999e3fca90
The problem appeared due to a fact that stubs doesn't create a stack frame, reusing the stack frame of the caller function. When building stack traces, the current function is retrieved from PC, and its callees are retrieved by traversing the stack backwards. Thus, for stubs, the stub itself was discovered via PC, and then stub's caller's caller was retrieved from stack. To fix this problem, a pointer to JSFunction object is now captured from the topmost stack frame, and is saved into stack trace log record. Then a simple heuristics is applied whether a referred function should be added to decoded stack, or not, to avoid reporting the same function twice (from PC and from the pointer.) BUG=553 TEST=added to mjsunit/tools/tickprocessor Review URL: http://codereview.chromium.org/546089 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3673 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
572 lines
20 KiB
Python
572 lines
20 KiB
Python
# Copyright 2008 the V8 project authors. All rights reserved.
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials provided
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# with the distribution.
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# * Neither the name of Google Inc. nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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import csv, splaytree, sys, re
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from operator import itemgetter
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import getopt, os, string
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class CodeEntry(object):
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def __init__(self, start_addr, name):
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self.start_addr = start_addr
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self.tick_count = 0
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self.name = name
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self.stacks = {}
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def Tick(self, pc, stack):
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self.tick_count += 1
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if len(stack) > 0:
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stack.insert(0, self.ToString())
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stack_key = tuple(stack)
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self.stacks[stack_key] = self.stacks.setdefault(stack_key, 0) + 1
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def RegionTicks(self):
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return None
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def SetStartAddress(self, start_addr):
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self.start_addr = start_addr
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def ToString(self):
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return self.name
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def IsSharedLibraryEntry(self):
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return False
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def IsICEntry(self):
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return False
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def IsJSFunction(self):
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return False
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class SharedLibraryEntry(CodeEntry):
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def __init__(self, start_addr, name):
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CodeEntry.__init__(self, start_addr, name)
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def IsSharedLibraryEntry(self):
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return True
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class JSCodeEntry(CodeEntry):
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def __init__(self, start_addr, name, type, size, assembler):
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CodeEntry.__init__(self, start_addr, name)
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self.type = type
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self.size = size
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self.assembler = assembler
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self.region_ticks = None
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self.builtin_ic_re = re.compile('^(Keyed)?(Call|Load|Store)IC_')
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def Tick(self, pc, stack):
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super(JSCodeEntry, self).Tick(pc, stack)
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if not pc is None:
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offset = pc - self.start_addr
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seen = []
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narrowest = None
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narrowest_width = None
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for region in self.Regions():
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if region.Contains(offset):
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if (not region.name in seen):
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seen.append(region.name)
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if narrowest is None or region.Width() < narrowest.Width():
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narrowest = region
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if len(seen) == 0:
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return
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if self.region_ticks is None:
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self.region_ticks = {}
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for name in seen:
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if not name in self.region_ticks:
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self.region_ticks[name] = [0, 0]
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self.region_ticks[name][0] += 1
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if name == narrowest.name:
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self.region_ticks[name][1] += 1
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def RegionTicks(self):
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return self.region_ticks
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def Regions(self):
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if self.assembler:
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return self.assembler.regions
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else:
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return []
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def ToString(self):
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name = self.name
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if name == '':
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name = '<anonymous>'
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elif name.startswith(' '):
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name = '<anonymous>' + name
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return self.type + ': ' + name
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def IsICEntry(self):
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return self.type in ('CallIC', 'LoadIC', 'StoreIC') or \
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(self.type == 'Builtin' and self.builtin_ic_re.match(self.name))
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def IsJSFunction(self):
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return self.type in ('Function', 'LazyCompile', 'Script')
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class CodeRegion(object):
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def __init__(self, start_offset, name):
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self.start_offset = start_offset
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self.name = name
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self.end_offset = None
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def Contains(self, pc):
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return (self.start_offset <= pc) and (pc <= self.end_offset)
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def Width(self):
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return self.end_offset - self.start_offset
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class Assembler(object):
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def __init__(self):
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# Mapping from region ids to open regions
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self.pending_regions = {}
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self.regions = []
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class FunctionEnumerator(object):
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def __init__(self):
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self.known_funcs = {}
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self.next_func_id = 0
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def GetFunctionId(self, name):
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if not self.known_funcs.has_key(name):
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self.known_funcs[name] = self.next_func_id
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self.next_func_id += 1
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return self.known_funcs[name]
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def GetKnownFunctions(self):
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known_funcs_items = self.known_funcs.items();
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known_funcs_items.sort(key = itemgetter(1))
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result = []
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for func, id_not_used in known_funcs_items:
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result.append(func)
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return result
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VMStates = { 'JS': 0, 'GC': 1, 'COMPILER': 2, 'OTHER': 3, 'EXTERNAL' : 4 }
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class TickProcessor(object):
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def __init__(self):
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self.log_file = ''
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self.deleted_code = []
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self.vm_extent = {}
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# Map from assembler ids to the pending assembler objects
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self.pending_assemblers = {}
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# Map from code addresses the have been allocated but not yet officially
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# created to their assemblers.
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self.assemblers = {}
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self.js_entries = splaytree.SplayTree()
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self.cpp_entries = splaytree.SplayTree()
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self.total_number_of_ticks = 0
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self.number_of_library_ticks = 0
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self.unaccounted_number_of_ticks = 0
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self.excluded_number_of_ticks = 0
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self.number_of_gc_ticks = 0
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# Flag indicating whether to ignore unaccounted ticks in the report
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self.ignore_unknown = False
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self.func_enum = FunctionEnumerator()
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self.packed_stacks = []
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def ProcessLogfile(self, filename, included_state = None, ignore_unknown = False, separate_ic = False, call_graph_json = False):
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self.log_file = filename
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self.included_state = included_state
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self.ignore_unknown = ignore_unknown
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self.separate_ic = separate_ic
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self.call_graph_json = call_graph_json
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try:
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logfile = open(filename, 'rb')
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except IOError:
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sys.exit("Could not open logfile: " + filename)
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try:
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try:
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logreader = csv.reader(logfile)
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row_num = 1
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for row in logreader:
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row_num += 1
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if row[0] == 'tick':
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self.ProcessTick(int(row[1], 16), int(row[2], 16), int(row[3], 16), int(row[4]), self.PreprocessStack(row[5:]))
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elif row[0] == 'code-creation':
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self.ProcessCodeCreation(row[1], int(row[2], 16), int(row[3]), row[4])
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elif row[0] == 'code-move':
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self.ProcessCodeMove(int(row[1], 16), int(row[2], 16))
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elif row[0] == 'code-delete':
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self.ProcessCodeDelete(int(row[1], 16))
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elif row[0] == 'function-creation':
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self.ProcessFunctionCreation(int(row[1], 16), int(row[2], 16))
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elif row[0] == 'function-move':
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self.ProcessFunctionMove(int(row[1], 16), int(row[2], 16))
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elif row[0] == 'function-delete':
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self.ProcessFunctionDelete(int(row[1], 16))
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elif row[0] == 'shared-library':
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self.AddSharedLibraryEntry(row[1], int(row[2], 16), int(row[3], 16))
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self.ParseVMSymbols(row[1], int(row[2], 16), int(row[3], 16))
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elif row[0] == 'begin-code-region':
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self.ProcessBeginCodeRegion(int(row[1], 16), int(row[2], 16), int(row[3], 16), row[4])
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elif row[0] == 'end-code-region':
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self.ProcessEndCodeRegion(int(row[1], 16), int(row[2], 16), int(row[3], 16))
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elif row[0] == 'code-allocate':
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self.ProcessCodeAllocate(int(row[1], 16), int(row[2], 16))
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except csv.Error:
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print("parse error in line " + str(row_num))
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raise
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finally:
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logfile.close()
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def AddSharedLibraryEntry(self, filename, start, end):
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# Mark the pages used by this library.
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i = start
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while i < end:
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page = i >> 12
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self.vm_extent[page] = 1
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i += 4096
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# Add the library to the entries so that ticks for which we do not
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# have symbol information is reported as belonging to the library.
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self.cpp_entries.Insert(start, SharedLibraryEntry(start, filename))
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def ParseVMSymbols(self, filename, start, end):
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return
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def ProcessCodeAllocate(self, addr, assem):
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if assem in self.pending_assemblers:
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assembler = self.pending_assemblers.pop(assem)
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self.assemblers[addr] = assembler
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def ProcessCodeCreation(self, type, addr, size, name):
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if addr in self.assemblers:
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assembler = self.assemblers.pop(addr)
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else:
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assembler = None
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self.js_entries.Insert(addr, JSCodeEntry(addr, name, type, size, assembler))
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def ProcessCodeMove(self, from_addr, to_addr):
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try:
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removed_node = self.js_entries.Remove(from_addr)
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removed_node.value.SetStartAddress(to_addr);
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self.js_entries.Insert(to_addr, removed_node.value)
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except splaytree.KeyNotFoundError:
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print('Code move event for unknown code: 0x%x' % from_addr)
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def ProcessCodeDelete(self, from_addr):
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try:
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removed_node = self.js_entries.Remove(from_addr)
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self.deleted_code.append(removed_node.value)
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except splaytree.KeyNotFoundError:
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print('Code delete event for unknown code: 0x%x' % from_addr)
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def ProcessFunctionCreation(self, func_addr, code_addr):
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js_entry_node = self.js_entries.Find(code_addr)
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if js_entry_node:
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js_entry = js_entry_node.value
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self.js_entries.Insert(func_addr, JSCodeEntry(func_addr, js_entry.name, js_entry.type, 1, None))
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def ProcessFunctionMove(self, from_addr, to_addr):
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try:
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removed_node = self.js_entries.Remove(from_addr)
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removed_node.value.SetStartAddress(to_addr);
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self.js_entries.Insert(to_addr, removed_node.value)
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except splaytree.KeyNotFoundError:
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return
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def ProcessFunctionDelete(self, from_addr):
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try:
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removed_node = self.js_entries.Remove(from_addr)
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self.deleted_code.append(removed_node.value)
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except splaytree.KeyNotFoundError:
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return
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def ProcessBeginCodeRegion(self, id, assm, start, name):
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if not assm in self.pending_assemblers:
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self.pending_assemblers[assm] = Assembler()
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assembler = self.pending_assemblers[assm]
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assembler.pending_regions[id] = CodeRegion(start, name)
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def ProcessEndCodeRegion(self, id, assm, end):
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assm = self.pending_assemblers[assm]
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region = assm.pending_regions.pop(id)
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region.end_offset = end
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assm.regions.append(region)
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def IncludeTick(self, pc, sp, state):
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return (self.included_state is None) or (self.included_state == state)
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def FindEntry(self, pc):
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page = pc >> 12
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if page in self.vm_extent:
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entry = self.cpp_entries.FindGreatestsLessThan(pc)
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if entry != None:
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return entry.value
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else:
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return entry
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max = self.js_entries.FindMax()
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min = self.js_entries.FindMin()
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if max != None and pc < (max.key + max.value.size) and pc > min.key:
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return self.js_entries.FindGreatestsLessThan(pc).value
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return None
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def PreprocessStack(self, stack):
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# remove all non-addresses (e.g. 'overflow') and convert to int
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result = []
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for frame in stack:
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if frame.startswith('0x'):
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result.append(int(frame, 16))
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return result
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def ProcessStack(self, stack):
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result = []
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for frame in stack:
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entry = self.FindEntry(frame)
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if entry != None:
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result.append(entry.ToString())
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return result
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def ProcessTick(self, pc, sp, func, state, stack):
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if state == VMStates['GC']:
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self.number_of_gc_ticks += 1
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if not self.IncludeTick(pc, sp, state):
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self.excluded_number_of_ticks += 1;
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return
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self.total_number_of_ticks += 1
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entry = self.FindEntry(pc)
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if entry == None:
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self.unaccounted_number_of_ticks += 1
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return
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if entry.IsSharedLibraryEntry():
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self.number_of_library_ticks += 1
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if entry.IsICEntry() and not self.separate_ic:
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if len(stack) > 0:
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caller_pc = stack.pop(0)
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self.total_number_of_ticks -= 1
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self.ProcessTick(caller_pc, sp, func, state, stack)
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else:
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self.unaccounted_number_of_ticks += 1
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else:
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processed_stack = self.ProcessStack(stack)
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if not entry.IsSharedLibraryEntry() and not entry.IsJSFunction():
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func_entry_node = self.js_entries.Find(func)
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if func_entry_node and func_entry_node.value.IsJSFunction():
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processed_stack.insert(0, func_entry_node.value.ToString())
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entry.Tick(pc, processed_stack)
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if self.call_graph_json:
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self.AddToPackedStacks(pc, stack)
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def AddToPackedStacks(self, pc, stack):
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full_stack = stack
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full_stack.insert(0, pc)
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func_names = self.ProcessStack(full_stack)
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func_ids = []
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for func in func_names:
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func_ids.append(self.func_enum.GetFunctionId(func))
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self.packed_stacks.append(func_ids)
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def PrintResults(self):
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if not self.call_graph_json:
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self.PrintStatistics()
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else:
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self.PrintCallGraphJSON()
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def PrintStatistics(self):
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print('Statistical profiling result from %s, (%d ticks, %d unaccounted, %d excluded).' %
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(self.log_file,
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self.total_number_of_ticks,
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self.unaccounted_number_of_ticks,
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self.excluded_number_of_ticks))
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if self.total_number_of_ticks > 0:
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js_entries = self.js_entries.ExportValueList()
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js_entries.extend(self.deleted_code)
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cpp_entries = self.cpp_entries.ExportValueList()
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# Print the unknown ticks percentage if they are not ignored.
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if not self.ignore_unknown and self.unaccounted_number_of_ticks > 0:
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self.PrintHeader('Unknown')
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self.PrintCounter(self.unaccounted_number_of_ticks)
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# Print the library ticks.
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self.PrintHeader('Shared libraries')
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self.PrintEntries(cpp_entries, lambda e:e.IsSharedLibraryEntry())
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# Print the JavaScript ticks.
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self.PrintHeader('JavaScript')
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self.PrintEntries(js_entries, lambda e:not e.IsSharedLibraryEntry())
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# Print the C++ ticks.
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self.PrintHeader('C++')
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self.PrintEntries(cpp_entries, lambda e:not e.IsSharedLibraryEntry())
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# Print the GC ticks.
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self.PrintHeader('GC')
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self.PrintCounter(self.number_of_gc_ticks)
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# Print call profile.
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print('\n [Call profile]:')
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print(' total call path')
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js_entries.extend(cpp_entries)
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self.PrintCallProfile(js_entries)
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def PrintHeader(self, header_title):
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print('\n [%s]:' % header_title)
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print(' ticks total nonlib name')
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def PrintCounter(self, ticks_count):
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percentage = ticks_count * 100.0 / self.total_number_of_ticks
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print(' %(ticks)5d %(total)5.1f%%' % {
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'ticks' : ticks_count,
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'total' : percentage,
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})
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def PrintEntries(self, entries, condition):
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# If ignoring unaccounted ticks don't include these in percentage
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# calculations
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number_of_accounted_ticks = self.total_number_of_ticks
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if self.ignore_unknown:
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number_of_accounted_ticks -= self.unaccounted_number_of_ticks
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number_of_non_library_ticks = number_of_accounted_ticks - self.number_of_library_ticks
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entries.sort(key=lambda e: (e.tick_count, e.ToString()), reverse=True)
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for entry in entries:
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if entry.tick_count > 0 and condition(entry):
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total_percentage = entry.tick_count * 100.0 / number_of_accounted_ticks
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if entry.IsSharedLibraryEntry():
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non_library_percentage = 0
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else:
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non_library_percentage = entry.tick_count * 100.0 / number_of_non_library_ticks
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print(' %(ticks)5d %(total)5.1f%% %(nonlib)6.1f%% %(name)s' % {
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'ticks' : entry.tick_count,
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'total' : total_percentage,
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'nonlib' : non_library_percentage,
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'name' : entry.ToString()
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})
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region_ticks = entry.RegionTicks()
|
|
if not region_ticks is None:
|
|
items = region_ticks.items()
|
|
items.sort(key=lambda e: e[1][1], reverse=True)
|
|
for (name, ticks) in items:
|
|
print(' flat cum')
|
|
print(' %(flat)5.1f%% %(accum)5.1f%% %(name)s' % {
|
|
'flat' : ticks[1] * 100.0 / entry.tick_count,
|
|
'accum' : ticks[0] * 100.0 / entry.tick_count,
|
|
'name': name
|
|
})
|
|
|
|
def PrintCallProfile(self, entries):
|
|
all_stacks = {}
|
|
total_stacks = 0
|
|
for entry in entries:
|
|
all_stacks.update(entry.stacks)
|
|
for count in entry.stacks.itervalues():
|
|
total_stacks += count
|
|
all_stacks_items = all_stacks.items();
|
|
all_stacks_items.sort(key = itemgetter(1), reverse=True)
|
|
missing_percentage = (self.total_number_of_ticks - total_stacks) * 100.0 / self.total_number_of_ticks
|
|
print(' %(ticks)5d %(total)5.1f%% <no call path information>' % {
|
|
'ticks' : self.total_number_of_ticks - total_stacks,
|
|
'total' : missing_percentage
|
|
})
|
|
for stack, count in all_stacks_items:
|
|
total_percentage = count * 100.0 / self.total_number_of_ticks
|
|
print(' %(ticks)5d %(total)5.1f%% %(call_path)s' % {
|
|
'ticks' : count,
|
|
'total' : total_percentage,
|
|
'call_path' : stack[0] + ' <- ' + stack[1]
|
|
})
|
|
|
|
def PrintCallGraphJSON(self):
|
|
print('\nvar __profile_funcs = ["' +
|
|
'",\n"'.join(self.func_enum.GetKnownFunctions()) +
|
|
'"];')
|
|
print('var __profile_ticks = [')
|
|
str_packed_stacks = []
|
|
for stack in self.packed_stacks:
|
|
str_packed_stacks.append('[' + ','.join(map(str, stack)) + ']')
|
|
print(',\n'.join(str_packed_stacks))
|
|
print('];')
|
|
|
|
class CmdLineProcessor(object):
|
|
|
|
def __init__(self):
|
|
self.options = ["js",
|
|
"gc",
|
|
"compiler",
|
|
"other",
|
|
"external",
|
|
"ignore-unknown",
|
|
"separate-ic",
|
|
"call-graph-json"]
|
|
# default values
|
|
self.state = None
|
|
self.ignore_unknown = False
|
|
self.log_file = None
|
|
self.separate_ic = False
|
|
self.call_graph_json = False
|
|
|
|
def ProcessArguments(self):
|
|
try:
|
|
opts, args = getopt.getopt(sys.argv[1:], "jgcoe", self.options)
|
|
except getopt.GetoptError:
|
|
self.PrintUsageAndExit()
|
|
for key, value in opts:
|
|
if key in ("-j", "--js"):
|
|
self.state = VMStates['JS']
|
|
if key in ("-g", "--gc"):
|
|
self.state = VMStates['GC']
|
|
if key in ("-c", "--compiler"):
|
|
self.state = VMStates['COMPILER']
|
|
if key in ("-o", "--other"):
|
|
self.state = VMStates['OTHER']
|
|
if key in ("-e", "--external"):
|
|
self.state = VMStates['EXTERNAL']
|
|
if key in ("--ignore-unknown"):
|
|
self.ignore_unknown = True
|
|
if key in ("--separate-ic"):
|
|
self.separate_ic = True
|
|
if key in ("--call-graph-json"):
|
|
self.call_graph_json = True
|
|
self.ProcessRequiredArgs(args)
|
|
|
|
def ProcessRequiredArgs(self, args):
|
|
return
|
|
|
|
def GetRequiredArgsNames(self):
|
|
return
|
|
|
|
def PrintUsageAndExit(self):
|
|
print('Usage: %(script_name)s --{%(opts)s} %(req_opts)s' % {
|
|
'script_name': os.path.basename(sys.argv[0]),
|
|
'opts': string.join(self.options, ','),
|
|
'req_opts': self.GetRequiredArgsNames()
|
|
})
|
|
sys.exit(2)
|
|
|
|
def RunLogfileProcessing(self, tick_processor):
|
|
tick_processor.ProcessLogfile(self.log_file, self.state, self.ignore_unknown,
|
|
self.separate_ic, self.call_graph_json)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit('You probably want to run windows-tick-processor.py or linux-tick-processor.py.')
|