comparison: ucx/buffer.h
ucx/buffer.h
- changeset 85
- 0ef0df7aa2c2
- parent 81
- 86a23238d8a1
- child 86
- 55bf819cbc88
equal
deleted
inserted
replaced
| 84:7465c18765dc | 85:0ef0df7aa2c2 |
|---|---|
| 7 | 7 |
| 8 #ifdef __cplusplus | 8 #ifdef __cplusplus |
| 9 extern "C" { | 9 extern "C" { |
| 10 #endif | 10 #endif |
| 11 | 11 |
| 12 /* no autoextend or autofree behaviour */ | |
| 12 #define UCX_BUFFER_DEFAULT 0x00 | 13 #define UCX_BUFFER_DEFAULT 0x00 |
| 14 /* the buffer shall free the occupied memory space */ | |
| 13 #define UCX_BUFFER_AUTOFREE 0x01 | 15 #define UCX_BUFFER_AUTOFREE 0x01 |
| 14 /* the buffer may automatically double its size on write operations */ | 16 /* the buffer may automatically double its size on write operations */ |
| 15 #define UCX_BUFFER_AUTOEXTEND 0x02 | 17 #define UCX_BUFFER_AUTOEXTEND 0x02 |
| 16 | 18 |
| 17 /* the user shall not modify values, but may get the latest pointer */ | 19 /* the user shall not modify values, but may get the latest pointer */ |
| 42 * | 44 * |
| 43 * SEEK_SET marks the start of the buffer | 45 * SEEK_SET marks the start of the buffer |
| 44 * SEEK_CUR marks the current position | 46 * SEEK_CUR marks the current position |
| 45 * SEEK_END marks the first 0-byte in the buffer | 47 * SEEK_END marks the first 0-byte in the buffer |
| 46 * | 48 * |
| 47 * ucx_memseek returns 0 on success and -1 if the new position is beyond the | 49 * ucx_buffer_seek returns 0 on success and -1 if the new position is beyond the |
| 48 * bounds of the allocated buffer. In that case the position of the buffer | 50 * bounds of the allocated buffer. In that case the position of the buffer |
| 49 * remains unchanged. | 51 * remains unchanged. |
| 50 * | 52 * |
| 51 */ | 53 */ |
| 52 int ucx_buffer_seek(UcxBuffer *buffer, off_t offset, int whence); | 54 int ucx_buffer_seek(UcxBuffer *buffer, off_t offset, int whence); |
| 55 | |
| 56 #define ucx_buffer_clear(buffer) memset(buffer->space, 0, buffer->size); \ | |
| 57 buffer->size = 0; buffer->pos = 0; | |
| 53 | 58 |
| 54 /* | 59 /* |
| 55 * returns non-zero, if the current buffer position has exceeded the last | 60 * returns non-zero, if the current buffer position has exceeded the last |
| 56 * available byte of the underlying buffer | 61 * available byte of the underlying buffer |
| 57 * | 62 * |
