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memory.hpp no longer uses memory mappings by default

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This commit is contained in:
Edward R. Gonzalez
2024-11-30 17:18:49 -05:00
parent 5527a27f7b
commit 06deb1e836
9 changed files with 170 additions and 102 deletions
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109
project/dependencies/memory.hpp
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@ -14,13 +14,23 @@
#define GEN__HIGHS ( GEN__ONES * ( GEN_U8_MAX / 2 + 1 ) )
#define GEN__HAS_ZERO( x ) ( ( ( x ) - GEN__ONES ) & ~( x ) & GEN__HIGHS )
template< class Type >
void swap( Type& a, Type& b )
{
Type tmp = a;
a = b;
b = tmp;
}
#if ! GEN_COMPILER_C
template< class Type >
void swap( Type& a, Type& b )
{
Type tmp = a;
a = b;
b = tmp;
}
#else
#define swap( a, b ) \
do { \
typeof(a) \
temp = (a); \
(a) = (b); \
(b) = temp; \
} while(0)
#endif
//! Checks if value is power of 2.
b32 is_power_of_two( ssize x );
@ -179,8 +189,8 @@ AllocatorInfo allocator_info( Arena& arena );
void* arena_allocator_proc(void* allocator_data, AllocType type, ssize size, ssize alignment, void* old_memory, ssize old_size, u64 flags);
// Add these declarations after the Arena struct
Arena init_from_allocator(AllocatorInfo backing, ssize size);
Arena init_from_memory( void* start, ssize size );
Arena arena_init_from_allocator(AllocatorInfo backing, ssize size);
Arena arena_init_from_memory( void* start, ssize size );
Arena init_sub(Arena& parent, ssize size);
ssize alignment_of(Arena& arena, ssize alignment);
@ -201,14 +211,14 @@ struct Arena
ssize TotalUsed;
ssize TempCount;
#if 1
#if GEN_SUPPORT_CPP_MEMBER_FEATURES
#pragma region Member Mapping
forceinline operator AllocatorInfo() { return GEN_NS allocator_info(* this); }
forceinline static void* allocator_proc( void* allocator_data, AllocType type, ssize size, ssize alignment, void* old_memory, ssize old_size, u64 flags ) { return GEN_NS arena_allocator_proc( allocator_data, type, size, alignment, old_memory, old_size, flags ); }
forceinline static Arena init_from_memory( void* start, ssize size ) { return GEN_NS init_from_memory( start, size ); }
forceinline static Arena init_from_allocator( AllocatorInfo backing, ssize size ) { return GEN_NS init_from_allocator( backing, size ); }
forceinline static Arena init_sub( Arena& parent, ssize size ) { return GEN_NS init_from_allocator( parent.Backing, size ); }
forceinline static Arena init_from_memory( void* start, ssize size ) { return GEN_NS arena_init_from_memory( start, size ); }
forceinline static Arena init_from_allocator( AllocatorInfo backing, ssize size ) { return GEN_NS arena_init_from_allocator( backing, size ); }
forceinline static Arena init_sub( Arena& parent, ssize size ) { return GEN_NS arena_init_from_allocator( parent.Backing, size ); }
forceinline ssize alignment_of( ssize alignment ) { return GEN_NS alignment_of(* this, alignment); }
forceinline void free() { return GEN_NS free(* this); }
forceinline ssize size_remaining( ssize alignment ) { return GEN_NS size_remaining(* this, alignment); }
@ -229,7 +239,7 @@ AllocatorInfo allocator_info( Arena& arena ) {
}
inline
Arena init_from_memory( void* start, ssize size )
Arena arena_init_from_memory( void* start, ssize size )
{
Arena arena = {
{ nullptr, nullptr },
@ -242,39 +252,36 @@ Arena init_from_memory( void* start, ssize size )
}
inline
Arena init_from_allocator(AllocatorInfo backing, ssize size)
{
Arena result =
{
backing,
alloc(backing, size),
size,
0,
0
};
return result;
Arena arena_init_from_allocator(AllocatorInfo backing, ssize size) {
Arena result = {
backing,
alloc(backing, size),
size,
0,
0
};
return result;
}
inline
Arena init_sub(Arena& parent, ssize size)
{
return init_from_allocator(parent.Backing, size);
Arena init_sub(Arena& parent, ssize size) {
return arena_init_from_allocator(parent.Backing, size);
}
inline
ssize alignment_of(Arena& arena, ssize alignment)
{
ssize alignment_offset, result_pointer, mask;
GEN_ASSERT(is_power_of_two(alignment));
ssize alignment_offset, result_pointer, mask;
GEN_ASSERT(is_power_of_two(alignment));
alignment_offset = 0;
result_pointer = (ssize)arena.PhysicalStart + arena.TotalUsed;
mask = alignment - 1;
alignment_offset = 0;
result_pointer = (ssize)arena.PhysicalStart + arena.TotalUsed;
mask = alignment - 1;
if (result_pointer & mask)
alignment_offset = alignment - (result_pointer & mask);
if (result_pointer & mask)
alignment_offset = alignment - (result_pointer & mask);
return alignment_offset;
return alignment_offset;
}
#pragma push_macro("check")
@ -289,18 +296,18 @@ void check(Arena& arena)
inline
void free(Arena& arena)
{
if (arena.Backing.Proc)
{
gen::free(arena.Backing, arena.PhysicalStart);
arena.PhysicalStart = nullptr;
}
if (arena.Backing.Proc)
{
GEN_NS free(arena.Backing, arena.PhysicalStart);
arena.PhysicalStart = nullptr;
}
}
inline
ssize size_remaining(Arena& arena, ssize alignment)
{
ssize result = arena.TotalSize - (arena.TotalUsed + alignment_of(arena, alignment));
return result;
ssize result = arena.TotalSize - (arena.TotalUsed + alignment_of(arena, alignment));
return result;
}
#pragma endregion Arena
@ -317,15 +324,15 @@ template<s32 Size> ssize size_remaining(FixedArena<Size>& fixed_arena
template< s32 Size >
struct FixedArena
{
char memory[Size];
Arena arena;
char memory[Size];
Arena arena;
#if 1
#if GEN_SUPPORT_CPP_MEMBER_FEATURES
#pragma region Member Mapping
forceinline operator AllocatorInfo() { return GEN_NS allocator_info(* this); }
forceinline operator AllocatorInfo() { return GEN_NS allocator_info(* this); }
forceinline static FixedArena init() { FixedArena result; GEN_NS fixed_arena_init<Size>(result); return result; }
forceinline ssize size_remaining(ssize alignment) { GEN_NS size_remaining(*this, alignment); }
forceinline static FixedArena init() { FixedArena result; GEN_NS fixed_arena_init<Size>(result); return result; }
forceinline ssize size_remaining(ssize alignment) { GEN_NS size_remaining(*this, alignment); }
#pragma endregion Member Mapping
#endif
};
@ -336,7 +343,7 @@ AllocatorInfo allocator_info( FixedArena<Size>& fixed_arena ) { return { arena_a
template<s32 Size> inline
void fixed_arena_init(FixedArena<Size>& result) {
zero_size(& result.memory[0], Size);
result.arena = init_from_memory(& result.memory[0], Size);
result.arena = arena_init_from_memory(& result.memory[0], Size);
}
template<s32 Size> inline
@ -378,6 +385,7 @@ struct Pool
ssize TotalSize;
ssize NumBlocks;
#if GEN_SUPPORT_CPP_MEMBER_FEATURES
#pragma region Member Mapping
forceinline operator AllocatorInfo() { return GEN_NS allocator_info(* this); }
@ -387,6 +395,7 @@ struct Pool
forceinline void clear() { GEN_NS clear(* this); }
forceinline void free() { GEN_NS free(* this); }
#pragma endregion
#endif
};
inline