sdk/fidl/fuchsia.hardware.clock.measure/measure.fidl

// Copyright 2024 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
@available(added=HEAD)
library fuchsia.hardware.clock.measure;

using zx;

const MAX_NAME_LEN uint32 = 256;

type FrequencyInfo = struct {
    name string:MAX_NAME_LEN;
    frequency uint64;
};

/// Used to measure clock frequency of various clocks in the system.
open protocol Measurer {
    flexible Measure(struct {
        clock uint32;
    }) -> (struct {
        info FrequencyInfo;
    }) error zx.Status;
    flexible GetCount() -> (struct {
        count uint32;
    });
};

service Service {
    measurer client_end:Measurer;
};