fit the memory usage for esp32c3

main/background_task.cc

@@ -0,0 +1,63 @@
+#include "background_task.h"
+
+#include <esp_log.h>
+
+#define TAG "BackgroundTask"
+
+BackgroundTask::BackgroundTask(uint32_t stack_size) {
+#if CONFIG_IDF_TARGET_ESP32S3
+    task_stack_ = (StackType_t*)heap_caps_malloc(stack_size, MALLOC_CAP_SPIRAM);
+    background_task_handle_ = xTaskCreateStatic([](void* arg) {
+        BackgroundTask* task = (BackgroundTask*)arg;
+        task->BackgroundTaskLoop();
+    }, "background_task", stack_size, this, 1, task_stack_, &task_buffer_);
+#else
+    xTaskCreate([](void* arg) {
+        BackgroundTask* task = (BackgroundTask*)arg;
+        task->BackgroundTaskLoop();
+    }, "background_task", stack_size, this, 1, &background_task_handle_);
+#endif
+}
+
+BackgroundTask::~BackgroundTask() {
+    if (background_task_handle_ != nullptr) {
+        vTaskDelete(background_task_handle_);
+    }
+}
+
+void BackgroundTask::Schedule(std::function<void()> callback) {
+    std::lock_guard<std::mutex> lock(mutex_);
+    if (active_tasks_ >= 30) {
+        ESP_LOGW(TAG, "active_tasks_ == %u", active_tasks_.load());
+    }
+    active_tasks_++;
+    auto wrapped_callback = [this, callback]() {
+        callback();
+        active_tasks_--;
+        condition_variable_.notify_all();
+    };
+    main_tasks_.push_back(wrapped_callback);
+    condition_variable_.notify_all();
+}
+
+void BackgroundTask::WaitForCompletion() {
+    std::unique_lock<std::mutex> lock(mutex_);
+    condition_variable_.wait(lock, [this]() {
+        return main_tasks_.empty() && active_tasks_ == 0;
+    });
+}
+
+void BackgroundTask::BackgroundTaskLoop() {
+    ESP_LOGI(TAG, "background_task started");
+    while (true) {
+        std::unique_lock<std::mutex> lock(mutex_);
+        condition_variable_.wait(lock, [this]() { return !main_tasks_.empty(); });
+        
+        std::list<std::function<void()>> tasks = std::move(main_tasks_);
+        lock.unlock();
+
+        for (auto& task : tasks) {
+            task();
+        }
+    }
+}