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const std = @import("std");
const Lock = @import("./lock.zig").Lock;
usingnamespace @import("./global.zig");
const Blob = @This();
ptr: [*]const u8,
len: usize,
pub const Map = struct {
const MapContext = struct {
pub fn hash(self: @This(), s: u64) u32 {
return @truncate(u32, s);
}
pub fn eql(self: @This(), a: u64, b: u64) bool {
return a == b;
}
};
const HashMap = std.ArrayHashMap(u64, Blob, MapContext, false);
lock: Lock,
map: HashMap,
allocator: *std.mem.Allocator,
pub fn init(allocator: *std.mem.Allocator) Map {
return Map{
.lock = Lock.init(),
.map = HashMap.init(allocator),
.allocator = allocator,
};
}
pub fn get(this: *Map, key: string) ?Blob {
this.lock.lock();
defer this.lock.unlock();
return this.map.get(std.hash.Wyhash.hash(0, key));
}
pub fn put(this: *Map, key: string, blob: Blob) !void {
this.lock.lock();
defer this.lock.unlock();
return try this.map.put(std.hash.Wyhash.hash(0, key), blob);
}
pub fn reset(this: *Map) !void {
this.lock.lock();
defer this.lock.unlock();
this.map.clearRetainingCapacity();
}
};
pub const Group = struct {
persistent: Map,
temporary: Map,
allocator: *std.mem.Allocator,
pub fn init(allocator: *std.mem.Allocator) !*Group {
var group = try allocator.create(Group);
group.* = Group{ .persistent = Map.init(allocator), .temporary = Map.init(allocator), .allocator = allocator };
return group;
}
pub fn get(this: *Group, key: string) ?Blob {
return this.temporary.get(key) orelse this.persistent.get(key);
}
};
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