From ecaf30c5cea321c55f6a5ce827afbfc6afa0e9b1 Mon Sep 17 00:00:00 2001
From: Nicolas James <Eele1Ephe7uZahRie@tutanota.com>
Date: Sat, 4 Apr 2026 14:20:59 +1100
Subject: Lock in swapchain_monitor::update_params, fix missing CMakeList.txt
 modification

---
 src/instance_context.cc  | 2 +-
 src/instance_context.hh  | 2 +-
 src/layer.cc             | 2 +-
 src/swapchain_monitor.cc | 2 ++
 src/swapchain_monitor.hh | 4 ++--
 5 files changed, 7 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/instance_context.cc b/src/instance_context.cc
index 5a4d48a..8aeb46c 100644
--- a/src/instance_context.cc
+++ b/src/instance_context.cc
@@ -13,7 +13,7 @@ InstanceContext::InstanceContext(const LayerContext& parent_context,
 InstanceContext::~InstanceContext() {
     // Similar to devices, we should own the only shared ptr at this point so
     // they destruct now.
-    for (const auto& [device, device_context] : this->phys_devices) {
+    for (const auto& [device, device_context] : this->physical_devices) {
         assert(device_context.unique());
     }
 }
diff --git a/src/instance_context.hh b/src/instance_context.hh
index 001cde8..2f448b4 100644
--- a/src/instance_context.hh
+++ b/src/instance_context.hh
@@ -21,7 +21,7 @@ struct InstanceContext final : public Context {
     const VkuInstanceDispatchTable vtable;
 
     std::unordered_map<void*, std::shared_ptr<PhysicalDeviceContext>>
-        phys_devices;
+        physical_devices;
 
   public:
     InstanceContext(const LayerContext& parent_context,
diff --git a/src/layer.cc b/src/layer.cc
index 3811fca..e0f1fa6 100644
--- a/src/layer.cc
+++ b/src/layer.cc
@@ -102,7 +102,7 @@ DestroyInstance(VkInstance instance, const VkAllocationCallbacks* allocator) {
 
         // Erase our physical devices owned by this instance from the global
         // context.
-        for (const auto& [key, _] : context->phys_devices) {
+        for (const auto& [key, _] : context->physical_devices) {
             assert(layer_context.contexts.contains(key));
             layer_context.contexts.erase(key);
         }
diff --git a/src/swapchain_monitor.cc b/src/swapchain_monitor.cc
index 87f6205..fec0f93 100644
--- a/src/swapchain_monitor.cc
+++ b/src/swapchain_monitor.cc
@@ -19,6 +19,8 @@ void SwapchainMonitor::update_params(
     const bool was_low_latency_requested,
     const std::chrono::milliseconds present_delay) {
 
+    const auto lock = std::scoped_lock{this->mutex};
+
     this->was_low_latency_requested = was_low_latency_requested;
     this->present_delay = present_delay;
 }
diff --git a/src/swapchain_monitor.hh b/src/swapchain_monitor.hh
index eaf4933..9192f55 100644
--- a/src/swapchain_monitor.hh
+++ b/src/swapchain_monitor.hh
@@ -12,7 +12,6 @@
 #include <mutex>
 #include <thread>
 
-#include "instance_context.hh"
 #include "queue_context.hh"
 
 namespace low_latency {
@@ -29,6 +28,8 @@ class SwapchainMonitor {
   protected:
     const DeviceContext& device;
 
+    std::mutex mutex;
+
     // Configurarable params for this swapchain.
     std::chrono::milliseconds present_delay = std::chrono::milliseconds{0};
     bool was_low_latency_requested = false;
@@ -79,7 +80,6 @@ class ReflexSwapchainMonitor final : public SwapchainMonitor {
     };
     std::deque<SemaphoreSubmissions> semaphore_submissions;
 
-    std::mutex mutex;
     std::condition_variable_any cv;
     std::jthread monitor_worker;
 
-- 
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