-
-
Notifications
You must be signed in to change notification settings - Fork 580
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Move Tracking_Allocator to its own file.
- Loading branch information
1 parent
000709b
commit 539cec7
Showing
3 changed files
with
137 additions
and
134 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,135 @@ | ||
//+build !freestanding | ||
package mem | ||
|
||
import "base:runtime" | ||
import "core:sync" | ||
|
||
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, | ||
} | ||
|
||
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 | ||
|
||
if .Free_All in query_features(t.backing) { | ||
t.clear_on_free_all = true | ||
} | ||
} | ||
|
||
tracking_allocator_destroy :: proc(t: ^Tracking_Allocator) { | ||
delete(t.allocation_map) | ||
delete(t.bad_free_array) | ||
} | ||
|
||
|
||
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) | ||
} | ||
|
||
|
||
@(require_results) | ||
tracking_allocator :: proc(data: ^Tracking_Allocator) -> Allocator { | ||
return Allocator{ | ||
data = data, | ||
procedure = tracking_allocator_proc, | ||
} | ||
} | ||
|
||
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) | ||
|
||
sync.mutex_guard(&data.mutex) | ||
|
||
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 | ||
} | ||
|
||
return | ||
} | ||
|
||
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) | ||
|
||
if data.allocation_map.allocator.procedure == nil { | ||
data.allocation_map.allocator = context.allocator | ||
} | ||
|
||
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, | ||
} | ||
|
||
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 | ||
|
||
case .Query_Info: | ||
unreachable() | ||
} | ||
|
||
return | ||
} | ||
|