How to retrieve the Goroutine stack trace using runtime.Stack()?

To retrieve the Goroutine stack trace using the runtime.Stack() function, you can follow the steps below:

Step 1: Import the runtime package in your Go code:

Step 2: Create a buffer to store the stack trace:

Here, we create a buffer with a size of 8192 bytes (adjust the size as needed).

Step 3: Call runtime.Stack() function to fill the buffer with the stack trace information:

The runtime.Stack() function takes two parameters, the buffer and a boolean flag indicating whether it should include external functions or not. It returns the number of bytes written to the buffer.

Step 4: Convert the buffer to a string and print or use it as required:

Here, we convert the buffer to a string using string(stackBuf[:length]) and print it. You can use it in any other way based on your needs.

Note: You can use the runtime.Goexit() function to capture a stack trace at a certain point in your Goroutine's execution.