| import os |
| from autotest_lib.client.bin import utils |
| |
| |
| class Tracer(object): |
| """ |
| Common interface for tracing. |
| """ |
| |
| tracing_dir = None |
| |
| def trace_config(self, path, value): |
| """ |
| Write value to a tracing config file under self.tracing_dir. |
| """ |
| path = os.path.join(self.tracing_dir, path) |
| utils.open_write_close(path, value) |
| |
| def warmup(self, buffer_size_kb): |
| pass |
| def cleanup(self): |
| pass |
| def start_tracing(self): |
| pass |
| def stop_tracing(self): |
| pass |
| def gather_stats(self, results): |
| pass |
| def reset_tracing(self): |
| pass |
