// 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.
library zx;

@transport("Syscall")
protocol task {
    // TODO(scottmg): Need something like handle:TASK in this file to mean {job, process, thread}.
    // Or otherwise some way to express multiple options for constraints on inputs in this protocol.

    /// Suspend the given task. Currently only thread or process handles may be suspended.
    /// Rights: handle must be of type ZX_OBJ_TYPE_THREAD or ZX_OBJ_TYPE_PROCESS and have ZX_RIGHT_WRITE.
    task_suspend(resource struct {
        handle handle;
    }) -> (resource struct {
        status status;
        token handle;
    });

    /// Suspend the given task. Currently only thread or process handles may be suspended.
    /// Rights: handle must be of type ZX_OBJ_TYPE_THREAD or ZX_OBJ_TYPE_PROCESS and have ZX_RIGHT_WRITE.
    task_suspend_token(resource struct {
        handle handle;
    }) -> (resource struct {
        status status;
        token handle;
    });

    /// Create an exception channel for a given job, process, or thread.
    /// Rights: handle must have ZX_RIGHT_INSPECT and have ZX_RIGHT_DUPLICATE and have ZX_RIGHT_TRANSFER and have ZX_RIGHT_MANAGE_THREAD.
    /// Rights: If handle is of type ZX_OBJ_TYPE_JOB or ZX_OBJ_TYPE_PROCESS, it must have ZX_RIGHT_ENUMERATE.
    task_create_exception_channel(resource struct {
        handle handle;
        options uint32;
    }) -> (resource struct {
        status status;
        out handle:CHANNEL;
    });

    /// Kill the provided task (job, process, or thread).
    /// Rights: handle must have ZX_RIGHT_DESTROY.
    task_kill(resource struct {
        handle handle;
    }) -> (struct {
        status status;
    });
};