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Prepare for tlsf.free_all

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Jeroen van Rijn
2025-04-13 15:20:53 +02:00
parent 74a66f7794
commit 0e9cd0fb6a
2 changed files with 18 additions and 10 deletions
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core/mem/tlsf/tlsf.odin
+16 -7
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@@ -39,12 +39,14 @@ Allocator :: struct {
// statistics like how much memory is still available,
// fragmentation, etc.
pool: Pool,
// If we're expected to grow when we run out of memory,
// how much should we ask the backing allocator for?
new_pool_size: int,
}
#assert(size_of(Allocator) % ALIGN_SIZE == 0)
@(require_results)
allocator :: proc(t: ^Allocator) -> runtime.Allocator {
return runtime.Allocator{
@@ -60,13 +62,18 @@ init_from_buffer :: proc(control: ^Allocator, buf: []byte) -> Error {
return .Invalid_Alignment
}
pool_bytes := align_down(len(buf) - POOL_OVERHEAD, ALIGN_SIZE)
pool_bytes := align_down(len(buf), ALIGN_SIZE) - INITIAL_POOL_OVERHEAD
if pool_bytes < BLOCK_SIZE_MIN {
return .Backing_Buffer_Too_Small
} else if pool_bytes > BLOCK_SIZE_MAX {
return .Backing_Buffer_Too_Large
}
control.pool = Pool{
data = buf,
allocator = {},
}
clear(control)
return pool_add(control, buf[:])
}
@@ -74,7 +81,7 @@ init_from_buffer :: proc(control: ^Allocator, buf: []byte) -> Error {
@(require_results)
init_from_allocator :: proc(control: ^Allocator, backing: runtime.Allocator, initial_pool_size: int, new_pool_size := 0) -> Error {
assert(control != nil)
pool_bytes := align_up(uint(initial_pool_size) + POOL_OVERHEAD, ALIGN_SIZE)
pool_bytes := align_up(uint(initial_pool_size), ALIGN_SIZE) + INITIAL_POOL_OVERHEAD
if pool_bytes < BLOCK_SIZE_MIN {
return .Backing_Buffer_Too_Small
} else if pool_bytes > BLOCK_SIZE_MAX {
@@ -85,12 +92,14 @@ init_from_allocator :: proc(control: ^Allocator, backing: runtime.Allocator, ini
if backing_err != nil {
return .Backing_Allocator_Error
}
err := init_from_buffer(control, buf)
control.pool = Pool{
data = buf,
allocator = backing,
}
return err
clear(control)
return pool_add(control, buf[:])
}
init :: proc{init_from_buffer, init_from_allocator}