ps+ke: add thread reaping

src/ex/fireworks.zig

@@ -150,8 +150,7 @@ fn particle(param: ?*anyopaque) void {
         data.vel_y += @divTrunc(int_to_fp(10) * delay, 1000);
     }
 
-    // Now block.
-    ke.sched.block();
+    ps.thread.exit();
 }
 
 fn spawn_particle(arg: ?*anyopaque) void {
@@ -214,7 +213,7 @@ fn explodeable(_: ?*anyopaque) void {
         spawn_particle(param);
     }
 
-    ke.sched.block();
+    ps.thread.exit();
 }
 
 pub fn start(param: ?*anyopaque) void {
@@ -239,6 +238,8 @@ pub fn start(param: ?*anyopaque) void {
             spawn_explodeable();
         }
 
+        std.log.info("async: {}, sync: {}, usable memory: {} KiB", .{ mm.private.tlb.async_shootdowns.load(.monotonic), mm.private.tlb.sync_shootdowns.load(.monotonic), mm.private.phys.usable_memory.load(.monotonic) / 1024 });
+
         perform_delay(2000);
     }
 }

src/ex/init.zig

@@ -21,10 +21,10 @@ pub fn init(boot_info: *pl.BootInfo) void {
     exp.console.init();
 
     if (boot_info.framebuffer != null) {
-        fbconsole.init(boot_info);
+        //   fbconsole.init(boot_info);
 
-        //   const t = ps.thread.create_kernel(ke.Thread.Priority.default, ex.fireworks.start, boot_info) catch @panic("oom");
-        //  ke.sched.enqueue(&t.kern);
+        const t = ps.thread.create_kernel(ke.Thread.Priority.default, ex.fireworks.start, boot_info) catch @panic("oom");
+        ke.sched.enqueue(&t.kern);
     }
 
     while (true) {

src/ex/workqueue.zig

@@ -38,8 +38,8 @@ pub const WorkItem = struct {
         }
     };
 
-    pub fn init(priority: Priority, func: *const fn (arg: ?*anyopaque) void, arg: ?*anyopaque) WorkItem {
-        return .{
+    pub fn init(self: *WorkItem, priority: Priority, func: *const fn (arg: ?*anyopaque) void, arg: ?*anyopaque) void {
+        self.* = .{
             .func = func,
             .arg = arg,
             .link = undefined,