| # Util.py - Python extension for perf script, miscellaneous utility code |
| # |
| # Copyright (C) 2010 by Tom Zanussi <tzanussi@gmail.com> |
| # |
| # This software may be distributed under the terms of the GNU General |
| # Public License ("GPL") version 2 as published by the Free Software |
| # Foundation. |
| |
| import errno, os |
| |
| FUTEX_WAIT = 0 |
| FUTEX_WAKE = 1 |
| FUTEX_PRIVATE_FLAG = 128 |
| FUTEX_CLOCK_REALTIME = 256 |
| FUTEX_CMD_MASK = ~(FUTEX_PRIVATE_FLAG | FUTEX_CLOCK_REALTIME) |
| |
| NSECS_PER_SEC = 1000000000 |
| |
| def avg(total, n): |
| return total / n |
| |
| def nsecs(secs, nsecs): |
| return secs * NSECS_PER_SEC + nsecs |
| |
| def nsecs_secs(nsecs): |
| return nsecs / NSECS_PER_SEC |
| |
| def nsecs_nsecs(nsecs): |
| return nsecs % NSECS_PER_SEC |
| |
| def nsecs_str(nsecs): |
| str = "%5u.%09u" % (nsecs_secs(nsecs), nsecs_nsecs(nsecs)), |
| return str |
| |
| def add_stats(dict, key, value): |
| if not dict.has_key(key): |
| dict[key] = (value, value, value, 1) |
| else: |
| min, max, avg, count = dict[key] |
| if value < min: |
| min = value |
| if value > max: |
| max = value |
| avg = (avg + value) / 2 |
| dict[key] = (min, max, avg, count + 1) |
| |
| def clear_term(): |
| print("\x1b[H\x1b[2J") |
| |
| audit_package_warned = False |
| |
| try: |
| import audit |
| machine_to_id = { |
| 'x86_64': audit.MACH_86_64, |
| 'alpha' : audit.MACH_ALPHA, |
| 'ia64' : audit.MACH_IA64, |
| 'ppc' : audit.MACH_PPC, |
| 'ppc64' : audit.MACH_PPC64, |
| 's390' : audit.MACH_S390, |
| 's390x' : audit.MACH_S390X, |
| 'i386' : audit.MACH_X86, |
| 'i586' : audit.MACH_X86, |
| 'i686' : audit.MACH_X86, |
| } |
| try: |
| machine_to_id['armeb'] = audit.MACH_ARMEB |
| except: |
| pass |
| machine_id = machine_to_id[os.uname()[4]] |
| except: |
| if not audit_package_warned: |
| audit_package_warned = True |
| print "Install the audit-libs-python package to get syscall names" |
| |
| def syscall_name(id): |
| try: |
| return audit.audit_syscall_to_name(id, machine_id) |
| except: |
| return str(id) |
| |
| def strerror(nr): |
| try: |
| return errno.errorcode[abs(nr)] |
| except: |
| return "Unknown %d errno" % nr |
