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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.208 by root, Sat Jan 7 18:42:43 2012 UTC vs.
Revision 1.211 by root, Sat Apr 7 00:50:33 2012 UTC

… …
17#include <fcntl.h> 17#include <fcntl.h>
18#include <sched.h> 18#include <sched.h>
19 19
20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES 20#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
21# include <sys/mman.h> 21# include <sys/mman.h>
22#endif
23
24#if __linux__
25# include <linux/fs.h>
26# ifdef FS_IOC_FIEMAP
27# include <linux/fiemap.h>
28# define HAVE_FIEMAP 1
29# endif
22#endif 30#endif
23 31
24/* perl namespace pollution */ 32/* perl namespace pollution */
25#undef VERSION 33#undef VERSION
26 34
… …
77 85
78 #define EIO_STRUCT_STAT Stat_t 86 #define EIO_STRUCT_STAT Stat_t
79 87
80#endif 88#endif
81 89
82/* use NV for 32 bit perls as it allows larger offsets */
83#if IVSIZE >= 8
84# define VAL64 IV
85# define SvVAL64 SvIV
86# define newSVval64 newSViv
87#else
88# define VAL64 NV
89# define SvVAL64 SvNV
90# define newSVval64 newSVnv
91#endif
92
93/*****************************************************************************/ 90/*****************************************************************************/
94 91
95#if __GNUC__ >= 3 92#if __GNUC__ >= 3
96# define expect(expr,value) __builtin_expect ((expr),(value)) 93# define expect(expr,value) __builtin_expect ((expr),(value))
97#else 94#else
… …
126static void req_destroy (eio_req *grp); 123static void req_destroy (eio_req *grp);
127#define EIO_DESTROY(req) req_destroy (req) 124#define EIO_DESTROY(req) req_destroy (req)
128 125
129#include "libeio/eio.c" 126#include "libeio/eio.c"
130 127
131/* Linux/others */
132#ifndef O_ASYNC
133# define O_ASYNC 0
134#endif
135#ifndef O_DIRECT
136# define O_DIRECT 0
137#endif
138#ifndef O_NOATIME
139# define O_NOATIME 0
140#endif
141
142/* POSIX */
143#ifndef O_CLOEXEC
144# define O_CLOEXEC 0
145#endif
146#ifndef O_NOFOLLOW
147# define O_NOFOLLOW 0
148#endif
149#ifndef O_NOCTTY
150# define O_NOCTTY 0
151#endif
152#ifndef O_NONBLOCK
153# define O_NONBLOCK 0
154#endif
155#ifndef O_EXEC
156# define O_EXEC 0
157#endif
158#ifndef O_SEARCH
159# define O_SEARCH 0
160#endif
161#ifndef O_DIRECTORY
162# define O_DIRECTORY 0
163#endif
164#ifndef O_DSYNC
165# define O_DSYNC 0
166#endif
167#ifndef O_RSYNC
168# define O_RSYNC 0
169#endif
170#ifndef O_SYNC
171# define O_SYNC 0
172#endif
173#ifndef O_TTY_INIT
174# define O_TTY_INIT 0
175#endif
176
177#ifndef POSIX_FADV_NORMAL
178# define POSIX_FADV_NORMAL 0
179#endif
180#ifndef POSIX_FADV_SEQUENTIAL
181# define POSIX_FADV_SEQUENTIAL 0
182#endif
183#ifndef POSIX_FADV_RANDOM
184# define POSIX_FADV_RANDOM 0
185#endif
186#ifndef POSIX_FADV_NOREUSE
187# define POSIX_FADV_NOREUSE 0
188#endif
189#ifndef POSIX_FADV_WILLNEED
190# define POSIX_FADV_WILLNEED 0
191#endif
192#ifndef POSIX_FADV_DONTNEED
193# define POSIX_FADV_DONTNEED 0
194#endif
195
196#if !HAVE_POSIX_FADVISE 128#if !HAVE_POSIX_FADVISE
197# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */ 129# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
198#endif 130#endif
199 131
200#ifndef POSIX_MADV_NORMAL
201# define POSIX_MADV_NORMAL 0
202#endif
203#ifndef POSIX_MADV_SEQUENTIAL
204# define POSIX_MADV_SEQUENTIAL 0
205#endif
206#ifndef POSIX_MADV_RANDOM
207# define POSIX_MADV_RANDOM 0
208#endif
209#ifndef POSIX_MADV_WILLNEED
210# define POSIX_MADV_WILLNEED 0
211#endif
212#ifndef POSIX_MADV_DONTNEED
213# define POSIX_MADV_DONTNEED 0
214#endif
215
216#if !HAVE_POSIX_MADVISE 132#if !HAVE_POSIX_MADVISE
217# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */ 133# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
218#endif
219
220#ifndef PROT_NONE
221# define PROT_NONE 0
222#endif
223#ifndef PROT_READ
224# define PROT_READ 0
225#endif
226#ifndef PROT_WRITE
227# define PROT_READ 0
228#endif
229#ifndef PROT_EXEC
230# define PROT_EXEC 0
231#endif
232
233#ifndef ST_RDONLY
234# define ST_RDONLY 0
235#endif
236#ifndef ST_NOSUID
237# define ST_NOSUID 0
238#endif
239#ifndef ST_NODEV
240# define ST_NODEV 0
241#endif
242#ifndef ST_NOEXEC
243# define ST_NOEXEC 0
244#endif
245#ifndef ST_SYNCHRONOUS
246# define ST_SYNCHRONOUS 0
247#endif
248#ifndef ST_MANDLOCK
249# define ST_MANDLOCK 0
250#endif
251#ifndef ST_WRITE
252# define ST_WRITE 0
253#endif
254#ifndef ST_APPEND
255# define ST_APPEND 0
256#endif
257#ifndef ST_IMMUTABLE
258# define ST_IMMUTABLE 0
259#endif
260#ifndef ST_NOATIME
261# define ST_NOATIME 0
262#endif
263#ifndef ST_NODIRATIME
264# define ST_NODIRATIME 0
265#endif
266#ifndef ST_RELATIME
267# define ST_RELATIME 0
268#endif
269
270#ifndef S_IFIFO
271# define S_IFIFO 0
272#endif
273#ifndef S_IFCHR
274# define S_IFCHR 0
275#endif
276#ifndef S_IFBLK
277# define S_IFBLK 0
278#endif
279#ifndef S_IFLNK
280# define S_IFLNK 0
281#endif
282#ifndef S_IFREG
283# define S_IFREG 0
284#endif
285#ifndef S_IFDIR
286# define S_IFDIR 0
287#endif
288#ifndef S_IFWHT
289# define S_IFWHT 0
290#endif
291#ifndef S_IFSOCK
292# define S_IFSOCK 0
293#endif 134#endif
294 135
295#ifndef MAP_ANONYMOUS 136#ifndef MAP_ANONYMOUS
296# ifdef MAP_ANON 137# ifdef MAP_ANON
297# define MAP_ANONYMOUS MAP_ANON 138# define MAP_ANONYMOUS MAP_ANON
298# else 139# else
299# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */ 140# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
300# endif 141# endif
301#endif 142#endif
302#ifndef MAP_HUGETLB 143
303# define MAP_HUGETLB 0 144/* defines all sorts of constants to 0 unless they are already defined */
304#endif 145#include "def0.h"
305#ifndef MAP_LOCKED
306# define MAP_LOCKED 0
307#endif
308#ifndef MAP_NORESERVE
309# define MAP_NORESERVE 0
310#endif
311#ifndef MAP_POPULATE
312# define MAP_POPULATE 0
313#endif
314#ifndef MAP_NONBLOCK
315# define MAP_NONBLOCK 0
316#endif
317 146
318#ifndef makedev 147#ifndef makedev
319# define makedev(maj,min) (((maj) << 8) | (min)) 148# define makedev(maj,min) (((maj) << 8) | (min))
320#endif 149#endif
321#ifndef major 150#ifndef major
… …
326#endif 155#endif
327 156
328#ifndef PAGESIZE 157#ifndef PAGESIZE
329# define PAGESIZE sysconf (_SC_PAGESIZE) 158# define PAGESIZE sysconf (_SC_PAGESIZE)
330#endif 159#endif
160
161/*****************************************************************************/
162
163static void
164fiemap (eio_req *req)
165{
166 req->result = -1;
167
168#if HAVE_FIEMAP
169 int count = req->int3;
170
171 /* heuristic: first try with 64 extents if we don't know how many, */
172 /* as most files have (hopefully) fewer than this many extents */
173 /* in fact, most should have <= 2, so maybe the 72 below is probably overkill */
174 if (count < 0)
175 count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
176
177 for (;;)
178 {
179 struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
180 errno = ENOMEM;
181 if (!fiemap)
182 return;
183
184 req->ptr1 = fiemap;
185 req->flags |= EIO_FLAG_PTR1_FREE;
186
187 fiemap->fm_start = req->offs;
188 fiemap->fm_length = req->size;
189 fiemap->fm_flags = req->int2;
190 fiemap->fm_extent_count = count;
191
192 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
193 return;
194
195 if (req->int3 >= 0)
196 break; /* when not autosizing we are done */
197
198 if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
199 break; /* autosizing successful, we are done */
200
201 fiemap->fm_flags = req->int2;
202 fiemap->fm_extent_count = 0;
203
204 if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
205 return;
206
207 count = fiemap->fm_mapped_extents;
208
209 free (fiemap);
210 }
211
212 req->result = 0;
213
214#else
215 errno = ENOSYS;
216#endif
217}
218
219/*****************************************************************************/
331 220
332enum { 221enum {
333 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */ 222 FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
334}; 223};
335 224
… …
638 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2); 527 PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
639 528
640 PUSHs (sv_result); 529 PUSHs (sv_result);
641 break; 530 break;
642 531
532 case EIO_SEEK:
533 PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
534 break;
535
643 case EIO_READ: 536 case EIO_READ:
644 { 537 {
645 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0)); 538 SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
646 *SvEND (req->sv2) = 0; 539 *SvEND (req->sv2) = 0;
647 SvPOK_only (req->sv2); 540 SvPOK_only (req->sv2);
648 SvSETMAGIC (req->sv2); 541 SvSETMAGIC (req->sv2);
649 PUSHs (sv_result); 542 PUSHs (sv_result);
650 } 543 }
544 break;
545
546 case EIO_CUSTOM:
547 if (req->feed == fiemap)
548 {
549#if HAVE_FIEMAP
550 if (!req->result)
551 {
552 struct fiemap *fiemap = (struct fiemap *)req->ptr1;
553
554 if (fiemap->fm_extent_count)
555 {
556 AV *av = newAV ();
557 int i;
558
559 while (fiemap->fm_mapped_extents)
560 {
561 struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
562 AV *ext_av = newAV ();
563
564 av_store (ext_av, 3, newSVuv (extent->fe_flags));
565 av_store (ext_av, 2, newSVval64 (extent->fe_length));
566 av_store (ext_av, 1, newSVval64 (extent->fe_physical));
567 av_store (ext_av, 0, newSVval64 (extent->fe_logical));
568
569 av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
570 }
571
572 PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
573 }
574 else
575 {
576 SvIV_set (sv_result, fiemap->fm_mapped_extents);
577 PUSHs (sv_result);
578 }
579 }
580#endif
581 }
582 else
583 PUSHs (sv_result);
651 break; 584 break;
652 585
653 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */ 586 case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
654 if (req->result > 0) 587 if (req->result > 0)
655 SvIV_set (sv_result, 0); 588 SvIV_set (sv_result, 0);
… …
923 IV iv; 856 IV iv;
924 } *civ, const_iv[] = { 857 } *civ, const_iv[] = {
925# define const_niv(name, value) { # name, (IV) value }, 858# define const_niv(name, value) { # name, (IV) value },
926# define const_iv(name) { # name, (IV) name }, 859# define const_iv(name) { # name, (IV) name },
927# define const_eio(name) { # name, (IV) EIO_ ## name }, 860# define const_eio(name) { # name, (IV) EIO_ ## name },
861
862 /* you have to re-run ./gendef0 after adding/Removing any constants here */
863
864 const_iv (ENOSYS)
928 const_iv (EXDEV) 865 const_iv (EXDEV)
929 const_iv (ENOSYS) 866 const_iv (EBADR)
867
930 const_iv (O_RDONLY) 868 const_iv (O_RDONLY)
931 const_iv (O_WRONLY) 869 const_iv (O_WRONLY)
932 const_iv (O_RDWR) 870 const_iv (O_RDWR)
933 const_iv (O_CREAT) 871 const_iv (O_CREAT)
934 const_iv (O_TRUNC) 872 const_iv (O_TRUNC)
… …
1002 const_iv (MAP_LOCKED) 940 const_iv (MAP_LOCKED)
1003 const_iv (MAP_NORESERVE) 941 const_iv (MAP_NORESERVE)
1004 const_iv (MAP_POPULATE) 942 const_iv (MAP_POPULATE)
1005 const_iv (MAP_NONBLOCK) 943 const_iv (MAP_NONBLOCK)
1006 944
945 const_iv (FIEMAP_FLAG_SYNC)
946 const_iv (FIEMAP_FLAG_XATTR)
947 const_iv (FIEMAP_FLAGS_COMPAT)
948 const_iv (FIEMAP_EXTENT_LAST)
949 const_iv (FIEMAP_EXTENT_UNKNOWN)
950 const_iv (FIEMAP_EXTENT_DELALLOC)
951 const_iv (FIEMAP_EXTENT_ENCODED)
952 const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
953 const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
954 const_iv (FIEMAP_EXTENT_DATA_INLINE)
955 const_iv (FIEMAP_EXTENT_DATA_TAIL)
956 const_iv (FIEMAP_EXTENT_UNWRITTEN)
957 const_iv (FIEMAP_EXTENT_MERGED)
958 const_iv (FIEMAP_EXTENT_SHARED)
959
960 const_eio (SEEK_SET)
961 const_eio (SEEK_CUR)
962 const_eio (SEEK_END)
963
1007 const_eio (MCL_FUTURE) 964 const_eio (MCL_FUTURE)
1008 const_eio (MCL_CURRENT) 965 const_eio (MCL_CURRENT)
1009 966
1010 const_eio (MS_ASYNC) 967 const_eio (MS_ASYNC)
1011 const_eio (MS_INVALIDATE) 968 const_eio (MS_INVALIDATE)
… …
1133 1090
1134 req->type = ix; 1091 req->type = ix;
1135 req->sv1 = newSVsv (fh); 1092 req->sv1 = newSVsv (fh);
1136 req->int1 = fd; 1093 req->int1 = fd;
1137 1094
1138 REQ_SEND (req); 1095 REQ_SEND;
1139} 1096}
1140 1097
1141void 1098void
1142aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef) 1099aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
1143 PPCODE: 1100 PPCODE:
… …
1150 req->int1 = fd; 1107 req->int1 = fd;
1151 req->offs = offset; 1108 req->offs = offset;
1152 req->size = nbytes; 1109 req->size = nbytes;
1153 req->int2 = flags; 1110 req->int2 = flags;
1154 1111
1155 REQ_SEND (req); 1112 REQ_SEND;
1156} 1113}
1157 1114
1158void 1115void
1159aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef) 1116aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
1160 PPCODE: 1117 PPCODE:
… …
1167 req->int1 = fd; 1124 req->int1 = fd;
1168 req->int2 = mode; 1125 req->int2 = mode;
1169 req->offs = offset; 1126 req->offs = offset;
1170 req->size = len; 1127 req->size = len;
1171 1128
1172 REQ_SEND (req); 1129 REQ_SEND;
1173} 1130}
1174 1131
1175void 1132void
1176aio_close (SV *fh, SV *callback=&PL_sv_undef) 1133aio_close (SV *fh, SV *callback=&PL_sv_undef)
1177 PPCODE: 1134 PPCODE:
… …
1201 req->type = EIO_DUP2; 1158 req->type = EIO_DUP2;
1202 req->int1 = close_fd; 1159 req->int1 = close_fd;
1203 req->sv2 = newSVsv (fh); 1160 req->sv2 = newSVsv (fh);
1204 req->int2 = fd; 1161 req->int2 = fd;
1205 1162
1206 REQ_SEND (req); 1163 REQ_SEND;
1164}
1165
1166void
1167aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
1168 PPCODE:
1169{
1170 int fd = s_fileno_croak (fh, 0);
1171 dREQ;
1172
1173 req->type = EIO_SEEK;
1174 req->sv1 = newSVsv (fh);
1175 req->int1 = fd;
1176 req->offs = SvVAL64 (offset);
1177 req->int2 = whence;
1178
1179 REQ_SEND;
1207} 1180}
1208 1181
1209void 1182void
1210aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef) 1183aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1211 ALIAS: 1184 ALIAS:
… …
1539 1512
1540 req->type = EIO_MLOCKALL; 1513 req->type = EIO_MLOCKALL;
1541 req->int1 = flags; 1514 req->int1 = flags;
1542 1515
1543 REQ_SEND; 1516 REQ_SEND;
1517}
1518
1519void
1520aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
1521 PPCODE:
1522{
1523 int fd = s_fileno_croak (fh, 0);
1524 dREQ;
1525
1526 req->type = EIO_CUSTOM;
1527 req->sv1 = newSVsv (fh);
1528 req->int1 = fd;
1529
1530 req->feed = fiemap;
1531#if HAVE_FIEMAP
1532 /* keep our fingers crossed that the next two types are 64 bit */
1533 req->offs = start;
1534 req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
1535 req->int2 = flags;
1536 req->int3 = SvOK (count) ? SvIV (count) : -1;
1537#endif
1538
1539 REQ_SEND;
1544} 1540}
1545 1541
1546void 1542void
1547aio_busy (double delay, SV *callback=&PL_sv_undef) 1543aio_busy (double delay, SV *callback=&PL_sv_undef)
1548 PPCODE: 1544 PPCODE:

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