third_party/fuchsia-sdk/arch/arm64/vdso/profile.fidl

// Copyright 2019 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.

// TODO(fxb/39732): This should be read as "library zx".
library zz;

enum ProfileInfoType {
    ZX_PROFILE_INFO_SCHEDULER = 1;
};

union ProfileScheduler {
    1: int32 priority;
    2: uint32 boost;
    3: uint32 deboost;
    4: uint32 quantum;
};

const int32 ZX_PRIORITY_LOWEST = 0;
const int32 ZX_PRIORITY_LOW = 8;
const int32 ZX_PRIORITY_DEFAULT = 16;
const int32 ZX_PRIORITY_HIGH = 24;
const int32 ZX_PRIORITY_HIGHEST = 31;

union ProfileInfoData {
    1: ProfileScheduler scheduler;
};

struct ProfileInfo {
    ProfileInfoType type;
    // TODO(scottmg): This needs to be presented as an unnamed union in C, and
    // ProfileInfoData doesn't really need a name. Not sure if the semantics of
    // fidl unions make sense here.
    ProfileInfoData unnamed;
};

[Transport = "Syscall"]
protocol profile {
    /// Create a scheduler profile.
    /// Rights: root_job must be of type ZX_OBJ_TYPE_JOB and have ZX_RIGHT_MANAGE_PROCESS.
    profile_create(handle<job> root_job, uint32 options, ProfileInfo profile)
        -> (status status, handle<profile> out);
};