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Move Tracking_Allocator to its own file.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| //+build !freestanding | ||
| package mem | ||
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| import "base:runtime" | ||
| import "core:sync" | ||
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| Tracking_Allocator_Entry :: struct { | ||
| memory: rawptr, | ||
| size: int, | ||
| alignment: int, | ||
| mode: Allocator_Mode, | ||
| err: Allocator_Error, | ||
| location: runtime.Source_Code_Location, | ||
| } | ||
| Tracking_Allocator_Bad_Free_Entry :: struct { | ||
| memory: rawptr, | ||
| location: runtime.Source_Code_Location, | ||
| } | ||
| Tracking_Allocator :: struct { | ||
| backing: Allocator, | ||
| allocation_map: map[rawptr]Tracking_Allocator_Entry, | ||
| bad_free_array: [dynamic]Tracking_Allocator_Bad_Free_Entry, | ||
| mutex: sync.Mutex, | ||
| clear_on_free_all: bool, | ||
| } | ||
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| tracking_allocator_init :: proc(t: ^Tracking_Allocator, backing_allocator: Allocator, internals_allocator := context.allocator) { | ||
| t.backing = backing_allocator | ||
| t.allocation_map.allocator = internals_allocator | ||
| t.bad_free_array.allocator = internals_allocator | ||
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| if .Free_All in query_features(t.backing) { | ||
| t.clear_on_free_all = true | ||
| } | ||
| } | ||
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| tracking_allocator_destroy :: proc(t: ^Tracking_Allocator) { | ||
| delete(t.allocation_map) | ||
| delete(t.bad_free_array) | ||
| } | ||
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| tracking_allocator_clear :: proc(t: ^Tracking_Allocator) { | ||
| sync.mutex_lock(&t.mutex) | ||
| clear(&t.allocation_map) | ||
| clear(&t.bad_free_array) | ||
| sync.mutex_unlock(&t.mutex) | ||
| } | ||
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| @(require_results) | ||
| tracking_allocator :: proc(data: ^Tracking_Allocator) -> Allocator { | ||
| return Allocator{ | ||
| data = data, | ||
| procedure = tracking_allocator_proc, | ||
| } | ||
| } | ||
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| tracking_allocator_proc :: proc(allocator_data: rawptr, mode: Allocator_Mode, | ||
| size, alignment: int, | ||
| old_memory: rawptr, old_size: int, loc := #caller_location) -> (result: []byte, err: Allocator_Error) { | ||
| data := (^Tracking_Allocator)(allocator_data) | ||
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| sync.mutex_guard(&data.mutex) | ||
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| if mode == .Query_Info { | ||
| info := (^Allocator_Query_Info)(old_memory) | ||
| if info != nil && info.pointer != nil { | ||
| if entry, ok := data.allocation_map[info.pointer]; ok { | ||
| info.size = entry.size | ||
| info.alignment = entry.alignment | ||
| } | ||
| info.pointer = nil | ||
| } | ||
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| return | ||
| } | ||
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| if mode == .Free && old_memory != nil && old_memory not_in data.allocation_map { | ||
| append(&data.bad_free_array, Tracking_Allocator_Bad_Free_Entry{ | ||
| memory = old_memory, | ||
| location = loc, | ||
| }) | ||
| } else { | ||
| result = data.backing.procedure(data.backing.data, mode, size, alignment, old_memory, old_size, loc) or_return | ||
| } | ||
| result_ptr := raw_data(result) | ||
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| if data.allocation_map.allocator.procedure == nil { | ||
| data.allocation_map.allocator = context.allocator | ||
| } | ||
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| switch mode { | ||
| case .Alloc, .Alloc_Non_Zeroed: | ||
| data.allocation_map[result_ptr] = Tracking_Allocator_Entry{ | ||
| memory = result_ptr, | ||
| size = size, | ||
| mode = mode, | ||
| alignment = alignment, | ||
| err = err, | ||
| location = loc, | ||
| } | ||
| case .Free: | ||
| delete_key(&data.allocation_map, old_memory) | ||
| case .Free_All: | ||
| if data.clear_on_free_all { | ||
| clear_map(&data.allocation_map) | ||
| } | ||
| case .Resize, .Resize_Non_Zeroed: | ||
| if old_memory != result_ptr { | ||
| delete_key(&data.allocation_map, old_memory) | ||
| } | ||
| data.allocation_map[result_ptr] = Tracking_Allocator_Entry{ | ||
| memory = result_ptr, | ||
| size = size, | ||
| mode = mode, | ||
| alignment = alignment, | ||
| err = err, | ||
| location = loc, | ||
| } | ||
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| case .Query_Features: | ||
| set := (^Allocator_Mode_Set)(old_memory) | ||
| if set != nil { | ||
| set^ = {.Alloc, .Alloc_Non_Zeroed, .Free, .Free_All, .Resize, .Query_Features, .Query_Info} | ||
| } | ||
| return nil, nil | ||
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| case .Query_Info: | ||
| unreachable() | ||
| } | ||
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| return | ||
| } | ||
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