squeezelite-esp32/components/spotify/cspot/bell/include/Task.h

#ifndef BELL_TASK_H
#define BELL_TASK_H

#ifdef ESP_PLATFORM
#include <esp_pthread.h>
#include <esp_task.h>
#include <freertos/FreeRTOS.h>
#include <freertos/timers.h>
#include <freertos/task.h>
#endif

#include <pthread.h>

namespace bell
{
    class Task
    {
    public:
        std::string taskName;
        int stackSize, core;
        bool runOnPSRAM;
        Task(std::string taskName, int stackSize, int priority, int core, bool runOnPSRAM = true)
        {
            this->taskName = taskName;
            this->stackSize = stackSize;
            this->core = core;
            this->runOnPSRAM = runOnPSRAM;
#ifdef ESP_PLATFORM
			this->xStack = NULL;
			this->priority = CONFIG_ESP32_PTHREAD_TASK_PRIO_DEFAULT + priority;
			if (this->priority < 0) this->priority = ESP_TASK_PRIO_MIN;
			if (runOnPSRAM) {
				this->xStack = (StackType_t*) heap_caps_malloc(this->stackSize, MALLOC_CAP_SPIRAM | MALLOC_CAP_8BIT);
			}
#endif
        }
        virtual ~Task() {
#ifdef ESP_PLATFORM
			if (xStack) heap_caps_free(xStack);
#endif
		}

        bool startTask()
        {
#ifdef ESP_PLATFORM
            if (runOnPSRAM)
            {
                xTaskBuffer = (StaticTask_t*) heap_caps_malloc(sizeof(StaticTask_t), MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT);
                return (xTaskCreateStaticPinnedToCore(taskEntryFuncPSRAM, this->taskName.c_str(), this->stackSize, this, 
													  this->priority, xStack, xTaskBuffer, this->core) != NULL);
            }
            else
            {
                esp_pthread_cfg_t cfg = esp_pthread_get_default_config();
                cfg.stack_size = stackSize;
                cfg.inherit_cfg = true;
                cfg.thread_name = this->taskName.c_str();
                cfg.pin_to_core = core;
				cfg.prio = this->priority;
                esp_pthread_set_cfg(&cfg);
            }
#endif
            return (pthread_create(&thread, NULL, taskEntryFunc, this) == 0);
        }

    protected:
        virtual void runTask() = 0;

    private:
        pthread_t thread;
#ifdef ESP_PLATFORM
		int priority;
        StaticTask_t *xTaskBuffer;
        StackType_t *xStack;

        static void taskEntryFuncPSRAM(void *This)
        {
			Task* self = (Task*) This;
            self->runTask();

			// TCB are cleanup in IDLE task, so give it some time
			TimerHandle_t timer = xTimerCreate( "cleanup", pdMS_TO_TICKS(5000), pdFALSE, self->xTaskBuffer, 
												[](TimerHandle_t xTimer) {
													heap_caps_free(pvTimerGetTimerID(xTimer));
													xTimerDelete(xTimer, portMAX_DELAY);
								  } );	
			xTimerStart(timer, portMAX_DELAY);

			vTaskDelete(NULL);
		}
#endif

        static void *taskEntryFunc(void *This)
        {
			Task* self = (Task*) This;
			self->runTask();
			pthread_join(self->thread, NULL);
            return NULL;
        }
    };
}

#endif