From 4b28e4626e744ac9b779a680f8e9647014956dda Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Sun, 26 Jul 2026 21:46:37 +0200
Subject: kapi/devices: implement locking discipline

---
 kapi/kapi/devices/bus.hpp             | 3 +++
 kapi/kapi/devices/device_registry.hpp | 3 +++
 kapi/kapi/devices/facet_registry.hpp  | 3 +++
 3 files changed, 9 insertions(+)

(limited to 'kapi')

diff --git a/kapi/kapi/devices/bus.hpp b/kapi/kapi/devices/bus.hpp
index 13951e46..2ee12628 100644
--- a/kapi/kapi/devices/bus.hpp
+++ b/kapi/kapi/devices/bus.hpp
@@ -6,6 +6,7 @@
 #include <kapi/capabilities/facet_id.hpp>
 #include <kapi/devices/bus_protocol.hpp>
 #include <kapi/devices/device.hpp>
+#include <kapi/tracked_mutex.hpp>
 
 #include <kstd/memory.hpp>
 #include <kstd/print.hpp>
@@ -65,6 +66,8 @@ namespace kapi::devices
   private:
     auto do_remove_child(device & child) -> void;
 
+    mutable tracked_mutex m_lock{};
+
     bus_protocol * m_protocol{};
     kstd::vector<kstd::shared_ptr<device>> m_devices{};
   };
diff --git a/kapi/kapi/devices/device_registry.hpp b/kapi/kapi/devices/device_registry.hpp
index a65bd4ad..816ad984 100644
--- a/kapi/kapi/devices/device_registry.hpp
+++ b/kapi/kapi/devices/device_registry.hpp
@@ -4,6 +4,7 @@
 // IWYU pragma: private, include <kapi/devices.hpp>
 
 #include <kapi/devices/device.hpp>
+#include <kapi/tracked_mutex.hpp>
 
 #include <kstd/flat_map.hpp>
 #include <kstd/memory.hpp>
@@ -79,6 +80,8 @@ namespace kapi::devices
     auto subscribe(kstd::weak_ptr<device_registry_observer> observer) -> void;
 
   private:
+    mutable tracked_mutex m_lock{};
+
     kstd::flat_map<kstd::string, kstd::weak_ptr<device>> m_devices{};
     kstd::vector<kstd::weak_ptr<device_registry_observer>> m_observers{};
   };
diff --git a/kapi/kapi/devices/facet_registry.hpp b/kapi/kapi/devices/facet_registry.hpp
index 82bb304b..7006c026 100644
--- a/kapi/kapi/devices/facet_registry.hpp
+++ b/kapi/kapi/devices/facet_registry.hpp
@@ -5,6 +5,7 @@
 
 #include <kapi/capabilities/facet_id.hpp>
 #include <kapi/devices/device.hpp>
+#include <kapi/tracked_mutex.hpp>
 
 #include <kstd/memory.hpp>
 #include <kstd/result.hpp>
@@ -268,6 +269,8 @@ namespace kapi::devices
     //! @param device The device.
     auto do_notify_withdrawn(kapi::capabilities::facet_id id, device const & device) -> void;
 
+    mutable tracked_mutex m_lock{};
+
     kstd::vector<entry> m_entries;
     kstd::vector<kstd::weak_ptr<facet_registry_observer>> m_observers;
     kstd::vector<facet_registry_observer *> m_static_observers;
-- 
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