// Copyright 2009 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
function Profile(separateIc) {
devtools.profiler.Profile.call(this);
if (!separateIc) {
this.skipThisFunction = function(name) { return Profile.IC_RE.test(name); };
}
};
Profile.prototype = devtools.profiler.Profile.prototype;
Profile.IC_RE =
/^(?:CallIC|LoadIC|StoreIC)|(?:Builtin: (?:Keyed)?(?:Call|Load|Store)IC_)/;
/**
* A thin wrapper around shell's 'read' function showing a file name on error.
*/
function readFile(fileName) {
try {
return read(fileName);
} catch (e) {
print(fileName + ': ' + (e.message || e));
throw e;
}
}
function inherits(childCtor, parentCtor) {
childCtor.prototype.__proto__ = parentCtor.prototype;
};
function SnapshotLogProcessor() {
devtools.profiler.LogReader.call(this, {
'code-creation': {
parsers: [null, this.createAddressParser('code'), parseInt, null],
processor: this.processCodeCreation, backrefs: true },
'code-move': { parsers: [this.createAddressParser('code'),
this.createAddressParser('code-move-to')],
processor: this.processCodeMove, backrefs: true },
'code-delete': { parsers: [this.createAddressParser('code')],
processor: this.processCodeDelete, backrefs: true },
'function-creation': null,
'function-move': null,
'function-delete': null,
'snapshot-pos': { parsers: [this.createAddressParser('code'), parseInt],
processor: this.processSnapshotPosition, backrefs: true }});
Profile.prototype.handleUnknownCode = function(operation, addr) {
var op = devtools.profiler.Profile.Operation;
switch (operation) {
case op.MOVE:
print('Snapshot: Code move event for unknown code: 0x' +
addr.toString(16));
break;
case op.DELETE:
print('Snapshot: Code delete event for unknown code: 0x' +
addr.toString(16));
break;
}
};
this.profile_ = new Profile();
this.serializedEntries_ = [];
}
inherits(SnapshotLogProcessor, devtools.profiler.LogReader);
SnapshotLogProcessor.prototype.processCodeCreation = function(
type, start, size, name) {
var entry = this.profile_.addCode(
this.expandAlias(type), name, start, size);
};
SnapshotLogProcessor.prototype.processCodeMove = function(from, to) {
this.profile_.moveCode(from, to);
};
SnapshotLogProcessor.prototype.processCodeDelete = function(start) {
this.profile_.deleteCode(start);
};
SnapshotLogProcessor.prototype.processSnapshotPosition = function(addr, pos) {
this.serializedEntries_[pos] = this.profile_.findEntry(addr);
};
SnapshotLogProcessor.prototype.processLogFile = function(fileName) {
var contents = readFile(fileName);
this.processLogChunk(contents);
};
SnapshotLogProcessor.prototype.getSerializedEntryName = function(pos) {
var entry = this.serializedEntries_[pos];
return entry ? entry.getRawName() : null;
};
function TickProcessor(
cppEntriesProvider, separateIc, ignoreUnknown, stateFilter, snapshotLogProcessor) {
devtools.profiler.LogReader.call(this, {
'shared-library': { parsers: [null, parseInt, parseInt],
processor: this.processSharedLibrary },
'code-creation': {
parsers: [null, this.createAddressParser('code'), parseInt, null],
processor: this.processCodeCreation, backrefs: true },
'code-move': { parsers: [this.createAddressParser('code'),
this.createAddressParser('code-move-to')],
processor: this.processCodeMove, backrefs: true },
'code-delete': { parsers: [this.createAddressParser('code')],
processor: this.processCodeDelete, backrefs: true },
'function-creation': { parsers: [this.createAddressParser('code'),
this.createAddressParser('function-obj')],
processor: this.processFunctionCreation, backrefs: true },
'function-move': { parsers: [this.createAddressParser('code'),
this.createAddressParser('code-move-to')],
processor: this.processFunctionMove, backrefs: true },
'function-delete': { parsers: [this.createAddressParser('code')],
processor: this.processFunctionDelete, backrefs: true },
'snapshot-pos': { parsers: [this.createAddressParser('code'), parseInt],
processor: this.processSnapshotPosition, backrefs: true },
'tick': { parsers: [this.createAddressParser('code'),
this.createAddressParser('stack'),
this.createAddressParser('func'), parseInt, 'var-args'],
processor: this.processTick, backrefs: true },
'heap-sample-begin': { parsers: [null, null, parseInt],
processor: this.processHeapSampleBegin },
'heap-sample-end': { parsers: [null, null],
processor: this.processHeapSampleEnd },
'heap-js-prod-item': { parsers: [null, 'var-args'],
processor: this.processJSProducer, backrefs: true },
// Ignored events.
'profiler': null,
'heap-sample-stats': null,
'heap-sample-item': null,
'heap-js-cons-item': null,
'heap-js-ret-item': null,
// Obsolete row types.
'code-allocate': null,
'begin-code-region': null,
'end-code-region': null });
this.cppEntriesProvider_ = cppEntriesProvider;
this.ignoreUnknown_ = ignoreUnknown;
this.stateFilter_ = stateFilter;
this.snapshotLogProcessor_ = snapshotLogProcessor;
this.deserializedEntriesNames_ = [];
var ticks = this.ticks_ =
{ total: 0, unaccounted: 0, excluded: 0, gc: 0 };
Profile.prototype.handleUnknownCode = function(
operation, addr, opt_stackPos) {
var op = devtools.profiler.Profile.Operation;
switch (operation) {
case op.MOVE:
print('Code move event for unknown code: 0x' + addr.toString(16));
break;
case op.DELETE:
print('Code delete event for unknown code: 0x' + addr.toString(16));
break;
case op.TICK:
// Only unknown PCs (the first frame) are reported as unaccounted,
// otherwise tick balance will be corrupted (this behavior is compatible
// with the original tickprocessor.py script.)
if (opt_stackPos == 0) {
ticks.unaccounted++;
}
break;
}
};
this.profile_ = new Profile(separateIc);
this.codeTypes_ = {};
// Count each tick as a time unit.
this.viewBuilder_ = new devtools.profiler.ViewBuilder(1);
this.lastLogFileName_ = null;
this.generation_ = 1;
this.currentProducerProfile_ = null;
};
inherits(TickProcessor, devtools.profiler.LogReader);
TickProcessor.VmStates = {
JS: 0,
GC: 1,
COMPILER: 2,
OTHER: 3,
EXTERNAL: 4
};
TickProcessor.CodeTypes = {
CPP: 0,
SHARED_LIB: 1
};
// Otherwise, this is JS-related code. We are not adding it to
// codeTypes_ map because there can be zillions of them.
TickProcessor.CALL_PROFILE_CUTOFF_PCT = 2.0;
/**
* @override
*/
TickProcessor.prototype.printError = function(str) {
print(str);
};
TickProcessor.prototype.setCodeType = function(name, type) {
this.codeTypes_[name] = TickProcessor.CodeTypes[type];
};
TickProcessor.prototype.isSharedLibrary = function(name) {
return this.codeTypes_[name] == TickProcessor.CodeTypes.SHARED_LIB;
};
TickProcessor.prototype.isCppCode = function(name) {
return this.codeTypes_[name] == TickProcessor.CodeTypes.CPP;
};
TickProcessor.prototype.isJsCode = function(name) {
return !(name in this.codeTypes_);
};
TickProcessor.prototype.processLogFile = function(fileName) {
this.lastLogFileName_ = fileName;
var line;
while (line = readline()) {
this.processLogLine(line);
}
};
TickProcessor.prototype.processLogFileInTest = function(fileName) {
// Hack file name to avoid dealing with platform specifics.
this.lastLogFileName_ = 'v8.log';
var contents = readFile(fileName);
this.processLogChunk(contents);
};
TickProcessor.prototype.processSharedLibrary = function(
name, startAddr, endAddr) {
var entry = this.profile_.addLibrary(name, startAddr, endAddr);
this.setCodeType(entry.getName(), 'SHARED_LIB');
var self = this;
var libFuncs = this.cppEntriesProvider_.parseVmSymbols(
name, startAddr, endAddr, function(fName, fStart, fEnd) {
self.profile_.addStaticCode(fName, fStart, fEnd);
self.setCodeType(fName, 'CPP');
});
};
TickProcessor.prototype.processCodeCreation = function(
type, start, size, name) {
name = this.deserializedEntriesNames_[start] || name;
var entry = this.profile_.addCode(
this.expandAlias(type), name, start, size);
};
TickProcessor.prototype.processCodeMove = function(from, to) {
this.profile_.moveCode(from, to);
};
TickProcessor.prototype.processCodeDelete = function(start) {
this.profile_.deleteCode(start);
};
TickProcessor.prototype.processFunctionCreation = function(
functionAddr, codeAddr) {
this.profile_.addCodeAlias(functionAddr, codeAddr);
};
TickProcessor.prototype.processFunctionMove = function(from, to) {
this.profile_.safeMoveDynamicCode(from, to);
};
TickProcessor.prototype.processFunctionDelete = function(start) {
this.profile_.safeDeleteDynamicCode(start);
};
TickProcessor.prototype.processSnapshotPosition = function(addr, pos) {
if (this.snapshotLogProcessor_) {
this.deserializedEntriesNames_[addr] =
this.snapshotLogProcessor_.getSerializedEntryName(pos);
}
};
TickProcessor.prototype.includeTick = function(vmState) {
return this.stateFilter_ == null || this.stateFilter_ == vmState;
};
TickProcessor.prototype.processTick = function(pc, sp, func, vmState, stack) {
this.ticks_.total++;
if (vmState == TickProcessor.VmStates.GC) this.ticks_.gc++;
if (!this.includeTick(vmState)) {
this.ticks_.excluded++;
return;
}
if (func) {
var funcEntry = this.profile_.findEntry(func);
if (!funcEntry || !funcEntry.isJSFunction || !funcEntry.isJSFunction()) {
func = 0;
} else {
var currEntry = this.profile_.findEntry(pc);
if (!currEntry || !currEntry.isJSFunction || currEntry.isJSFunction()) {
func = 0;
}
}
}
this.profile_.recordTick(this.processStack(pc, func, stack));
};
TickProcessor.prototype.processHeapSampleBegin = function(space, state, ticks) {
if (space != 'Heap') return;
this.currentProducerProfile_ = new devtools.profiler.CallTree();
};
TickProcessor.prototype.processHeapSampleEnd = function(space, state) {
if (space != 'Heap' || !this.currentProducerProfile_) return;
print('Generation ' + this.generation_ + ':');
var tree = this.currentProducerProfile_;
tree.computeTotalWeights();
var producersView = this.viewBuilder_.buildView(tree);
// Sort by total time, desc, then by name, desc.
producersView.sort(function(rec1, rec2) {
return rec2.totalTime - rec1.totalTime ||
(rec2.internalFuncName < rec1.internalFuncName ? -1 : 1); });
this.printHeavyProfile(producersView.head.children);
this.currentProducerProfile_ = null;
this.generation_++;
};
TickProcessor.prototype.processJSProducer = function(constructor, stack) {
if (!this.currentProducerProfile_) return;
if (stack.length == 0) return;
var first = stack.shift();
var processedStack =
this.profile_.resolveAndFilterFuncs_(this.processStack(first, 0, stack));
processedStack.unshift(constructor);
this.currentProducerProfile_.addPath(processedStack);
};
TickProcessor.prototype.printStatistics = function() {
print('Statistical profiling result from ' + this.lastLogFileName_ +
', (' + this.ticks_.total +
' ticks, ' + this.ticks_.unaccounted + ' unaccounted, ' +
this.ticks_.excluded + ' excluded).');
if (this.ticks_.total == 0) return;
// Print the unknown ticks percentage if they are not ignored.
if (!this.ignoreUnknown_ && this.ticks_.unaccounted > 0) {
this.printHeader('Unknown');
this.printCounter(this.ticks_.unaccounted, this.ticks_.total);
}
var flatProfile = this.profile_.getFlatProfile();
var flatView = this.viewBuilder_.buildView(flatProfile);
// Sort by self time, desc, then by name, desc.
flatView.sort(function(rec1, rec2) {
return rec2.selfTime - rec1.selfTime ||
(rec2.internalFuncName < rec1.internalFuncName ? -1 : 1); });
var totalTicks = this.ticks_.total;
if (this.ignoreUnknown_) {
totalTicks -= this.ticks_.unaccounted;
}
// Our total time contains all the ticks encountered,
// while profile only knows about the filtered ticks.
flatView.head.totalTime = totalTicks;
// Count library ticks
var flatViewNodes = flatView.head.children;
var self = this;
var libraryTicks = 0;
this.processProfile(flatViewNodes,
function(name) { return self.isSharedLibrary(name); },
function(rec) { libraryTicks += rec.selfTime; });
var nonLibraryTicks = totalTicks - libraryTicks;
this.printHeader('Shared libraries');
this.printEntries(flatViewNodes, null,
function(name) { return self.isSharedLibrary(name); });
this.printHeader('JavaScript');
this.printEntries(flatViewNodes, nonLibraryTicks,
function(name) { return self.isJsCode(name); });
this.printHeader('C++');
this.printEntries(flatViewNodes, nonLibraryTicks,
function(name) { return self.isCppCode(name); });
this.printHeader('GC');
this.printCounter(this.ticks_.gc, totalTicks);
this.printHeavyProfHeader();
var heavyProfile = this.profile_.getBottomUpProfile();
var heavyView = this.viewBuilder_.buildView(heavyProfile);
// To show the same percentages as in the flat profile.
heavyView.head.totalTime = totalTicks;
// Sort by total time, desc, then by name, desc.
heavyView.sort(function(rec1, rec2) {
return rec2.totalTime - rec1.totalTime ||
(rec2.internalFuncName < rec1.internalFuncName ? -1 : 1); });
this.printHeavyProfile(heavyView.head.children);
};
function padLeft(s, len) {
s = s.toString();
if (s.length < len) {
var padLength = len - s.length;
if (!(padLength in padLeft)) {
padLeft[padLength] = new Array(padLength + 1).join(' ');
}
s = padLeft[padLength] + s;
}
return s;
};
TickProcessor.prototype.printHeader = function(headerTitle) {
print('\n [' + headerTitle + ']:');
print(' ticks total nonlib name');
};
TickProcessor.prototype.printHeavyProfHeader = function() {
print('\n [Bottom up (heavy) profile]:');
print(' Note: percentage shows a share of a particular caller in the ' +
'total\n' +
' amount of its parent calls.');
print(' Callers occupying less than ' +
TickProcessor.CALL_PROFILE_CUTOFF_PCT.toFixed(1) +
'% are not shown.\n');
print(' ticks parent name');
};
TickProcessor.prototype.printCounter = function(ticksCount, totalTicksCount) {
var pct = ticksCount * 100.0 / totalTicksCount;
print(' ' + padLeft(ticksCount, 5) + ' ' + padLeft(pct.toFixed(1), 5) + '%');
};
TickProcessor.prototype.processProfile = function(
profile, filterP, func) {
for (var i = 0, n = profile.length; i < n; ++i) {
var rec = profile[i];
if (!filterP(rec.internalFuncName)) {
continue;
}
func(rec);
}
};
TickProcessor.prototype.printEntries = function(
profile, nonLibTicks, filterP) {
this.processProfile(profile, filterP, function (rec) {
if (rec.selfTime == 0) return;
var nonLibPct = nonLibTicks != null ?
rec.selfTime * 100.0 / nonLibTicks : 0.0;
print(' ' + padLeft(rec.selfTime, 5) + ' ' +
padLeft(rec.selfPercent.toFixed(1), 5) + '% ' +
padLeft(nonLibPct.toFixed(1), 5) + '% ' +
rec.internalFuncName);
});
};
TickProcessor.prototype.printHeavyProfile = function(profile, opt_indent) {
var self = this;
var indent = opt_indent || 0;
var indentStr = padLeft('', indent);
this.processProfile(profile, function() { return true; }, function (rec) {
// Cut off too infrequent callers.
if (rec.parentTotalPercent < TickProcessor.CALL_PROFILE_CUTOFF_PCT) return;
print(' ' + padLeft(rec.totalTime, 5) + ' ' +
padLeft(rec.parentTotalPercent.toFixed(1), 5) + '% ' +
indentStr + rec.internalFuncName);
// Limit backtrace depth.
if (indent < 10) {
self.printHeavyProfile(rec.children, indent + 2);
}
// Delimit top-level functions.
if (indent == 0) {
print('');
}
});
};
function CppEntriesProvider() {
};
CppEntriesProvider.prototype.parseVmSymbols = function(
libName, libStart, libEnd, processorFunc) {
this.loadSymbols(libName);
var prevEntry;
function addEntry(funcInfo) {
// Several functions can be mapped onto the same address. To avoid
// creating zero-sized entries, skip such duplicates.
// Also double-check that function belongs to the library address space.
if (prevEntry && !prevEntry.end &&
prevEntry.start < funcInfo.start &&
prevEntry.start >= libStart && funcInfo.start <= libEnd) {
processorFunc(prevEntry.name, prevEntry.start, funcInfo.start);
}
if (funcInfo.end &&
(!prevEntry || prevEntry.start != funcInfo.start) &&
funcInfo.start >= libStart && funcInfo.end <= libEnd) {
processorFunc(funcInfo.name, funcInfo.start, funcInfo.end);
}
prevEntry = funcInfo;
}
while (true) {
var funcInfo = this.parseNextLine();
if (funcInfo === null) {
continue;
} else if (funcInfo === false) {
break;
}
if (funcInfo.start < libStart && funcInfo.start < libEnd - libStart) {
funcInfo.start += libStart;
}
if (funcInfo.size) {
funcInfo.end = funcInfo.start + funcInfo.size;
}
addEntry(funcInfo);
}
addEntry({name: '', start: libEnd});
};
CppEntriesProvider.prototype.loadSymbols = function(libName) {
};
CppEntriesProvider.prototype.parseNextLine = function() {
return false;
};
function UnixCppEntriesProvider(nmExec) {
this.symbols = [];
this.parsePos = 0;
this.nmExec = nmExec;
this.FUNC_RE = /^([0-9a-fA-F]{8,16}) ([0-9a-fA-F]{8,16} )?[tTwW] (.*)$/;
};
inherits(UnixCppEntriesProvider, CppEntriesProvider);
UnixCppEntriesProvider.prototype.loadSymbols = function(libName) {
this.parsePos = 0;
try {
this.symbols = [
os.system(this.nmExec, ['-C', '-n', '-S', libName], -1, -1),
os.system(this.nmExec, ['-C', '-n', '-S', '-D', libName], -1, -1)
];
} catch (e) {
// If the library cannot be found on this system let's not panic.
this.symbols = ['', ''];
}
};
UnixCppEntriesProvider.prototype.parseNextLine = function() {
if (this.symbols.length == 0) {
return false;
}
var lineEndPos = this.symbols[0].indexOf('\n', this.parsePos);
if (lineEndPos == -1) {
this.symbols.shift();
this.parsePos = 0;
return this.parseNextLine();
}
var line = this.symbols[0].substring(this.parsePos, lineEndPos);
this.parsePos = lineEndPos + 1;
var fields = line.match(this.FUNC_RE);
var funcInfo = null;
if (fields) {
funcInfo = { name: fields[3], start: parseInt(fields[1], 16) };
if (fields[2]) {
funcInfo.size = parseInt(fields[2], 16);
}
}
return funcInfo;
};
function MacCppEntriesProvider(nmExec) {
UnixCppEntriesProvider.call(this, nmExec);
// Note an empty group. It is required, as UnixCppEntriesProvider expects 3 groups.
this.FUNC_RE = /^([0-9a-fA-F]{8,16}) ()[iItT] (.*)$/;
};
inherits(MacCppEntriesProvider, UnixCppEntriesProvider);
MacCppEntriesProvider.prototype.loadSymbols = function(libName) {
this.parsePos = 0;
try {
this.symbols = [os.system(this.nmExec, ['-n', '-f', libName], -1, -1), ''];
} catch (e) {
// If the library cannot be found on this system let's not panic.
this.symbols = '';
}
};
function WindowsCppEntriesProvider() {
this.symbols = '';
this.parsePos = 0;
};
inherits(WindowsCppEntriesProvider, CppEntriesProvider);
WindowsCppEntriesProvider.FILENAME_RE = /^(.*)\.([^.]+)$/;
WindowsCppEntriesProvider.FUNC_RE =
/^\s+0001:[0-9a-fA-F]{8}\s+([_\?@$0-9a-zA-Z]+)\s+([0-9a-fA-F]{8}).*$/;
WindowsCppEntriesProvider.IMAGE_BASE_RE =
/^\s+0000:00000000\s+___ImageBase\s+([0-9a-fA-F]{8}).*$/;
// This is almost a constant on Windows.
WindowsCppEntriesProvider.EXE_IMAGE_BASE = 0x00400000;
WindowsCppEntriesProvider.prototype.loadSymbols = function(libName) {
var fileNameFields = libName.match(WindowsCppEntriesProvider.FILENAME_RE);
if (!fileNameFields) return;
var mapFileName = fileNameFields[1] + '.map';
this.moduleType_ = fileNameFields[2].toLowerCase();
try {
this.symbols = read(mapFileName);
} catch (e) {
// If .map file cannot be found let's not panic.
this.symbols = '';
}
};
WindowsCppEntriesProvider.prototype.parseNextLine = function() {
var lineEndPos = this.symbols.indexOf('\r\n', this.parsePos);
if (lineEndPos == -1) {
return false;
}
var line = this.symbols.substring(this.parsePos, lineEndPos);
this.parsePos = lineEndPos + 2;
// Image base entry is above all other symbols, so we can just
// terminate parsing.
var imageBaseFields = line.match(WindowsCppEntriesProvider.IMAGE_BASE_RE);
if (imageBaseFields) {
var imageBase = parseInt(imageBaseFields[1], 16);
if ((this.moduleType_ == 'exe') !=
(imageBase == WindowsCppEntriesProvider.EXE_IMAGE_BASE)) {
return false;
}
}
var fields = line.match(WindowsCppEntriesProvider.FUNC_RE);
return fields ?
{ name: this.unmangleName(fields[1]), start: parseInt(fields[2], 16) } :
null;
};
/**
* Performs very simple unmangling of C++ names.
*
* Does not handle arguments and template arguments. The mangled names have
* the form:
*
* ?LookupInDescriptor@JSObject@internal@v8@@...arguments info...
*/
WindowsCppEntriesProvider.prototype.unmangleName = function(name) {
// Empty or non-mangled name.
if (name.length < 1 || name.charAt(0) != '?') return name;
var nameEndPos = name.indexOf('@@');
var components = name.substring(1, nameEndPos).split('@');
components.reverse();
return components.join('::');
};
function ArgumentsProcessor(args) {
this.args_ = args;
this.result_ = ArgumentsProcessor.DEFAULTS;
this.argsDispatch_ = {
'-j': ['stateFilter', TickProcessor.VmStates.JS,
'Show only ticks from JS VM state'],
'-g': ['stateFilter', TickProcessor.VmStates.GC,
'Show only ticks from GC VM state'],
'-c': ['stateFilter', TickProcessor.VmStates.COMPILER,
'Show only ticks from COMPILER VM state'],
'-o': ['stateFilter', TickProcessor.VmStates.OTHER,
'Show only ticks from OTHER VM state'],
'-e': ['stateFilter', TickProcessor.VmStates.EXTERNAL,
'Show only ticks from EXTERNAL VM state'],
'--ignore-unknown': ['ignoreUnknown', true,
'Exclude ticks of unknown code entries from processing'],
'--separate-ic': ['separateIc', true,
'Separate IC entries'],
'--unix': ['platform', 'unix',
'Specify that we are running on *nix platform'],
'--windows': ['platform', 'windows',
'Specify that we are running on Windows platform'],
'--mac': ['platform', 'mac',
'Specify that we are running on Mac OS X platform'],
'--nm': ['nm', 'nm',
'Specify the \'nm\' executable to use (e.g. --nm=/my_dir/nm)'],
'--snapshot-log': ['snapshotLogFileName', 'snapshot.log',
'Specify snapshot log file to use (e.g. --snapshot-log=snapshot.log)']
};
this.argsDispatch_['--js'] = this.argsDispatch_['-j'];
this.argsDispatch_['--gc'] = this.argsDispatch_['-g'];
this.argsDispatch_['--compiler'] = this.argsDispatch_['-c'];
this.argsDispatch_['--other'] = this.argsDispatch_['-o'];
this.argsDispatch_['--external'] = this.argsDispatch_['-e'];
};
ArgumentsProcessor.DEFAULTS = {
logFileName: 'v8.log',
snapshotLogFileName: null,
platform: 'unix',
stateFilter: null,
ignoreUnknown: false,
separateIc: false,
nm: 'nm'
};
ArgumentsProcessor.prototype.parse = function() {
while (this.args_.length) {
var arg = this.args_[0];
if (arg.charAt(0) != '-') {
break;
}
this.args_.shift();
var userValue = null;
var eqPos = arg.indexOf('=');
if (eqPos != -1) {
userValue = arg.substr(eqPos + 1);
arg = arg.substr(0, eqPos);
}
if (arg in this.argsDispatch_) {
var dispatch = this.argsDispatch_[arg];
this.result_[dispatch[0]] = userValue == null ? dispatch[1] : userValue;
} else {
return false;
}
}
if (this.args_.length >= 1) {
this.result_.logFileName = this.args_.shift();
}
return true;
};
ArgumentsProcessor.prototype.result = function() {
return this.result_;
};
ArgumentsProcessor.prototype.printUsageAndExit = function() {
function padRight(s, len) {
s = s.toString();
if (s.length < len) {
s = s + (new Array(len - s.length + 1).join(' '));
}
return s;
}
print('Cmdline args: [options] [log-file-name]\n' +
'Default log file name is "' +
ArgumentsProcessor.DEFAULTS.logFileName + '".\n');
print('Options:');
for (var arg in this.argsDispatch_) {
var synonims = [arg];
var dispatch = this.argsDispatch_[arg];
for (var synArg in this.argsDispatch_) {
if (arg !== synArg && dispatch === this.argsDispatch_[synArg]) {
synonims.push(synArg);
delete this.argsDispatch_[synArg];
}
}
print(' ' + padRight(synonims.join(', '), 20) + dispatch[2]);
}
quit(2);
};