tiny.choir.composition.loaded.lifecycle

1const sys = @import("sys");2const composition = @import("../root.zig");34const source = composition.source;56pub const LifecycleEvent = union(enum) {7    invocation_destroyed: u64,8    fragment_destroyed: source.FragmentId,9    composition_destroyed,10};1112pub const LifecycleObserver = struct {13    ptr: *anyopaque,14    record_fn: *const fn (*anyopaque, LifecycleEvent) void,1516    pub fn record(self: LifecycleObserver, event: LifecycleEvent) void {17        self.record_fn(self.ptr, event);18    }19};2021pub const Recorder = struct {22    mutex: sys.thread.Mutex = .{},23    target: ?LifecycleObserver,2425    pub fn init(target: ?LifecycleObserver) Recorder {26        return .{ .target = target };27    }2829    pub fn record(self: *Recorder, event: LifecycleEvent) void {30        const target = self.target orelse return;31        self.mutex.lock();32        defer self.mutex.unlock();33        target.record(event);34    }3536    pub fn serialized(self: *Recorder) ?LifecycleObserver {37        if (self.target == null) return null;38        return .{39            .ptr = self,40            .record_fn = recordSerialized,41        };42    }4344    fn recordSerialized(ptr: *anyopaque, event: LifecycleEvent) void {45        const self: *Recorder = @ptrCast(@alignCast(ptr));46        self.record(event);47    }48};

1pub const lifecycle = @import("lifecycle.zig");