const system = @import("system");

const vm = system.vm;
const syscalls = system.syscalls;
const buffer = system.ring_buffer;

pub fn setupKernelRingBuffer(base: u64) !void {
    const phys = vm.PhysFrame{ .address = try syscalls.allocFrame() };

    const data: [*]u8 = @ptrCast(phys.virtualPointer(u8, base));

    try syscalls.setEventQueue(syscalls.getThreadId(), phys.address);

    const event_queue = buffer.RingBuffer.init(data, vm.PAGE_SIZE, true);

    system.ipc.setKernelBuffer(event_queue);
}

pub fn discoverThreadLimit() u64 {
    var pid: u64 = 1;
    while (true) {
        _ = syscalls.getPriority(pid) catch return (pid - 1);
        pid += 1;
    }
}