Merge pull request #16 from Aandreba/cache-opt

Added cache optimizations to the internal layout of the reference counters

Author: Aandreba

Justfile

@@ -12,5 +12,5 @@ test:
     zig test src/tests.zig
 
 clean:
-    rm -rf zig-cache
+    rm -rf .zig-cache
     rm -rf zig-out

src/example.zig

@@ -6,6 +6,7 @@ const Mutex = Thread.Mutex;
 
 const ArrayList = std.ArrayList;
 const Arc = rc.Arc(Data);
+const Rc = rc.Rc(@Vector(8, f32));
 
 const THREADS = 8;
 
@@ -21,19 +22,19 @@ const Data = struct {
 test "example" {
     std.debug.print("\n", .{});
     std.debug.print("Data size: {}\n", .{@sizeOf(Data)});
-    std.debug.print("Heap size: {}\n\n", .{Arc.innerSize()});
+    std.debug.print("Heap size: {}\n\n", .{Arc.total_size});
 
     std.debug.print("Data align: {}\n", .{@alignOf(Data)});
-    std.debug.print("Heap align: {}\n\n", .{Arc.innerAlign()});
+    std.debug.print("Heap align: {}\n\n", .{Arc.internal_alignment});
 
     var value = try Arc.init(std.testing.allocator, .{});
-    errdefer value.releaseWithFn(Data.deinit, .{});
+    errdefer if (value.releaseUnwrap()) |inner| inner.deinit();
 
     var handles: [THREADS]Thread = undefined;
     var i: usize = 0;
     while (i < THREADS) {
         const this_value = value.retain();
-        errdefer this_value.releaseWithFn(Data.deinit, .{});
+        errdefer if (this_value.releaseUnwrap()) |data| data.deinit();
         handles[i] = try Thread.spawn(.{}, thread_exec, .{this_value});
         i += 1;
     }
@@ -45,14 +46,22 @@ test "example" {
     std.debug.print("{d}\n", .{owned_value.data.items});
 }
 
+test "st_example" {
+    std.debug.print("\n", .{});
+    std.debug.print("Data size: {}\n", .{@sizeOf(@Vector(8, f32))});
+    std.debug.print("Heap size: {}\n\n", .{Rc.total_size});
+
+    std.debug.print("Data align: {}\n", .{@alignOf(@Vector(8, f32))});
+    std.debug.print("Heap align: {}\n\n", .{Rc.internal_alignment});
+}
+
 fn thread_exec(data: Arc) !void {
-    defer data.releaseWithFn(Data.deinit, .{});
+    defer if (data.releaseUnwrap()) |inner| inner.deinit();
 
-    var rng = std.rand.DefaultPrng.init(@as(u64, @bitCast(@as(i64, @truncate(std.time.nanoTimestamp())))));
+    var rng = std.Random.DefaultPrng.init(@as(u64, @bitCast(@as(i64, @truncate(std.time.nanoTimestamp())))));
 
     data.value.mutex.lock();
     defer data.value.mutex.unlock();
-
     const value = rng.random().int(u64);
     try data.value.data.append(value);