From 30342573581021e799ace9ef77d6bb5feddf91ca Mon Sep 17 00:00:00 2001
From: Boris Zbarsky <bzbarsky@apple.com>
Date: Fri, 11 Feb 2022 10:52:22 -0500
Subject: [PATCH] Make sure to queue m5stack actions to the Matter thread as
 needed. (#15066)

Fixes https://github.com/project-chip/connectedhomeip/issues/15065
---
 .../esp32/main/CHIPDeviceManager.cpp          |  7 ++++
 examples/all-clusters-app/esp32/main/main.cpp | 37 +++++++++++++++++--
 2 files changed, 40 insertions(+), 4 deletions(-)

diff --git a/examples/all-clusters-app/esp32/main/CHIPDeviceManager.cpp b/examples/all-clusters-app/esp32/main/CHIPDeviceManager.cpp
index 87dccff0773f23..59f822bb017cd9 100644
--- a/examples/all-clusters-app/esp32/main/CHIPDeviceManager.cpp
+++ b/examples/all-clusters-app/esp32/main/CHIPDeviceManager.cpp
@@ -99,6 +99,13 @@ CHIP_ERROR CHIPDeviceManager::Init(CHIPDeviceManagerCallbacks * cb)
 void MatterPostAttributeChangeCallback(const chip::app::ConcreteAttributePath & path, uint8_t mask, uint8_t type, uint16_t size,
                                        uint8_t * value)
 {
+    TaskHandle_t task = xTaskGetCurrentTaskHandle();
+    const char * name = pcTaskGetName(task);
+    if (!strcmp(name, "CHIP"))
+    {
+        ESP_LOGE("all-clusters-app", "Attribute changed on non-Matter task '%s'\n", name);
+    }
+
     chip::DeviceManager::CHIPDeviceManagerCallbacks * cb =
         chip::DeviceManager::CHIPDeviceManager::GetInstance().GetCHIPDeviceManagerCallbacks();
     if (cb != nullptr)
diff --git a/examples/all-clusters-app/esp32/main/main.cpp b/examples/all-clusters-app/esp32/main/main.cpp
index 025d208b89fdb1..9e6693bca9c0c8 100644
--- a/examples/all-clusters-app/esp32/main/main.cpp
+++ b/examples/all-clusters-app/esp32/main/main.cpp
@@ -185,7 +185,35 @@ void AddDevice(std::string name)
 
 #if CONFIG_DEVICE_TYPE_M5STACK
 
-class EditAttributeListModel : public ListScreen::Model
+class TouchesMatterStackModel : public ListScreen::Model
+{
+    // We could override Action() and then hope focusIndex has not changed by
+    // the time our queued task runs, but it's cleaner to just capture its value
+    // now.
+    struct QueuedAction
+    {
+        QueuedAction(TouchesMatterStackModel * selfArg, int iArg) : self(selfArg), i(iArg) {}
+        TouchesMatterStackModel * self;
+        int i;
+    };
+
+    void ItemAction(int i) final
+    {
+        auto * action = chip::Platform::New<QueuedAction>(this, i);
+        chip::DeviceLayer::PlatformMgr().ScheduleWork(QueuedActionHandler, reinterpret_cast<intptr_t>(action));
+    }
+
+    static void QueuedActionHandler(intptr_t closure)
+    {
+        auto * queuedAction = reinterpret_cast<QueuedAction *>(closure);
+        queuedAction->self->DoAction(queuedAction->i);
+        chip::Platform::Delete(queuedAction);
+    }
+
+    virtual void DoAction(int i) = 0;
+};
+
+class EditAttributeListModel : public TouchesMatterStackModel
 {
     int deviceIndex;
     int endpointIndex;
@@ -224,7 +252,8 @@ class EditAttributeListModel : public ListScreen::Model
         }
         return i == 0 ? "+" : "-";
     }
-    virtual void ItemAction(int i)
+
+    void DoAction(int i) override
     {
         auto & attribute = this->attribute();
         auto & value     = std::get<1>(attribute);
@@ -398,7 +427,7 @@ class MdnsDebugListModel : public ActionListModel
     }
 };
 
-class SetupListModel : public ListScreen::Model
+class SetupListModel : public TouchesMatterStackModel
 {
 public:
     SetupListModel()
@@ -413,7 +442,7 @@ class SetupListModel : public ListScreen::Model
     virtual std::string GetTitle() { return "Setup"; }
     virtual int GetItemCount() { return options.size(); }
     virtual std::string GetItemText(int i) { return options.at(i); }
-    virtual void ItemAction(int i)
+    void DoAction(int i) override
     {
         ESP_LOGI(TAG, "Opening options %d: %s", i, GetItemText(i).c_str());
         if (i == 0)