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authorMatthias Schiffer <mschiffer@universe-factory.net>2014-04-19 19:06:48 +0200
committerMatthias Schiffer <mschiffer@universe-factory.net>2014-04-19 19:06:48 +0200
commite59ff6e444e1504e798a76aea5d25e152587da0b (patch)
treecedcdca11066844c8b734176a6cd489930ac7f9c
parenta184210f2e172745c9232cbf6b065bfe4d209d4e (diff)
downloadfastd-e59ff6e444e1504e798a76aea5d25e152587da0b.tar
fastd-e59ff6e444e1504e798a76aea5d25e152587da0b.zip
Add vector macros
-rw-r--r--src/CMakeLists.txt1
-rw-r--r--src/vector.c73
-rw-r--r--src/vector.h82
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)); \
+ })