diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | src/vector.c | 73 | ||||
| -rw-r--r-- | src/vector.h | 82 |
3 files changed, 156 insertions, 0 deletions
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt index 750883f..9e757c5 100644 --- a/src/CMakeLists.txt +++ b/src/CMakeLists.txt @@ -36,6 +36,7 @@ add_executable(fastd shell.c socket.c tuntap.c + vector.c ${BISON_fastd_config_parse_OUTPUTS} ) set_property(TARGET fastd PROPERTY COMPILE_FLAGS "${FASTD_CFLAGS}") diff --git a/src/vector.c b/src/vector.c new file mode 100644 index 0000000..153327e --- /dev/null +++ b/src/vector.c @@ -0,0 +1,73 @@ +/* + Copyright (c) 2012-2014, Matthias Schiffer <mschiffer@universe-factory.net> + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + + +#include "vector.h" + +#include <string.h> + + +void _fastd_vector_alloc(fastd_vector_desc_t *desc, void **data, size_t n, size_t elemsize) { + desc->allocated = 16; + + while (desc->allocated < n*3/2) + desc->allocated <<= 1; + + desc->length = n; + + *data = malloc(desc->allocated * elemsize); +} + +void _fastd_vector_resize(fastd_vector_desc_t *desc, void **data, size_t n, size_t elemsize) { + desc->length = n; + + size_t alloc = desc->allocated; + + while (alloc < n) + alloc <<= 1; + while (alloc > n*3 && alloc > 16) + alloc >>= 1; + + if (alloc != desc->allocated) { + desc->allocated = alloc; + *data = realloc(*data, alloc * elemsize); + } +} + +void _fastd_vector_insert(fastd_vector_desc_t *desc, void **data, void *element, size_t pos, size_t elemsize) { + _fastd_vector_resize(desc, data, desc->length+1, elemsize); + + void *p = *data + pos*elemsize; + + memmove(p+elemsize, p, (desc->length-pos-1)*elemsize); + memcpy(p, element, elemsize); +} + +void _fastd_vector_delete(fastd_vector_desc_t *desc, void **data, size_t pos, size_t elemsize) { + void *p = *data + pos*elemsize; + memmove(p, p+elemsize, (desc->length-pos-1)*elemsize); + + _fastd_vector_resize(desc, data, desc->length-1, elemsize); +} diff --git a/src/vector.h b/src/vector.h new file mode 100644 index 0000000..0d9d9be --- /dev/null +++ b/src/vector.h @@ -0,0 +1,82 @@ +/* + Copyright (c) 2012-2014, Matthias Schiffer <mschiffer@universe-factory.net> + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions are met: + + 1. Redistributions of source code must retain the above copyright notice, + this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright notice, + this list of conditions and the following disclaimer in the documentation + and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE + FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER + CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + + +#pragma once + +#include <stdlib.h> + + +typedef struct fastd_vector_desc { + size_t allocated; + size_t length; +} fastd_vector_desc_t; + + +#define VECTOR(type) \ + struct { \ + fastd_vector_desc_t desc; \ + type *data; \ + } + + + +void _fastd_vector_alloc(fastd_vector_desc_t *desc, void **data, size_t n, size_t elemsize); +void _fastd_vector_resize(fastd_vector_desc_t *desc, void **data, size_t n, size_t elemsize); +void _fastd_vector_insert(fastd_vector_desc_t *desc, void **data, void *element, size_t pos, size_t elemsize); +void _fastd_vector_delete(fastd_vector_desc_t *desc, void **data, size_t pos, size_t elemsize); + + +#define VECTOR_ALLOC(v, n) ({ \ + __typeof__(v) *_v = &(v); \ + _fastd_vector_alloc(&_v->desc, (void**)&_v->data, (n), sizeof(*_v->data)); \ + }) + +#define VECTOR_RESIZE(v, n) ({ \ + __typeof__(v) *_v = &(v); \ + _fastd_vector_resize(&_v->desc, (void**)&_v->data, (n), sizeof(*_v->data)); \ + }) + +#define VECTOR_FREE(v) free((v).data) + +#define VECTOR_LEN(v) ((v).desc.length) +#define VECTOR_INDEX(v, i) ((v).data[i]) +#define VECTOR_DATA(v) ((v).data) + +#define VECTOR_INSERT(v, elem, pos) ({ \ + __typeof__(v) *_v = &(v); \ + __typeof__(*_v->data) _e = (elem); \ + _fastd_vector_insert(&_v->desc, (void**)&_v->data, &_e, (pos), sizeof(_e)); \ + }) + +#define VECTOR_ADD(v, elem) ({ \ + __typeof__(v) *_v = &(v); \ + VECTOR_INSERT(*_v, (elem), _v->desc.length); \ + }) + +#define VECTOR_DELETE(v, pos) ({ \ + __typeof__(v) *_v = &(v); \ + _fastd_vector_delete(&_v->desc, (void**)&_v->data, (pos), sizeof(*_v->data)); \ + }) |