esp_pthread.rst

ESP-pthread

Overview

This module offers Espressif specific extensions to the pthread library that can be used to influence the behaviour of pthreads. Currently the following configuration can be tuned:

• Stack size of the pthreads
• Priority of the created pthreads
• Inheriting this configuration across threads
• Thread name
• Core affinity / core pinning.

Example to tune the stack size of the pthread:

c

main()
{
    pthread_t t1;

    esp_pthread_cfg_t cfg = esp_create_default_pthread_config();
    cfg.stack_size = (4 * 1024);
    esp_pthread_set_cfg(&cfg);

    pthread_create(&t1, NULL, thread_func);
}

The API can also be used for inheriting the settings across threads. For example:

c

void * my_thread2(void * p)
{
      /* This thread will inherit the stack size of 4K */
      printf("In my_thread2\n");
}

void * my_thread1(void * p)
{
      printf("In my_thread1\n");
  pthread_t t2;
  pthread_create(&t2, NULL, my_thread2);
}

main()
{

     pthread_t t1;

     esp_pthread_cfg_t cfg = esp_create_default_pthread_config();
     cfg.stack_size = (4 * 1024);
     cfg.inherit_cfg = true;
     esp_pthread_set_cfg(&cfg);

     pthread_create(&t1, NULL, my_thread1);
}

API Reference