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| 379 | static xmutex_t wrklock; |
379 | static xmutex_t wrklock; |
| 380 | static xmutex_t reslock; |
380 | static xmutex_t reslock; |
| 381 | static xmutex_t reqlock; |
381 | static xmutex_t reqlock; |
| 382 | static xcond_t reqwait; |
382 | static xcond_t reqwait; |
| 383 | |
383 | |
| 384 | #if !HAVE_PREADWRITE |
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| 385 | /* |
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| 386 | * make our pread/pwrite emulation safe against themselves, but not against |
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| 387 | * normal read/write by using a mutex. slows down execution a lot, |
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| 388 | * but that's your problem, not mine. |
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| 389 | */ |
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| 390 | static xmutex_t preadwritelock; |
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| 391 | #endif |
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| 392 | |
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| 393 | typedef struct etp_worker |
384 | typedef struct etp_worker |
| 394 | { |
385 | { |
| 395 | struct tmpbuf tmpbuf; |
386 | struct tmpbuf tmpbuf; |
| 396 | |
387 | |
| 397 | /* locked by wrklock */ |
388 | /* locked by wrklock */ |
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| 942 | return etp_poll (); |
933 | return etp_poll (); |
| 943 | } |
934 | } |
| 944 | |
935 | |
| 945 | /*****************************************************************************/ |
936 | /*****************************************************************************/ |
| 946 | /* work around various missing functions */ |
937 | /* work around various missing functions */ |
| 947 | |
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| 948 | #if !HAVE_PREADWRITE |
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| 949 | # undef pread |
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| 950 | # undef pwrite |
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| 951 | # define pread eio__pread |
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| 952 | # define pwrite eio__pwrite |
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| 953 | |
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| 954 | static eio_ssize_t |
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| 955 | eio__pread (int fd, void *buf, size_t count, off_t offset) |
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| 956 | { |
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| 957 | eio_ssize_t res; |
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| 958 | off_t ooffset; |
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| 959 | |
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| 960 | X_LOCK (preadwritelock); |
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| 961 | ooffset = lseek (fd, 0, SEEK_CUR); |
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| 962 | lseek (fd, offset, SEEK_SET); |
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| 963 | res = read (fd, buf, count); |
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| 964 | lseek (fd, ooffset, SEEK_SET); |
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| 965 | X_UNLOCK (preadwritelock); |
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| 966 | |
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| 967 | return res; |
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| 968 | } |
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| 969 | |
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| 970 | static eio_ssize_t |
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| 971 | eio__pwrite (int fd, void *buf, size_t count, off_t offset) |
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| 972 | { |
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| 973 | eio_ssize_t res; |
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| 974 | off_t ooffset; |
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| 975 | |
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| 976 | X_LOCK (preadwritelock); |
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| 977 | ooffset = lseek (fd, 0, SEEK_CUR); |
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| 978 | lseek (fd, offset, SEEK_SET); |
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| 979 | res = write (fd, buf, count); |
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| 980 | lseek (fd, ooffset, SEEK_SET); |
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| 981 | X_UNLOCK (preadwritelock); |
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| 982 | |
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| 983 | return res; |
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| 984 | } |
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| 985 | #endif |
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| 986 | |
938 | |
| 987 | #ifndef HAVE_UTIMES |
939 | #ifndef HAVE_UTIMES |
| 988 | |
940 | |
| 989 | # undef utimes |
941 | # undef utimes |
| 990 | # define utimes(path,times) eio__utimes (path, times) |
942 | # define utimes(path,times) eio__utimes (path, times) |
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| 2247 | /*****************************************************************************/ |
2199 | /*****************************************************************************/ |
| 2248 | |
2200 | |
| 2249 | int ecb_cold |
2201 | int ecb_cold |
| 2250 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
2202 | eio_init (void (*want_poll)(void), void (*done_poll)(void)) |
| 2251 | { |
2203 | { |
| 2252 | #if !HAVE_PREADWRITE |
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| 2253 | X_MUTEX_CREATE (preadwritelock); |
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| 2254 | #endif |
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| 2255 | |
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| 2256 | return etp_init (want_poll, done_poll); |
2204 | return etp_init (want_poll, done_poll); |
| 2257 | } |
2205 | } |
| 2258 | |
2206 | |
| 2259 | ecb_inline void |
2207 | ecb_inline void |
| 2260 | eio_api_destroy (eio_req *req) |
2208 | eio_api_destroy (eio_req *req) |
| 2261 | { |
2209 | { |
| 2262 | free (req); |
2210 | free (req); |
| 2263 | } |
2211 | } |
| 2264 | |
2212 | |
| 2265 | #define REQ(rtype) \ |
2213 | #define REQ(rtype) \ |
| 2266 | eio_req *req; \ |
2214 | eio_req *req; \ |
| 2267 | \ |
2215 | \ |
| 2268 | req = (eio_req *)calloc (1, sizeof *req); \ |
2216 | req = (eio_req *)calloc (1, sizeof *req); \ |
| 2269 | if (!req) \ |
2217 | if (!req) \ |
| 2270 | return 0; \ |
2218 | return 0; \ |
