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#include <basic/arena.h>
#include <assert.h>
#include <string.h>
#include <stdlib.h>
void
arena_init(Arena *arena, u64 size)
{
arena->size_used = 0;
arena->size_max = size;
arena->memory = malloc(size);
}
void
arena_deinit(Arena *arena)
{
arena->size_used = 0;
arena->size_max = 0;
free(arena->memory);
}
void
arena_align(Arena *arena, u64 alignment)
{
// @Incomplete
}
void*
arena_push(Arena *arena, u64 size)
{
void *result = arena->memory + arena->size_used;
arena->size_used += size;
assert(arena->size_used <= arena->size_max);
return result;
}
void
arena_pop_to(Arena *arena, u64 pos)
{
arena->size_used = pos;
}
void
arena_pop_size(Arena *arena, u64 size)
{
arena->size_used -= size;
}
void
arena_zero(Arena *arena)
{
memset(arena->memory, 0, arena->size_used);
}
void
arena_clear(Arena *arena)
{
arena->size_used = 0;
}
ArenaTmp
arena_tmp_begin(Arena *arena)
{
ArenaTmp tmp;
tmp.arena = arena;
tmp.pos = arena->size_used;
return tmp;
}
void
arena_tmp_end(ArenaTmp tmp)
{
tmp.arena->size_used = tmp.pos;
}
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