1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/libexec/include/exec/process_monitor.h Fri Mar 24 00:46:26 2023 +0100
1.3 @@ -0,0 +1,82 @@
1.4 +/*
1.5 + * A process monitor abstraction.
1.6 + *
1.7 + * Copyright (C) 2022, 2023 Paul Boddie <paul@boddie.org.uk>
1.8 + *
1.9 + * This program is free software; you can redistribute it and/or
1.10 + * modify it under the terms of the GNU General Public License as
1.11 + * published by the Free Software Foundation; either version 2 of
1.12 + * the License, or (at your option) any later version.
1.13 + *
1.14 + * This program is distributed in the hope that it will be useful,
1.15 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.16 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.17 + * GNU General Public License for more details.
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License
1.20 + * along with this program; if not, write to the Free Software
1.21 + * Foundation, Inc., 51 Franklin Street, Fifth Floor,
1.22 + * Boston, MA 02110-1301, USA
1.23 + */
1.24 +
1.25 +#pragma once
1.26 +
1.27 +#include <fsserver/notification.h>
1.28 +#include <resource/resource.h>
1.29 +
1.30 +#include "parent_notification_object_interface.h"
1.31 +
1.32 +
1.33 +
1.34 +/* A process monitor receiving signals from a task. */
1.35 +
1.36 +class ProcessMonitor : public ParentNotificationObject, public NotificationSupport,
1.37 + public Resource
1.38 +{
1.39 +protected:
1.40 +
1.41 + /* Resources associated with the created process. */
1.42 +
1.43 + l4_cap_idx_t _pager = L4_INVALID_CAP, _mapped_pager = L4_INVALID_CAP,
1.44 + _parent = L4_INVALID_CAP, _mapped_parent = L4_INVALID_CAP,
1.45 + _task = L4_INVALID_CAP, _mapped_task = L4_INVALID_CAP,
1.46 + _thread = L4_INVALID_CAP, _mapped_thread = L4_INVALID_CAP;
1.47 +
1.48 +public:
1.49 + explicit ProcessMonitor();
1.50 +
1.51 + /* Server details. */
1.52 +
1.53 + virtual ipc_server_default_config_type config();
1.54 +
1.55 + virtual void *interface()
1.56 + { return static_cast<ParentNotificationObject *>(this); }
1.57 +
1.58 + /* Capability management. */
1.59 +
1.60 + virtual void set_pager(l4_cap_idx_t cap, l4_cap_idx_t mapped_cap);
1.61 + virtual void set_parent(l4_cap_idx_t cap, l4_cap_idx_t mapped_cap);
1.62 + virtual void set_task(l4_cap_idx_t cap, l4_cap_idx_t mapped_cap);
1.63 + virtual void set_thread(l4_cap_idx_t cap, l4_cap_idx_t mapped_cap);
1.64 +
1.65 + /* Lifecycle management. */
1.66 +
1.67 + virtual void pager_ended();
1.68 +
1.69 + /* Resource methods. */
1.70 +
1.71 + virtual void close();
1.72 +
1.73 + /* Parent methods. */
1.74 +
1.75 + virtual long signal(unsigned long sig, unsigned long val);
1.76 +
1.77 + /* Notification methods. */
1.78 +
1.79 + virtual long subscribe(l4_cap_idx_t notifier, notify_flags_t flags);
1.80 +
1.81 + virtual long unsubscribe(l4_cap_idx_t notifier);
1.82 +};
1.83 +
1.84 +/* vim: tabstop=2 expandtab shiftwidth=2
1.85 +*/