pprof performance

Measure cpuprofile for endless program.

1. create cpuprofile file
2. StartCPUProfile with this file
3. Create a channel to listen signal to accept signal

Usage:

1. go build .
2. run programming, ./pprof_performance
3. generate svg for torch, go-torch ./pprof_performance cpuprofile
4. open svg with browser: open torch.svg