layers: DrawState migrate device and instance dispatch tables into layer data struct

This is first part of cleaning up DrawState. Need to migrate its global maps into the layer data struct as well so they are per device/instance and then single map look-up with get both layer data and dispatch tables.

1 files changed, 5 insertions, 0 deletions

diff --git a/layers/device_limits.cpp b/layers/device_limits.cpp
index 5b1cf575..b991a86a 100644
--- a/layers/device_limits.cpp
+++ b/layers/device_limits.cpp
@@ -190,6 +190,11 @@ VK_LAYER_EXPORT void VKAPI vkDestroyInstance(VkInstance instance)
     layer_debug_report_destroy_instance(my_data->report_data);
     delete my_data->instance_dispatch_table;
     layer_data_map.erase(key);
+    if (layer_data_map.empty()) {
+        // Release mutex when destroying last instance.
+        loader_platform_thread_delete_mutex(&globalLock);
+        globalLockInitialized = 0;
+    }
 }
 
 VK_LAYER_EXPORT VkResult VKAPI vkEnumeratePhysicalDevices(VkInstance instance, uint32_t* pPhysicalDeviceCount, VkPhysicalDevice* pPhysicalDevices)