[0] | 1 | //buffer.c: |
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| 2 | |
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| 3 | #include "libroar.h" |
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| 4 | |
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| 5 | int roar_buffer_new (struct roar_buffer ** buf, size_t len) { |
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| 6 | struct roar_buffer * new; |
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| 7 | |
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| 8 | ROAR_DBG("buffer_new(buf=%p, len=%i) = ?", buf, len); |
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| 9 | |
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| 10 | if ((new = malloc(sizeof(struct roar_buffer))) == NULL) { |
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| 11 | *buf = NULL; |
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| 12 | return -1; |
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| 13 | } |
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| 14 | |
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| 15 | if ((new->data = malloc(len)) == NULL) { |
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| 16 | free(new); |
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| 17 | *buf = NULL; |
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| 18 | return -1; |
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| 19 | } |
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| 20 | |
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| 21 | new->user_data = new->data; |
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| 22 | |
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| 23 | new->next = NULL; |
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| 24 | |
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| 25 | new->len = len; |
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| 26 | new->user_len = len; |
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| 27 | *buf = new; |
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| 28 | |
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| 29 | ROAR_DBG("buffer_new(buf=%p, len=%i): New buffer at %p", buf, len, new); |
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| 30 | |
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| 31 | return 0; |
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| 32 | } |
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| 33 | |
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| 34 | int roar_buffer_free (struct roar_buffer * buf) { |
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| 35 | struct roar_buffer * next; |
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| 36 | |
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| 37 | if ( buf == NULL ) |
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| 38 | return -1; |
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| 39 | |
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| 40 | while ((next = buf->next)) { |
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| 41 | free(buf->data); |
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| 42 | free(buf); |
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| 43 | buf = next; |
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| 44 | } |
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| 45 | |
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| 46 | free(buf->data); |
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| 47 | free(buf); |
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| 48 | |
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| 49 | return 0; |
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| 50 | } |
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| 51 | |
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| 52 | int roar_buffer_delete (struct roar_buffer * buf, struct roar_buffer ** next) { |
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| 53 | if ( buf == NULL ) { |
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| 54 | if ( next != NULL ) |
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| 55 | *next = NULL; |
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| 56 | return -1; |
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| 57 | } |
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| 58 | |
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| 59 | ROAR_DBG("buffer_delete(buf=%p, next=%p) = ?", buf, next); |
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| 60 | |
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| 61 | if ( next != NULL ) |
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| 62 | *next = buf->next; |
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| 63 | |
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| 64 | free(buf->data); |
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| 65 | free(buf); |
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| 66 | |
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| 67 | ROAR_DBG("buffer_delete(buf=%p, next=%p) = 0", buf, next); |
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| 68 | return 0; |
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| 69 | } |
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| 70 | |
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| 71 | int roar_buffer_add (struct roar_buffer * buf, struct roar_buffer * next) { |
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| 72 | if ( buf == NULL ) |
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| 73 | return -1; |
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| 74 | |
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| 75 | ROAR_DBG("buffer_add(buf=%p, next=%p) = ?", buf, next); |
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| 76 | |
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| 77 | while ( buf->next != NULL ) { |
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| 78 | // ROAR_DBG("buffer_add(): buf=%p, buf->next=%p", buf, buf->next); |
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| 79 | buf = buf->next; |
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| 80 | } |
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| 81 | |
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| 82 | buf->next = next; |
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| 83 | |
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| 84 | return 0; |
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| 85 | } |
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| 86 | |
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| 87 | int roar_buffer_get_next (struct roar_buffer * buf, struct roar_buffer ** next) { |
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| 88 | if ( buf == NULL ) |
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| 89 | return -1; |
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| 90 | |
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| 91 | *next = buf->next; |
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| 92 | |
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| 93 | return 0; |
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| 94 | } |
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| 95 | |
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| 96 | int roar_buffer_get_data (struct roar_buffer * buf, void ** data) { |
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| 97 | if ( buf == NULL ) |
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| 98 | return -1; |
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| 99 | |
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| 100 | *data = buf->user_data; |
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| 101 | |
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| 102 | return 0; |
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| 103 | } |
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| 104 | |
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| 105 | int roar_buffer_set_offset (struct roar_buffer * buf, size_t off) { |
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| 106 | if ( buf == NULL ) |
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| 107 | return -1; |
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| 108 | |
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| 109 | buf->user_len -= off; |
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| 110 | buf->user_data += off; |
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| 111 | |
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| 112 | return 0; |
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| 113 | } |
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| 114 | |
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| 115 | int roar_buffer_set_meta (struct roar_buffer * buf, void * meta) { |
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| 116 | if ( buf == NULL ) |
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| 117 | return -1; |
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| 118 | |
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| 119 | buf->meta = meta; |
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| 120 | |
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| 121 | return 0; |
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| 122 | } |
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| 123 | |
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| 124 | int roar_buffer_get_meta (struct roar_buffer * buf, void ** meta) { |
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| 125 | if ( buf == NULL ) |
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| 126 | return -1; |
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| 127 | |
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| 128 | *meta = buf->meta; |
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| 129 | |
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| 130 | return 0; |
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| 131 | } |
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| 132 | |
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| 133 | int roar_buffer_set_len (struct roar_buffer * buf, size_t len) { |
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| 134 | if ( buf == NULL ) |
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| 135 | return -1; |
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| 136 | |
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| 137 | buf->user_len = len; |
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| 138 | |
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| 139 | return 0; |
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| 140 | } |
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| 141 | |
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| 142 | int roar_buffer_get_len (struct roar_buffer * buf, size_t * len) { |
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| 143 | if ( buf == NULL ) |
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| 144 | return -1; |
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| 145 | |
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| 146 | *len = buf->user_len; |
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| 147 | |
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| 148 | return 0; |
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| 149 | } |
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| 150 | |
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[46] | 151 | int roar_buffer_duplicate (struct roar_buffer * buf, struct roar_buffer ** copy) { |
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| 152 | struct roar_buffer * cur = buf; |
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| 153 | struct roar_buffer * new; |
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[48] | 154 | void * od, * nd; |
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[46] | 155 | |
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| 156 | *copy = NULL; |
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| 157 | |
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| 158 | while (cur) { |
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| 159 | if ( roar_buffer_new(&new, cur->user_len) == -1 ) { |
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| 160 | roar_buffer_free(*copy); |
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| 161 | return -1; |
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| 162 | } |
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| 163 | |
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| 164 | if ( *copy == NULL ) |
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| 165 | *copy = new; |
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| 166 | |
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[48] | 167 | roar_buffer_get_data(cur, &od); |
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| 168 | roar_buffer_get_data(new, &nd); |
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| 169 | memcpy(nd, od, cur->user_len); |
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| 170 | |
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[46] | 171 | roar_buffer_add(*copy, new); |
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| 172 | |
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| 173 | cur = cur->next; |
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| 174 | } |
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| 175 | return 0; |
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| 176 | } |
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| 177 | |
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[7] | 178 | int roar_buffer_ring_stats (struct roar_buffer * buf, struct roar_buffer_stats * stats) { |
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| 179 | if ( buf == NULL ) |
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| 180 | return -1; |
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| 181 | |
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| 182 | stats->parts = 0; |
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| 183 | stats->bytes = 0; |
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| 184 | stats->memory_usage = 0; |
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| 185 | |
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| 186 | while (buf) { |
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| 187 | stats->parts++; |
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| 188 | stats->bytes += buf->user_len; |
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| 189 | stats->memory_usage += buf->len + sizeof(struct roar_buffer); |
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| 190 | buf = buf->next; |
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| 191 | } |
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| 192 | |
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| 193 | return 0; |
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| 194 | } |
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| 195 | |
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[0] | 196 | //ll |
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