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Added fixed arenas (just ergonomics)

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Edward R. Gonzalez 2023-09-07 22:29:04 -04:00
parent 212b4e6d16
commit 0a8d3bfc6a
1 changed files with 39 additions and 0 deletions
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39
project/dependencies/memory.hpp
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@ -477,6 +477,45 @@ struct Arena
}
};
// Just a wrapper around using an arena with memory associated with its scope instead of from an allocator.
// Used for static segment or stack allocations.
template< s32 Size >
struct FixedArena
{
static
FixedArena init()
{
FixedArena result = { Arena::init_from_memory( result.memory, Size ), 0 };
return result;
}
sw size_remaining( sw alignment )
{
return arena.size_remaining( alignment );
}
operator AllocatorInfo()
{
return { Arena::allocator_proc, &arena };
}
Arena arena;
char memory[ Size ];
};
using Arena_1KB = FixedArena< kilobytes( 1 ) >;
using Arena_4KB = FixedArena< kilobytes( 4 ) >;
using Arena_8KB = FixedArena< kilobytes( 8 ) >;
using Arena_16KB = FixedArena< kilobytes( 16 ) >;
using Arena_32KB = FixedArena< kilobytes( 32 ) >;
using Arena_64KB = FixedArena< kilobytes( 64 ) >;
using Arena_128KB = FixedArena< kilobytes( 128 ) >;
using Arena_256KB = FixedArena< kilobytes( 256 ) >;
using Arena_512KB = FixedArena< kilobytes( 512 ) >;
using Arena_1MB = FixedArena< megabytes( 1 ) >;
using Arena_2MB = FixedArena< megabytes( 2 ) >;
using Arena_4MB = FixedArena< megabytes( 4 ) >;
struct Pool
{
static