# Util.py - Python extension for perf script, miscellaneous utility code
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#
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# Copyright (C) 2010 by Tom Zanussi <tzanussi@gmail.com>
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#
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# This software may be distributed under the terms of the GNU General
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# Public License ("GPL") version 2 as published by the Free Software
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# Foundation.
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from __future__ import print_function
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import errno, os
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FUTEX_WAIT = 0
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FUTEX_WAKE = 1
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FUTEX_PRIVATE_FLAG = 128
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FUTEX_CLOCK_REALTIME = 256
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FUTEX_CMD_MASK = ~(FUTEX_PRIVATE_FLAG | FUTEX_CLOCK_REALTIME)
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NSECS_PER_SEC = 1000000000
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def avg(total, n):
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return total / n
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def nsecs(secs, nsecs):
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return secs * NSECS_PER_SEC + nsecs
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def nsecs_secs(nsecs):
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return nsecs / NSECS_PER_SEC
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def nsecs_nsecs(nsecs):
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return nsecs % NSECS_PER_SEC
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def nsecs_str(nsecs):
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str = "%5u.%09u" % (nsecs_secs(nsecs), nsecs_nsecs(nsecs)),
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return str
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def add_stats(dict, key, value):
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if key not in dict:
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dict[key] = (value, value, value, 1)
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else:
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min, max, avg, count = dict[key]
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if value < min:
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min = value
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if value > max:
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max = value
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avg = (avg + value) / 2
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dict[key] = (min, max, avg, count + 1)
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def clear_term():
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print("\x1b[H\x1b[2J")
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audit_package_warned = False
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try:
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import audit
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machine_to_id = {
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'x86_64': audit.MACH_86_64,
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'alpha' : audit.MACH_ALPHA,
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'ia64' : audit.MACH_IA64,
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'ppc' : audit.MACH_PPC,
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'ppc64' : audit.MACH_PPC64,
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'ppc64le' : audit.MACH_PPC64LE,
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's390' : audit.MACH_S390,
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's390x' : audit.MACH_S390X,
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'i386' : audit.MACH_X86,
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'i586' : audit.MACH_X86,
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'i686' : audit.MACH_X86,
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}
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try:
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machine_to_id['armeb'] = audit.MACH_ARMEB
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except:
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pass
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machine_id = machine_to_id[os.uname()[4]]
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except:
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if not audit_package_warned:
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audit_package_warned = True
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print("Install the audit-libs-python package to get syscall names.\n"
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"For example:\n # apt-get install python-audit (Ubuntu)"
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"\n # yum install audit-libs-python (Fedora)"
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"\n etc.\n")
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def syscall_name(id):
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try:
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return audit.audit_syscall_to_name(id, machine_id)
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except:
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return str(id)
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def strerror(nr):
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try:
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return errno.errorcode[abs(nr)]
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except:
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return "Unknown %d errno" % nr
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