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Simplify hashing approach map

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This commit is contained in:
gingerBill
2020-11-29 15:50:29 +00:00
parent 97c66c9c73
commit 1dfe0cdd1d
6 changed files with 51 additions and 68 deletions
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core/runtime/core.odin
+4 -2
View File
@@ -42,8 +42,10 @@ Platform_Endianness :: enum u8 {
Big = 2,
}
Equal_Proc :: distinct proc "contextless" (rawptr, rawptr) -> bool;
Hasher_Proc :: distinct proc "contextless" (data: rawptr, seed: uintptr) -> uintptr;
// Procedure type to test whether two values of the same type are equal
Equal_Proc :: distinct proc "contextless" (rawptr, rawptr) -> bool;
// Procedure type to hash a value, default seed value is 0
Hasher_Proc :: distinct proc "contextless" (data: rawptr, seed: uintptr = 0) -> uintptr;
Type_Info_Struct_Soa_Kind :: enum u8 {
None = 0,
core/runtime/dynamic_map_internal.odin
+10
View File
@@ -110,6 +110,16 @@ default_hasher_string :: proc "contextless" (data: rawptr, seed: uintptr) -> uin
}
return uintptr(h);
}
default_hasher_cstring :: proc "contextless" (data: rawptr, seed: uintptr) -> uintptr {
h := u64(seed) + 0xcbf29ce484222325;
ptr := (^uintptr)(data)^;
for (^byte)(ptr)^ != 0 {
b := (^byte)(ptr)^;
h = (h ~ u64(b)) * 0x100000001b3;
ptr += 1;
}
return uintptr(h);
}