summaryrefslogtreecommitdiff
path: root/bin
diff options
context:
space:
mode:
authorJosé Fonseca <jrfonseca@tungstengraphics.com>2008-05-24 19:26:14 +0900
committerJosé Fonseca <jrfonseca@tungstengraphics.com>2008-05-24 19:26:14 +0900
commit63ddae0990336901743c536d83ec63e1b0a2cb8c (patch)
tree614d7ff00377e35462e3fc2675fc404644bfd1ec /bin
parent345eb7fb70840829571cbacdb3980181df8e018a (diff)
gallium: Pre-processor for win32 kernel profile output.
Diffstat (limited to 'bin')
-rwxr-xr-xbin/win32kprof.py205
1 files changed, 205 insertions, 0 deletions
diff --git a/bin/win32kprof.py b/bin/win32kprof.py
new file mode 100755
index 00000000000..9e0873a5cec
--- /dev/null
+++ b/bin/win32kprof.py
@@ -0,0 +1,205 @@
+#!/usr/bin/env python
+
+import sys
+import optparse
+import re
+import struct
+
+__version__ = '0.1'
+
+verbose = False
+
+class Profile:
+
+ def __init__(self):
+ self.symbols = []
+ self.symbol_cache = {}
+ self.base_addr = None
+ self.functions = {}
+ self.last_stamp = 0
+ self.stamp_base = 0
+
+ def demangle(self, name):
+ if name.startswith('_'):
+ name = name[1:]
+ idx = name.rfind('@')
+ if idx != -1 and name[idx+1:].isdigit():
+ name = name[:idx]
+ # TODO: Demangle C++ names
+ return name
+
+ def unwrap_stamp(self, stamp):
+ if stamp < self.last_stamp:
+ self.stamp_base += 1 << 32
+ self.last_stamp = stamp
+ return self.stamp_base + stamp
+
+ def read_map(self, mapfile):
+ # See http://msdn.microsoft.com/en-us/library/k7xkk3e2.aspx
+ last_addr = 0
+ last_name = 0
+ for line in file(mapfile, "rt"):
+ fields = line.split()
+ try:
+ section_offset, name, addr, type, lib_object = fields
+ except ValueError:
+ continue
+ if type != 'f':
+ continue
+ addr = int(addr, 16)
+ name = self.demangle(name)
+ if last_addr == addr:
+ # TODO: handle collapsed functions
+ #assert last_name == name
+ continue
+ self.symbols.append((addr, name))
+ last_addr = addr
+ last_name = name
+
+ # sort symbols
+ self.symbols.sort(key = lambda (addr, name): addr)
+
+ def lookup_addr(self, addr):
+ try:
+ return self.symbol_cache[addr]
+ except KeyError:
+ pass
+
+ tolerance = 4196
+ s, e = 0, len(self.symbols)
+ while s != e:
+ i = (s + e)//2
+ start_addr, name = self.symbols[i]
+ try:
+ end_addr, next_name = self.symbols[i + 1]
+ except IndexError:
+ end_addr = start_addr + tolerance
+ if addr < start_addr:
+ e = i
+ continue
+ if addr == end_addr:
+ return next_name
+ if addr > end_addr:
+ s = i
+ continue
+ return name
+ return "0x%08x" % addr
+
+ def lookup_symbol(self, name):
+ for symbol_addr, symbol_name in self.symbols:
+ if name == symbol_name:
+ return symbol_addr
+ return 0
+
+ def read_data(self, data):
+ # TODO: compute these automatically
+ caller_overhead = 672 - 2*144 # __debug_profile_reference2 - 2*__debug_profile_reference1
+ callee_overhead = 144 # __debug_profile_reference1
+ callee_overhead -= 48 # tolerance
+ caller_overhead = callee_overhead
+
+ fp = file(data, "rb")
+ entry_format = "II"
+ entry_size = struct.calcsize(entry_format)
+ stack = []
+ last_stamp = 0
+ delta = 0
+ while True:
+ entry = fp.read(entry_size)
+ if len(entry) < entry_size:
+ break
+ addr_exit, stamp = struct.unpack(entry_format, entry)
+ if addr_exit == 0 and stamp == 0:
+ break
+ addr = addr_exit & 0xfffffffe
+ exit = addr_exit & 0x00000001
+
+ if self.base_addr is None:
+ ref_addr = self.lookup_symbol('__debug_profile_reference2')
+ if ref_addr:
+ self.base_addr = addr - ref_addr
+ else:
+ self.base_addr = 0
+ #print hex(self.base_addr)
+ rel_addr = addr - self.base_addr
+ #print hex(addr - self.base_addr)
+
+ name = self.lookup_addr(rel_addr)
+ stamp = self.unwrap_stamp(stamp)
+
+ delta += stamp - last_stamp
+
+ if not exit:
+ if verbose >= 2:
+ print "%10u >> 0x%08x" % (stamp, addr)
+ if verbose:
+ print "%10u >> %s" % (stamp, name)
+ delta -= caller_overhead
+ stack.append((name, stamp, delta))
+ delta = 0
+ else:
+ if verbose >= 2:
+ print "%10u << 0x%08x" % (stamp, addr)
+ if len(stack):
+ self_time = delta - callee_overhead
+ entry_name, entry_stamp, delta = stack.pop()
+ if entry_name != name:
+ if verbose:
+ print "%10u << %s" % (stamp, name)
+ #assert entry_name == name
+ break
+ total_time = stamp - entry_stamp
+ self.functions[entry_name] = self.functions.get(entry_name, 0) + self_time
+ if verbose:
+ print "%10u << %s %+u" % (stamp, name, self_time)
+ else:
+ delta = 0
+
+ last_stamp = stamp
+
+ def write_report(self):
+ total = sum(self.functions.values())
+ results = self.functions.items()
+ results.sort(key = lambda (name, time): -time)
+ for name, time in results:
+ perc = float(time)/float(total)*100.0
+ print "%6.03f %s" % (perc, name)
+
+
+def main():
+ parser = optparse.OptionParser(
+ usage="\n\t%prog [options] [file] ...",
+ version="%%prog %s" % __version__)
+ parser.add_option(
+ '-m', '--map', metavar='FILE',
+ type="string", dest="map",
+ help="map file")
+ parser.add_option(
+ '-b', '--base', metavar='FILE',
+ type="string", dest="base",
+ help="base addr")
+ parser.add_option(
+ '-v', '--verbose',
+ action="count",
+ dest="verbose", default=0,
+ help="verbose output")
+ (options, args) = parser.parse_args(sys.argv[1:])
+
+ global verbose
+ verbose = options.verbose
+
+ profile = Profile()
+ if options.base is not None:
+ profile.base_addr = int(options.base, 16)
+ if options.map is not None:
+ profile.read_map(options.map)
+ for arg in args:
+ profile.read_data(arg)
+ profile.write_report()
+
+if __name__ == '__main__':
+ main()
+
+
+
+