core: synchronize global .init before first .tick

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>

src/Core.zig

@@ -16,6 +16,7 @@ pub const global_events = .{
 
 pub const local_events = .{
     .init = .{ .handler = init },
+    .init_done = .{ .handler = fn () void },
 
     // TODO(important): need some way to tie event execution to a specific thread once we have a
     // multithreaded dispatch implementation
@@ -45,6 +46,7 @@ fn init(core: *Mod) !void {
     });
 
     core.sendGlobal(.init, .{});
+    core.send(.init_done, .{});
 }
 
 fn deinit(core: *Mod) void {

src/core/main.zig

@@ -14,6 +14,12 @@ pub fn initModule() !void {
     // Initialize the global set of Mach modules used in the program.
     try mods.init(std.heap.c_allocator);
     mods.mod.mach_core.send(.init, .{});
+
+    // Dispatch events until this .mach_core.init_done is sent
+    try mods.dispatch(.{ .until = .{
+        .module_name = mods.moduleNameToID(.mach_core),
+        .local_event = mods.localEventToID(.mach_core, .init_done),
+    } });
 }
 
 /// Tick runs a single step of the main loop on the main OS thread.