1 | /* |
1 | /* |
2 | * libeio implementation |
2 | * libeio implementation |
3 | * |
3 | * |
4 | * Copyright (c) 2007,2008 Marc Alexander Lehmann <libeio@schmorp.de> |
4 | * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libeio@schmorp.de> |
5 | * All rights reserved. |
5 | * All rights reserved. |
6 | * |
6 | * |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
7 | * Redistribution and use in source and binary forms, with or without modifica- |
8 | * tion, are permitted provided that the following conditions are met: |
8 | * tion, are permitted provided that the following conditions are met: |
9 | * |
9 | * |
… | |
… | |
35 | * and other provisions required by the GPL. If you do not delete the |
35 | * and other provisions required by the GPL. If you do not delete the |
36 | * provisions above, a recipient may use your version of this file under |
36 | * provisions above, a recipient may use your version of this file under |
37 | * either the BSD or the GPL. |
37 | * either the BSD or the GPL. |
38 | */ |
38 | */ |
39 | |
39 | |
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40 | #ifndef _WIN32 |
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41 | # include "config.h" |
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42 | #endif |
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43 | |
40 | #include "eio.h" |
44 | #include "eio.h" |
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45 | #include "ecb.h" |
41 | |
46 | |
42 | #ifdef EIO_STACKSIZE |
47 | #ifdef EIO_STACKSIZE |
43 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
48 | # define XTHREAD_STACKSIZE EIO_STACKSIZE |
44 | #endif |
49 | #endif |
45 | #include "xthread.h" |
50 | #include "xthread.h" |
… | |
… | |
49 | #include <stdlib.h> |
54 | #include <stdlib.h> |
50 | #include <string.h> |
55 | #include <string.h> |
51 | #include <errno.h> |
56 | #include <errno.h> |
52 | #include <sys/types.h> |
57 | #include <sys/types.h> |
53 | #include <sys/stat.h> |
58 | #include <sys/stat.h> |
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59 | #include <sys/statvfs.h> |
54 | #include <limits.h> |
60 | #include <limits.h> |
55 | #include <fcntl.h> |
61 | #include <fcntl.h> |
56 | #include <assert.h> |
62 | #include <assert.h> |
57 | |
63 | |
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64 | /* intptr_t comes from unistd.h, says POSIX/UNIX/tradition */ |
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65 | /* intptr_t only comes form stdint.h, says idiot openbsd coder */ |
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66 | #if HAVE_STDINT_H |
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67 | # include <stdint.h> |
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68 | #endif |
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69 | |
58 | #ifndef EIO_FINISH |
70 | #ifndef EIO_FINISH |
59 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
71 | # define EIO_FINISH(req) ((req)->finish) && !EIO_CANCELLED (req) ? (req)->finish (req) : 0 |
60 | #endif |
72 | #endif |
61 | |
73 | |
62 | #ifndef EIO_DESTROY |
74 | #ifndef EIO_DESTROY |
… | |
… | |
68 | #endif |
80 | #endif |
69 | |
81 | |
70 | #ifdef _WIN32 |
82 | #ifdef _WIN32 |
71 | |
83 | |
72 | /*doh*/ |
84 | /*doh*/ |
73 | |
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74 | #else |
85 | #else |
75 | |
86 | |
76 | # include "config.h" |
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77 | # include <sys/time.h> |
87 | # include <sys/time.h> |
78 | # include <sys/select.h> |
88 | # include <sys/select.h> |
79 | # include <unistd.h> |
89 | # include <unistd.h> |
80 | # include <utime.h> |
90 | # include <utime.h> |
81 | # include <signal.h> |
91 | # include <signal.h> |
82 | # include <dirent.h> |
92 | # include <dirent.h> |
83 | |
93 | |
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94 | #if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES |
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95 | # include <sys/mman.h> |
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96 | #endif |
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97 | |
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98 | /* POSIX_SOURCE is useless on bsd's, and XOPEN_SOURCE is unreliable there, too */ |
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99 | # if __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ |
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100 | # define _DIRENT_HAVE_D_TYPE /* sigh */ |
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101 | # define D_INO(de) (de)->d_fileno |
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102 | # define D_NAMLEN(de) (de)->d_namlen |
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103 | # elif __linux || defined d_ino || _XOPEN_SOURCE >= 600 |
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104 | # define D_INO(de) (de)->d_ino |
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105 | # endif |
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106 | |
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107 | #ifdef _D_EXACT_NAMLEN |
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108 | # undef D_NAMLEN |
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109 | # define D_NAMLEN(de) _D_EXACT_NAMLEN (de) |
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110 | #endif |
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111 | |
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112 | # ifdef _DIRENT_HAVE_D_TYPE |
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113 | # define D_TYPE(de) (de)->d_type |
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114 | # endif |
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115 | |
84 | # ifndef EIO_STRUCT_DIRENT |
116 | # ifndef EIO_STRUCT_DIRENT |
85 | # define EIO_STRUCT_DIRENT struct dirent |
117 | # define EIO_STRUCT_DIRENT struct dirent |
86 | # endif |
118 | # endif |
87 | |
119 | |
88 | #endif |
120 | #endif |
89 | |
121 | |
90 | #if HAVE_SENDFILE |
122 | #if HAVE_SENDFILE |
91 | # if __linux |
123 | # if __linux |
92 | # include <sys/sendfile.h> |
124 | # include <sys/sendfile.h> |
93 | # elif __freebsd |
125 | # elif __FreeBSD__ || defined __APPLE__ |
94 | # include <sys/socket.h> |
126 | # include <sys/socket.h> |
95 | # include <sys/uio.h> |
127 | # include <sys/uio.h> |
96 | # elif __hpux |
128 | # elif __hpux |
97 | # include <sys/socket.h> |
129 | # include <sys/socket.h> |
98 | # elif __solaris /* not yet */ |
130 | # elif __solaris |
99 | # include <sys/sendfile.h> |
131 | # include <sys/sendfile.h> |
100 | # else |
132 | # else |
101 | # error sendfile support requested but not available |
133 | # error sendfile support requested but not available |
102 | # endif |
134 | # endif |
103 | #endif |
135 | #endif |
104 | |
136 | |
105 | /* number of seconds after which an idle threads exit */ |
137 | #ifndef D_TYPE |
106 | #define IDLE_TIMEOUT 10 |
138 | # define D_TYPE(de) 0 |
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139 | #endif |
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140 | #ifndef D_INO |
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141 | # define D_INO(de) 0 |
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142 | #endif |
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143 | #ifndef D_NAMLEN |
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144 | # define D_NAMLEN(de) strlen ((de)->d_name) |
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145 | #endif |
107 | |
146 | |
108 | /* used for struct dirent, AIX doesn't provide it */ |
147 | /* used for struct dirent, AIX doesn't provide it */ |
109 | #ifndef NAME_MAX |
148 | #ifndef NAME_MAX |
110 | # define NAME_MAX 4096 |
149 | # define NAME_MAX 4096 |
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150 | #endif |
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151 | |
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152 | /* used for readlink etc. */ |
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153 | #ifndef PATH_MAX |
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154 | # define PATH_MAX 4096 |
111 | #endif |
155 | #endif |
112 | |
156 | |
113 | /* buffer size for various temporary buffers */ |
157 | /* buffer size for various temporary buffers */ |
114 | #define EIO_BUFSIZE 65536 |
158 | #define EIO_BUFSIZE 65536 |
115 | |
159 | |
… | |
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121 | errno = ENOMEM; \ |
165 | errno = ENOMEM; \ |
122 | if (!eio_buf) \ |
166 | if (!eio_buf) \ |
123 | return -1; |
167 | return -1; |
124 | |
168 | |
125 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
169 | #define EIO_TICKS ((1000000 + 1023) >> 10) |
126 | |
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127 | /*****************************************************************************/ |
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128 | |
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129 | #if __GNUC__ >= 3 |
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130 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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131 | #else |
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132 | # define expect(expr,value) (expr) |
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133 | #endif |
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134 | |
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135 | #define expect_false(expr) expect ((expr) != 0, 0) |
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136 | #define expect_true(expr) expect ((expr) != 0, 1) |
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137 | |
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138 | /*****************************************************************************/ |
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139 | |
170 | |
140 | #define ETP_PRI_MIN EIO_PRI_MIN |
171 | #define ETP_PRI_MIN EIO_PRI_MIN |
141 | #define ETP_PRI_MAX EIO_PRI_MAX |
172 | #define ETP_PRI_MAX EIO_PRI_MAX |
142 | |
173 | |
143 | struct etp_worker; |
174 | struct etp_worker; |
… | |
… | |
159 | if (wrk->dirp) \ |
190 | if (wrk->dirp) \ |
160 | { \ |
191 | { \ |
161 | closedir (wrk->dirp); \ |
192 | closedir (wrk->dirp); \ |
162 | wrk->dirp = 0; \ |
193 | wrk->dirp = 0; \ |
163 | } |
194 | } |
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195 | |
164 | #define ETP_WORKER_COMMON \ |
196 | #define ETP_WORKER_COMMON \ |
165 | void *dbuf; \ |
197 | void *dbuf; \ |
166 | DIR *dirp; |
198 | DIR *dirp; |
167 | |
199 | |
168 | /*****************************************************************************/ |
200 | /*****************************************************************************/ |
169 | |
201 | |
170 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
202 | #define ETP_NUM_PRI (ETP_PRI_MAX - ETP_PRI_MIN + 1) |
171 | |
203 | |
172 | /* calculcate time difference in ~1/EIO_TICKS of a second */ |
204 | /* calculate time difference in ~1/EIO_TICKS of a second */ |
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205 | ecb_inline int |
173 | static int tvdiff (struct timeval *tv1, struct timeval *tv2) |
206 | tvdiff (struct timeval *tv1, struct timeval *tv2) |
174 | { |
207 | { |
175 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
208 | return (tv2->tv_sec - tv1->tv_sec ) * EIO_TICKS |
176 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
209 | + ((tv2->tv_usec - tv1->tv_usec) >> 10); |
177 | } |
210 | } |
178 | |
211 | |
… | |
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185 | static unsigned int max_poll_reqs; /* reslock */ |
218 | static unsigned int max_poll_reqs; /* reslock */ |
186 | |
219 | |
187 | static volatile unsigned int nreqs; /* reqlock */ |
220 | static volatile unsigned int nreqs; /* reqlock */ |
188 | static volatile unsigned int nready; /* reqlock */ |
221 | static volatile unsigned int nready; /* reqlock */ |
189 | static volatile unsigned int npending; /* reqlock */ |
222 | static volatile unsigned int npending; /* reqlock */ |
190 | static volatile unsigned int max_idle = 4; |
223 | static volatile unsigned int max_idle = 4; /* maximum number of threads that can idle indefinitely */ |
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224 | static volatile unsigned int idle_timeout = 10; /* number of seconds after which an idle threads exit */ |
191 | |
225 | |
192 | static mutex_t wrklock = X_MUTEX_INIT; |
226 | static xmutex_t wrklock; |
193 | static mutex_t reslock = X_MUTEX_INIT; |
227 | static xmutex_t reslock; |
194 | static mutex_t reqlock = X_MUTEX_INIT; |
228 | static xmutex_t reqlock; |
195 | static cond_t reqwait = X_COND_INIT; |
229 | static xcond_t reqwait; |
196 | |
230 | |
197 | #if !HAVE_PREADWRITE |
231 | #if !HAVE_PREADWRITE |
198 | /* |
232 | /* |
199 | * make our pread/pwrite emulation safe against themselves, but not against |
233 | * make our pread/pwrite emulation safe against themselves, but not against |
200 | * normal read/write by using a mutex. slows down execution a lot, |
234 | * normal read/write by using a mutex. slows down execution a lot, |
201 | * but that's your problem, not mine. |
235 | * but that's your problem, not mine. |
202 | */ |
236 | */ |
203 | static mutex_t preadwritelock = X_MUTEX_INIT; |
237 | static xmutex_t preadwritelock = X_MUTEX_INIT; |
204 | #endif |
238 | #endif |
205 | |
239 | |
206 | typedef struct etp_worker |
240 | typedef struct etp_worker |
207 | { |
241 | { |
208 | /* locked by wrklock */ |
242 | /* locked by wrklock */ |
209 | struct etp_worker *prev, *next; |
243 | struct etp_worker *prev, *next; |
210 | |
244 | |
211 | thread_t tid; |
245 | xthread_t tid; |
212 | |
246 | |
213 | /* locked by reslock, reqlock or wrklock */ |
247 | /* locked by reslock, reqlock or wrklock */ |
214 | ETP_REQ *req; /* currently processed request */ |
248 | ETP_REQ *req; /* currently processed request */ |
215 | |
249 | |
216 | ETP_WORKER_COMMON |
250 | ETP_WORKER_COMMON |
… | |
… | |
221 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
255 | #define ETP_WORKER_LOCK(wrk) X_LOCK (wrklock) |
222 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
256 | #define ETP_WORKER_UNLOCK(wrk) X_UNLOCK (wrklock) |
223 | |
257 | |
224 | /* worker threads management */ |
258 | /* worker threads management */ |
225 | |
259 | |
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260 | static void ecb_cold |
226 | static void etp_worker_clear (etp_worker *wrk) |
261 | etp_worker_clear (etp_worker *wrk) |
227 | { |
262 | { |
228 | ETP_WORKER_CLEAR (wrk); |
263 | ETP_WORKER_CLEAR (wrk); |
229 | } |
264 | } |
230 | |
265 | |
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266 | static void ecb_cold |
231 | static void etp_worker_free (etp_worker *wrk) |
267 | etp_worker_free (etp_worker *wrk) |
232 | { |
268 | { |
233 | wrk->next->prev = wrk->prev; |
269 | wrk->next->prev = wrk->prev; |
234 | wrk->prev->next = wrk->next; |
270 | wrk->prev->next = wrk->next; |
235 | |
271 | |
236 | free (wrk); |
272 | free (wrk); |
237 | } |
273 | } |
238 | |
274 | |
239 | static unsigned int etp_nreqs (void) |
275 | static unsigned int |
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276 | etp_nreqs (void) |
240 | { |
277 | { |
241 | int retval; |
278 | int retval; |
242 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
279 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
243 | retval = nreqs; |
280 | retval = nreqs; |
244 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
281 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
245 | return retval; |
282 | return retval; |
246 | } |
283 | } |
247 | |
284 | |
248 | static unsigned int etp_nready (void) |
285 | static unsigned int |
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286 | etp_nready (void) |
249 | { |
287 | { |
250 | unsigned int retval; |
288 | unsigned int retval; |
251 | |
289 | |
252 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
290 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
253 | retval = nready; |
291 | retval = nready; |
254 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
292 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
255 | |
293 | |
256 | return retval; |
294 | return retval; |
257 | } |
295 | } |
258 | |
296 | |
259 | static unsigned int etp_npending (void) |
297 | static unsigned int |
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298 | etp_npending (void) |
260 | { |
299 | { |
261 | unsigned int retval; |
300 | unsigned int retval; |
262 | |
301 | |
263 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
302 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
264 | retval = npending; |
303 | retval = npending; |
265 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
304 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
266 | |
305 | |
267 | return retval; |
306 | return retval; |
268 | } |
307 | } |
269 | |
308 | |
270 | static unsigned int etp_nthreads (void) |
309 | static unsigned int |
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310 | etp_nthreads (void) |
271 | { |
311 | { |
272 | unsigned int retval; |
312 | unsigned int retval; |
273 | |
313 | |
274 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
314 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
275 | retval = started; |
315 | retval = started; |
… | |
… | |
289 | } etp_reqq; |
329 | } etp_reqq; |
290 | |
330 | |
291 | static etp_reqq req_queue; |
331 | static etp_reqq req_queue; |
292 | static etp_reqq res_queue; |
332 | static etp_reqq res_queue; |
293 | |
333 | |
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334 | static int ecb_noinline |
294 | static int reqq_push (etp_reqq *q, ETP_REQ *req) |
335 | reqq_push (etp_reqq *q, ETP_REQ *req) |
295 | { |
336 | { |
296 | int pri = req->pri; |
337 | int pri = req->pri; |
297 | req->next = 0; |
338 | req->next = 0; |
298 | |
339 | |
299 | if (q->qe[pri]) |
340 | if (q->qe[pri]) |
… | |
… | |
305 | q->qe[pri] = q->qs[pri] = req; |
346 | q->qe[pri] = q->qs[pri] = req; |
306 | |
347 | |
307 | return q->size++; |
348 | return q->size++; |
308 | } |
349 | } |
309 | |
350 | |
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351 | static ETP_REQ * ecb_noinline |
310 | static ETP_REQ *reqq_shift (etp_reqq *q) |
352 | reqq_shift (etp_reqq *q) |
311 | { |
353 | { |
312 | int pri; |
354 | int pri; |
313 | |
355 | |
314 | if (!q->size) |
356 | if (!q->size) |
315 | return 0; |
357 | return 0; |
… | |
… | |
330 | } |
372 | } |
331 | |
373 | |
332 | abort (); |
374 | abort (); |
333 | } |
375 | } |
334 | |
376 | |
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377 | static void ecb_cold |
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378 | etp_thread_init (void) |
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379 | { |
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380 | X_MUTEX_CREATE (wrklock); |
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381 | X_MUTEX_CREATE (reslock); |
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382 | X_MUTEX_CREATE (reqlock); |
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383 | X_COND_CREATE (reqwait); |
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384 | } |
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385 | |
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386 | static void ecb_cold |
335 | static void etp_atfork_prepare (void) |
387 | etp_atfork_prepare (void) |
336 | { |
388 | { |
337 | X_LOCK (wrklock); |
389 | X_LOCK (wrklock); |
338 | X_LOCK (reqlock); |
390 | X_LOCK (reqlock); |
339 | X_LOCK (reslock); |
391 | X_LOCK (reslock); |
340 | #if !HAVE_PREADWRITE |
392 | #if !HAVE_PREADWRITE |
341 | X_LOCK (preadwritelock); |
393 | X_LOCK (preadwritelock); |
342 | #endif |
394 | #endif |
343 | } |
395 | } |
344 | |
396 | |
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397 | static void ecb_cold |
345 | static void etp_atfork_parent (void) |
398 | etp_atfork_parent (void) |
346 | { |
399 | { |
347 | #if !HAVE_PREADWRITE |
400 | #if !HAVE_PREADWRITE |
348 | X_UNLOCK (preadwritelock); |
401 | X_UNLOCK (preadwritelock); |
349 | #endif |
402 | #endif |
350 | X_UNLOCK (reslock); |
403 | X_UNLOCK (reslock); |
351 | X_UNLOCK (reqlock); |
404 | X_UNLOCK (reqlock); |
352 | X_UNLOCK (wrklock); |
405 | X_UNLOCK (wrklock); |
353 | } |
406 | } |
354 | |
407 | |
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408 | static void ecb_cold |
355 | static void etp_atfork_child (void) |
409 | etp_atfork_child (void) |
356 | { |
410 | { |
357 | ETP_REQ *prv; |
411 | ETP_REQ *prv; |
358 | |
412 | |
359 | while ((prv = reqq_shift (&req_queue))) |
413 | while ((prv = reqq_shift (&req_queue))) |
360 | ETP_DESTROY (prv); |
414 | ETP_DESTROY (prv); |
… | |
… | |
377 | idle = 0; |
431 | idle = 0; |
378 | nreqs = 0; |
432 | nreqs = 0; |
379 | nready = 0; |
433 | nready = 0; |
380 | npending = 0; |
434 | npending = 0; |
381 | |
435 | |
382 | etp_atfork_parent (); |
436 | etp_thread_init (); |
383 | } |
437 | } |
384 | |
438 | |
385 | static void |
439 | static void ecb_cold |
386 | etp_once_init (void) |
440 | etp_once_init (void) |
387 | { |
441 | { |
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442 | etp_thread_init (); |
388 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
443 | X_THREAD_ATFORK (etp_atfork_prepare, etp_atfork_parent, etp_atfork_child); |
389 | } |
444 | } |
390 | |
445 | |
391 | static int |
446 | static int ecb_cold |
392 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
447 | etp_init (void (*want_poll)(void), void (*done_poll)(void)) |
393 | { |
448 | { |
394 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
449 | static pthread_once_t doinit = PTHREAD_ONCE_INIT; |
395 | |
450 | |
396 | pthread_once (&doinit, etp_once_init); |
451 | pthread_once (&doinit, etp_once_init); |
… | |
… | |
401 | return 0; |
456 | return 0; |
402 | } |
457 | } |
403 | |
458 | |
404 | X_THREAD_PROC (etp_proc); |
459 | X_THREAD_PROC (etp_proc); |
405 | |
460 | |
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461 | static void ecb_cold |
406 | static void etp_start_thread (void) |
462 | etp_start_thread (void) |
407 | { |
463 | { |
408 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
464 | etp_worker *wrk = calloc (1, sizeof (etp_worker)); |
409 | |
465 | |
410 | /*TODO*/ |
466 | /*TODO*/ |
411 | assert (("unable to allocate worker thread data", wrk)); |
467 | assert (("unable to allocate worker thread data", wrk)); |
… | |
… | |
424 | free (wrk); |
480 | free (wrk); |
425 | |
481 | |
426 | X_UNLOCK (wrklock); |
482 | X_UNLOCK (wrklock); |
427 | } |
483 | } |
428 | |
484 | |
|
|
485 | static void |
429 | static void etp_maybe_start_thread (void) |
486 | etp_maybe_start_thread (void) |
430 | { |
487 | { |
431 | if (expect_true (etp_nthreads () >= wanted)) |
488 | if (ecb_expect_true (etp_nthreads () >= wanted)) |
432 | return; |
489 | return; |
433 | |
490 | |
434 | /* todo: maybe use idle here, but might be less exact */ |
491 | /* todo: maybe use idle here, but might be less exact */ |
435 | if (expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
492 | if (ecb_expect_true (0 <= (int)etp_nthreads () + (int)etp_npending () - (int)etp_nreqs ())) |
436 | return; |
493 | return; |
437 | |
494 | |
438 | etp_start_thread (); |
495 | etp_start_thread (); |
439 | } |
496 | } |
440 | |
497 | |
|
|
498 | static void ecb_cold |
441 | static void etp_end_thread (void) |
499 | etp_end_thread (void) |
442 | { |
500 | { |
443 | eio_req *req = calloc (1, sizeof (eio_req)); |
501 | eio_req *req = calloc (1, sizeof (eio_req)); |
444 | |
502 | |
445 | req->type = -1; |
503 | req->type = -1; |
446 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
504 | req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
… | |
… | |
453 | X_LOCK (wrklock); |
511 | X_LOCK (wrklock); |
454 | --started; |
512 | --started; |
455 | X_UNLOCK (wrklock); |
513 | X_UNLOCK (wrklock); |
456 | } |
514 | } |
457 | |
515 | |
458 | static int etp_poll (void) |
516 | static int |
|
|
517 | etp_poll (void) |
459 | { |
518 | { |
460 | unsigned int maxreqs; |
519 | unsigned int maxreqs; |
461 | unsigned int maxtime; |
520 | unsigned int maxtime; |
462 | struct timeval tv_start, tv_now; |
521 | struct timeval tv_start, tv_now; |
463 | |
522 | |
… | |
… | |
493 | |
552 | |
494 | X_LOCK (reqlock); |
553 | X_LOCK (reqlock); |
495 | --nreqs; |
554 | --nreqs; |
496 | X_UNLOCK (reqlock); |
555 | X_UNLOCK (reqlock); |
497 | |
556 | |
498 | if (expect_false (req->type == EIO_GROUP && req->size)) |
557 | if (ecb_expect_false (req->type == EIO_GROUP && req->size)) |
499 | { |
558 | { |
500 | req->int1 = 1; /* mark request as delayed */ |
559 | req->int1 = 1; /* mark request as delayed */ |
501 | continue; |
560 | continue; |
502 | } |
561 | } |
503 | else |
562 | else |
504 | { |
563 | { |
505 | int res = ETP_FINISH (req); |
564 | int res = ETP_FINISH (req); |
506 | if (expect_false (res)) |
565 | if (ecb_expect_false (res)) |
507 | return res; |
566 | return res; |
508 | } |
567 | } |
509 | |
568 | |
510 | if (expect_false (maxreqs && !--maxreqs)) |
569 | if (ecb_expect_false (maxreqs && !--maxreqs)) |
511 | break; |
570 | break; |
512 | |
571 | |
513 | if (maxtime) |
572 | if (maxtime) |
514 | { |
573 | { |
515 | gettimeofday (&tv_now, 0); |
574 | gettimeofday (&tv_now, 0); |
… | |
… | |
521 | |
580 | |
522 | errno = EAGAIN; |
581 | errno = EAGAIN; |
523 | return -1; |
582 | return -1; |
524 | } |
583 | } |
525 | |
584 | |
|
|
585 | static void |
526 | static void etp_cancel (ETP_REQ *req) |
586 | etp_cancel (ETP_REQ *req) |
527 | { |
587 | { |
528 | X_LOCK (wrklock); |
588 | X_LOCK (wrklock); |
529 | req->flags |= EIO_FLAG_CANCELLED; |
589 | req->flags |= EIO_FLAG_CANCELLED; |
530 | X_UNLOCK (wrklock); |
590 | X_UNLOCK (wrklock); |
531 | |
591 | |
532 | eio_grp_cancel (req); |
592 | eio_grp_cancel (req); |
533 | } |
593 | } |
534 | |
594 | |
|
|
595 | static void |
535 | static void etp_submit (ETP_REQ *req) |
596 | etp_submit (ETP_REQ *req) |
536 | { |
597 | { |
537 | req->pri -= ETP_PRI_MIN; |
598 | req->pri -= ETP_PRI_MIN; |
538 | |
599 | |
539 | if (expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
600 | if (ecb_expect_false (req->pri < ETP_PRI_MIN - ETP_PRI_MIN)) req->pri = ETP_PRI_MIN - ETP_PRI_MIN; |
540 | if (expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
601 | if (ecb_expect_false (req->pri > ETP_PRI_MAX - ETP_PRI_MIN)) req->pri = ETP_PRI_MAX - ETP_PRI_MIN; |
541 | |
602 | |
542 | if (expect_false (req->type == EIO_GROUP)) |
603 | if (ecb_expect_false (req->type == EIO_GROUP)) |
543 | { |
604 | { |
544 | /* I hope this is worth it :/ */ |
605 | /* I hope this is worth it :/ */ |
545 | X_LOCK (reqlock); |
606 | X_LOCK (reqlock); |
546 | ++nreqs; |
607 | ++nreqs; |
547 | X_UNLOCK (reqlock); |
608 | X_UNLOCK (reqlock); |
… | |
… | |
566 | |
627 | |
567 | etp_maybe_start_thread (); |
628 | etp_maybe_start_thread (); |
568 | } |
629 | } |
569 | } |
630 | } |
570 | |
631 | |
|
|
632 | static void ecb_cold |
571 | static void etp_set_max_poll_time (double nseconds) |
633 | etp_set_max_poll_time (double nseconds) |
572 | { |
634 | { |
573 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
635 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
574 | max_poll_time = nseconds; |
636 | max_poll_time = nseconds * EIO_TICKS; |
575 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
637 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
576 | } |
638 | } |
577 | |
639 | |
|
|
640 | static void ecb_cold |
578 | static void etp_set_max_poll_reqs (unsigned int maxreqs) |
641 | etp_set_max_poll_reqs (unsigned int maxreqs) |
579 | { |
642 | { |
580 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
643 | if (WORDACCESS_UNSAFE) X_LOCK (reslock); |
581 | max_poll_reqs = maxreqs; |
644 | max_poll_reqs = maxreqs; |
582 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
645 | if (WORDACCESS_UNSAFE) X_UNLOCK (reslock); |
583 | } |
646 | } |
584 | |
647 | |
|
|
648 | static void ecb_cold |
585 | static void etp_set_max_idle (unsigned int nthreads) |
649 | etp_set_max_idle (unsigned int nthreads) |
586 | { |
650 | { |
587 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
651 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
588 | max_idle = nthreads <= 0 ? 1 : nthreads; |
652 | max_idle = nthreads; |
589 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
653 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
590 | } |
654 | } |
591 | |
655 | |
|
|
656 | static void ecb_cold |
|
|
657 | etp_set_idle_timeout (unsigned int seconds) |
|
|
658 | { |
|
|
659 | if (WORDACCESS_UNSAFE) X_LOCK (reqlock); |
|
|
660 | idle_timeout = seconds; |
|
|
661 | if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock); |
|
|
662 | } |
|
|
663 | |
|
|
664 | static void ecb_cold |
592 | static void etp_set_min_parallel (unsigned int nthreads) |
665 | etp_set_min_parallel (unsigned int nthreads) |
593 | { |
666 | { |
594 | if (wanted < nthreads) |
667 | if (wanted < nthreads) |
595 | wanted = nthreads; |
668 | wanted = nthreads; |
596 | } |
669 | } |
597 | |
670 | |
|
|
671 | static void ecb_cold |
598 | static void etp_set_max_parallel (unsigned int nthreads) |
672 | etp_set_max_parallel (unsigned int nthreads) |
599 | { |
673 | { |
600 | if (wanted > nthreads) |
674 | if (wanted > nthreads) |
601 | wanted = nthreads; |
675 | wanted = nthreads; |
602 | |
676 | |
603 | while (started > wanted) |
677 | while (started > wanted) |
604 | etp_end_thread (); |
678 | etp_end_thread (); |
605 | } |
679 | } |
606 | |
680 | |
607 | /*****************************************************************************/ |
681 | /*****************************************************************************/ |
608 | |
682 | |
|
|
683 | static void |
609 | static void grp_try_feed (eio_req *grp) |
684 | grp_try_feed (eio_req *grp) |
610 | { |
685 | { |
611 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
686 | while (grp->size < grp->int2 && !EIO_CANCELLED (grp)) |
612 | { |
687 | { |
613 | grp->flags &= ~EIO_FLAG_GROUPADD; |
688 | grp->flags &= ~EIO_FLAG_GROUPADD; |
614 | |
689 | |
… | |
… | |
621 | break; |
696 | break; |
622 | } |
697 | } |
623 | } |
698 | } |
624 | } |
699 | } |
625 | |
700 | |
|
|
701 | static int |
626 | static int grp_dec (eio_req *grp) |
702 | grp_dec (eio_req *grp) |
627 | { |
703 | { |
628 | --grp->size; |
704 | --grp->size; |
629 | |
705 | |
630 | /* call feeder, if applicable */ |
706 | /* call feeder, if applicable */ |
631 | grp_try_feed (grp); |
707 | grp_try_feed (grp); |
… | |
… | |
635 | return eio_finish (grp); |
711 | return eio_finish (grp); |
636 | else |
712 | else |
637 | return 0; |
713 | return 0; |
638 | } |
714 | } |
639 | |
715 | |
|
|
716 | void |
640 | void eio_destroy (eio_req *req) |
717 | eio_destroy (eio_req *req) |
641 | { |
718 | { |
642 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
719 | if ((req)->flags & EIO_FLAG_PTR1_FREE) free (req->ptr1); |
643 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
720 | if ((req)->flags & EIO_FLAG_PTR2_FREE) free (req->ptr2); |
644 | |
721 | |
645 | EIO_DESTROY (req); |
722 | EIO_DESTROY (req); |
646 | } |
723 | } |
647 | |
724 | |
|
|
725 | static int |
648 | static int eio_finish (eio_req *req) |
726 | eio_finish (eio_req *req) |
649 | { |
727 | { |
650 | int res = EIO_FINISH (req); |
728 | int res = EIO_FINISH (req); |
651 | |
729 | |
652 | if (req->grp) |
730 | if (req->grp) |
653 | { |
731 | { |
… | |
… | |
670 | eio_destroy (req); |
748 | eio_destroy (req); |
671 | |
749 | |
672 | return res; |
750 | return res; |
673 | } |
751 | } |
674 | |
752 | |
|
|
753 | void |
675 | void eio_grp_cancel (eio_req *grp) |
754 | eio_grp_cancel (eio_req *grp) |
676 | { |
755 | { |
677 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
756 | for (grp = grp->grp_first; grp; grp = grp->grp_next) |
678 | eio_cancel (grp); |
757 | eio_cancel (grp); |
679 | } |
758 | } |
680 | |
759 | |
|
|
760 | void |
681 | void eio_cancel (eio_req *req) |
761 | eio_cancel (eio_req *req) |
682 | { |
762 | { |
683 | etp_cancel (req); |
763 | etp_cancel (req); |
684 | } |
764 | } |
685 | |
765 | |
|
|
766 | void |
686 | void eio_submit (eio_req *req) |
767 | eio_submit (eio_req *req) |
687 | { |
768 | { |
688 | etp_submit (req); |
769 | etp_submit (req); |
689 | } |
770 | } |
690 | |
771 | |
691 | unsigned int eio_nreqs (void) |
772 | unsigned int |
|
|
773 | eio_nreqs (void) |
692 | { |
774 | { |
693 | return etp_nreqs (); |
775 | return etp_nreqs (); |
694 | } |
776 | } |
695 | |
777 | |
696 | unsigned int eio_nready (void) |
778 | unsigned int |
|
|
779 | eio_nready (void) |
697 | { |
780 | { |
698 | return etp_nready (); |
781 | return etp_nready (); |
699 | } |
782 | } |
700 | |
783 | |
701 | unsigned int eio_npending (void) |
784 | unsigned int |
|
|
785 | eio_npending (void) |
702 | { |
786 | { |
703 | return etp_npending (); |
787 | return etp_npending (); |
704 | } |
788 | } |
705 | |
789 | |
706 | unsigned int eio_nthreads (void) |
790 | unsigned int ecb_cold |
|
|
791 | eio_nthreads (void) |
707 | { |
792 | { |
708 | return etp_nthreads (); |
793 | return etp_nthreads (); |
709 | } |
794 | } |
710 | |
795 | |
|
|
796 | void ecb_cold |
711 | void eio_set_max_poll_time (double nseconds) |
797 | eio_set_max_poll_time (double nseconds) |
712 | { |
798 | { |
713 | etp_set_max_poll_time (nseconds); |
799 | etp_set_max_poll_time (nseconds); |
714 | } |
800 | } |
715 | |
801 | |
|
|
802 | void ecb_cold |
716 | void eio_set_max_poll_reqs (unsigned int maxreqs) |
803 | eio_set_max_poll_reqs (unsigned int maxreqs) |
717 | { |
804 | { |
718 | etp_set_max_poll_reqs (maxreqs); |
805 | etp_set_max_poll_reqs (maxreqs); |
719 | } |
806 | } |
720 | |
807 | |
|
|
808 | void ecb_cold |
721 | void eio_set_max_idle (unsigned int nthreads) |
809 | eio_set_max_idle (unsigned int nthreads) |
722 | { |
810 | { |
723 | etp_set_max_idle (nthreads); |
811 | etp_set_max_idle (nthreads); |
724 | } |
812 | } |
725 | |
813 | |
|
|
814 | void ecb_cold |
|
|
815 | eio_set_idle_timeout (unsigned int seconds) |
|
|
816 | { |
|
|
817 | etp_set_idle_timeout (seconds); |
|
|
818 | } |
|
|
819 | |
|
|
820 | void ecb_cold |
726 | void eio_set_min_parallel (unsigned int nthreads) |
821 | eio_set_min_parallel (unsigned int nthreads) |
727 | { |
822 | { |
728 | etp_set_min_parallel (nthreads); |
823 | etp_set_min_parallel (nthreads); |
729 | } |
824 | } |
730 | |
825 | |
|
|
826 | void ecb_cold |
731 | void eio_set_max_parallel (unsigned int nthreads) |
827 | eio_set_max_parallel (unsigned int nthreads) |
732 | { |
828 | { |
733 | etp_set_max_parallel (nthreads); |
829 | etp_set_max_parallel (nthreads); |
734 | } |
830 | } |
735 | |
831 | |
736 | int eio_poll (void) |
832 | int eio_poll (void) |
… | |
… | |
778 | |
874 | |
779 | return res; |
875 | return res; |
780 | } |
876 | } |
781 | #endif |
877 | #endif |
782 | |
878 | |
783 | #ifndef HAVE_FUTIMES |
879 | #ifndef HAVE_UTIMES |
784 | |
880 | |
785 | # undef utimes |
881 | # undef utimes |
786 | # undef futimes |
|
|
787 | # define utimes(path,times) eio__utimes (path, times) |
882 | # define utimes(path,times) eio__utimes (path, times) |
788 | # define futimes(fd,times) eio__futimes (fd, times) |
|
|
789 | |
883 | |
790 | static int |
884 | static int |
791 | eio__utimes (const char *filename, const struct timeval times[2]) |
885 | eio__utimes (const char *filename, const struct timeval times[2]) |
792 | { |
886 | { |
793 | if (times) |
887 | if (times) |
… | |
… | |
801 | } |
895 | } |
802 | else |
896 | else |
803 | return utime (filename, 0); |
897 | return utime (filename, 0); |
804 | } |
898 | } |
805 | |
899 | |
|
|
900 | #endif |
|
|
901 | |
|
|
902 | #ifndef HAVE_FUTIMES |
|
|
903 | |
|
|
904 | # undef futimes |
|
|
905 | # define futimes(fd,times) eio__futimes (fd, times) |
|
|
906 | |
|
|
907 | static int |
806 | static int eio__futimes (int fd, const struct timeval tv[2]) |
908 | eio__futimes (int fd, const struct timeval tv[2]) |
807 | { |
909 | { |
808 | errno = ENOSYS; |
910 | errno = ENOSYS; |
809 | return -1; |
911 | return -1; |
810 | } |
912 | } |
811 | |
913 | |
… | |
… | |
815 | # undef fdatasync |
917 | # undef fdatasync |
816 | # define fdatasync(fd) fsync (fd) |
918 | # define fdatasync(fd) fsync (fd) |
817 | #endif |
919 | #endif |
818 | |
920 | |
819 | /* sync_file_range always needs emulation */ |
921 | /* sync_file_range always needs emulation */ |
820 | int |
922 | static int |
821 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
923 | eio__sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags) |
822 | { |
924 | { |
823 | #if HAVE_SYNC_FILE_RANGE |
925 | #if HAVE_SYNC_FILE_RANGE |
824 | int res; |
926 | int res; |
825 | |
927 | |
… | |
… | |
838 | if (!res || errno != ENOSYS) |
940 | if (!res || errno != ENOSYS) |
839 | return res; |
941 | return res; |
840 | #endif |
942 | #endif |
841 | |
943 | |
842 | /* even though we could play tricks with the flags, it's better to always |
944 | /* even though we could play tricks with the flags, it's better to always |
843 | * call fdatasync, as thta matches the expectation of it's users best */ |
945 | * call fdatasync, as that matches the expectation of its users best */ |
844 | return fdatasync (fd); |
946 | return fdatasync (fd); |
845 | } |
947 | } |
846 | |
948 | |
847 | #if !HAVE_READAHEAD |
949 | #if !HAVE_READAHEAD |
848 | # undef readahead |
950 | # undef readahead |
… | |
… | |
871 | |
973 | |
872 | /* sendfile always needs emulation */ |
974 | /* sendfile always needs emulation */ |
873 | static ssize_t |
975 | static ssize_t |
874 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
976 | eio__sendfile (int ofd, int ifd, off_t offset, size_t count, etp_worker *self) |
875 | { |
977 | { |
|
|
978 | ssize_t written = 0; |
876 | ssize_t res; |
979 | ssize_t res; |
877 | |
980 | |
878 | if (!count) |
981 | if (!count) |
879 | return 0; |
982 | return 0; |
880 | |
983 | |
|
|
984 | for (;;) |
|
|
985 | { |
881 | #if HAVE_SENDFILE |
986 | #if HAVE_SENDFILE |
882 | # if __linux |
987 | # if __linux |
|
|
988 | off_t soffset = offset; |
883 | res = sendfile (ofd, ifd, &offset, count); |
989 | res = sendfile (ofd, ifd, &soffset, count); |
884 | |
990 | |
885 | # elif __freebsd |
991 | # elif __FreeBSD__ |
886 | /* |
992 | /* |
887 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
993 | * Of course, the freebsd sendfile is a dire hack with no thoughts |
888 | * wasted on making it similar to other I/O functions. |
994 | * wasted on making it similar to other I/O functions. |
889 | */ |
995 | */ |
890 | { |
|
|
891 | off_t sbytes; |
996 | off_t sbytes; |
892 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
997 | res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0); |
893 | |
998 | |
894 | if (res < 0 && sbytes) |
999 | #if 0 /* according to the manpage, this is correct, but broken behaviour */ |
895 | /* maybe only on EAGAIN: as usual, the manpage leaves you guessing */ |
1000 | /* freebsd' sendfile will return 0 on success */ |
|
|
1001 | /* freebsd 8 documents it as only setting *sbytes on EINTR and EAGAIN, but */ |
|
|
1002 | /* not on e.g. EIO or EPIPE - sounds broken */ |
|
|
1003 | if ((res < 0 && (errno == EAGAIN || errno == EINTR) && sbytes) || res == 0) |
896 | res = sbytes; |
1004 | res = sbytes; |
897 | } |
1005 | #endif |
|
|
1006 | |
|
|
1007 | /* according to source inspection, this is correct, and useful behaviour */ |
|
|
1008 | if (sbytes) |
|
|
1009 | res = sbytes; |
|
|
1010 | |
|
|
1011 | # elif defined (__APPLE__) |
|
|
1012 | off_t sbytes = count; |
|
|
1013 | res = sendfile (ifd, ofd, offset, &sbytes, 0, 0); |
|
|
1014 | |
|
|
1015 | /* according to the manpage, sbytes is always valid */ |
|
|
1016 | if (sbytes) |
|
|
1017 | res = sbytes; |
898 | |
1018 | |
899 | # elif __hpux |
1019 | # elif __hpux |
900 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
1020 | res = sendfile (ofd, ifd, offset, count, 0, 0); |
901 | |
1021 | |
902 | # elif __solaris |
1022 | # elif __solaris |
903 | { |
|
|
904 | struct sendfilevec vec; |
1023 | struct sendfilevec vec; |
905 | size_t sbytes; |
1024 | size_t sbytes; |
906 | |
1025 | |
907 | vec.sfv_fd = ifd; |
1026 | vec.sfv_fd = ifd; |
908 | vec.sfv_flag = 0; |
1027 | vec.sfv_flag = 0; |
909 | vec.sfv_off = offset; |
1028 | vec.sfv_off = offset; |
910 | vec.sfv_len = count; |
1029 | vec.sfv_len = count; |
911 | |
1030 | |
912 | res = sendfilev (ofd, &vec, 1, &sbytes); |
1031 | res = sendfilev (ofd, &vec, 1, &sbytes); |
913 | |
1032 | |
914 | if (res < 0 && sbytes) |
1033 | if (res < 0 && sbytes) |
915 | res = sbytes; |
1034 | res = sbytes; |
916 | } |
|
|
917 | |
1035 | |
918 | # endif |
1036 | # endif |
|
|
1037 | |
|
|
1038 | #elif defined (_WIN32) |
|
|
1039 | /* does not work, just for documentation of what would need to be done */ |
|
|
1040 | /* actually, cannot be done like this, as TransmitFile changes the file offset, */ |
|
|
1041 | /* libeio guarantees that the file offset does not change, and windows */ |
|
|
1042 | /* has no way to get an independent handle to the same file description */ |
|
|
1043 | HANDLE h = TO_SOCKET (ifd); |
|
|
1044 | SetFilePointer (h, offset, 0, FILE_BEGIN); |
|
|
1045 | res = TransmitFile (TO_SOCKET (ofd), h, count, 0, 0, 0, 0); |
|
|
1046 | |
919 | #else |
1047 | #else |
920 | res = -1; |
1048 | res = -1; |
921 | errno = ENOSYS; |
1049 | errno = ENOSYS; |
922 | #endif |
1050 | #endif |
923 | |
1051 | |
|
|
1052 | /* we assume sendfile can copy at least 128mb in one go */ |
|
|
1053 | if (res <= 128 * 1024 * 1024) |
|
|
1054 | { |
|
|
1055 | if (res > 0) |
|
|
1056 | written += res; |
|
|
1057 | |
|
|
1058 | if (written) |
|
|
1059 | return written; |
|
|
1060 | |
|
|
1061 | break; |
|
|
1062 | } |
|
|
1063 | else |
|
|
1064 | { |
|
|
1065 | /* if we requested more, then probably the kernel was lazy */ |
|
|
1066 | written += res; |
|
|
1067 | offset += res; |
|
|
1068 | count -= res; |
|
|
1069 | |
|
|
1070 | if (!count) |
|
|
1071 | return written; |
|
|
1072 | } |
|
|
1073 | } |
|
|
1074 | |
924 | if (res < 0 |
1075 | if (res < 0 |
925 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
1076 | && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK |
|
|
1077 | /* BSDs */ |
|
|
1078 | #ifdef ENOTSUP /* sigh, if the steenking pile called openbsd would only try to at least compile posix code... */ |
|
|
1079 | || errno == ENOTSUP |
|
|
1080 | #endif |
|
|
1081 | || errno == EOPNOTSUPP /* BSDs */ |
926 | #if __solaris |
1082 | #if __solaris |
927 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
1083 | || errno == EAFNOSUPPORT || errno == EPROTOTYPE |
928 | #endif |
1084 | #endif |
929 | ) |
1085 | ) |
930 | ) |
1086 | ) |
… | |
… | |
961 | } |
1117 | } |
962 | |
1118 | |
963 | return res; |
1119 | return res; |
964 | } |
1120 | } |
965 | |
1121 | |
|
|
1122 | static signed char |
|
|
1123 | eio_dent_cmp (const eio_dirent *a, const eio_dirent *b) |
|
|
1124 | { |
|
|
1125 | return a->score - b->score ? a->score - b->score /* works because our signed char is always 0..100 */ |
|
|
1126 | : a->inode < b->inode ? -1 |
|
|
1127 | : a->inode > b->inode ? 1 |
|
|
1128 | : 0; |
|
|
1129 | } |
|
|
1130 | |
|
|
1131 | #define EIO_DENT_CMP(i,op,j) eio_dent_cmp (&i, &j) op 0 |
|
|
1132 | |
|
|
1133 | #define EIO_SORT_CUTOFF 30 /* quite high, but performs well on many filesystems */ |
|
|
1134 | #define EIO_SORT_FAST 60 /* when to only use insertion sort */ |
|
|
1135 | |
|
|
1136 | static void |
|
|
1137 | eio_dent_radix_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits) |
|
|
1138 | { |
|
|
1139 | unsigned char bits [9 + sizeof (ino_t) * 8]; |
|
|
1140 | unsigned char *bit = bits; |
|
|
1141 | |
|
|
1142 | assert (CHAR_BIT == 8); |
|
|
1143 | assert (sizeof (eio_dirent) * 8 < 256); |
|
|
1144 | assert (offsetof (eio_dirent, inode)); /* we use bit #0 as sentinel */ |
|
|
1145 | assert (offsetof (eio_dirent, score)); /* we use bit #0 as sentinel */ |
|
|
1146 | |
|
|
1147 | if (size <= EIO_SORT_FAST) |
|
|
1148 | return; |
|
|
1149 | |
|
|
1150 | /* first prepare an array of bits to test in our radix sort */ |
|
|
1151 | /* try to take endianness into account, as well as differences in ino_t sizes */ |
|
|
1152 | /* inode_bits must contain all inodes ORed together */ |
|
|
1153 | /* which is used to skip bits that are 0 everywhere, which is very common */ |
|
|
1154 | { |
|
|
1155 | ino_t endianness; |
|
|
1156 | int i, j; |
|
|
1157 | |
|
|
1158 | /* we store the byte offset of byte n into byte n of "endianness" */ |
|
|
1159 | for (i = 0; i < sizeof (ino_t); ++i) |
|
|
1160 | ((unsigned char *)&endianness)[i] = i; |
|
|
1161 | |
|
|
1162 | *bit++ = 0; |
|
|
1163 | |
|
|
1164 | for (i = 0; i < sizeof (ino_t); ++i) |
|
|
1165 | { |
|
|
1166 | /* shifting off the byte offsets out of "endianness" */ |
|
|
1167 | int offs = (offsetof (eio_dirent, inode) + (endianness & 0xff)) * 8; |
|
|
1168 | endianness >>= 8; |
|
|
1169 | |
|
|
1170 | for (j = 0; j < 8; ++j) |
|
|
1171 | if (inode_bits & (((ino_t)1) << (i * 8 + j))) |
|
|
1172 | *bit++ = offs + j; |
|
|
1173 | } |
|
|
1174 | |
|
|
1175 | for (j = 0; j < 8; ++j) |
|
|
1176 | if (score_bits & (1 << j)) |
|
|
1177 | *bit++ = offsetof (eio_dirent, score) * 8 + j; |
|
|
1178 | } |
|
|
1179 | |
|
|
1180 | /* now actually do the sorting (a variant of MSD radix sort) */ |
|
|
1181 | { |
|
|
1182 | eio_dirent *base_stk [9 + sizeof (ino_t) * 8], *base; |
|
|
1183 | eio_dirent *end_stk [9 + sizeof (ino_t) * 8], *end; |
|
|
1184 | unsigned char *bit_stk [9 + sizeof (ino_t) * 8]; |
|
|
1185 | int stk_idx = 0; |
|
|
1186 | |
|
|
1187 | base_stk [stk_idx] = dents; |
|
|
1188 | end_stk [stk_idx] = dents + size; |
|
|
1189 | bit_stk [stk_idx] = bit - 1; |
|
|
1190 | |
|
|
1191 | do |
|
|
1192 | { |
|
|
1193 | base = base_stk [stk_idx]; |
|
|
1194 | end = end_stk [stk_idx]; |
|
|
1195 | bit = bit_stk [stk_idx]; |
|
|
1196 | |
|
|
1197 | for (;;) |
|
|
1198 | { |
|
|
1199 | unsigned char O = *bit >> 3; |
|
|
1200 | unsigned char M = 1 << (*bit & 7); |
|
|
1201 | |
|
|
1202 | eio_dirent *a = base; |
|
|
1203 | eio_dirent *b = end; |
|
|
1204 | |
|
|
1205 | if (b - a < EIO_SORT_CUTOFF) |
|
|
1206 | break; |
|
|
1207 | |
|
|
1208 | /* now bit-partition the array on the bit */ |
|
|
1209 | /* this ugly asymmetric loop seems to perform much better than typical */ |
|
|
1210 | /* partition algos found in the literature */ |
|
|
1211 | do |
|
|
1212 | if (!(((unsigned char *)a)[O] & M)) |
|
|
1213 | ++a; |
|
|
1214 | else if (!(((unsigned char *)--b)[O] & M)) |
|
|
1215 | { |
|
|
1216 | eio_dirent tmp = *a; *a = *b; *b = tmp; |
|
|
1217 | ++a; |
|
|
1218 | } |
|
|
1219 | while (b > a); |
|
|
1220 | |
|
|
1221 | /* next bit, or stop, if no bits left in this path */ |
|
|
1222 | if (!*--bit) |
|
|
1223 | break; |
|
|
1224 | |
|
|
1225 | base_stk [stk_idx] = a; |
|
|
1226 | end_stk [stk_idx] = end; |
|
|
1227 | bit_stk [stk_idx] = bit; |
|
|
1228 | ++stk_idx; |
|
|
1229 | |
|
|
1230 | end = a; |
|
|
1231 | } |
|
|
1232 | } |
|
|
1233 | while (stk_idx--); |
|
|
1234 | } |
|
|
1235 | } |
|
|
1236 | |
|
|
1237 | static void |
|
|
1238 | eio_dent_insertion_sort (eio_dirent *dents, int size) |
|
|
1239 | { |
|
|
1240 | /* first move the smallest element to the front, to act as a sentinel */ |
|
|
1241 | { |
|
|
1242 | int i; |
|
|
1243 | eio_dirent *min = dents; |
|
|
1244 | |
|
|
1245 | /* the radix pre-pass ensures that the minimum element is in the first EIO_SORT_CUTOFF + 1 elements */ |
|
|
1246 | for (i = size > EIO_SORT_FAST ? EIO_SORT_CUTOFF + 1 : size; --i; ) |
|
|
1247 | if (EIO_DENT_CMP (dents [i], <, *min)) |
|
|
1248 | min = &dents [i]; |
|
|
1249 | |
|
|
1250 | /* swap elements 0 and j (minimum) */ |
|
|
1251 | { |
|
|
1252 | eio_dirent tmp = *dents; *dents = *min; *min = tmp; |
|
|
1253 | } |
|
|
1254 | } |
|
|
1255 | |
|
|
1256 | /* then do standard insertion sort, assuming that all elements are >= dents [0] */ |
|
|
1257 | { |
|
|
1258 | eio_dirent *i, *j; |
|
|
1259 | |
|
|
1260 | for (i = dents + 1; i < dents + size; ++i) |
|
|
1261 | { |
|
|
1262 | eio_dirent value = *i; |
|
|
1263 | |
|
|
1264 | for (j = i - 1; EIO_DENT_CMP (*j, >, value); --j) |
|
|
1265 | j [1] = j [0]; |
|
|
1266 | |
|
|
1267 | j [1] = value; |
|
|
1268 | } |
|
|
1269 | } |
|
|
1270 | } |
|
|
1271 | |
|
|
1272 | static void |
|
|
1273 | eio_dent_sort (eio_dirent *dents, int size, signed char score_bits, ino_t inode_bits) |
|
|
1274 | { |
|
|
1275 | if (size <= 1) |
|
|
1276 | return; /* our insertion sort relies on size > 0 */ |
|
|
1277 | |
|
|
1278 | /* first we use a radix sort, but only for dirs >= EIO_SORT_FAST */ |
|
|
1279 | /* and stop sorting when the partitions are <= EIO_SORT_CUTOFF */ |
|
|
1280 | eio_dent_radix_sort (dents, size, score_bits, inode_bits); |
|
|
1281 | |
|
|
1282 | /* use an insertion sort at the end, or for small arrays, */ |
|
|
1283 | /* as insertion sort is more efficient for small partitions */ |
|
|
1284 | eio_dent_insertion_sort (dents, size); |
|
|
1285 | } |
|
|
1286 | |
966 | /* read a full directory */ |
1287 | /* read a full directory */ |
967 | static void |
1288 | static void |
968 | eio__scandir (eio_req *req, etp_worker *self) |
1289 | eio__scandir (eio_req *req, etp_worker *self) |
969 | { |
1290 | { |
970 | DIR *dirp; |
1291 | DIR *dirp; |
971 | EIO_STRUCT_DIRENT *entp; |
1292 | EIO_STRUCT_DIRENT *entp; |
972 | char *name, *names; |
1293 | char *name, *names; |
973 | int memlen = 4096; |
1294 | int namesalloc = 4096; |
974 | int memofs = 0; |
1295 | int namesoffs = 0; |
|
|
1296 | int flags = req->int1; |
|
|
1297 | eio_dirent *dents = 0; |
|
|
1298 | int dentalloc = 128; |
975 | int res = 0; |
1299 | int dentoffs = 0; |
|
|
1300 | ino_t inode_bits = 0; |
|
|
1301 | |
|
|
1302 | req->result = -1; |
|
|
1303 | |
|
|
1304 | if (!(flags & EIO_READDIR_DENTS)) |
|
|
1305 | flags &= ~(EIO_READDIR_DIRS_FIRST | EIO_READDIR_STAT_ORDER); |
976 | |
1306 | |
977 | X_LOCK (wrklock); |
1307 | X_LOCK (wrklock); |
978 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
1308 | /* the corresponding closedir is in ETP_WORKER_CLEAR */ |
979 | self->dirp = dirp = opendir (req->ptr1); |
1309 | self->dirp = dirp = opendir (req->ptr1); |
|
|
1310 | |
980 | req->flags |= EIO_FLAG_PTR2_FREE; |
1311 | if (req->flags & EIO_FLAG_PTR1_FREE) |
|
|
1312 | free (req->ptr1); |
|
|
1313 | |
|
|
1314 | req->flags |= EIO_FLAG_PTR1_FREE | EIO_FLAG_PTR2_FREE; |
|
|
1315 | req->ptr1 = dents = flags ? malloc (dentalloc * sizeof (eio_dirent)) : 0; |
981 | req->ptr2 = names = malloc (memlen); |
1316 | req->ptr2 = names = malloc (namesalloc); |
982 | X_UNLOCK (wrklock); |
1317 | X_UNLOCK (wrklock); |
983 | |
1318 | |
984 | if (dirp && names) |
1319 | if (dirp && names && (!flags || dents)) |
985 | for (;;) |
1320 | for (;;) |
986 | { |
1321 | { |
987 | errno = 0; |
1322 | errno = 0; |
988 | entp = readdir (dirp); |
1323 | entp = readdir (dirp); |
989 | |
1324 | |
990 | if (!entp) |
1325 | if (!entp) |
|
|
1326 | { |
|
|
1327 | if (errno) |
|
|
1328 | break; |
|
|
1329 | |
|
|
1330 | /* sort etc. */ |
|
|
1331 | req->int1 = flags; |
|
|
1332 | req->result = dentoffs; |
|
|
1333 | |
|
|
1334 | if (flags & EIO_READDIR_STAT_ORDER) |
|
|
1335 | eio_dent_sort (dents, dentoffs, flags & EIO_READDIR_DIRS_FIRST ? 7 : 0, inode_bits); |
|
|
1336 | else if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1337 | if (flags & EIO_READDIR_FOUND_UNKNOWN) |
|
|
1338 | eio_dent_sort (dents, dentoffs, 7, inode_bits); /* sort by score and inode */ |
|
|
1339 | else |
|
|
1340 | { |
|
|
1341 | /* in this case, all is known, and we just put dirs first and sort them */ |
|
|
1342 | eio_dirent *oth = dents + dentoffs; |
|
|
1343 | eio_dirent *dir = dents; |
|
|
1344 | |
|
|
1345 | /* now partition dirs to the front, and non-dirs to the back */ |
|
|
1346 | /* by walking from both sides and swapping if necessary */ |
|
|
1347 | while (oth > dir) |
|
|
1348 | { |
|
|
1349 | if (dir->type == EIO_DT_DIR) |
|
|
1350 | ++dir; |
|
|
1351 | else if ((--oth)->type == EIO_DT_DIR) |
|
|
1352 | { |
|
|
1353 | eio_dirent tmp = *dir; *dir = *oth; *oth = tmp; |
|
|
1354 | |
|
|
1355 | ++dir; |
|
|
1356 | } |
|
|
1357 | } |
|
|
1358 | |
|
|
1359 | /* now sort the dirs only (dirs all have the same score) */ |
|
|
1360 | eio_dent_sort (dents, dir - dents, 0, inode_bits); |
|
|
1361 | } |
|
|
1362 | |
991 | break; |
1363 | break; |
|
|
1364 | } |
992 | |
1365 | |
|
|
1366 | /* now add the entry to our list(s) */ |
993 | name = entp->d_name; |
1367 | name = entp->d_name; |
994 | |
1368 | |
|
|
1369 | /* skip . and .. entries */ |
995 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
1370 | if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2]))) |
996 | { |
1371 | { |
997 | int len = strlen (name) + 1; |
1372 | int len = D_NAMLEN (entp) + 1; |
998 | |
1373 | |
999 | res++; |
1374 | while (ecb_expect_false (namesoffs + len > namesalloc)) |
1000 | |
|
|
1001 | while (memofs + len > memlen) |
|
|
1002 | { |
1375 | { |
1003 | memlen *= 2; |
1376 | namesalloc *= 2; |
1004 | X_LOCK (wrklock); |
1377 | X_LOCK (wrklock); |
1005 | req->ptr2 = names = realloc (names, memlen); |
1378 | req->ptr2 = names = realloc (names, namesalloc); |
1006 | X_UNLOCK (wrklock); |
1379 | X_UNLOCK (wrklock); |
1007 | |
1380 | |
1008 | if (!names) |
1381 | if (!names) |
1009 | break; |
1382 | break; |
1010 | } |
1383 | } |
1011 | |
1384 | |
1012 | memcpy (names + memofs, name, len); |
1385 | memcpy (names + namesoffs, name, len); |
|
|
1386 | |
|
|
1387 | if (dents) |
|
|
1388 | { |
|
|
1389 | struct eio_dirent *ent; |
|
|
1390 | |
|
|
1391 | if (ecb_expect_false (dentoffs == dentalloc)) |
|
|
1392 | { |
|
|
1393 | dentalloc *= 2; |
|
|
1394 | X_LOCK (wrklock); |
|
|
1395 | req->ptr1 = dents = realloc (dents, dentalloc * sizeof (eio_dirent)); |
|
|
1396 | X_UNLOCK (wrklock); |
|
|
1397 | |
|
|
1398 | if (!dents) |
|
|
1399 | break; |
|
|
1400 | } |
|
|
1401 | |
|
|
1402 | ent = dents + dentoffs; |
|
|
1403 | |
|
|
1404 | ent->nameofs = namesoffs; /* rather dirtily we store the offset in the pointer */ |
|
|
1405 | ent->namelen = len - 1; |
|
|
1406 | ent->inode = D_INO (entp); |
|
|
1407 | |
|
|
1408 | inode_bits |= ent->inode; |
|
|
1409 | |
|
|
1410 | switch (D_TYPE (entp)) |
|
|
1411 | { |
|
|
1412 | default: |
|
|
1413 | ent->type = EIO_DT_UNKNOWN; |
|
|
1414 | flags |= EIO_READDIR_FOUND_UNKNOWN; |
|
|
1415 | break; |
|
|
1416 | |
|
|
1417 | #ifdef DT_FIFO |
|
|
1418 | case DT_FIFO: ent->type = EIO_DT_FIFO; break; |
|
|
1419 | #endif |
|
|
1420 | #ifdef DT_CHR |
|
|
1421 | case DT_CHR: ent->type = EIO_DT_CHR; break; |
|
|
1422 | #endif |
|
|
1423 | #ifdef DT_MPC |
|
|
1424 | case DT_MPC: ent->type = EIO_DT_MPC; break; |
|
|
1425 | #endif |
|
|
1426 | #ifdef DT_DIR |
|
|
1427 | case DT_DIR: ent->type = EIO_DT_DIR; break; |
|
|
1428 | #endif |
|
|
1429 | #ifdef DT_NAM |
|
|
1430 | case DT_NAM: ent->type = EIO_DT_NAM; break; |
|
|
1431 | #endif |
|
|
1432 | #ifdef DT_BLK |
|
|
1433 | case DT_BLK: ent->type = EIO_DT_BLK; break; |
|
|
1434 | #endif |
|
|
1435 | #ifdef DT_MPB |
|
|
1436 | case DT_MPB: ent->type = EIO_DT_MPB; break; |
|
|
1437 | #endif |
|
|
1438 | #ifdef DT_REG |
|
|
1439 | case DT_REG: ent->type = EIO_DT_REG; break; |
|
|
1440 | #endif |
|
|
1441 | #ifdef DT_NWK |
|
|
1442 | case DT_NWK: ent->type = EIO_DT_NWK; break; |
|
|
1443 | #endif |
|
|
1444 | #ifdef DT_CMP |
|
|
1445 | case DT_CMP: ent->type = EIO_DT_CMP; break; |
|
|
1446 | #endif |
|
|
1447 | #ifdef DT_LNK |
|
|
1448 | case DT_LNK: ent->type = EIO_DT_LNK; break; |
|
|
1449 | #endif |
|
|
1450 | #ifdef DT_SOCK |
|
|
1451 | case DT_SOCK: ent->type = EIO_DT_SOCK; break; |
|
|
1452 | #endif |
|
|
1453 | #ifdef DT_DOOR |
|
|
1454 | case DT_DOOR: ent->type = EIO_DT_DOOR; break; |
|
|
1455 | #endif |
|
|
1456 | #ifdef DT_WHT |
|
|
1457 | case DT_WHT: ent->type = EIO_DT_WHT; break; |
|
|
1458 | #endif |
|
|
1459 | } |
|
|
1460 | |
|
|
1461 | ent->score = 7; |
|
|
1462 | |
|
|
1463 | if (flags & EIO_READDIR_DIRS_FIRST) |
|
|
1464 | { |
|
|
1465 | if (ent->type == EIO_DT_UNKNOWN) |
|
|
1466 | { |
|
|
1467 | if (*name == '.') /* leading dots are likely directories, and, in any case, rare */ |
|
|
1468 | ent->score = 1; |
|
|
1469 | else if (!strchr (name, '.')) /* absense of dots indicate likely dirs */ |
|
|
1470 | ent->score = len <= 2 ? 4 - len : len <= 4 ? 4 : len <= 7 ? 5 : 6; /* shorter == more likely dir, but avoid too many classes */ |
|
|
1471 | } |
|
|
1472 | else if (ent->type == EIO_DT_DIR) |
|
|
1473 | ent->score = 0; |
|
|
1474 | } |
|
|
1475 | } |
|
|
1476 | |
1013 | memofs += len; |
1477 | namesoffs += len; |
|
|
1478 | ++dentoffs; |
|
|
1479 | } |
|
|
1480 | |
|
|
1481 | if (EIO_CANCELLED (req)) |
|
|
1482 | { |
|
|
1483 | errno = ECANCELED; |
|
|
1484 | break; |
1014 | } |
1485 | } |
1015 | } |
1486 | } |
1016 | |
|
|
1017 | if (errno) |
|
|
1018 | res = -1; |
|
|
1019 | |
|
|
1020 | req->result = res; |
|
|
1021 | } |
1487 | } |
1022 | |
1488 | |
1023 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
1024 | # undef msync |
|
|
1025 | # define msync(a,b,c) ((errno = ENOSYS), -1) |
|
|
1026 | #endif |
|
|
1027 | |
|
|
1028 | int |
|
|
1029 | eio__mtouch (void *mem, size_t len, int flags) |
|
|
1030 | { |
|
|
1031 | intptr_t addr = (intptr_t)mem; |
|
|
1032 | intptr_t end = addr + len; |
|
|
1033 | #ifdef PAGESIZE |
1489 | #ifdef PAGESIZE |
1034 | const intptr_t page = PAGESIZE; |
1490 | # define eio_pagesize() PAGESIZE |
1035 | #else |
1491 | #else |
|
|
1492 | static intptr_t |
|
|
1493 | eio_pagesize (void) |
|
|
1494 | { |
1036 | static intptr_t page; |
1495 | static intptr_t page; |
1037 | |
1496 | |
1038 | if (!page) |
1497 | if (!page) |
1039 | page = sysconf (_SC_PAGESIZE); |
1498 | page = sysconf (_SC_PAGESIZE); |
|
|
1499 | |
|
|
1500 | return page; |
|
|
1501 | } |
|
|
1502 | #endif |
|
|
1503 | |
|
|
1504 | static void |
|
|
1505 | eio_page_align (void **addr, size_t *length) |
|
|
1506 | { |
|
|
1507 | intptr_t mask = eio_pagesize () - 1; |
|
|
1508 | |
|
|
1509 | /* round down addr */ |
|
|
1510 | intptr_t adj = mask & (intptr_t)*addr; |
|
|
1511 | |
|
|
1512 | *addr = (void *)((intptr_t)*addr - adj); |
|
|
1513 | *length += adj; |
|
|
1514 | |
|
|
1515 | /* round up length */ |
|
|
1516 | *length = (*length + mask) & ~mask; |
|
|
1517 | } |
|
|
1518 | |
|
|
1519 | #if !_POSIX_MEMLOCK |
|
|
1520 | # define eio__mlockall(a) ((errno = ENOSYS), -1) |
|
|
1521 | #else |
|
|
1522 | |
|
|
1523 | static int |
|
|
1524 | eio__mlockall (int flags) |
|
|
1525 | { |
|
|
1526 | #if __GLIBC__ == 2 && __GLIBC_MINOR__ <= 7 |
|
|
1527 | extern int mallopt (int, int); |
|
|
1528 | mallopt (-6, 238); /* http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=473812 */ |
1040 | #endif |
1529 | #endif |
1041 | |
1530 | |
1042 | addr &= ~(page - 1); /* assume page size is always a power of two */ |
1531 | if (EIO_MCL_CURRENT != MCL_CURRENT |
|
|
1532 | || EIO_MCL_FUTURE != MCL_FUTURE) |
|
|
1533 | { |
|
|
1534 | flags = 0 |
|
|
1535 | | (flags & EIO_MCL_CURRENT ? MCL_CURRENT : 0) |
|
|
1536 | | (flags & EIO_MCL_FUTURE ? MCL_FUTURE : 0); |
|
|
1537 | } |
1043 | |
1538 | |
|
|
1539 | return mlockall (flags); |
|
|
1540 | } |
|
|
1541 | #endif |
|
|
1542 | |
|
|
1543 | #if !_POSIX_MEMLOCK_RANGE |
|
|
1544 | # define eio__mlock(a,b) ((errno = ENOSYS), -1) |
|
|
1545 | #else |
|
|
1546 | |
|
|
1547 | static int |
|
|
1548 | eio__mlock (void *addr, size_t length) |
|
|
1549 | { |
|
|
1550 | eio_page_align (&addr, &length); |
|
|
1551 | |
|
|
1552 | return mlock (addr, length); |
|
|
1553 | } |
|
|
1554 | |
|
|
1555 | #endif |
|
|
1556 | |
|
|
1557 | #if !(_POSIX_MAPPED_FILES && _POSIX_SYNCHRONIZED_IO) |
|
|
1558 | # define eio__msync(a,b,c) ((errno = ENOSYS), -1) |
|
|
1559 | #else |
|
|
1560 | |
|
|
1561 | static int |
|
|
1562 | eio__msync (void *mem, size_t len, int flags) |
|
|
1563 | { |
|
|
1564 | eio_page_align (&mem, &len); |
|
|
1565 | |
|
|
1566 | if (EIO_MS_ASYNC != MS_SYNC |
|
|
1567 | || EIO_MS_INVALIDATE != MS_INVALIDATE |
|
|
1568 | || EIO_MS_SYNC != MS_SYNC) |
|
|
1569 | { |
|
|
1570 | flags = 0 |
|
|
1571 | | (flags & EIO_MS_ASYNC ? MS_ASYNC : 0) |
|
|
1572 | | (flags & EIO_MS_INVALIDATE ? MS_INVALIDATE : 0) |
|
|
1573 | | (flags & EIO_MS_SYNC ? MS_SYNC : 0); |
|
|
1574 | } |
|
|
1575 | |
|
|
1576 | return msync (mem, len, flags); |
|
|
1577 | } |
|
|
1578 | |
|
|
1579 | #endif |
|
|
1580 | |
|
|
1581 | static int |
|
|
1582 | eio__mtouch (eio_req *req) |
|
|
1583 | { |
|
|
1584 | void *mem = req->ptr2; |
|
|
1585 | size_t len = req->size; |
|
|
1586 | int flags = req->int1; |
|
|
1587 | |
|
|
1588 | eio_page_align (&mem, &len); |
|
|
1589 | |
|
|
1590 | { |
|
|
1591 | intptr_t addr = (intptr_t)mem; |
|
|
1592 | intptr_t end = addr + len; |
|
|
1593 | intptr_t page = eio_pagesize (); |
|
|
1594 | |
1044 | if (addr < end) |
1595 | if (addr < end) |
1045 | if (flags) /* modify */ |
1596 | if (flags & EIO_MT_MODIFY) /* modify */ |
1046 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len); |
1597 | do { *((volatile sig_atomic_t *)addr) |= 0; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
1047 | else |
1598 | else |
1048 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len); |
1599 | do { *((volatile sig_atomic_t *)addr) ; } while ((addr += page) < len && !EIO_CANCELLED (req)); |
|
|
1600 | } |
1049 | |
1601 | |
1050 | return 0; |
1602 | return 0; |
1051 | } |
1603 | } |
1052 | |
1604 | |
1053 | /*****************************************************************************/ |
1605 | /*****************************************************************************/ |
… | |
… | |
1087 | if (req) |
1639 | if (req) |
1088 | break; |
1640 | break; |
1089 | |
1641 | |
1090 | ++idle; |
1642 | ++idle; |
1091 | |
1643 | |
1092 | ts.tv_sec = time (0) + IDLE_TIMEOUT; |
1644 | ts.tv_sec = time (0) + idle_timeout; |
1093 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1645 | if (X_COND_TIMEDWAIT (reqwait, reqlock, ts) == ETIMEDOUT) |
1094 | { |
1646 | { |
1095 | if (idle > max_idle) |
1647 | if (idle > max_idle) |
1096 | { |
1648 | { |
1097 | --idle; |
1649 | --idle; |
… | |
… | |
1140 | return 0; |
1692 | return 0; |
1141 | } |
1693 | } |
1142 | |
1694 | |
1143 | /*****************************************************************************/ |
1695 | /*****************************************************************************/ |
1144 | |
1696 | |
|
|
1697 | int ecb_cold |
1145 | int eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1698 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
1146 | { |
1699 | { |
1147 | return etp_init (want_poll, done_poll); |
1700 | return etp_init (want_poll, done_poll); |
1148 | } |
1701 | } |
1149 | |
1702 | |
|
|
1703 | ecb_inline void |
1150 | static void eio_api_destroy (eio_req *req) |
1704 | eio_api_destroy (eio_req *req) |
1151 | { |
1705 | { |
1152 | free (req); |
1706 | free (req); |
1153 | } |
1707 | } |
1154 | |
1708 | |
1155 | #define REQ(rtype) \ |
1709 | #define REQ(rtype) \ |
… | |
… | |
1174 | { \ |
1728 | { \ |
1175 | eio_api_destroy (req); \ |
1729 | eio_api_destroy (req); \ |
1176 | return 0; \ |
1730 | return 0; \ |
1177 | } |
1731 | } |
1178 | |
1732 | |
|
|
1733 | static void |
1179 | static void eio_execute (etp_worker *self, eio_req *req) |
1734 | eio_execute (etp_worker *self, eio_req *req) |
1180 | { |
1735 | { |
1181 | errno = 0; |
|
|
1182 | |
|
|
1183 | switch (req->type) |
1736 | switch (req->type) |
1184 | { |
1737 | { |
1185 | case EIO_READ: ALLOC (req->size); |
1738 | case EIO_READ: ALLOC (req->size); |
1186 | req->result = req->offs >= 0 |
1739 | req->result = req->offs >= 0 |
1187 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
1740 | ? pread (req->int1, req->ptr2, req->size, req->offs) |
… | |
… | |
1198 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1751 | case EIO_LSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1199 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1752 | req->result = lstat (req->ptr1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1200 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1753 | case EIO_FSTAT: ALLOC (sizeof (EIO_STRUCT_STAT)); |
1201 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1754 | req->result = fstat (req->int1, (EIO_STRUCT_STAT *)req->ptr2); break; |
1202 | |
1755 | |
|
|
1756 | case EIO_STATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
1757 | req->result = statvfs (req->ptr1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
1758 | case EIO_FSTATVFS: ALLOC (sizeof (EIO_STRUCT_STATVFS)); |
|
|
1759 | req->result = fstatvfs (req->int1, (EIO_STRUCT_STATVFS *)req->ptr2); break; |
|
|
1760 | |
1203 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
1761 | case EIO_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break; |
1204 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
1762 | case EIO_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break; |
1205 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
1763 | case EIO_CHMOD: req->result = chmod (req->ptr1, (mode_t)req->int2); break; |
1206 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
1764 | case EIO_FCHMOD: req->result = fchmod (req->int1, (mode_t)req->int2); break; |
1207 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
1765 | case EIO_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break; |
… | |
… | |
1214 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1772 | case EIO_RMDIR: req->result = rmdir (req->ptr1); break; |
1215 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1773 | case EIO_MKDIR: req->result = mkdir (req->ptr1, (mode_t)req->int2); break; |
1216 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1774 | case EIO_RENAME: req->result = rename (req->ptr1, req->ptr2); break; |
1217 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1775 | case EIO_LINK: req->result = link (req->ptr1, req->ptr2); break; |
1218 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1776 | case EIO_SYMLINK: req->result = symlink (req->ptr1, req->ptr2); break; |
1219 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->int3); break; |
1777 | case EIO_MKNOD: req->result = mknod (req->ptr1, (mode_t)req->int2, (dev_t)req->offs); break; |
1220 | |
1778 | |
1221 | case EIO_READLINK: ALLOC (NAME_MAX); |
1779 | case EIO_READLINK: ALLOC (PATH_MAX); |
1222 | req->result = readlink (req->ptr1, req->ptr2, NAME_MAX); break; |
1780 | req->result = readlink (req->ptr1, req->ptr2, PATH_MAX); break; |
1223 | |
1781 | |
1224 | case EIO_SYNC: req->result = 0; sync (); break; |
1782 | case EIO_SYNC: req->result = 0; sync (); break; |
1225 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1783 | case EIO_FSYNC: req->result = fsync (req->int1); break; |
1226 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1784 | case EIO_FDATASYNC: req->result = fdatasync (req->int1); break; |
1227 | case EIO_MSYNC: req->result = msync (req->ptr2, req->size, req->int1); break; |
1785 | case EIO_MSYNC: req->result = eio__msync (req->ptr2, req->size, req->int1); break; |
|
|
1786 | case EIO_MTOUCH: req->result = eio__mtouch (req); break; |
1228 | case EIO_MTOUCH: req->result = eio__mtouch (req->ptr2, req->size, req->int1); break; |
1787 | case EIO_MLOCK: req->result = eio__mlock (req->ptr2, req->size); break; |
|
|
1788 | case EIO_MLOCKALL: req->result = eio__mlockall (req->int1); break; |
1229 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
1789 | case EIO_SYNC_FILE_RANGE: req->result = eio__sync_file_range (req->int1, req->offs, req->size, req->int2); break; |
1230 | |
1790 | |
1231 | case EIO_READDIR: eio__scandir (req, self); break; |
1791 | case EIO_READDIR: eio__scandir (req, self); break; |
1232 | |
1792 | |
1233 | case EIO_BUSY: |
1793 | case EIO_BUSY: |
1234 | #ifdef _WIN32 |
1794 | #ifdef _WIN32 |
1235 | Sleep (req->nv1 * 1000.); |
1795 | Sleep (req->nv1 * 1e3); |
1236 | #else |
1796 | #else |
1237 | { |
1797 | { |
1238 | struct timeval tv; |
1798 | struct timeval tv; |
1239 | |
1799 | |
1240 | tv.tv_sec = req->nv1; |
1800 | tv.tv_sec = req->nv1; |
1241 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.; |
1801 | tv.tv_usec = (req->nv1 - tv.tv_sec) * 1e6; |
1242 | |
1802 | |
1243 | req->result = select (0, 0, 0, 0, &tv); |
1803 | req->result = select (0, 0, 0, 0, &tv); |
1244 | } |
1804 | } |
1245 | #endif |
1805 | #endif |
1246 | break; |
1806 | break; |
… | |
… | |
1261 | times = tv; |
1821 | times = tv; |
1262 | } |
1822 | } |
1263 | else |
1823 | else |
1264 | times = 0; |
1824 | times = 0; |
1265 | |
1825 | |
1266 | |
|
|
1267 | req->result = req->type == EIO_FUTIME |
1826 | req->result = req->type == EIO_FUTIME |
1268 | ? futimes (req->int1, times) |
1827 | ? futimes (req->int1, times) |
1269 | : utimes (req->ptr1, times); |
1828 | : utimes (req->ptr1, times); |
1270 | } |
1829 | } |
1271 | break; |
1830 | break; |
… | |
… | |
1276 | case EIO_NOP: |
1835 | case EIO_NOP: |
1277 | req->result = 0; |
1836 | req->result = 0; |
1278 | break; |
1837 | break; |
1279 | |
1838 | |
1280 | case EIO_CUSTOM: |
1839 | case EIO_CUSTOM: |
1281 | ((void (*)(eio_req *))req->feed) (req); |
1840 | req->feed (req); |
1282 | break; |
1841 | break; |
1283 | |
1842 | |
1284 | default: |
1843 | default: |
|
|
1844 | errno = ENOSYS; |
1285 | req->result = -1; |
1845 | req->result = -1; |
1286 | break; |
1846 | break; |
1287 | } |
1847 | } |
1288 | |
1848 | |
1289 | req->errorno = errno; |
1849 | req->errorno = errno; |
… | |
… | |
1319 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1879 | eio_req *eio_mtouch (void *addr, size_t length, int flags, int pri, eio_cb cb, void *data) |
1320 | { |
1880 | { |
1321 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1881 | REQ (EIO_MTOUCH); req->ptr2 = addr; req->size = length; req->int1 = flags; SEND; |
1322 | } |
1882 | } |
1323 | |
1883 | |
|
|
1884 | eio_req *eio_mlock (void *addr, size_t length, int pri, eio_cb cb, void *data) |
|
|
1885 | { |
|
|
1886 | REQ (EIO_MLOCK); req->ptr2 = addr; req->size = length; SEND; |
|
|
1887 | } |
|
|
1888 | |
|
|
1889 | eio_req *eio_mlockall (int flags, int pri, eio_cb cb, void *data) |
|
|
1890 | { |
|
|
1891 | REQ (EIO_MLOCKALL); req->int1 = flags; SEND; |
|
|
1892 | } |
|
|
1893 | |
1324 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
1894 | eio_req *eio_sync_file_range (int fd, off_t offset, size_t nbytes, unsigned int flags, int pri, eio_cb cb, void *data) |
1325 | { |
1895 | { |
1326 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
1896 | REQ (EIO_SYNC_FILE_RANGE); req->int1 = fd; req->offs = offset; req->size = nbytes; req->int2 = flags; SEND; |
1327 | } |
1897 | } |
1328 | |
1898 | |
… | |
… | |
1352 | } |
1922 | } |
1353 | |
1923 | |
1354 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
1924 | eio_req *eio_fstat (int fd, int pri, eio_cb cb, void *data) |
1355 | { |
1925 | { |
1356 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
1926 | REQ (EIO_FSTAT); req->int1 = fd; SEND; |
|
|
1927 | } |
|
|
1928 | |
|
|
1929 | eio_req *eio_fstatvfs (int fd, int pri, eio_cb cb, void *data) |
|
|
1930 | { |
|
|
1931 | REQ (EIO_FSTATVFS); req->int1 = fd; SEND; |
1357 | } |
1932 | } |
1358 | |
1933 | |
1359 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
1934 | eio_req *eio_futime (int fd, double atime, double mtime, int pri, eio_cb cb, void *data) |
1360 | { |
1935 | { |
1361 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
1936 | REQ (EIO_FUTIME); req->int1 = fd; req->nv1 = atime; req->nv2 = mtime; SEND; |
… | |
… | |
1435 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
2010 | eio_req *eio_lstat (const char *path, int pri, eio_cb cb, void *data) |
1436 | { |
2011 | { |
1437 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
2012 | return eio__1path (EIO_LSTAT, path, pri, cb, data); |
1438 | } |
2013 | } |
1439 | |
2014 | |
|
|
2015 | eio_req *eio_statvfs (const char *path, int pri, eio_cb cb, void *data) |
|
|
2016 | { |
|
|
2017 | return eio__1path (EIO_STATVFS, path, pri, cb, data); |
|
|
2018 | } |
|
|
2019 | |
1440 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
2020 | eio_req *eio_unlink (const char *path, int pri, eio_cb cb, void *data) |
1441 | { |
2021 | { |
1442 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
2022 | return eio__1path (EIO_UNLINK, path, pri, cb, data); |
1443 | } |
2023 | } |
1444 | |
2024 | |
1445 | eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) |
2025 | eio_req *eio_rmdir (const char *path, int pri, eio_cb cb, void *data) |
1446 | { |
2026 | { |
1447 | return eio__1path (EIO_RMDIR, path, pri, cb, data); |
2027 | return eio__1path (EIO_RMDIR, path, pri, cb, data); |
1448 | } |
2028 | } |
1449 | |
2029 | |
1450 | eio_req *eio_readdir (const char *path, int pri, eio_cb cb, void *data) |
2030 | eio_req *eio_readdir (const char *path, int flags, int pri, eio_cb cb, void *data) |
1451 | { |
2031 | { |
1452 | return eio__1path (EIO_READDIR, path, pri, cb, data); |
2032 | REQ (EIO_READDIR); PATH; req->int1 = flags; SEND; |
1453 | } |
2033 | } |
1454 | |
2034 | |
1455 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
2035 | eio_req *eio_mknod (const char *path, mode_t mode, dev_t dev, int pri, eio_cb cb, void *data) |
1456 | { |
2036 | { |
1457 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->int3 = (long)dev; SEND; |
2037 | REQ (EIO_MKNOD); PATH; req->int2 = (long)mode; req->offs = (off_t)dev; SEND; |
1458 | } |
2038 | } |
1459 | |
2039 | |
1460 | static eio_req * |
2040 | static eio_req * |
1461 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2041 | eio__2path (int type, const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1462 | { |
2042 | { |
… | |
… | |
1486 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
2066 | eio_req *eio_rename (const char *path, const char *new_path, int pri, eio_cb cb, void *data) |
1487 | { |
2067 | { |
1488 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
2068 | return eio__2path (EIO_RENAME, path, new_path, pri, cb, data); |
1489 | } |
2069 | } |
1490 | |
2070 | |
1491 | eio_req *eio_custom (eio_cb execute, int pri, eio_cb cb, void *data) |
2071 | eio_req *eio_custom (void (*execute)(eio_req *), int pri, eio_cb cb, void *data) |
1492 | { |
2072 | { |
1493 | REQ (EIO_CUSTOM); req->feed = (void (*)(eio_req *))execute; SEND; |
2073 | REQ (EIO_CUSTOM); req->feed = execute; SEND; |
1494 | } |
2074 | } |
1495 | |
2075 | |
1496 | #endif |
2076 | #endif |
1497 | |
2077 | |
1498 | eio_req *eio_grp (eio_cb cb, void *data) |
2078 | eio_req *eio_grp (eio_cb cb, void *data) |
… | |
… | |
1507 | #undef SEND |
2087 | #undef SEND |
1508 | |
2088 | |
1509 | /*****************************************************************************/ |
2089 | /*****************************************************************************/ |
1510 | /* grp functions */ |
2090 | /* grp functions */ |
1511 | |
2091 | |
|
|
2092 | void |
1512 | void eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
2093 | eio_grp_feed (eio_req *grp, void (*feed)(eio_req *req), int limit) |
1513 | { |
2094 | { |
1514 | grp->int2 = limit; |
2095 | grp->int2 = limit; |
1515 | grp->feed = feed; |
2096 | grp->feed = feed; |
1516 | |
2097 | |
1517 | grp_try_feed (grp); |
2098 | grp_try_feed (grp); |
1518 | } |
2099 | } |
1519 | |
2100 | |
|
|
2101 | void |
1520 | void eio_grp_limit (eio_req *grp, int limit) |
2102 | eio_grp_limit (eio_req *grp, int limit) |
1521 | { |
2103 | { |
1522 | grp->int2 = limit; |
2104 | grp->int2 = limit; |
1523 | |
2105 | |
1524 | grp_try_feed (grp); |
2106 | grp_try_feed (grp); |
1525 | } |
2107 | } |
1526 | |
2108 | |
|
|
2109 | void |
1527 | void eio_grp_add (eio_req *grp, eio_req *req) |
2110 | eio_grp_add (eio_req *grp, eio_req *req) |
1528 | { |
2111 | { |
1529 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
2112 | assert (("cannot add requests to IO::AIO::GRP after the group finished", grp->int1 != 2)); |
1530 | |
2113 | |
1531 | grp->flags |= EIO_FLAG_GROUPADD; |
2114 | grp->flags |= EIO_FLAG_GROUPADD; |
1532 | |
2115 | |
… | |
… | |
1543 | } |
2126 | } |
1544 | |
2127 | |
1545 | /*****************************************************************************/ |
2128 | /*****************************************************************************/ |
1546 | /* misc garbage */ |
2129 | /* misc garbage */ |
1547 | |
2130 | |
|
|
2131 | ssize_t |
1548 | ssize_t eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
2132 | eio_sendfile_sync (int ofd, int ifd, off_t offset, size_t count) |
1549 | { |
2133 | { |
1550 | etp_worker wrk; |
2134 | etp_worker wrk; |
|
|
2135 | ssize_t ret; |
1551 | |
2136 | |
1552 | wrk.dbuf = 0; |
2137 | wrk.dbuf = 0; |
1553 | |
2138 | |
1554 | eio__sendfile (ofd, ifd, offset, count, &wrk); |
2139 | ret = eio__sendfile (ofd, ifd, offset, count, &wrk); |
1555 | |
2140 | |
1556 | if (wrk.dbuf) |
2141 | if (wrk.dbuf) |
1557 | free (wrk.dbuf); |
2142 | free (wrk.dbuf); |
1558 | } |
|
|
1559 | |
2143 | |
|
|
2144 | return ret; |
|
|
2145 | } |
|
|
2146 | |