1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
package runtime
nil_allocator_proc :: proc(allocator_data: rawptr, mode: Allocator_Mode,
size, alignment: int,
old_memory: rawptr, old_size: int, loc := #caller_location) -> ([]byte, Allocator_Error) {
switch mode {
case .Alloc, .Alloc_Non_Zeroed:
return nil, .Out_Of_Memory
case .Free:
return nil, .None
case .Free_All:
return nil, .Mode_Not_Implemented
case .Resize, .Resize_Non_Zeroed:
if size == 0 {
return nil, .None
}
return nil, .Out_Of_Memory
case .Query_Features:
return nil, .Mode_Not_Implemented
case .Query_Info:
return nil, .Mode_Not_Implemented
}
return nil, .None
}
nil_allocator :: proc "contextless" () -> Allocator {
return Allocator{
procedure = nil_allocator_proc,
data = nil,
}
}
panic_allocator_proc :: proc(allocator_data: rawptr, mode: Allocator_Mode,
size, alignment: int,
old_memory: rawptr, old_size: int, loc := #caller_location) -> ([]byte, Allocator_Error) {
switch mode {
case .Alloc:
if size > 0 {
panic("panic allocator, .Alloc called", loc=loc)
}
case .Alloc_Non_Zeroed:
if size > 0 {
panic("panic allocator, .Alloc_Non_Zeroed called", loc=loc)
}
case .Resize:
if size > 0 {
panic("panic allocator, .Resize called", loc=loc)
}
case .Resize_Non_Zeroed:
if size > 0 {
panic("panic allocator, .Alloc_Non_Zeroed called", loc=loc)
}
case .Free:
if old_memory != nil {
panic("panic allocator, .Free called", loc=loc)
}
case .Free_All:
panic("panic allocator, .Free_All called", loc=loc)
case .Query_Features:
set := (^Allocator_Mode_Set)(old_memory)
if set != nil {
set^ = {.Query_Features}
}
return nil, nil
case .Query_Info:
panic("panic allocator, .Query_Info called", loc=loc)
}
return nil, nil
}
panic_allocator :: proc() -> Allocator {
return Allocator{
procedure = panic_allocator_proc,
data = nil,
}
}
|
