bad.zig

const std = @import("std");
const perf_event = @cImport(@cInclude("linux/perf_event.h"));

const Event = struct {
    Fd: c_int = 0,
    Id: c_int = 0,
    // Maybe make these enums?
    PerfEventType: perf_event.enum_perf_type_id,
    PerfEventConfig: perf_event.enum_perf_hw_id,
    FriendlyName: [*]const u8,
};

const EventGroup = struct {
    LeaderFd: c_int = 0,
    Events: [*]const Event,
};

fn makeEvent(friendly_name: [*]const u8, perf_event_type: perf_event.enum_perf_type_id, perf_event_config: perf_event.enum_perf_hw_id) Event {
    return Event{
        .FriendlyName = friendly_name,
        .PerfEventType = perf_event_type,
        .PerfEventConfig = perf_event_config,
    };
}

fn makeEventGroup() EventGroup {
    return EventGroup{
        .Events = [_]Event{
            makeEvent(c"cycles", perf_event.PERF_TYPE_HARDWARE, perf_event.PERF_COUNT_HW_CPU_CYCLES),
            makeEvent(c"cycles", perf_event.PERF_TYPE_HARDWARE, perf_event.PERF_COUNT_HW_CPU_CYCLES),
        },
    };
}

pub fn main() anyerror!void {
    const event_groups = [1]EventGroup{makeEventGroup()};
    std.debug.warn("x: {}\n", c_int(3));
    std.debug.warn("All your base are belong to us.\n");
}