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1 | /* enable mremap on GNU/Linux */ |
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2 | #ifdef __linux__ |
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3 | # define _GNU_SOURCE |
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4 | #endif |
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5 | |
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6 | /* enable the POSIX prototypes of mmap/munmap on Solaris */ |
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7 | #ifdef __sun |
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8 | # if __STDC_VERSION__ >= 199901L |
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9 | # define _XOPEN_SOURCE 600 |
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10 | # else |
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11 | # define _XOPEN_SOURCE 500 |
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12 | # endif |
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13 | #endif |
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14 | |
| 1 | #include "emman.h" |
15 | #include "emman.h" |
| 2 | |
16 | |
| 3 | #include <ecb.h> |
17 | #include <ecb.h> |
| 4 | |
18 | |
| 5 | #include <string.h> |
19 | #include <string.h> |
| 6 | |
20 | |
| 7 | #ifndef _WIN32 |
21 | #ifndef _WIN32 |
| 8 | # include <unistd.h> |
22 | # include <unistd.h> |
| 9 | #endif |
23 | #endif |
| 10 | |
24 | |
| 11 | #if _POSIX_MAPPED_FILES |
25 | #if _POSIX_MAPPED_FILES > 0 |
| 12 | # define USE_MMAP 1 |
26 | # define USE_MMAP 1 |
| 13 | # ifdef __linux__ |
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| 14 | # define _GNU_SOURCE |
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| 15 | # endif |
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| 16 | # include <sys/mman.h> |
27 | # include <sys/mman.h> |
| 17 | # ifndef MAP_FAILED |
28 | # ifndef MAP_FAILED |
| 18 | # define MAP_FAILED ((void *)-1) |
29 | # define MAP_FAILED ((void *)-1) |
| 19 | # endif |
30 | # endif |
| 20 | # ifndef MAP_ANONYMOUS |
31 | # ifndef MAP_ANONYMOUS |
| … | |
… | |
| 32 | # else |
43 | # else |
| 33 | # define BOOT_PAGESIZE |
44 | # define BOOT_PAGESIZE |
| 34 | # endif |
45 | # endif |
| 35 | #else |
46 | #else |
| 36 | # define PAGESIZE 1 |
47 | # define PAGESIZE 1 |
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48 | # define BOOT_PAGESIZE |
| 37 | #endif |
49 | #endif |
| 38 | |
50 | |
| 39 | size_t |
51 | size_t |
| 40 | chunk_round (size_t size) |
52 | chunk_round (size_t size) |
| 41 | { |
53 | { |
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… | |
| 116 | memcpy (ptr2, ptr, old_size); |
128 | memcpy (ptr2, ptr, old_size); |
| 117 | munmap (ptr, old_size); |
129 | munmap (ptr, old_size); |
| 118 | return ptr2; |
130 | return ptr2; |
| 119 | #endif |
131 | #endif |
| 120 | #else |
132 | #else |
| 121 | return realloc (ptr, size); |
133 | return realloc (ptr, new_size); |
| 122 | #endif |
134 | #endif |
| 123 | } |
135 | } |
| 124 | |
136 | |
| 125 | void |
137 | void |
| 126 | chunk_free (void *ptr, size_t size) |
138 | chunk_free (void *ptr, size_t size) |
| 127 | { |
139 | { |
| 128 | #if USE_MMAP |
140 | #if USE_MMAP |
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141 | /* we assume the OS never mmaps at address 0 */ |
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142 | if (ptr) |
| 129 | munmap (ptr, size); |
143 | munmap (ptr, size); |
| 130 | #else |
144 | #else |
| 131 | return free (ptr); |
145 | return free (ptr); |
| 132 | #endif |
146 | #endif |
| 133 | } |
147 | } |
| 134 | |
148 | |
