| """ |
| Sets up a subprocses to cat a file on a specified interval |
| |
| Defaults options: |
| job.profilers.add('catprofile', ['/proc/meminfo','/proc/uptime'], |
| outfile=monitor, interval=1) |
| """ |
| import time, os |
| from autotest_lib.client.bin import profiler |
| |
| class catprofile(profiler.profiler): |
| version = 1 |
| |
| # filenames: list of filenames to cat |
| def initialize(self, filenames = ['/proc/meminfo', '/proc/slabinfo'], |
| outfile = 'monitor', interval = 1): |
| self.filenames = filenames |
| self.outfile = outfile |
| self.interval = interval |
| |
| |
| def start(self, test): |
| self.child_pid = os.fork() |
| if self.child_pid: # parent |
| return None |
| else: # child |
| while 1: |
| lines = [] |
| for filename in self.filenames: |
| input = open(filename, 'r') |
| lines += '\n----- %s -----\n' % filename |
| lines += input.readlines() |
| input.close |
| outfile = test.profdir + '/' + self.outfile |
| output = open(outfile, 'a') |
| output.write(time.asctime() + '\n') |
| output.writelines(lines) |
| output.write('\n=========================\n') |
| output.close() |
| time.sleep(self.interval) |
| |
| |
| def stop(self, test): |
| os.kill(self.child_pid, 15) |
| |
| |
| def report(self, test): |
| return None |
