At a basic level, I have a main routine that spawns multiple goroutines to process data. Every time a goroutine processes the data it sends back a struct of varying size (it contains slices and/or arrays allocated from within the goroutine each time).
The data isn't huge (say, a few megabytes) but in general is it more efficient (and is it safe) to transfer a pointer to the data versus a copy of it all? If the data structure is static and I transfer a pointer to it, there's a risk that the structure may change while I'm still processing the result of the previous invocation (if it's fully reallocated then perhaps that's not an issue).