mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2025-11-01 00:24:26 +03:00
f0b3840fb6
python2 will be end of life by the time of the next libvirt release. All our supported build targets, including CentOS7, have a python3 build available. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
142 lines
4.3 KiB
Python
Executable File
142 lines
4.3 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
#
|
|
# Copyright (C) 2011-2019 Red Hat, Inc.
|
|
#
|
|
# This library is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU Lesser General Public
|
|
# License as published by the Free Software Foundation; either
|
|
# version 2.1 of the License, or (at your option) any later version.
|
|
#
|
|
# This library is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
# Lesser General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser General Public
|
|
# License along with this library. If not, see
|
|
# <http://www.gnu.org/licenses/>.
|
|
#
|
|
#
|
|
# Generate a set of systemtap probe definitions corresponding to
|
|
# DTrace probe markers in libvirt.so
|
|
#
|
|
# python dtrace2systemtap.py probes.d > libvirt_probes.stp
|
|
#
|
|
|
|
import re
|
|
import sys
|
|
|
|
file = None
|
|
filelist = []
|
|
files = {}
|
|
|
|
bindir = sys.argv[1]
|
|
sbindir = sys.argv[2]
|
|
libdir = sys.argv[3]
|
|
dtrace = sys.argv[4]
|
|
|
|
probe = None
|
|
args = None
|
|
|
|
# Read the DTraceprobes definition
|
|
|
|
with open(dtrace, "r") as fh:
|
|
lineno = 0
|
|
for line in fh:
|
|
lineno = lineno + 1
|
|
line = line.strip()
|
|
if line == "":
|
|
continue
|
|
if "provider " in line and "{" in line:
|
|
continue
|
|
if "};" in line:
|
|
continue
|
|
|
|
if line.startswith("#"):
|
|
m = re.search(r'''^\#\s*file:\s*(\S+)$''', line)
|
|
if m is not None:
|
|
file = m.group(1)
|
|
filelist.append(file)
|
|
files[file] = {"prefix": None, "probes": []}
|
|
continue
|
|
|
|
m = re.search(r'''^\#\s*prefix:\s*(\S+)$''', line)
|
|
if m is not None:
|
|
files[file]["prefix"] = m.group(1)
|
|
continue
|
|
|
|
m = re.search(r'''^\#\s*binary:\s*(\S+)$''', line)
|
|
if m is not None:
|
|
files[file]["binary"] = m.group(1)
|
|
continue
|
|
|
|
m = re.search(r'''^\#\s*module:\s*(\S+)$''', line)
|
|
if m is not None:
|
|
files[file]["module"] = m.group(1)
|
|
|
|
# ignore unknown comments
|
|
else:
|
|
m = re.search(r'''probe\s+([a-zA-Z0-9_]+)\((.*?)(\);)?$''', line)
|
|
if m is not None:
|
|
probe = m.group(1)
|
|
args = m.group(2)
|
|
if m.group(3) is not None:
|
|
files[file]["probes"].append([probe, args])
|
|
probe = None
|
|
args = None
|
|
elif probe is not None:
|
|
m = re.search(r'''^(.*?)(\);)?$''', line)
|
|
if m is not None:
|
|
args = args + m.group(1)
|
|
if m.group(2) is not None:
|
|
files[file]["probes"].append([probe, args])
|
|
probe = None
|
|
args = None
|
|
else:
|
|
raise Exception("unexpected data %s on line %d" %
|
|
(line, lineno))
|
|
else:
|
|
raise Exception("unexpected data %s on line %d" %
|
|
(line, lineno))
|
|
|
|
# Write out the SystemTap probes
|
|
for file in filelist:
|
|
prefix = files[file]["prefix"]
|
|
probes = files[file]["probes"]
|
|
|
|
print("# %s\n" % file)
|
|
for probe in probes:
|
|
name = probe[0]
|
|
args = probe[1]
|
|
|
|
pname = name.replace(prefix + "_", "libvirt." + prefix + ".")
|
|
|
|
binary = libdir + "/libvirt.so"
|
|
if "binary" in files[file]:
|
|
binary = sbindir + "/" + files[file]["binary"]
|
|
if "module" in files[file]:
|
|
binary = libdir + "/" + files[file]["module"]
|
|
|
|
print("probe %s = process(\"%s\").mark(\"%s\") {" %
|
|
(pname, binary, name))
|
|
|
|
argbits = args.split(",")
|
|
for idx in range(len(argbits)):
|
|
arg = argbits[idx]
|
|
isstr = False
|
|
if 'char *' in arg:
|
|
isstr = True
|
|
|
|
m = re.search(r'''^.*\s\*?(\S+)$''', arg)
|
|
if m is not None:
|
|
arg = m.group(1)
|
|
else:
|
|
raise Exception("Malformed arg %s" % arg)
|
|
|
|
if isstr:
|
|
print(" %s = user_string($arg%d);" % (arg, idx + 1))
|
|
else:
|
|
print(" %s = $arg%d;" % (arg, idx + 1))
|
|
print("}\n")
|
|
print("")
|