_FREE)
		732	{
		733	req->flags &= ~EIO_FLAG_PTR2_FREE;
		734	sv_set_foreign (req->sv2, &sysfree_vtbl, req->ptr2, req->result);
		735	}
		736	else
		737	{
		738	SvCUR_set (req->sv2, req->result);
		739	*SvEND (req->sv2) = 0;
		740	SvPOK_only (req->sv2);
		741	}
		742
		743	SvSETMAGIC (req->sv2);
		744	}
		745
		746	PUSHs (sv_result);
		747	}
		748	break;
		749
		750	case EIO_CUSTOM:
		751	if (req->feed == fiemap)
556	{	752	{
557	SvCUR_set (req->sv2, req->result);	753	#if HAVE_FIEMAP
558	*SvEND (req->sv2) = 0;
559	PUSHs (req->sv2);	754	if (!req->result)
		755	{
		756	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		757
		758	if (fiemap->fm_extent_count)
		759	{
		760	AV *av = newAV ();
		761	int i;
		762
		763	while (fiemap->fm_mapped_extents)
		764	{
		765	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		766	AV *ext_av = newAV ();
		767
		768	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		769	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		770	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		771	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		772
		773	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		774	}
		775
		776	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		777	}
		778	else
		779	{
		780	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		781	PUSHs (sv_result);
		782	}
		783	}
		784	#endif
560	}	785	}
		786	else
		787	PUSHs (sv_result);
561	break;	788	break;
562		789
563	case REQ_STAT:	790	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
564	case REQ_LSTAT:	791	if (req->result > 0)
565	case REQ_FSTAT:	792	SvIV_set (sv_result, 0);
566	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	793	/* FALLTHROUGH */
567	PL_laststatval = req->result;
568	PL_statcache = *(Stat_t *)(req->ptr2);
569	PUSHs (sv_2mortal (newSViv (req->result)));
570	break;
571
572	case REQ_READ:
573	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
574	*SvEND (req->sv2) = 0;
575	PUSHs (sv_2mortal (newSViv (req->result)));
576	break;
577		794
578	default:	795	default:
579	PUSHs (sv_2mortal (newSViv (req->result)));	796	PUSHs (sv_result);
580	break;	797	break;
581	}	798	}
582		799
583	errno = req->errorno;	800	errno = req->errorno;
584		801
585	PUTBACK;	802	PUTBACK;
586	call_sv (req->callback, G_VOID | G_EVAL);	803	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
587	SPAGAIN;	804	SPAGAIN;
		805
		806	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		807	SvREFCNT_dec (sv_result);
		808	else
		809	sv_result_cache = sv_result;
588		810
589	FREETMPS;	811	FREETMPS;
590	LEAVE;	812	LEAVE;
		813
		814	PUTBACK;
591	}	815	}
592		816
593	if (req->grp)
594	{
595	aio_req grp = req->grp;
596
597	/* unlink request */
598	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
599	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
600
601	if (grp->grp_first == req)
602	grp->grp_first = req->grp_next;
603
604	aio_grp_dec (grp);
605	}
606
607	return !SvTRUE (ERRSV);	817	return !!SvTRUE (ERRSV);
608	}	818	}
609		819
		820	static void
610	static void req_destroy (aio_req req)	821	req_destroy (aio_req req)
611	{	822	{
612	if (req->self)	823	if (req->self)
613	{	824	{
614	sv_unmagic (req->self, PERL_MAGIC_ext);	825	sv_unmagic (req->self, PERL_MAGIC_ext);
615	SvREFCNT_dec (req->self);	826	SvREFCNT_dec (req->self);
616	}	827	}
617		828
618	SvREFCNT_dec (req->sv1);	829	SvREFCNT_dec (req->sv1);
619	SvREFCNT_dec (req->sv2);	830	SvREFCNT_dec (req->sv2);
		831	SvREFCNT_dec (req->sv3);
		832	SvREFCNT_dec (req->sv4);
620	SvREFCNT_dec (req->callback);	833	SvREFCNT_dec (req->callback);
621		834
622	if (req->flags & FLAG_PTR2_FREE)
623	free (req->ptr2);
624
625	Safefree (req);	835	free (req);
626	}	836	}
627		837
		838	static void
628	static void req_cancel_subs (aio_req grp)	839	req_cancel_subs (aio_req grp)
629	{	840	{
630	aio_req sub;
631
632	if (grp->type != REQ_GROUP)	841	if (grp->type != EIO_GROUP)
633	return;	842	return;
634		843
635	SvREFCNT_dec (grp->sv2);	844	SvREFCNT_dec (grp->sv2);
636	grp->sv2 = 0;	845	grp->sv2 = 0;
637		846
638	for (sub = grp->grp_first; sub; sub = sub->grp_next)	847	eio_grp_cancel (grp);
639	req_cancel (sub);
640	}	848	}
641		849
642	static void req_cancel (aio_req req)	850	static void ecb_cold
		851	create_respipe (void)
643	{	852	{
644	req->flags |= FLAG_CANCELLED;	853	if (s_epipe_renew (&respipe))
645		854	croak ("IO::AIO: unable to initialize result pipe");
646	req_cancel_subs (req);
647	}	855	}
648
649	#ifdef USE_SOCKETS_AS_HANDLES
650	# define TO_SOCKET(x) (win32_get_osfhandle (x))
651	#else
652	# define TO_SOCKET(x) (x)
653	#endif
654		856
655	static void	857	static void
656	create_respipe ()	858	poll_wait (void)
657	{	859	{
658	int old_readfd = respipe [0];
659
660	if (respipe [1] >= 0)
661	respipe_close (TO_SOCKET (respipe [1]));
662
663	#ifdef _WIN32
664	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
665	#else
666	if (pipe (respipe))
667	#endif
668	croak ("unable to initialize result pipe");
669
670	if (old_readfd >= 0)
671	{
672	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
673	croak ("unable to initialize result pipe(2)");
674
675	respipe_close (respipe [0]);
676	respipe [0] = old_readfd;
677	}
678
679	#ifdef _WIN32
680	int arg = 1;
681	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
682	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
683	#else
684	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
685	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
686	#endif
687	croak ("unable to initialize result pipe(3)");
688
689	respipe_osf [0] = TO_SOCKET (respipe [0]);
690	respipe_osf [1] = TO_SOCKET (respipe [1]);
691	}
692
693	X_THREAD_PROC (aio_proc);
694
695	static void start_thread (void)
696	{
697	worker *wrk = calloc (1, sizeof (worker));
698
699	if (!wrk)
700	croak ("unable to allocate worker thread data");
701
702	X_LOCK (wrklock);
703
704	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
705	{
706	wrk->prev = &wrk_first;
707	wrk->next = wrk_first.next;
708	wrk_first.next->prev = wrk;
709	wrk_first.next = wrk;
710	++started;
711	}
712	else
713	free (wrk);
714
715	X_UNLOCK (wrklock);
716	}
717
718	static void maybe_start_thread ()
719	{
720	if (get_nthreads () >= wanted)
721	return;
722
723	/* todo: maybe use idle here, but might be less exact */
724	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
725	return;
726
727	start_thread ();
728	}
729
730	static void req_send (aio_req req)
731	{
732	block_sig ();
733
734	++nreqs;
735
736	X_LOCK (reqlock);
737	++nready;
738	reqq_push (&req_queue, req);
739	X_COND_SIGNAL (reqwait);
740	X_UNLOCK (reqlock);
741
742	unblock_sig ();
743
744	maybe_start_thread ();
745	}
746
747	static void end_thread (void)
748	{
749	aio_req req;
750
751	Newz (0, req, 1, aio_cb);
752
753	req->type = REQ_QUIT;
754	req->pri = PRI_MAX + PRI_BIAS;
755
756	X_LOCK (reqlock);
757	reqq_push (&req_queue, req);
758	X_COND_SIGNAL (reqwait);
759	X_UNLOCK (reqlock);
760
761	X_LOCK (wrklock);
762	--started;
763	X_UNLOCK (wrklock);
764	}
765
766	static void set_max_idle (int nthreads)
767	{
768	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
769	max_idle = nthreads <= 0 ? 1 : nthreads;
770	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
771	}
772
773	static void min_parallel (int nthreads)
774	{
775	if (wanted < nthreads)
776	wanted = nthreads;
777	}
778
779	static void max_parallel (int nthreads)
780	{
781	if (wanted > nthreads)
782	wanted = nthreads;
783
784	while (started > wanted)
785	end_thread ();
786	}
787
788	static void poll_wait ()
789	{
790	fd_set rfd;
791
792	while (nreqs)	860	while (eio_nreqs ())
793	{	861	{
794	int size;	862	int size;
795	if (WORDACCESS_UNSAFE) X_LOCK (reslock);	863
		864	X_LOCK (EIO_POOL->reslock);
796	size = res_queue.size;	865	size = EIO_POOL->res_queue.size;
797	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);	866	X_UNLOCK (EIO_POOL->reslock);
798		867
799	if (size)	868	if (size)
800	return;	869	return;
801		870
802	maybe_start_thread ();	871	etp_maybe_start_thread (EIO_POOL);
803		872
804	FD_ZERO (&rfd);	873	s_epipe_wait (&respipe);
805	FD_SET (respipe [0], &rfd);
806
807	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
808	}	874	}
809	}	875	}
810		876
811	static int poll_cb ()	877	static int
		878	poll_cb (void)
812	{	879	{
813	dSP;
814	int count = 0;
815	int maxreqs = max_poll_reqs;
816	int do_croak = 0;
817	struct timeval tv_start, tv_now;
818	aio_req req;
819
820	if (max_poll_time)
821	gettimeofday (&tv_start, 0);
822
823	block_sig ();
824
825	for (;;)	880	for (;;)
826	{	881	{
827	for (;;)	882	int res = eio_poll ();
		883
		884	if (res > 0)
		885	croak (0);
		886
		887	if (!max_outstanding || max_outstanding > eio_nreqs ())
		888	return res;
		889
		890	poll_wait ();
		891	}
		892	}
		893
		894	static void ecb_cold
		895	reinit (void)
		896	{
		897	create_respipe ();
		898
		899	if (eio_init (want_poll, done_poll) < 0)
		900	croak ("IO::AIO: unable to initialise eio library");
		901	}
		902
		903	/*****************************************************************************/
		904
		905	static SV *
		906	get_cb (SV *cb_sv)
		907	{
		908	SvGETMAGIC (cb_sv);
		909	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
		910	}
		911
		912	static aio_req ecb_noinline
		913	dreq (SV *callback)
		914	{
		915	SV *cb_cv;
		916	aio_req req;
		917	int req_pri = next_pri;
		918	next_pri = EIO_PRI_DEFAULT;
		919
		920	cb_cv = get_cb (callback);
		921
		922	req = calloc (sizeof (*req), 1);
		923	if (!req)
		924	croak ("out of memory during eio_req allocation");
		925
		926	req->callback = SvREFCNT_inc (cb_cv);
		927	req->pri = req_pri;
		928
		929	return req;
		930	}
		931
		932	#define dREQ \
		933	aio_req req = dreq (callback); \
		934
		935	#define REQ_SEND \
		936	PUTBACK; \
		937	req_submit (req); \
		938	SPAGAIN; \
		939	\
		940	if (GIMME_V != G_VOID) \
		941	XPUSHs (req_sv (req, aio_req_stash));
		942
		943	ecb_inline void
		944	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		945	{
		946	if (expect_false (SvROK (path)))
		947	{
		948	SV *rv = SvRV (path);
		949	SV *wdob;
		950
		951	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
828	{	952	{
829	maybe_start_thread ();	953	path = AvARRAY (rv)[1];
		954	wdob = AvARRAY (rv)[0];
830		955
831	X_LOCK (reslock);	956	if (SvOK (wdob))
832	req = reqq_shift (&res_queue);
833
834	if (req)
835	{	957	{
836	--npending;	958	*wd = SvAIO_WD (wdob);
837		959	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
838	if (!res_queue.size)
839	{
840	/* read any signals sent by the worker threads */
841	char buf [4];
842	while (respipe_read (respipe [0], buf, 4) == 4)
843	;
844	}
845	}
846
847	X_UNLOCK (reslock);
848
849	if (!req)
850	break;
851
852	--nreqs;
853
854	if (req->type == REQ_GROUP && req->size)
855	{
856	req->int1 = 1; /* mark request as delayed */
857	continue;
858	}	960	}
859	else	961	else
860	{	962	*wd = EIO_INVALID_WD;
861	if (!req_invoke (req))
862	{
863	req_destroy (req);
864	unblock_sig ();
865	croak (0);
866	}
867
868	count++;
869	}
870
871	req_destroy (req);
872
873	if (maxreqs && !--maxreqs)
874	break;
875
876	if (max_poll_time)
877	{
878	gettimeofday (&tv_now, 0);
879
880	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
881	break;
882	}
883	}	963	}
		964	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		965	{
		966	*wd = (aio_wd)(long)SvIVX (rv);
		967	*wdsv = SvREFCNT_inc_NN (rv);
		968	*ptr = ".";
		969	return; /* path set to "." */
		970	}
		971	else
		972	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
		973	}
884		974
885	if (nreqs <= max_outstanding)	975	*pathsv = newSVsv (path);
		976	*ptr = SvPVbyte_nolen (*pathsv);
		977	}
		978
		979	static void ecb_noinline
		980	req_set_path1 (aio_req req, SV *path)
		981	{
		982	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		983	}
		984
		985	static void ecb_noinline
		986	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		987	{
		988	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		989
		990	switch (SvTYPE (rv))
		991	{
		992	case SVt_PVIO:
		993	case SVt_PVLV:
		994	case SVt_PVGV:
		995	req->type = type_fh;
		996	req->sv1 = newSVsv (fh_or_path);
		997	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
886	break;	998	break;
887		999
888	poll_wait ();	1000	default:
889		1001	req->type = type_path;
890	++maxreqs;	1002	req_set_path1 (req, fh_or_path);
		1003	break;
891	}	1004	}
892
893	unblock_sig ();
894	return count;
895	}	1005	}
896		1006
897	/*****************************************************************************/	1007	/*****************************************************************************/
898	/* work around various missing functions */
899		1008
900	#if !HAVE_PREADWRITE	1009	static void
901	# define pread aio_pread	1010	ts_set (struct timespec *ts, NV value)
902	# define pwrite aio_pwrite
903
904	/*
905	* make our pread/pwrite safe against themselves, but not against
906	* normal read/write by using a mutex. slows down execution a lot,
907	* but that's your problem, not mine.
908	*/
909	static mutex_t preadwritelock = X_MUTEX_INIT;
910
911	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
912	{	1011	{
913	ssize_t res;	1012	ts->tv_sec = value;
914	off_t ooffset;	1013	ts->tv_nsec = (value - ts->tv_sec) * 1e9;
915
916	X_LOCK (preadwritelock);
917	ooffset = lseek (fd, 0, SEEK_CUR);
918	lseek (fd, offset, SEEK_SET);
919	res = read (fd, buf, count);
920	lseek (fd, ooffset, SEEK_SET);
921	X_UNLOCK (preadwritelock);
922
923	return res;
924	}	1014	}
925		1015
926	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	1016	static NV
		1017	ts_get (const struct timespec *ts)
927	{	1018	{
928	ssize_t res;	1019	return ts->tv_sec + ts->tv_nsec * 1e-9;
929	off_t ooffset;
930
931	X_LOCK (preadwritelock);
932	ooffset = lseek (fd, 0, SEEK_CUR);
933	lseek (fd, offset, SEEK_SET);
934	res = write (fd, buf, count);
935	lseek (fd, offset, SEEK_SET);
936	X_UNLOCK (preadwritelock);
937
938	return res;
939	}
940	#endif
941
942	#ifndef HAVE_FUTIMES
943
944	# define utimes(path,times) aio_utimes (path, times)
945	# define futimes(fd,times) aio_futimes (fd, times)
946
947	int aio_utimes (const char *filename, const struct timeval times[2])
948	{
949	if (times)
950	{
951	struct utimbuf buf;
952
953	buf.actime = times[0].tv_sec;
954	buf.modtime = times[1].tv_sec;
955
956	return utime (filename, &buf);
957	}
958	else
959	return utime (filename, 0);
960	}
961
962	int aio_futimes (int fd, const struct timeval tv[2])
963	{
964	errno = ENOSYS;
965	return -1;
966	}
967
968	#endif
969
970	#if !HAVE_FDATASYNC
971	# define fdatasync fsync
972	#endif
973
974	#if !HAVE_READAHEAD
975	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
976
977	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
978	{
979	size_t todo = count;
980	dBUF;
981
982	while (todo > 0)
983	{
984	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
985
986	pread (fd, aio_buf, len, offset);
987	offset += len;
988	todo -= len;
989	}
990
991	errno = 0;
992	return count;
993	}
994
995	#endif
996
997	#if !HAVE_READDIR_R
998	# define readdir_r aio_readdir_r
999
1000	static mutex_t readdirlock = X_MUTEX_INIT;
1001
1002	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
1003	{
1004	X_DIRENT *e;
1005	int errorno;
1006
1007	X_LOCK (readdirlock);
1008
1009	e = readdir (dirp);
1010	errorno = errno;
1011
1012	if (e)
1013	{
1014	*res = ent;
1015	strcpy (ent->d_name, e->d_name);
1016	}
1017	else
1018	*res = 0;
1019
1020	X_UNLOCK (readdirlock);
1021
1022	errno = errorno;
1023	return e ? 0 : -1;
1024	}
1025	#endif
1026
1027	/* sendfile always needs emulation */
1028	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
1029	{
1030	ssize_t res;
1031
1032	if (!count)
1033	return 0;
1034
1035	#if HAVE_SENDFILE
1036	# if __linux
1037	res = sendfile (ofd, ifd, &offset, count);
1038
1039	# elif __freebsd
1040	/*
1041	* Of course, the freebsd sendfile is a dire hack with no thoughts
1042	* wasted on making it similar to other I/O functions.
1043	*/
1044	{
1045	off_t sbytes;
1046	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
1047
1048	if (res < 0 && sbytes)
1049	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
1050	res = sbytes;
1051	}
1052
1053	# elif __hpux
1054	res = sendfile (ofd, ifd, offset, count, 0, 0);
1055
1056	# elif __solaris
1057	{
1058	struct sendfilevec vec;
1059	size_t sbytes;
1060
1061	vec.sfv_fd = ifd;
1062	vec.sfv_flag = 0;
1063	vec.sfv_off = offset;
1064	vec.sfv_len = count;
1065
1066	res = sendfilev (ofd, &vec, 1, &sbytes);
1067
1068	if (res < 0 && sbytes)
1069	res = sbytes;
1070	}
1071
1072	# endif
1073	#else
1074	res = -1;
1075	errno = ENOSYS;
1076	#endif
1077
1078	if (res < 0
1079	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
1080	#if __solaris
1081	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
1082	#endif
1083	)
1084	)
1085	{
1086	/* emulate sendfile. this is a major pain in the ass */
1087	dBUF;
1088
1089	res = 0;
1090
1091	while (count)
1092	{
1093	ssize_t cnt;
1094
1095	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
1096
1097	if (cnt <= 0)
1098	{
1099	if (cnt && !res) res = -1;
1100	break;
1101	}
1102
1103	cnt = write (ofd, aio_buf, cnt);
1104
1105	if (cnt <= 0)
1106	{
1107	if (cnt && !res) res = -1;
1108	break;
1109	}
1110
1111	offset += cnt;
1112	res += cnt;
1113	count -= cnt;
1114	}
1115	}
1116
1117	return res;
1118	}
1119
1120	/* read a full directory */
1121	static void scandir_ (aio_req req, worker *self)
1122	{
1123	DIR *dirp;
1124	union
1125	{
1126	X_DIRENT d;
1127	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
1128	} *u;
1129	X_DIRENT *entp;
1130	char *name, *names;
1131	int memlen = 4096;
1132	int memofs = 0;
1133	int res = 0;
1134
1135	X_LOCK (wrklock);
1136	self->dirp = dirp = opendir (req->ptr1);
1137	self->dbuf = u = malloc (sizeof (*u));
1138	req->flags |= FLAG_PTR2_FREE;
1139	req->ptr2 = names = malloc (memlen);
1140	X_UNLOCK (wrklock);
1141
1142	if (dirp && u && names)
1143	for (;;)
1144	{
1145	errno = 0;
1146	readdir_r (dirp, &u->d, &entp);
1147
1148	if (!entp)
1149	break;
1150
1151	name = entp->d_name;
1152
1153	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
1154	{
1155	int len = strlen (name) + 1;
1156
1157	res++;
1158
1159	while (memofs + len > memlen)
1160	{
1161	memlen *= 2;
1162	X_LOCK (wrklock);
1163	req->ptr2 = names = realloc (names, memlen);
1164	X_UNLOCK (wrklock);
1165
1166	if (!names)
1167	break;
1168	}
1169
1170	memcpy (names + memofs, name, len);
1171	memofs += len;
1172	}
1173	}
1174
1175	if (errno)
1176	res = -1;
1177
1178	req->result = res;
1179	}	1020	}
1180		1021
1181	/*****************************************************************************/	1022	/*****************************************************************************/
1182		1023
1183	X_THREAD_PROC (aio_proc)	1024	XS(boot_IO__AIO) ecb_cold;
1184	{
1185	{//D
1186	aio_req req;
1187	struct timespec ts;
1188	worker *self = (worker *)thr_arg;
1189		1025
1190	/* try to distribute timeouts somewhat randomly */
1191	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
1192
1193	for (;;)
1194	{
1195	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1196
1197	X_LOCK (reqlock);
1198
1199	for (;;)
1200	{
1201	self->req = req = reqq_shift (&req_queue);
1202
1203	if (req)
1204	break;
1205
1206	++idle;
1207
1208	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
1209	== ETIMEDOUT)
1210	{
1211	if (idle > max_idle)
1212	{
1213	--idle;
1214	X_UNLOCK (reqlock);
1215	X_LOCK (wrklock);
1216	--started;
1217	X_UNLOCK (wrklock);
1218	goto quit;
1219	}
1220
1221	/* we are allowed to idle, so do so without any timeout */
1222	X_COND_WAIT (reqwait, reqlock);
1223	ts.tv_sec = time (0) + IDLE_TIMEOUT;
1224	}
1225
1226	--idle;
1227	}
1228
1229	--nready;
1230
1231	X_UNLOCK (reqlock);
1232
1233	errno = 0; /* strictly unnecessary */
1234
1235	if (!(req->flags & FLAG_CANCELLED))
1236	switch (req->type)
1237	{
1238	case REQ_READ: req->result = req->offs >= 0
1239	? pread (req->int1, req->ptr1, req->size, req->offs)
1240	: read (req->int1, req->ptr1, req->size); break;
1241	case REQ_WRITE: req->result = req->offs >= 0
1242	? pwrite (req->int1, req->ptr1, req->size, req->offs)
1243	: write (req->int1, req->ptr1, req->size); break;
1244
1245	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
1246	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
1247
1248	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
1249	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
1250	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
1251
1252	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
1253	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
1254	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
1255	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
1256	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
1257	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
1258
1259	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
1260	case REQ_CLOSE: req->result = PerlIO_close ((PerlIO *)req->ptr1); break;
1261	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
1262	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
1263	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
1264	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
1265	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
1266	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
1267	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
1268	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
1269
1270	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
1271	case REQ_FSYNC: req->result = fsync (req->int1); break;
1272	case REQ_READDIR: scandir_ (req, self); break;
1273
1274	case REQ_BUSY:
1275	#ifdef _WIN32
1276	Sleep (req->nv1 * 1000.);
1277	#else
1278	{
1279	struct timeval tv;
1280
1281	tv.tv_sec = req->nv1;
1282	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
1283
1284	req->result = select (0, 0, 0, 0, &tv);
1285	}
1286	#endif
1287	break;
1288
1289	case REQ_UTIME:
1290	case REQ_FUTIME:
1291	{
1292	struct timeval tv[2];
1293	struct timeval *times;
1294
1295	if (req->nv1 != -1. || req->nv2 != -1.)
1296	{
1297	tv[0].tv_sec = req->nv1;
1298	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
1299	tv[1].tv_sec = req->nv2;
1300	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
1301
1302	times = tv;
1303	}
1304	else
1305	times = 0;
1306
1307
1308	req->result = req->type == REQ_FUTIME
1309	? futimes (req->int1, times)
1310	: utimes (req->ptr1, times);
1311	}
1312
1313	case REQ_GROUP:
1314	case REQ_NOP:
1315	break;
1316
1317	case REQ_QUIT:
1318	goto quit;
1319
1320	default:
1321	req->result = -1;
1322	break;
1323	}
1324
1325	req->errorno = errno;
1326
1327	X_LOCK (reslock);
1328
1329	++npending;
1330
1331	if (!reqq_push (&res_queue, req))
1332	{
1333	/* write a dummy byte to the pipe so fh becomes ready */
1334	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
1335
1336	/* optionally signal the main thread asynchronously */
1337	if (main_sig)
1338	pthread_kill (main_tid, main_sig);
1339	}
1340
1341	self->req = 0;
1342	worker_clear (self);
1343
1344	X_UNLOCK (reslock);
1345	}
1346
1347	quit:
1348	X_LOCK (wrklock);
1349	worker_free (self);
1350	X_UNLOCK (wrklock);
1351
1352	return 0;
1353	}//D
1354	}
1355
1356	/*****************************************************************************/
1357
1358	static void atfork_prepare (void)
1359	{
1360	X_LOCK (wrklock);
1361	X_LOCK (reqlock);
1362	X_LOCK (reslock);
1363	#if !HAVE_PREADWRITE
1364	X_LOCK (preadwritelock);
1365	#endif
1366	#if !HAVE_READDIR_R
1367	X_LOCK (readdirlock);
1368	#endif
1369	}
1370
1371	static void atfork_parent (void)
1372	{
1373	#if !HAVE_READDIR_R
1374	X_UNLOCK (readdirlock);
1375	#endif
1376	#if !HAVE_PREADWRITE
1377	X_UNLOCK (preadwritelock);
1378	#endif
1379	X_UNLOCK (reslock);
1380	X_UNLOCK (reqlock);
1381	X_UNLOCK (wrklock);
1382	}
1383
1384	static void atfork_child (void)
1385	{
1386	aio_req prv;
1387
1388	while (prv = reqq_shift (&req_queue))
1389	req_destroy (prv);
1390
1391	while (prv = reqq_shift (&res_queue))
1392	req_destroy (prv);
1393
1394	while (wrk_first.next != &wrk_first)
1395	{
1396	worker *wrk = wrk_first.next;
1397
1398	if (wrk->req)
1399	req_destroy (wrk->req);
1400
1401	worker_clear (wrk);
1402	worker_free (wrk);
1403	}
1404
1405	started = 0;
1406	idle = 0;
1407	nreqs = 0;
1408	nready = 0;
1409	npending = 0;
1410
1411	create_respipe ();
1412
1413	atfork_parent ();
1414	}
1415
1416	#define dREQ \
1417	aio_req req; \
1418	int req_pri = next_pri; \
1419	next_pri = DEFAULT_PRI + PRI_BIAS; \
1420	\
1421	if (SvOK (callback) && !SvROK (callback)) \
1422	croak ("callback must be undef or of reference type"); \
1423	\
1424	Newz (0, req, 1, aio_cb); \
1425	if (!req) \
1426	croak ("out of memory during aio_req allocation"); \
1427	\
1428	req->callback = newSVsv (callback); \
1429	req->pri = req_pri
1430
1431	#define REQ_SEND \
1432	req_send (req); \
1433	\
1434	if (GIMME_V != G_VOID) \
1435	XPUSHs (req_sv (req, AIO_REQ_KLASS));
1436
1437	MODULE = IO::AIO PACKAGE = IO::AIO	1026	MODULE = IO::AIO PACKAGE = IO::AIO
1438		1027
1439	PROTOTYPES: ENABLE	1028	PROTOTYPES: ENABLE
1440		1029
1441	BOOT:	1030	BOOT:
1442	{	1031	{
		1032	static const struct {
		1033	const char *name;
		1034	IV iv;
		1035	} *civ, const_iv[] = {
		1036	# define const_niv(name, value) { # name, (IV) value },
		1037	# define const_iv(name) { # name, (IV) name },
		1038	# define const_eio(name) { # name, (IV) EIO_ ## name },
		1039
		1040	/* you have to re-run ./gendef0 after adding/removing any constants here */
		1041	/* the first block can be undef if missing */
		1042	const_iv (ENOSYS)
		1043	const_iv (EXDEV)
		1044	const_iv (EBADR)
		1045
		1046	/* for lseek */
		1047	const_iv (SEEK_DATA)
		1048	const_iv (SEEK_HOLE)
		1049
		1050	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		1051	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		1052	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		1053	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		1054	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		1055	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		1056
		1057	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		1058	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		1059	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		1060	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		1061	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		1062
		1063	/* the second block will be 0 when missing */
		1064	const_iv (O_ACCMODE)
		1065
		1066	const_iv (O_RDONLY)
		1067	const_iv (O_WRONLY)
		1068	const_iv (O_RDWR)
		1069	const_iv (O_CREAT)
		1070	const_iv (O_TRUNC)
		1071	const_iv (O_EXCL)
		1072	const_iv (O_APPEND)
		1073
		1074	const_iv (O_ASYNC)
		1075	const_iv (O_DIRECT)
		1076	const_iv (O_NOATIME)
		1077
		1078	const_iv (O_CLOEXEC)
		1079	const_iv (O_NOCTTY)
		1080	const_iv (O_NOFOLLOW)
		1081	const_iv (O_NONBLOCK)
		1082	const_iv (O_EXEC)
		1083	const_iv (O_SEARCH)
		1084	const_iv (O_DIRECTORY)
		1085	const_iv (O_DSYNC)
		1086	const_iv (O_RSYNC)
		1087	const_iv (O_SYNC)
		1088	const_iv (O_PATH)
		1089	const_iv (O_TMPFILE)
		1090	const_iv (O_TTY_INIT)
		1091
		1092	const_iv (S_IFIFO)
		1093	const_iv (S_IFCHR)
		1094	const_iv (S_IFBLK)
		1095	const_iv (S_IFLNK)
		1096	const_iv (S_IFREG)
		1097	const_iv (S_IFDIR)
		1098	const_iv (S_IFWHT)
		1099	const_iv (S_IFSOCK)
		1100	const_iv (S_IFMT)
		1101
		1102	const_iv (ST_RDONLY)
		1103	const_iv (ST_NOSUID)
		1104	const_iv (ST_NODEV)
		1105	const_iv (ST_NOEXEC)
		1106	const_iv (ST_SYNCHRONOUS)
		1107	const_iv (ST_MANDLOCK)
		1108	const_iv (ST_WRITE)
		1109	const_iv (ST_APPEND)
		1110	const_iv (ST_IMMUTABLE)
		1111	const_iv (ST_NOATIME)
		1112	const_iv (ST_NODIRATIME)
		1113	const_iv (ST_RELATIME)
		1114
		1115	const_iv (PROT_NONE)
		1116	const_iv (PROT_EXEC)
		1117	const_iv (PROT_READ)
		1118	const_iv (PROT_WRITE)
		1119
		1120	const_iv (MAP_PRIVATE)
		1121	const_iv (MAP_SHARED)
		1122	const_iv (MAP_FIXED)
		1123	const_iv (MAP_ANONYMOUS)
		1124
		1125	/* linuxish */
		1126	const_iv (MAP_LOCKED)
		1127	const_iv (MAP_NORESERVE)
		1128	const_iv (MAP_POPULATE)
		1129	const_iv (MAP_NONBLOCK)
		1130	const_iv (MAP_GROWSDOWN)
		1131	const_iv (MAP_32BIT)
		1132	const_iv (MAP_HUGETLB)
		1133	const_iv (MAP_STACK)
		1134
		1135	const_iv (MREMAP_MAYMOVE)
		1136	const_iv (MREMAP_FIXED)
		1137
		1138	const_iv (F_DUPFD_CLOEXEC)
		1139
		1140	const_iv (MSG_CMSG_CLOEXEC)
		1141	const_iv (SOCK_CLOEXEC)
		1142
		1143	const_iv (F_OFD_GETLK)
		1144	const_iv (F_OFD_SETLK)
		1145	const_iv (F_OFD_GETLKW)
		1146
		1147	const_iv (FIFREEZE)
		1148	const_iv (FITHAW)
		1149	const_iv (FITRIM)
		1150	const_iv (FICLONE)
		1151	const_iv (FICLONERANGE)
		1152	const_iv (FIDEDUPERANGE)
		1153
		1154	const_iv (FS_IOC_GETFLAGS)
		1155	const_iv (FS_IOC_SETFLAGS)
		1156	const_iv (FS_IOC_GETVERSION)
		1157	const_iv (FS_IOC_SETVERSION)
		1158	const_iv (FS_IOC_FIEMAP)
		1159	const_iv (FS_IOC_FSGETXATTR)
		1160	const_iv (FS_IOC_FSSETXATTR)
		1161	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1162	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1163	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1164
		1165	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1166
		1167	const_iv (FS_SECRM_FL)
		1168	const_iv (FS_UNRM_FL)
		1169	const_iv (FS_COMPR_FL)
		1170	const_iv (FS_SYNC_FL)
		1171	const_iv (FS_IMMUTABLE_FL)
		1172	const_iv (FS_APPEND_FL)
		1173	const_iv (FS_NODUMP_FL)
		1174	const_iv (FS_NOATIME_FL)
		1175	const_iv (FS_DIRTY_FL)
		1176	const_iv (FS_COMPRBLK_FL)
		1177	const_iv (FS_NOCOMP_FL)
		1178	const_iv (FS_ENCRYPT_FL)
		1179	const_iv (FS_BTREE_FL)
		1180	const_iv (FS_INDEX_FL)
		1181	const_iv (FS_JOURNAL_DATA_FL)
		1182	const_iv (FS_NOTAIL_FL)
		1183	const_iv (FS_DIRSYNC_FL)
		1184	const_iv (FS_TOPDIR_FL)
		1185	const_iv (FS_FL_USER_MODIFIABLE)
		1186
		1187	const_iv (FS_XFLAG_REALTIME)
		1188	const_iv (FS_XFLAG_PREALLOC)
		1189	const_iv (FS_XFLAG_IMMUTABLE)
		1190	const_iv (FS_XFLAG_APPEND)
		1191	const_iv (FS_XFLAG_SYNC)
		1192	const_iv (FS_XFLAG_NOATIME)
		1193	const_iv (FS_XFLAG_NODUMP)
		1194	const_iv (FS_XFLAG_RTINHERIT)
		1195	const_iv (FS_XFLAG_PROJINHERIT)
		1196	const_iv (FS_XFLAG_NOSYMLINKS)
		1197	const_iv (FS_XFLAG_EXTSIZE)
		1198	const_iv (FS_XFLAG_EXTSZINHERIT)
		1199	const_iv (FS_XFLAG_NODEFRAG)
		1200	const_iv (FS_XFLAG_FILESTREAM)
		1201	const_iv (FS_XFLAG_DAX)
		1202	const_iv (FS_XFLAG_HASATTR)
		1203
		1204	const_iv (FIEMAP_FLAG_SYNC)
		1205	const_iv (FIEMAP_FLAG_XATTR)
		1206	const_iv (FIEMAP_FLAGS_COMPAT)
		1207	const_iv (FIEMAP_EXTENT_LAST)
		1208	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1209	const_iv (FIEMAP_EXTENT_DELALLOC)
		1210	const_iv (FIEMAP_EXTENT_ENCODED)
		1211	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1212	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1213	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1214	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1215	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1216	const_iv (FIEMAP_EXTENT_MERGED)
		1217	const_iv (FIEMAP_EXTENT_SHARED)
		1218
		1219	const_iv (SPLICE_F_MOVE)
		1220	const_iv (SPLICE_F_NONBLOCK)
		1221	const_iv (SPLICE_F_MORE)
		1222	const_iv (SPLICE_F_GIFT)
		1223
		1224	const_iv (EFD_CLOEXEC)
		1225	const_iv (EFD_NONBLOCK)
		1226	const_iv (EFD_SEMAPHORE)
		1227
		1228	const_iv (CLOCK_REALTIME)
		1229	const_iv (CLOCK_MONOTONIC)
		1230	const_iv (CLOCK_BOOTTIME)
		1231	const_iv (CLOCK_REALTIME_ALARM)
		1232	const_iv (CLOCK_BOOTTIME_ALARM)
		1233
		1234	const_iv (TFD_NONBLOCK)
		1235	const_iv (TFD_CLOEXEC)
		1236
		1237	const_iv (TFD_TIMER_ABSTIME)
		1238	const_iv (TFD_TIMER_CANCEL_ON_SET)
		1239
		1240	/* these are libeio constants, and are independent of gendef0 */
		1241	const_eio (SEEK_SET)
		1242	const_eio (SEEK_CUR)
		1243	const_eio (SEEK_END)
		1244
		1245	const_eio (MCL_FUTURE)
		1246	const_eio (MCL_CURRENT)
		1247
		1248	const_eio (MS_ASYNC)
		1249	const_eio (MS_INVALIDATE)
		1250	const_eio (MS_SYNC)
		1251
		1252	const_eio (MT_MODIFY)
		1253
		1254	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1255	const_eio (SYNC_FILE_RANGE_WRITE)
		1256	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1257
		1258	const_eio (FALLOC_FL_KEEP_SIZE)
		1259	const_eio (FALLOC_FL_PUNCH_HOLE)
		1260	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1261	const_eio (FALLOC_FL_ZERO_RANGE)
		1262	const_eio (FALLOC_FL_INSERT_RANGE)
		1263	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1264
		1265	const_eio (RENAME_NOREPLACE)
		1266	const_eio (RENAME_EXCHANGE)
		1267	const_eio (RENAME_WHITEOUT)
		1268
		1269	const_eio (READDIR_DENTS)
		1270	const_eio (READDIR_DIRS_FIRST)
		1271	const_eio (READDIR_STAT_ORDER)
		1272	const_eio (READDIR_FOUND_UNKNOWN)
		1273
		1274	const_eio (DT_UNKNOWN)
		1275	const_eio (DT_FIFO)
		1276	const_eio (DT_CHR)
		1277	const_eio (DT_DIR)
		1278	const_eio (DT_BLK)
		1279	const_eio (DT_REG)
		1280	const_eio (DT_LNK)
		1281	const_eio (DT_SOCK)
		1282	const_eio (DT_WHT)
		1283	};
		1284
1443	stash = gv_stashpv ("IO::AIO", 1);	1285	aio_stash = gv_stashpv ("IO::AIO" , 1);
		1286	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		1287	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		1288	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
1444		1289
1445	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1290	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
1446	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1291	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
1447	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
1448	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
1449	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
1450	#ifdef _WIN32
1451	X_MUTEX_CHECK (wrklock);
1452	X_MUTEX_CHECK (reslock);
1453	X_MUTEX_CHECK (reqlock);
1454	X_MUTEX_CHECK (reqwait);
1455	X_MUTEX_CHECK (preadwritelock);
1456	X_MUTEX_CHECK (readdirlock);
1457		1292
1458	X_COND_CHECK (reqwait);	1293	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
1459	#else
1460	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
1461	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
1462	#endif
1463		1294
1464	create_respipe ();	1295	reinit ();
1465
1466	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1467	}	1296	}
1468		1297
1469	void	1298	void
		1299	reinit ()
		1300	PROTOTYPE:
		1301
		1302	void
1470	max_poll_reqs (int nreqs)	1303	max_poll_reqs (unsigned int nreqs)
1471	PROTOTYPE: $	1304	PROTOTYPE: $
1472	CODE:	1305	CODE:
1473	max_poll_reqs = nreqs;	1306	eio_set_max_poll_reqs (nreqs);
1474		1307
1475	void	1308	void
1476	max_poll_time (double nseconds)	1309	max_poll_time (double nseconds)
1477	PROTOTYPE: $	1310	PROTOTYPE: $
1478	CODE:	1311	CODE:
1479	max_poll_time = nseconds * AIO_TICKS;	1312	eio_set_max_poll_time (nseconds);
1480		1313
1481	void	1314	void
1482	min_parallel (int nthreads)	1315	min_parallel (unsigned int nthreads)
1483	PROTOTYPE: $
1484
1485	void
1486	max_parallel (int nthreads)
1487	PROTOTYPE: $
1488
1489	void
1490	max_idle (int nthreads)
1491	PROTOTYPE: $	1316	PROTOTYPE: $
1492	CODE:	1317	CODE:
1493	set_max_idle (nthreads);	1318	eio_set_min_parallel (nthreads);
1494		1319
1495	int	1320	void
1496	max_outstanding (int maxreqs)	1321	max_parallel (unsigned int nthreads)
1497	PROTOTYPE: $	1322	PROTOTYPE: $
1498	CODE:	1323	CODE:
1499	RETVAL = max_outstanding;	1324	eio_set_max_parallel (nthreads);
		1325
		1326	void
		1327	max_idle (unsigned int nthreads)
		1328	PROTOTYPE: $
		1329	CODE:
		1330	eio_set_max_idle (nthreads);
		1331
		1332	void
		1333	idle_timeout (unsigned int seconds)
		1334	PROTOTYPE: $
		1335	CODE:
		1336	eio_set_idle_timeout (seconds);
		1337
		1338	void
		1339	max_outstanding (unsigned int maxreqs)
		1340	PROTOTYPE: $
		1341	CODE:
1500	max_outstanding = maxreqs;	1342	max_outstanding = maxreqs;
1501	OUTPUT:
1502	RETVAL
1503		1343
1504	void	1344	void
1505	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)	1345	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
1506	PROTOTYPE: $$$;$
1507	PPCODE:	1346	PPCODE:
1508	{	1347	{
1509	dREQ;	1348	dREQ;
1510		1349
		1350	req->type = EIO_WD_OPEN;
		1351	req_set_path1 (req, pathname);
		1352
		1353	REQ_SEND;
		1354	}
		1355
		1356	void
		1357	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1358	PPCODE:
		1359	{
		1360	dREQ;
		1361
1511	req->type = REQ_OPEN;	1362	req->type = EIO_OPEN;
1512	req->sv1 = newSVsv (pathname);	1363	req_set_path1 (req, pathname);
1513	req->ptr1 = SvPVbyte_nolen (req->sv1);
1514	req->int1 = flags;	1364	req->int1 = flags;
1515	req->mode = mode;	1365	req->int2 = mode;
1516		1366
1517	REQ_SEND;	1367	REQ_SEND;
1518	}	1368	}
1519		1369
1520	void	1370	void
1521	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)	1371	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
1522	PROTOTYPE: $;$
1523	ALIAS:	1372	ALIAS:
1524	aio_fsync = REQ_FSYNC	1373	aio_fsync = EIO_FSYNC
1525	aio_fdatasync = REQ_FDATASYNC	1374	aio_fdatasync = EIO_FDATASYNC
		1375	aio_syncfs = EIO_SYNCFS
1526	PPCODE:	1376	PPCODE:
1527	{	1377	{
		1378	int fd = s_fileno_croak (fh, 0);
1528	dREQ;	1379	dREQ;
1529		1380
1530	req->type = ix;	1381	req->type = ix;
1531	req->sv1 = newSVsv (fh);	1382	req->sv1 = newSVsv (fh);
1532	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));	1383	req->int1 = fd;
1533		1384
1534	REQ_SEND (req);	1385	REQ_SEND;
1535	}	1386	}
1536		1387
1537	void	1388	void
		1389	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1390	PPCODE:
		1391	{
		1392	int fd = s_fileno_croak (fh, 0);
		1393	dREQ;
		1394
		1395	req->type = EIO_SYNC_FILE_RANGE;
		1396	req->sv1 = newSVsv (fh);
		1397	req->int1 = fd;
		1398	req->offs = offset;
		1399	req->size = nbytes;
		1400	req->int2 = flags;
		1401
		1402	REQ_SEND;
		1403	}
		1404
		1405	void
		1406	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1407	PPCODE:
		1408	{
		1409	int fd = s_fileno_croak (fh, 0);
		1410	dREQ;
		1411
		1412	req->type = EIO_FALLOCATE;
		1413	req->sv1 = newSVsv (fh);
		1414	req->int1 = fd;
		1415	req->int2 = mode;
		1416	req->offs = offset;
		1417	req->size = len;
		1418
		1419	REQ_SEND;
		1420	}
		1421
		1422	void
1538	aio_close (SV *fh, SV *callback=&PL_sv_undef)	1423	aio_close (SV *fh, SV *callback = &PL_sv_undef)
1539	PROTOTYPE: $;$
1540	PPCODE:	1424	PPCODE:
1541	{	1425	{
1542	PerlIO *io = IoIFP (sv_2io (fh));	1426	static int close_fd = -1; /* dummy fd to close fds via dup2 */
1543	int fd = PerlIO_fileno (io);	1427	int fd = s_fileno_croak (fh, 0);
1544
1545	if (fd < 0)
1546	croak ("aio_close called with fd-less filehandle");
1547
1548	PerlIO_binmode (io, 0, 0, 0);
1549
1550	{
1551	dREQ;	1428	dREQ;
1552		1429
		1430	if (expect_false (close_fd < 0))
		1431	{
		1432	int pipefd [2];
		1433
		1434	if (
		1435	#ifdef _WIN32
		1436	_pipe (pipefd, 1, _O_BINARY) < 0
		1437	#else
		1438	pipe (pipefd) < 0
		1439	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1440	#endif
		1441	|| close (pipefd [1]) < 0
		1442	)
		1443	abort (); /*D*/
		1444
		1445	close_fd = pipefd [0];
		1446	}
		1447
		1448	req->type = EIO_DUP2;
		1449	req->int1 = close_fd;
		1450	req->sv2 = newSVsv (fh);
		1451	req->int2 = fd;
		1452
		1453	REQ_SEND;
		1454	}
		1455
		1456	void
		1457	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1458	PPCODE:
		1459	{
		1460	int fd = s_fileno_croak (fh, 0);
		1461	dREQ;
		1462
1553	req->type = REQ_CLOSE;	1463	req->type = EIO_SEEK;
1554	req->sv1 = newSVsv (fh);	1464	req->sv1 = newSVsv (fh);
1555	req->ptr1 = (void *)io;	1465	req->int1 = fd;
		1466	req->offs = SvVAL64 (offset);
		1467	req->int2 = whence;
1556		1468
1557	REQ_SEND (req);	1469	REQ_SEND;
1558	}
1559	}	1470	}
1560		1471
1561	void	1472	void
1562	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)	1473	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback = &PL_sv_undef)
1563	ALIAS:	1474	ALIAS:
1564	aio_read = REQ_READ	1475	aio_read = EIO_READ
1565	aio_write = REQ_WRITE	1476	aio_write = EIO_WRITE
1566	PROTOTYPE: $$$$$;$
1567	PPCODE:	1477	PPCODE:
1568	{	1478	{
1569	STRLEN svlen;	1479	STRLEN svlen;
		1480	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
1570	char *svptr = SvPVbyte (data, svlen);	1481	char *svptr = SvPVbyte (data, svlen);
1571	UV len = SvUV (length);	1482	UV len = SvUV (length);
1572		1483
1573	SvUPGRADE (data, SVt_PV);
1574	SvPOK_on (data);
1575
1576	if (dataoffset < 0)	1484	if (dataoffset < 0)
1577	dataoffset += svlen;	1485	dataoffset += svlen;
1578		1486
1579	if (dataoffset < 0 || dataoffset > svlen)	1487	if (dataoffset < 0 || dataoffset > svlen)
1580	croak ("dataoffset outside of data scalar");	1488	croak ("dataoffset outside of data scalar");
1581		1489
1582	if (ix == REQ_WRITE)	1490	if (ix == EIO_WRITE)
1583	{	1491	{
1584	/* write: check length and adjust. */	1492	/* write: check length and adjust. */
1585	if (!SvOK (length) || len + dataoffset > svlen)	1493	if (!SvOK (length) || len + dataoffset > svlen)
1586	len = svlen - dataoffset;	1494	len = svlen - dataoffset;
1587	}	1495	}
1588	else	1496	else
1589	{	1497	{
1590	/* read: grow scalar as necessary */	1498	/* read: check type and grow scalar as necessary */
		1499	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
1591	svptr = SvGROW (data, len + dataoffset + 1);	1500	svptr = sv_grow (data, len + dataoffset + 1);
		1501	else if (SvCUR (data) < len + dataoffset)
		1502	croak ("length + dataoffset outside of scalar, and cannot grow");
1592	}	1503	}
1593
1594	if (len < 0)
1595	croak ("length must not be negative");
1596		1504
1597	{	1505	{
1598	dREQ;	1506	dREQ;
1599		1507
1600	req->type = ix;	1508	req->type = ix;
1601	req->sv1 = newSVsv (fh);	1509	req->sv1 = newSVsv (fh);
1602	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1510	req->int1 = fd;
1603	: IoOFP (sv_2io (fh)));
1604	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1511	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1605	req->size = len;	1512	req->size = len;
1606	req->sv2 = SvREFCNT_inc (data);	1513	req->sv2 = SvREFCNT_inc (data);
1607	req->ptr1 = (char *)svptr + dataoffset;	1514	req->ptr2 = (char *)svptr + dataoffset;
1608	req->stroffset = dataoffset;	1515	req->stroffset = dataoffset;
1609		1516
1610	if (!SvREADONLY (data))	1517	if (!SvREADONLY (data))
1611	{	1518	{
1612	SvREADONLY_on (data);	1519	SvREADONLY_on (data);
…		…
1616	REQ_SEND;	1523	REQ_SEND;
1617	}	1524	}
1618	}	1525	}
1619		1526
1620	void	1527	void
1621	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)	1528	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, SV *callback = &PL_sv_undef)
1622	PROTOTYPE: $$;$	1529	ALIAS:
		1530	aio_ioctl = EIO_IOCTL
		1531	aio_fcntl = EIO_FCNTL
1623	PPCODE:	1532	PPCODE:
1624	{	1533	{
1625	SV *data;	1534	int fd = s_fileno_croak (fh, 0);
1626	dREQ;	1535	char *svptr;
1627		1536
1628	data = newSV (NAME_MAX);	1537	if (SvPOK (arg) || !SvNIOK (arg))
1629	SvPOK_on (data);
1630
1631	req->type = REQ_READLINK;
1632	req->sv1 = newSVsv (path);
1633	req->ptr2 = SvPVbyte_nolen (req->sv1);
1634	req->sv2 = data;
1635	req->ptr1 = SvPVbyte_nolen (data);
1636
1637	REQ_SEND;
1638	}
1639
1640	void
1641	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1642	PROTOTYPE: $$$$;$
1643	PPCODE:
1644	{
1645	dREQ;
1646
1647	req->type = REQ_SENDFILE;
1648	req->sv1 = newSVsv (out_fh);
1649	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1650	req->sv2 = newSVsv (in_fh);
1651	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1652	req->offs = SvVAL64 (in_offset);
1653	req->size = length;
1654
1655	REQ_SEND;
1656	}
1657
1658	void
1659	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1660	PROTOTYPE: $$$;$
1661	PPCODE:
1662	{
1663	dREQ;
1664
1665	req->type = REQ_READAHEAD;
1666	req->sv1 = newSVsv (fh);
1667	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1668	req->offs = SvVAL64 (offset);
1669	req->size = length;
1670
1671	REQ_SEND;
1672	}
1673
1674	void
1675	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1676	ALIAS:
1677	aio_stat = REQ_STAT
1678	aio_lstat = REQ_LSTAT
1679	PPCODE:
1680	{
1681	dREQ;
1682
1683	req->ptr2 = malloc (sizeof (Stat_t));
1684	if (!req->ptr2)
1685	{	1538	{
1686	req_destroy (req);	1539	STRLEN svlen;
1687	croak ("out of memory during aio_stat statdata allocation");	1540	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
1688	}	1541	#ifdef IOCPARM_LEN
		1542	STRLEN need = IOCPARM_LEN (request);
		1543	#else
		1544	STRLEN need = 256;
		1545	#endif
1689		1546
1690	req->flags |= FLAG_PTR2_FREE;	1547	if (svlen < need)
1691	req->sv1 = newSVsv (fh_or_path);	1548	svptr = SvGROW (arg, need);
1692
1693	if (SvPOK (fh_or_path))
1694	{
1695	req->type = ix;
1696	req->ptr1 = SvPVbyte_nolen (req->sv1);
1697	}	1549	}
1698	else	1550	else
		1551	svptr = (char *)SvIV (arg);
		1552
1699	{	1553	{
		1554	dREQ;
		1555
1700	req->type = REQ_FSTAT;	1556	req->type = ix;
1701	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1557	req->sv1 = newSVsv (fh);
		1558	req->int1 = fd;
		1559	req->int2 = (long)request;
		1560	req->sv2 = SvREFCNT_inc (arg);
		1561	req->ptr2 = svptr;
		1562
		1563	REQ_SEND;
1702	}	1564	}
		1565	}
		1566
		1567	void
		1568	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1569	ALIAS:
		1570	aio_readlink = EIO_READLINK
		1571	aio_realpath = EIO_REALPATH
		1572	PPCODE:
		1573	{
		1574	dREQ;
		1575
		1576	req->type = ix;
		1577	req_set_path1 (req, pathname);
1703		1578
1704	REQ_SEND;	1579	REQ_SEND;
1705	}	1580	}
1706		1581
1707	void	1582	void
		1583	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1584	PPCODE:
		1585	{
		1586	int ifd = s_fileno_croak (in_fh , 0);
		1587	int ofd = s_fileno_croak (out_fh, 1);
		1588	dREQ;
		1589
		1590	req->type = EIO_SENDFILE;
		1591	req->sv1 = newSVsv (out_fh);
		1592	req->int1 = ofd;
		1593	req->sv2 = newSVsv (in_fh);
		1594	req->int2 = ifd;
		1595	req->offs = in_offset;
		1596	req->size = length;
		1597
		1598	REQ_SEND;
		1599	}
		1600
		1601	void
		1602	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1603	PPCODE:
		1604	{
		1605	int fd = s_fileno_croak (fh, 0);
		1606	dREQ;
		1607
		1608	req->type = EIO_READAHEAD;
		1609	req->sv1 = newSVsv (fh);
		1610	req->int1 = fd;
		1611	req->offs = offset;
		1612	req->size = length;
		1613
		1614	REQ_SEND;
		1615	}
		1616
		1617	void
		1618	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
		1619	ALIAS:
		1620	aio_stat = EIO_STAT
		1621	aio_lstat = EIO_LSTAT
		1622	aio_statvfs = EIO_STATVFS
		1623	PPCODE:
		1624	{
		1625	dREQ;
		1626
		1627	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1628
		1629	REQ_SEND;
		1630	}
		1631
		1632	void
		1633	stat_xtime ()
		1634	ALIAS:
		1635	stat_atime = 1
		1636	stat_mtime = 2
		1637	stat_ctime = 4
		1638	stat_xtime = 7
		1639	PPCODE:
		1640	EXTEND (SP, 3);
		1641	if (ix & 1) PUSHs (newSVnv (PL_statcache.st_atime + 1e-9 * ATIMENSEC));
		1642	if (ix & 2) PUSHs (newSVnv (PL_statcache.st_mtime + 1e-9 * MTIMENSEC));
		1643	if (ix & 4) PUSHs (newSVnv (PL_statcache.st_ctime + 1e-9 * CTIMENSEC));
		1644
		1645	void
		1646	stat_xtimensec ()
		1647	ALIAS:
		1648	stat_atimensec = 1
		1649	stat_mtimensec = 2
		1650	stat_ctimensec = 4
		1651	stat_xtimensec = 7
		1652	PPCODE:
		1653	EXTEND (SP, 3);
		1654	if (ix & 1) PUSHs (newSViv (ATIMENSEC));
		1655	if (ix & 2) PUSHs (newSViv (MTIMENSEC));
		1656	if (ix & 4) PUSHs (newSViv (CTIMENSEC));
		1657
		1658	UV
		1659	major (UV dev)
		1660	ALIAS:
		1661	minor = 1
		1662	CODE:
		1663	RETVAL = ix ? minor (dev) : major (dev);
		1664	OUTPUT:
		1665	RETVAL
		1666
		1667	UV
		1668	makedev (UV maj, UV min)
		1669	CODE:
		1670	RETVAL = makedev (maj, min);
		1671	OUTPUT:
		1672	RETVAL
		1673
		1674	void
1708	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)	1675	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
1709	PPCODE:	1676	PPCODE:
1710	{	1677	{
1711	dREQ;	1678	dREQ;
1712		1679
1713	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;	1680	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
1714	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;	1681	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
1715	req->sv1 = newSVsv (fh_or_path);	1682	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
1716
1717	if (SvPOK (fh_or_path))
1718	{
1719	req->type = REQ_UTIME;
1720	req->ptr1 = SvPVbyte_nolen (req->sv1);
1721	}
1722	else
1723	{
1724	req->type = REQ_FUTIME;
1725	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1726	}
1727		1683
1728	REQ_SEND;	1684	REQ_SEND;
1729	}	1685	}
1730		1686
1731	void	1687	void
1732	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)	1688	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
1733	PPCODE:	1689	PPCODE:
1734	{	1690	{
1735	dREQ;	1691	dREQ;
1736		1692
1737	req->sv1 = newSVsv (fh_or_path);
1738	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;	1693	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1739		1694	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
1740	if (SvPOK (fh_or_path))
1741	{
1742	req->type = REQ_TRUNCATE;
1743	req->ptr1 = SvPVbyte_nolen (req->sv1);
1744	}
1745	else
1746	{
1747	req->type = REQ_FTRUNCATE;
1748	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1749	}
1750		1695
1751	REQ_SEND;	1696	REQ_SEND;
1752	}	1697	}
1753		1698
1754	void	1699	void
1755	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)	1700	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
1756	PPCODE:	1701	PPCODE:
1757	{	1702	{
1758	dREQ;	1703	dREQ;
1759		1704
1760	req->mode = mode;	1705	req->int2 = mode;
1761	req->sv1 = newSVsv (fh_or_path);	1706	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
1762
1763	if (SvPOK (fh_or_path))
1764	{
1765	req->type = REQ_CHMOD;
1766	req->ptr1 = SvPVbyte_nolen (req->sv1);
1767	}
1768	else
1769	{
1770	req->type = REQ_FCHMOD;
1771	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1772	}
1773		1707
1774	REQ_SEND;	1708	REQ_SEND;
1775	}	1709	}
1776		1710
1777	void	1711	void
1778	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)	1712	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
1779	PPCODE:	1713	PPCODE:
1780	{	1714	{
1781	dREQ;	1715	dREQ;
1782		1716
1783	req->int2 = SvOK (uid) ? SvIV (uid) : -1;	1717	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
1784	req->int3 = SvOK (gid) ? SvIV (gid) : -1;	1718	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
1785	req->sv1 = newSVsv (fh_or_path);	1719	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
1786
1787	if (SvPOK (fh_or_path))
1788	{
1789	req->type = REQ_CHOWN;
1790	req->ptr1 = SvPVbyte_nolen (req->sv1);
1791	}
1792	else
1793	{
1794	req->type = REQ_FCHOWN;
1795	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1796	}
1797		1720
1798	REQ_SEND;	1721	REQ_SEND;
1799	}	1722	}
1800		1723
1801	void	1724	void
		1725	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1726	PPCODE:
		1727	{
		1728	dREQ;
		1729
		1730	req->type = EIO_READDIR;
		1731	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1732
		1733	if (flags & EIO_READDIR_DENTS)
		1734	req->int1 |= EIO_READDIR_CUSTOM2;
		1735
		1736	req_set_path1 (req, pathname);
		1737
		1738	REQ_SEND;
		1739	}
		1740
		1741	void
		1742	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1743	PPCODE:
		1744	{
		1745	dREQ;
		1746
		1747	req->type = EIO_MKDIR;
		1748	req->int2 = mode;
		1749	req_set_path1 (req, pathname);
		1750
		1751	REQ_SEND;
		1752	}
		1753
		1754	void
1802	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)	1755	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
1803	ALIAS:	1756	ALIAS:
1804	aio_unlink = REQ_UNLINK	1757	aio_unlink = EIO_UNLINK
1805	aio_rmdir = REQ_RMDIR	1758	aio_rmdir = EIO_RMDIR
1806	aio_readdir = REQ_READDIR	1759	aio_readdir = EIO_READDIR
1807	PPCODE:	1760	PPCODE:
1808	{	1761	{
1809	dREQ;	1762	dREQ;
1810		1763
1811	req->type = ix;	1764	req->type = ix;
1812	req->sv1 = newSVsv (pathname);	1765	req_set_path1 (req, pathname);
1813	req->ptr1 = SvPVbyte_nolen (req->sv1);
1814		1766
1815	REQ_SEND;	1767	REQ_SEND;
1816	}	1768	}
1817		1769
1818	void	1770	void
1819	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
1820	PPCODE:
1821	{
1822	dREQ;
1823
1824	req->type = REQ_MKDIR;
1825	req->sv1 = newSVsv (pathname);
1826	req->ptr1 = SvPVbyte_nolen (req->sv1);
1827	req->mode = mode;
1828
1829	REQ_SEND;
1830	}
1831
1832	void
1833	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)	1771	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1834	ALIAS:	1772	ALIAS:
1835	aio_link = REQ_LINK	1773	aio_link = EIO_LINK
1836	aio_symlink = REQ_SYMLINK	1774	aio_symlink = EIO_SYMLINK
1837	aio_rename = REQ_RENAME	1775	aio_rename = EIO_RENAME
1838	PPCODE:	1776	PPCODE:
1839	{	1777	{
		1778	eio_wd wd2 = 0;
1840	dREQ;	1779	dREQ;
1841		1780
1842	req->type = ix;	1781	req->type = ix;
1843	req->sv2 = newSVsv (oldpath);	1782	req_set_path1 (req, oldpath);
1844	req->ptr2 = SvPVbyte_nolen (req->sv2);	1783	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1845	req->sv1 = newSVsv (newpath);	1784	req->int3 = (long)wd2;
1846	req->ptr1 = SvPVbyte_nolen (req->sv1);
1847		1785
1848	REQ_SEND;	1786	REQ_SEND;
1849	}	1787	}
1850		1788
1851	void	1789	void
1852	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)	1790	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1853	PPCODE:	1791	PPCODE:
1854	{	1792	{
		1793	eio_wd wd2 = 0;
1855	dREQ;	1794	dREQ;
1856		1795
1857	req->type = REQ_MKNOD;	1796	req->type = EIO_RENAME;
1858	req->sv1 = newSVsv (pathname);	1797	req_set_path1 (req, oldpath);
1859	req->ptr1 = SvPVbyte_nolen (req->sv1);	1798	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1860	req->mode = (mode_t)mode;	1799	req->int2 = flags;
1861	req->offs = dev;	1800	req->int3 = (long)wd2;
1862		1801
1863	REQ_SEND;	1802	REQ_SEND;
1864	}	1803	}
1865		1804
1866	void	1805	void
1867	aio_busy (double delay, SV *callback=&PL_sv_undef)	1806	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
1868	PPCODE:	1807	PPCODE:
1869	{	1808	{
1870	dREQ;	1809	dREQ;
		1810
		1811	req->type = EIO_MKNOD;
		1812	req->int2 = (mode_t)mode;
		1813	req->offs = dev;
		1814	req_set_path1 (req, pathname);
		1815
		1816	REQ_SEND;
		1817	}
1871		1818
		1819	void
		1820	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1821	ALIAS:
		1822	aio_mtouch = EIO_MTOUCH
		1823	aio_msync = EIO_MSYNC
		1824	PPCODE:
		1825	{
		1826	STRLEN svlen;
		1827	char *svptr = SvPVbyte (data, svlen);
		1828	UV len = SvUV (length);
		1829
		1830	if (flags < 0)
		1831	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
		1832
		1833	if (offset < 0)
		1834	offset += svlen;
		1835
		1836	if (offset < 0 || offset > svlen)
		1837	croak ("offset outside of scalar");
		1838
		1839	if (!SvOK (length) || len + offset > svlen)
		1840	len = svlen - offset;
		1841
		1842	{
		1843	dREQ;
		1844
		1845	req->type = ix;
		1846	req->sv2 = SvREFCNT_inc (data);
		1847	req->ptr2 = (char *)svptr + offset;
		1848	req->size = len;
		1849	req->int1 = flags;
		1850
		1851	REQ_SEND;
		1852	}
		1853	}
		1854
		1855	void
		1856	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1857	PPCODE:
		1858	{
		1859	STRLEN svlen;
		1860	char *svptr = SvPVbyte (data, svlen);
		1861	UV len = SvUV (length);
		1862
		1863	if (offset < 0)
		1864	offset += svlen;
		1865
		1866	if (offset < 0 || offset > svlen)
		1867	croak ("offset outside of scalar");
		1868
		1869	if (!SvOK (length) || len + offset > svlen)
		1870	len = svlen - offset;
		1871
		1872	{
		1873	dREQ;
		1874
		1875	req->type = EIO_MLOCK;
		1876	req->sv2 = SvREFCNT_inc (data);
		1877	req->ptr2 = (char *)svptr + offset;
		1878	req->size = len;
		1879
		1880	REQ_SEND;
		1881	}
		1882	}
		1883
		1884	void
		1885	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1886	PPCODE:
		1887	{
		1888	dREQ;
		1889
		1890	req->type = EIO_MLOCKALL;
		1891	req->int1 = flags;
		1892
		1893	REQ_SEND;
		1894	}
		1895
		1896	void
		1897	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1898	PPCODE:
		1899	{
		1900	int fd = s_fileno_croak (fh, 0);
		1901	dREQ;
		1902
		1903	req->type = EIO_CUSTOM;
		1904	req->sv1 = newSVsv (fh);
		1905	req->int1 = fd;
		1906
		1907	req->feed = fiemap;
		1908	#if HAVE_FIEMAP
		1909	/* keep our fingers crossed that the next two types are 64 bit */
		1910	req->offs = start;
		1911	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1912	req->int2 = flags;
		1913	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1914	#endif
		1915
		1916	REQ_SEND;
		1917	}
		1918
		1919	void
		1920	aio_slurp (SV *pathname, off_t offset, UV length, SV8 *data, SV *callback = &PL_sv_undef)
		1921	PPCODE:
		1922	{
		1923	char *svptr = 0;
		1924
		1925	sv_clear_foreign (data);
		1926
		1927	if (length) /* known length, directly read into scalar */
		1928	{
		1929	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
		1930	svptr = sv_grow (data, length + 1);
		1931	else if (SvCUR (data) < length)
		1932	croak ("length outside of scalar, and cannot grow");
		1933	else
		1934	svptr = SvPVbyte_nolen (data);
		1935	}
		1936
		1937	{
		1938	dREQ;
		1939
		1940	req->type = EIO_SLURP;
		1941	req_set_path1 (req, pathname);
		1942	req->offs = offset;
		1943	req->size = length;
		1944	req->sv2 = SvREFCNT_inc (data);
		1945	req->ptr2 = svptr;
		1946
		1947	if (!SvREADONLY (data))
		1948	{
		1949	SvREADONLY_on (data);
		1950	req->flags |= FLAG_SV2_RO_OFF;
		1951	}
		1952
		1953	REQ_SEND;
		1954	}
		1955	}
		1956
		1957	void
		1958	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1959	PPCODE:
		1960	{
		1961	dREQ;
		1962
1872	req->type = REQ_BUSY;	1963	req->type = EIO_BUSY;
1873	req->nv1 = delay < 0. ? 0. : delay;	1964	req->nv1 = delay < 0. ? 0. : delay;
1874		1965
1875	REQ_SEND;	1966	REQ_SEND;
1876	}	1967	}
1877		1968
1878	void	1969	void
1879	aio_group (SV *callback=&PL_sv_undef)	1970	aio_group (SV *callback = &PL_sv_undef)
1880	PROTOTYPE: ;$
1881	PPCODE:	1971	PPCODE:
1882	{	1972	{
1883	dREQ;	1973	dREQ;
1884		1974
1885	req->type = REQ_GROUP;	1975	req->type = EIO_GROUP;
1886		1976
		1977	PUTBACK;
1887	req_send (req);	1978	req_submit (req);
		1979	SPAGAIN;
		1980
1888	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1981	XPUSHs (req_sv (req, aio_grp_stash));
1889	}	1982	}
1890		1983
1891	void	1984	void
1892	aio_nop (SV *callback=&PL_sv_undef)	1985	aio_nop (SV *callback = &PL_sv_undef)
		1986	ALIAS:
		1987	aio_nop = EIO_NOP
		1988	aio_sync = EIO_SYNC
1893	PPCODE:	1989	PPCODE:
1894	{	1990	{
1895	dREQ;	1991	dREQ;
1896		1992
1897	req->type = REQ_NOP;	1993	req->type = ix;
1898		1994
1899	REQ_SEND;	1995	REQ_SEND;
1900	}	1996	}
1901		1997
1902	int	1998	int
1903	aioreq_pri (int pri = 0)	1999	aioreq_pri (int pri = NO_INIT)
1904	PROTOTYPE: ;$
1905	CODE:	2000	CODE:
1906	RETVAL = next_pri - PRI_BIAS;	2001	RETVAL = next_pri;
1907	if (items > 0)	2002	if (items > 0)
1908	{	2003	{
1909	if (pri < PRI_MIN) pri = PRI_MIN;	2004	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
1910	if (pri > PRI_MAX) pri = PRI_MAX;	2005	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
1911	next_pri = pri + PRI_BIAS;	2006	next_pri = pri;
1912	}	2007	}
1913	OUTPUT:	2008	OUTPUT:
1914	RETVAL	2009	RETVAL
1915		2010
1916	void	2011	void
1917	aioreq_nice (int nice = 0)	2012	aioreq_nice (int nice = 0)
1918	CODE:	2013	CODE:
1919	nice = next_pri - nice;	2014	nice = next_pri - nice;
1920	if (nice < PRI_MIN) nice = PRI_MIN;	2015	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
1921	if (nice > PRI_MAX) nice = PRI_MAX;	2016	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
1922	next_pri = nice + PRI_BIAS;	2017	next_pri = nice;
1923		2018
1924	void	2019	void
1925	flush ()	2020	flush ()
1926	PROTOTYPE:
1927	CODE:	2021	CODE:
1928	while (nreqs)	2022	while (eio_nreqs ())
1929	{	2023	{
1930	poll_wait ();	2024	poll_wait ();
1931	poll_cb ();	2025	poll_cb ();
1932	}	2026	}
1933		2027
1934	int	2028	int
1935	poll()	2029	poll ()
1936	PROTOTYPE:
1937	CODE:	2030	CODE:
1938	poll_wait ();	2031	poll_wait ();
1939	RETVAL = poll_cb ();	2032	RETVAL = poll_cb ();
1940	OUTPUT:	2033	OUTPUT:
1941	RETVAL	2034	RETVAL
1942		2035
1943	int	2036	int
1944	poll_fileno()	2037	poll_fileno ()
1945	PROTOTYPE:
1946	CODE:	2038	CODE:
1947	RETVAL = respipe [0];	2039	RETVAL = s_epipe_fd (&respipe);
1948	OUTPUT:	2040	OUTPUT:
1949	RETVAL	2041	RETVAL
1950		2042
1951	int	2043	int
1952	poll_cb(...)	2044	poll_cb (...)
1953	PROTOTYPE:	2045	PROTOTYPE:
1954	CODE:	2046	CODE:
1955	RETVAL = poll_cb ();	2047	RETVAL = poll_cb ();
1956	OUTPUT:	2048	OUTPUT:
1957	RETVAL	2049	RETVAL
1958		2050
1959	void	2051	void
1960	poll_wait()	2052	poll_wait ()
1961	PROTOTYPE:
1962	CODE:	2053	CODE:
1963	poll_wait ();	2054	poll_wait ();
1964		2055
1965	void
1966	setsig (int signum = SIGIO)
1967	PROTOTYPE: ;$
1968	CODE:
1969	{
1970	if (block_sig_level)
1971	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
1972
1973	X_LOCK (reslock);
1974	main_tid = pthread_self ();
1975	main_sig = signum;
1976	X_UNLOCK (reslock);
1977
1978	if (main_sig && npending)
1979	pthread_kill (main_tid, main_sig);
1980	}
1981
1982	void
1983	aio_block (SV *cb)
1984	PROTOTYPE: &
1985	PPCODE:
1986	{
1987	int count;
1988
1989	block_sig ();
1990	PUSHMARK (SP);
1991	PUTBACK;
1992	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
1993	SPAGAIN;
1994	unblock_sig ();
1995
1996	if (SvTRUE (ERRSV))
1997	croak (0);
1998
1999	XSRETURN (count);
2000	}
2001
2002	int	2056	int
2003	nreqs()	2057	nreqs ()
2004	PROTOTYPE:
2005	CODE:	2058	CODE:
2006	RETVAL = nreqs;	2059	RETVAL = eio_nreqs ();
2007	OUTPUT:	2060	OUTPUT:
2008	RETVAL	2061	RETVAL
2009		2062
2010	int	2063	int
2011	nready()	2064	nready ()
2012	PROTOTYPE:
2013	CODE:	2065	CODE:
2014	RETVAL = get_nready ();	2066	RETVAL = eio_nready ();
2015	OUTPUT:	2067	OUTPUT:
2016	RETVAL	2068	RETVAL
2017		2069
2018	int	2070	int
2019	npending()	2071	npending ()
2020	PROTOTYPE:
2021	CODE:	2072	CODE:
2022	RETVAL = get_npending ();	2073	RETVAL = eio_npending ();
2023	OUTPUT:	2074	OUTPUT:
2024	RETVAL	2075	RETVAL
2025		2076
2026	int	2077	int
2027	nthreads()	2078	nthreads ()
2028	PROTOTYPE:
2029	CODE:	2079	CODE:
2030	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);	2080	RETVAL = eio_nthreads ();
2031	RETVAL = started;
2032	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
2033	OUTPUT:	2081	OUTPUT:
2034	RETVAL	2082	RETVAL
2035		2083
		2084	int
		2085	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		2086	CODE:
		2087	RETVAL = posix_fadvise (fh, offset, length, advice);
		2088	OUTPUT:
		2089	RETVAL
		2090
		2091	IV
		2092	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		2093	CODE:
		2094	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		2095	OUTPUT:
		2096	RETVAL
		2097
		2098	void
		2099	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		2100	PPCODE:
		2101	sv_clear_foreign (scalar);
		2102	{
		2103	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		2104	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		2105	if (addr == (void *)-1)
		2106	XSRETURN_NO;
		2107
		2108	sv_set_foreign (scalar, &mmap_vtbl, addr, length);
		2109
		2110	if (!(prot & PROT_WRITE))
		2111	SvREADONLY_on (scalar);
		2112
		2113	XSRETURN_YES;
		2114	}
		2115
		2116	void
		2117	munmap (SV *scalar)
		2118	CODE:
		2119	sv_clear_foreign (scalar);
		2120
		2121	SV *
		2122	mremap (SV *scalar, STRLEN new_length, int flags = MREMAP_MAYMOVE, IV new_address = 0)
		2123	CODE:
		2124	{
		2125	MAGIC *mg = mg_findext (scalar, FOREIGN_MAGIC, &mmap_vtbl);
		2126	void *new;
		2127
		2128	if (!mg || SvPVX (scalar) != mg->mg_ptr)
		2129	croak ("IO::AIO::mremap: scalar not mapped by IO::AIO::mmap or improperly modified");
		2130
		2131	new = mremap (mg->mg_ptr, (size_t)mg->mg_obj, new_length, flags, (void *)new_address);
		2132
		2133	RETVAL = &PL_sv_no;
		2134
		2135	if (new != (void *)-1)
		2136	{
		2137	RETVAL = new == (void *)mg->mg_ptr
		2138	? newSVpvn ("0 but true", 10)
		2139	: &PL_sv_yes;
		2140
		2141	mg->mg_ptr = (char *)new;
		2142	mg->mg_obj = (SV *)new_length;
		2143
		2144	SvPVX (scalar) = mg->mg_ptr;
		2145	SvCUR_set (scalar, new_length);
		2146	}
		2147	}
		2148	OUTPUT:
		2149	RETVAL
		2150
		2151	int
		2152	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		2153	ALIAS:
		2154	mprotect = 1
		2155	CODE:
		2156	{
		2157	STRLEN svlen;
		2158	void *addr = SvPVbyte (scalar, svlen);
		2159	STRLEN len = SvUV (length);
		2160
		2161	if (offset < 0)
		2162	offset += svlen;
		2163
		2164	if (offset < 0 || offset > svlen)
		2165	croak ("offset outside of scalar");
		2166
		2167	if (!SvOK (length) || len + offset > svlen)
		2168	len = svlen - offset;
		2169
		2170	addr = (void *)(((intptr_t)addr) + offset);
		2171	eio_page_align (&addr, &len);
		2172
		2173	switch (ix)
		2174	{
		2175	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		2176	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		2177	}
		2178	}
		2179	OUTPUT:
		2180	RETVAL
		2181
		2182	int
		2183	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		2184	CODE:
		2185	{
		2186	STRLEN svlen;
		2187	void *addr = SvPVbyte (scalar, svlen);
		2188	size_t len = SvUV (length);
		2189
		2190	if (offset < 0)
		2191	offset += svlen;
		2192
		2193	if (offset < 0 || offset > svlen)
		2194	croak ("offset outside of scalar");
		2195
		2196	if (!SvOK (length) || len + offset > svlen)
		2197	len = svlen - offset;
		2198
		2199	addr = (void *)(((intptr_t)addr) + offset);
		2200	eio_page_align (&addr, &len);
		2201	#if _POSIX_MEMLOCK_RANGE
		2202	RETVAL = munlock (addr, len);
		2203	#else
		2204	RETVAL = EIO_ENOSYS ();
		2205	#endif
		2206	}
		2207	OUTPUT:
		2208	RETVAL
		2209
		2210	int
		2211	munlockall ()
		2212	CODE:
		2213	#if _POSIX_MEMLOCK
		2214	munlockall ();
		2215	#else
		2216	RETVAL = EIO_ENOSYS ();
		2217	#endif
		2218	OUTPUT:
		2219	RETVAL
		2220
		2221	int
		2222	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		2223	CODE:
		2224	{
		2225	#if HAVE_LINUX_SPLICE
		2226	loff_t off_in_, off_out_;
		2227	RETVAL = splice (
		2228	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		2229	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		2230	length, flags
		2231	);
		2232	#else
		2233	RETVAL = EIO_ENOSYS ();
		2234	#endif
		2235	}
		2236	OUTPUT:
		2237	RETVAL
		2238
		2239	int
		2240	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2241	CODE:
		2242	#if HAVE_LINUX_SPLICE
		2243	RETVAL = tee (rfh, wfh, length, flags);
		2244	#else
		2245	RETVAL = EIO_ENOSYS ();
		2246	#endif
		2247	OUTPUT:
		2248	RETVAL
		2249
		2250	int
		2251	pipesize (aio_rfd rfh, int new_size = -1)
		2252	PROTOTYPE: $;$
		2253	CODE:
		2254	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2255	if (new_size >= 0)
		2256	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2257	else
		2258	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2259	#else
		2260	errno = ENOSYS;
		2261	RETVAL = -1;
		2262	#endif
		2263	OUTPUT:
		2264	RETVAL
		2265
		2266	void
		2267	pipe2 (int flags = 0)
		2268	PROTOTYPE: ;$
		2269	PPCODE:
		2270	{
		2271	int fd[2];
		2272	int res;
		2273
		2274	if (flags)
		2275	#if HAVE_PIPE2
		2276	res = pipe2 (fd, flags);
		2277	#else
		2278	res = (errno = ENOSYS, -1);
		2279	#endif
		2280	else
		2281	res = pipe (fd);
		2282
		2283	if (!res)
		2284	{
		2285	EXTEND (SP, 2);
		2286	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2287	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2288	}
		2289	}
		2290
		2291	void
		2292	eventfd (unsigned int initval = 0, int flags = 0)
		2293	PPCODE:
		2294	{
		2295	int fd;
		2296	#if HAVE_EVENTFD
		2297	fd = eventfd (initval, flags);
		2298	#else
		2299	fd = (errno = ENOSYS, -1);
		2300	#endif
		2301
		2302	XPUSHs (newmortalFH (fd, O_RDWR));
		2303	}
		2304
		2305	void
		2306	timerfd_create (int clockid, int flags = 0)
		2307	PPCODE:
		2308	{
		2309	int fd;
		2310	#if HAVE_TIMERFD
		2311	fd = timerfd_create (clockid, flags);
		2312	#else
		2313	fd = (errno = ENOSYS, -1);
		2314	#endif
		2315
		2316	XPUSHs (newmortalFH (fd, O_RDWR));
		2317	}
		2318
		2319	void
		2320	timerfd_settime (SV *fh, int flags, NV interval, NV value)
		2321	PPCODE:
		2322	{
		2323	int fd = s_fileno_croak (fh, 0);
		2324	#if HAVE_TIMERFD
		2325	int res;
		2326	struct itimerspec its, ots;
		2327
		2328	ts_set (&its.it_interval, interval);
		2329	ts_set (&its.it_value , value);
		2330	res = timerfd_settime (fd, flags, &its, &ots);
		2331
		2332	if (!res)
		2333	{
		2334	EXTEND (SP, 2);
		2335	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2336	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2337	}
		2338	#else
		2339	errno = ENOSYS;
		2340	#endif
		2341	}
		2342
		2343	void
		2344	timerfd_gettime (SV *fh)
		2345	PPCODE:
		2346	{
		2347	int fd = s_fileno_croak (fh, 0);
		2348	#if HAVE_TIMERFD
		2349	int res;
		2350	struct itimerspec ots;
		2351	res = timerfd_gettime (fd, &ots);
		2352
		2353	if (!res)
		2354	{
		2355	EXTEND (SP, 2);
		2356	PUSHs (newSVnv (ts_get (&ots.it_interval)));
		2357	PUSHs (newSVnv (ts_get (&ots.it_value)));
		2358	}
		2359	#else
		2360	errno = ENOSYS;
		2361	#endif
		2362	}
		2363
		2364	UV
		2365	get_fdlimit ()
		2366	CODE:
		2367	#if HAVE_RLIMITS
		2368	struct rlimit rl;
		2369	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2370	XSRETURN_UV (rl.rlim_cur == RLIM_INFINITY ? (UV)-1 : rl.rlim_cur);
		2371	#endif
		2372	XSRETURN_UNDEF;
		2373	OUTPUT:
		2374	RETVAL
		2375
		2376	void
		2377	min_fdlimit (UV limit = 0x7fffffffU)
		2378	CODE:
		2379	{
		2380	#if HAVE_RLIMITS
		2381	struct rlimit rl;
		2382	rlim_t orig_rlim_max;
		2383	UV bit;
		2384
		2385	if (0 != getrlimit (RLIMIT_NOFILE, &rl))
		2386	goto fail;
		2387
		2388	if (rl.rlim_cur == RLIM_INFINITY)
		2389	XSRETURN_YES;
		2390
		2391	orig_rlim_max = rl.rlim_max == RLIM_INFINITY ? ((rlim_t)0)-1 : rl.rlim_max;
		2392
		2393	if (rl.rlim_cur < limit)
		2394	{
		2395	rl.rlim_cur = limit;
		2396
		2397	if (rl.rlim_max < rl.rlim_cur && rl.rlim_max != RLIM_INFINITY)
		2398	rl.rlim_max = rl.rlim_cur;
		2399	}
		2400
		2401	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2402	XSRETURN_YES;
		2403
		2404	if (errno == EPERM)
		2405	{
		2406	/* setlimit failed with EPERM - maybe we can't raise the hardlimit, or maybe */
		2407	/* our limit overflows a system-wide limit */
		2408	/* try an adaptive algorithm, but do not lower the hardlimit */
		2409	rl.rlim_max = 0;
		2410	for (bit = 0x40000000U; bit; bit >>= 1)
		2411	{
		2412	rl.rlim_max |= bit;
		2413	rl.rlim_cur = rl.rlim_max;
		2414
		2415	/* nevr decrease the hard limit */
		2416	if (rl.rlim_max < orig_rlim_max)
		2417	break;
		2418
		2419	if (0 != setrlimit (RLIMIT_NOFILE, &rl))
		2420	rl.rlim_max &= ~bit; /* too high, remove bit again */
		2421	}
		2422
		2423	/* now, raise the soft limit to the max permitted */
		2424	if (0 == getrlimit (RLIMIT_NOFILE, &rl))
		2425	{
		2426	rl.rlim_cur = rl.rlim_max;
		2427	if (0 == setrlimit (RLIMIT_NOFILE, &rl))
		2428	errno = EPERM;
		2429	}
		2430	}
		2431	#endif
		2432	fail:
		2433	XSRETURN_UNDEF;
		2434	}
		2435
		2436	void _on_next_submit (SV *cb)
		2437	CODE:
		2438	SvREFCNT_dec (on_next_submit);
		2439	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2440
2036	PROTOTYPES: DISABLE	2441	PROTOTYPES: DISABLE
		2442
		2443	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2444
		2445	BOOT:
		2446	{
		2447	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2448	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2449	}
		2450
		2451	void
		2452	DESTROY (SV *self)
		2453	CODE:
		2454	{
		2455	aio_wd wd = SvAIO_WD (self);
		2456	#if HAVE_AT
		2457	{
		2458	SV *callback = &PL_sv_undef;
		2459	dREQ; /* clobbers next_pri :/ */
		2460	next_pri = req->pri; /* restore next_pri */
		2461	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2462	req->type = EIO_WD_CLOSE;
		2463	req->wd = wd;
		2464	REQ_SEND;
		2465	}
		2466	#else
		2467	eio_wd_close_sync (wd);
		2468	#endif
		2469	}
2037		2470
2038	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	2471	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
2039		2472
2040	void	2473	void
2041	cancel (aio_req_ornot req)	2474	cancel (aio_req_ornot req)
2042	CODE:	2475	CODE:
2043	req_cancel (req);	2476	eio_cancel (req);
2044		2477
2045	void	2478	void
2046	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	2479	cb (aio_req_ornot req, SV *callback = NO_INIT)
2047	CODE:	2480	PPCODE:
		2481	{
		2482	if (GIMME_V != G_VOID)
		2483	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2484
		2485	if (items > 1)
		2486	{
		2487	SV *cb_cv = get_cb (callback);
		2488
2048	SvREFCNT_dec (req->callback);	2489	SvREFCNT_dec (req->callback);
2049	req->callback = newSVsv (callback);	2490	req->callback = SvREFCNT_inc (cb_cv);
		2491	}
		2492	}
2050		2493
2051	MODULE = IO::AIO PACKAGE = IO::AIO::GRP	2494	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
2052		2495
2053	void	2496	void
2054	add (aio_req grp, ...)	2497	add (aio_req grp, ...)
2055	PPCODE:	2498	PPCODE:
2056	{	2499	{
2057	int i;	2500	int i;
2058	aio_req req;
2059
2060	if (main_sig && !block_sig_level)
2061	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
2062		2501
2063	if (grp->int1 == 2)	2502	if (grp->int1 == 2)
2064	croak ("cannot add requests to IO::AIO::GRP after the group finished");	2503	croak ("cannot add requests to IO::AIO::GRP after the group finished");
2065		2504
2066	for (i = 1; i < items; ++i )	2505	for (i = 1; i < items; ++i )
2067	{	2506	{
		2507	aio_req req;
		2508
2068	if (GIMME_V != G_VOID)	2509	if (GIMME_V != G_VOID)
2069	XPUSHs (sv_2mortal (newSVsv (ST (i))));	2510	XPUSHs (sv_2mortal (newSVsv (ST (i))));
2070		2511
2071	req = SvAIO_REQ (ST (i));	2512	req = SvAIO_REQ (ST (i));
2072		2513
2073	if (req)	2514	if (req)
2074	{	2515	eio_grp_add (grp, req);
2075	++grp->size;
2076	req->grp = grp;
2077
2078	req->grp_prev = 0;
2079	req->grp_next = grp->grp_first;
2080
2081	if (grp->grp_first)
2082	grp->grp_first->grp_prev = req;
2083
2084	grp->grp_first = req;
2085	}
2086	}	2516	}
2087	}	2517	}
2088		2518
2089	void	2519	void
2090	cancel_subs (aio_req_ornot req)	2520	cancel_subs (aio_req_ornot req)
…		…
2099	AV *av;	2529	AV *av;
2100		2530
2101	grp->errorno = errno;	2531	grp->errorno = errno;
2102		2532
2103	av = newAV ();	2533	av = newAV ();
		2534	av_extend (av, items - 1);
2104		2535
2105	for (i = 1; i < items; ++i )	2536	for (i = 1; i < items; ++i )
2106	av_push (av, newSVsv (ST (i)));	2537	av_push (av, newSVsv (ST (i)));
2107		2538
2108	SvREFCNT_dec (grp->sv1);	2539	SvREFCNT_dec (grp->sv1);
…		…
2115	grp->errorno = errorno;	2546	grp->errorno = errorno;
2116		2547
2117	void	2548	void
2118	limit (aio_req grp, int limit)	2549	limit (aio_req grp, int limit)
2119	CODE:	2550	CODE:
2120	grp->int2 = limit;	2551	eio_grp_limit (grp, limit);
2121	aio_grp_feed (grp);
2122		2552
2123	void	2553	void
2124	feed (aio_req grp, SV *callback=&PL_sv_undef)	2554	feed (aio_req grp, SV *callback = &PL_sv_undef)
2125	CODE:	2555	CODE:
2126	{	2556	{
2127	SvREFCNT_dec (grp->sv2);	2557	SvREFCNT_dec (grp->sv2);
2128	grp->sv2 = newSVsv (callback);	2558	grp->sv2 = newSVsv (callback);
		2559	grp->feed = aio_grp_feed;
2129		2560
2130	if (grp->int2 <= 0)	2561	if (grp->int2 <= 0)
2131	grp->int2 = 2;	2562	grp->int2 = 2;
2132		2563
2133	aio_grp_feed (grp);	2564	eio_grp_limit (grp, grp->int2);
2134	}	2565	}
2135		2566

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines