1"""Memory watchdog: periodically read the memory usage of the main test process 2and print it out, until terminated.""" 3# stdin should refer to the process' /proc/<PID>/statm: we don't pass the 4# process' PID to avoid a race condition in case of - unlikely - PID recycling. 5# If the process crashes, reading from the /proc entry will fail with ESRCH. 6 7 8import sys 9import time 10from test.support import get_pagesize 11 12 13while True: 14 page_size = get_pagesize() 15 sys.stdin.seek(0) 16 statm = sys.stdin.read() 17 data = int(statm.split()[5]) 18 sys.stdout.write(" ... process data size: {data:.1f}G\n" 19 .format(data=data * page_size / (1024 ** 3))) 20 sys.stdout.flush() 21 time.sleep(1) 22