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Allocators separated into aligned and non aligned operations.

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This commit is contained in:
Christoffer Lerno
2022-08-03 20:45:30 +02:00
parent 550bca79e9
commit cc8884d3d1
15 changed files with 572 additions and 269 deletions
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59
lib/std/core/mem_allocator.c3
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@@ -8,7 +8,7 @@ const DEFAULT_SIZE_PREFIX_ALIGNMENT = $alignof(usize);
const Allocator* NULL_ALLOCATOR = &_NULL_ALLOCATOR;
const Allocator* LIBC_ALLOCATOR = &_SYSTEM_ALLOCATOR;
define AllocatorFunction = fn void*!(Allocator* allocator, usize new_size, usize alignment, void* old_pointer, AllocationKind kind);
define AllocatorFunction = fn void*!(Allocator* allocator, usize new_size, usize alignment, usize offset, void* old_pointer, AllocationKind kind);
struct Allocator
{
@@ -21,6 +21,10 @@ enum AllocationKind
CALLOC,
REALLOC,
FREE,
ALIGNED_ALLOC,
ALIGNED_CALLOC,
ALIGNED_REALLOC,
ALIGNED_FREE,
RESET,
MARK,
}
@@ -34,50 +38,71 @@ fault AllocationFailure
/**
* @require !alignment || math::is_power_of_2(alignment)
*/
fn void*! Allocator.alloc(Allocator* allocator, usize size, usize alignment = 0) @inline
fn void*! Allocator.alloc(Allocator* allocator, usize size) @inline
{
return allocator.function(allocator, size, alignment, null, ALLOC);
return allocator.function(allocator, size, 0, 0, null, ALLOC);
}
/**
* @require !alignment || math::is_power_of_2(alignment)
* @require alignment && math::is_power_of_2(alignment)
*/
fn void*! Allocator.realloc(Allocator* allocator, void* old_pointer, usize size, usize alignment = 0) @inline
fn void*! Allocator.alloc_aligned(Allocator* allocator, usize size, usize alignment, usize offset = 0) @inline
{
return allocator.function(allocator, size, alignment, old_pointer, REALLOC);
return allocator.function(allocator, size, alignment, offset, null, ALIGNED_ALLOC);
}
fn void*! Allocator.realloc(Allocator* allocator, void* old_pointer, usize size) @inline
{
return allocator.function(allocator, size, 0, 0, old_pointer, REALLOC);
}
/**
* @require alignment && math::is_power_of_2(alignment)
*/
fn void*! Allocator.realloc_aligned(Allocator* allocator, void* old_pointer, usize size, usize alignment, usize offset = 0) @inline
{
return allocator.function(allocator, size, alignment, offset, old_pointer, ALIGNED_REALLOC);
}
fn usize! Allocator.mark(Allocator* allocator) @inline
{
return (usize)(uptr)allocator.function(allocator, 0, 0, null, MARK);
return (usize)(uptr)allocator.function(allocator, 0, 0, 0, null, MARK);
}
fn void*! Allocator.calloc(Allocator* allocator, usize size) @inline
{
return allocator.function(allocator, size, 0, 0, null, CALLOC);
}
/**
* @require !alignment || math::is_power_of_2(alignment)
* @require alignment && math::is_power_of_2(alignment)
*/
fn void*! Allocator.calloc(Allocator* allocator, usize size, usize alignment = 0) @inline
fn void*! Allocator.calloc_aligned(Allocator* allocator, usize size, usize alignment, usize offset = 0) @inline
{
return allocator.function(allocator, size, alignment, null, CALLOC);
return allocator.function(allocator, size, alignment, offset, null, ALIGNED_CALLOC);
}
fn void! Allocator.free(Allocator* allocator, void* old_pointer) @inline
{
allocator.function(allocator, 0, 0, old_pointer, FREE)?;
allocator.function(allocator, 0, 0, 0, old_pointer, FREE)?;
}
fn void! Allocator.free_aligned(Allocator* allocator, void* old_pointer) @inline
{
allocator.function(allocator, 0, 0, 0, old_pointer, ALIGNED_FREE)?;
}
fn void Allocator.reset(Allocator* allocator, usize mark = 0)
{
allocator.function(allocator, mark, 0, null, RESET)!!;
allocator.function(allocator, mark, 0, 0, null, RESET)!!;
}
private fn usize alignment_for_allocation(usize alignment) @inline
{
if (alignment < DEFAULT_MEM_ALIGNMENT)
{
alignment = DEFAULT_SIZE_PREFIX_ALIGNMENT;
alignment = DEFAULT_MEM_ALIGNMENT;
}
return alignment;
}
@@ -95,7 +120,7 @@ struct DynamicArenaAllocator
* @require page_size >= 128
* @require this != null
**/
fn void DynamicArenaAllocator.init(DynamicArenaAllocator* this, usize page_size, Allocator* backing_allocator = mem::allocator())
fn void DynamicArenaAllocator.init(DynamicArenaAllocator* this, usize page_size, Allocator* backing_allocator = mem::current_allocator())
{
this.function = &dynamic_arena_allocator_function;
this.page = null;