Segmentation Fault Error in Concurrent Sensor Data Processing Simulation: What's the Issue?

My code is supposed to simulate a system where multiple sensors collect data concurrently and process them. But I get this

Segmentation fault (core dumped)

Segmentation fault (core dumped)

Segmentation fault (core dumped)

Segmentation fault (core dumped) error thrown in my console as the code crashes. Please what am I doing wrong ?

Solution

Seems like your

pthread_create()

pthread_create()

pthread_create()

pthread_create()

does not receive the correct argument, which should be the address of the

SensorData

SensorData

SensorData

SensorData struct, not the address of the

value

value

field within the struct.

This part of your code :

rc = pthread_create(&sensor_threads[t], NULL, sensor_task, (void *)&sensor_data[t].value);

rc = pthread_create(&sensor_threads[t], NULL, sensor_task, (void *)&sensor_data[t].value);

rc = pthread_create(&sensor_threads[t], NULL, sensor_task, (void *)&sensor_data[t].value);

rc = pthread_create(&sensor_threads[t], NULL, sensor_task, (void *)&sensor_data[t].value);

Change it to pass the address of the

SensorData

SensorData

SensorData

SensorData struct instead:

rc = pthread_create(&sensor_threads[t], NULL, sensor_task, (void *)&sensor_data[t]);

rc = pthread_create(&sensor_threads[t], NULL, sensor_task, (void *)&sensor_data[t]);

rc = pthread_create(&sensor_threads[t], NULL, sensor_task, (void *)&sensor_data[t]);

rc = pthread_create(&sensor_threads[t], NULL, sensor_task, (void *)&sensor_data[t]);

Solution

Joseph OgbonnaAPP•4/10/24, 10:05 PM

Seems like your

pthread_create()

pthread_create()

does not receive the correct argument, which should be the address of the

SensorData

SensorData

struct, not the address of the

value

value

field within the struct.

This part of your code :

rc = pthread_create(&sensor_threads[t], NULL, sensor_task, (void *)&sensor_data[t].value);

rc = pthread_create(&sensor_threads[t], NULL, sensor_task, (void *)&sensor_data[t].value);

Change it to pass the address of the

SensorData

SensorData

struct instead:

rc = pthread_create(&sensor_threads[t], NULL, sensor_task, (void *)&sensor_data[t]);

rc = pthread_create(&sensor_threads[t], NULL, sensor_task, (void *)&sensor_data[t]);

Marvee AmasiAPP•4/10/24, 10:05 PM

How did not see this

, thanks @Joseph Ogbonna