Don't keep data about JS code that is never executed.
This reduces memory usage of tickprocessor. Thanks to William Hesse for pointing out this issue. Also speed up static symbols loading. Review URL: http://codereview.chromium.org/113101 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@1902 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
mikhail.naganov@gmail.com
parent
ebdf1d1e5b
commit
7d260e5f8c
@ -123,4 +123,36 @@ function assertNoEntry(codeMap, addr) {
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codeMap.addCode(0x1700, newCodeEntry(0x100, 'code'));
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assertEntry(codeMap, 'code', 0x1500);
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assertEntry(codeMap, 'code {1}', 0x1700);
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// Test name stability.
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assertEntry(codeMap, 'code', 0x1500);
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assertEntry(codeMap, 'code {1}', 0x1700);
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})();
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(function testStaticEntriesExport() {
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var codeMap = new devtools.profiler.CodeMap();
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codeMap.addStaticCode(0x1500, newCodeEntry(0x3000, 'lib1'));
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codeMap.addStaticCode(0x15500, newCodeEntry(0x5000, 'lib2'));
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codeMap.addStaticCode(0x155500, newCodeEntry(0x10000, 'lib3'));
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var allStatics = codeMap.getAllStaticEntries();
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allStatics.sort();
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assertEquals(['lib1: 3000', 'lib2: 5000', 'lib3: 10000'], allStatics);
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})();
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(function testDynamicEntriesExport() {
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var codeMap = new devtools.profiler.CodeMap();
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codeMap.addCode(0x1500, newCodeEntry(0x200, 'code1'));
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codeMap.addCode(0x1700, newCodeEntry(0x100, 'code2'));
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codeMap.addCode(0x1900, newCodeEntry(0x50, 'code3'));
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var allDynamics = codeMap.getAllDynamicEntries();
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allDynamics.sort();
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assertEquals(['code1: 200', 'code2: 100', 'code3: 50'], allDynamics);
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codeMap.deleteCode(0x1700);
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var allDynamics2 = codeMap.getAllDynamicEntries();
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allDynamics2.sort();
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assertEquals(['code1: 200', 'code3: 50'], allDynamics2);
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codeMap.deleteCode(0x1500);
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var allDynamics3 = codeMap.getAllDynamicEntries();
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assertEquals(['code3: 50'], allDynamics3);
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})();
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@ -43,10 +43,8 @@ devtools.profiler.CodeMap = function() {
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this.dynamics_ = new goog.structs.SplayTree();
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/**
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* Deleted code entries. Used for code collected by the GC.
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* Name generator for entries having duplicate names.
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*/
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this.deleted_ = [];
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this.dynamicsNameGen_ = new devtools.profiler.CodeMap.NameGenerator();
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/**
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@ -81,8 +79,6 @@ devtools.profiler.CodeMap.PAGE_SIZE =
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* @param {devtools.profiler.CodeMap.CodeEntry} codeEntry Code entry object.
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*/
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devtools.profiler.CodeMap.prototype.addCode = function(start, codeEntry) {
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var entryName = this.dynamicsNameGen_.getName(codeEntry.name);
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codeEntry.name = entryName;
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this.dynamics_.insert(start, codeEntry);
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};
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@ -102,14 +98,12 @@ devtools.profiler.CodeMap.prototype.moveCode = function(from, to) {
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/**
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* Discards a dynamic code entry. Throws an exception if there is no dynamic
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* code entry with the specified starting address. The entry will still be
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* returned from the 'getAllDynamicEntries' method.
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* code entry with the specified starting address.
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*
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* @param {number} start The starting address of the entry being deleted.
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*/
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devtools.profiler.CodeMap.prototype.deleteCode = function(start) {
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var removedNode = this.dynamics_.remove(start);
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this.deleted_.push(removedNode.value);
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};
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@ -168,7 +162,14 @@ devtools.profiler.CodeMap.prototype.findEntry = function(addr) {
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var min = this.dynamics_.findMin();
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var max = this.dynamics_.findMax();
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if (max != null && addr < (max.key + max.value.size) && addr >= min.key) {
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return this.findInTree_(this.dynamics_, addr);
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var dynaEntry = this.findInTree_(this.dynamics_, addr);
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if (dynaEntry == null) return null;
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// Dedupe entry name.
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if (!dynaEntry.nameUpdated_) {
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dynaEntry.name = this.dynamicsNameGen_.getName(dynaEntry.name);
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dynaEntry.nameUpdated_ = true;
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}
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return dynaEntry;
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}
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return null;
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};
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@ -178,8 +179,7 @@ devtools.profiler.CodeMap.prototype.findEntry = function(addr) {
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* Returns an array of all dynamic code entries, including deleted ones.
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*/
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devtools.profiler.CodeMap.prototype.getAllDynamicEntries = function() {
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var dynamicEntries = this.dynamics_.exportValues();
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return dynamicEntries.concat(this.deleted_);
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return this.dynamics_.exportValues();
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};
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@ -201,6 +201,7 @@ devtools.profiler.CodeMap.prototype.getAllStaticEntries = function() {
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devtools.profiler.CodeMap.CodeEntry = function(size, opt_name) {
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this.size = size;
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this.name = opt_name || '';
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this.nameUpdated_ = false;
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};
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@ -99,10 +99,11 @@ TickProcessor.VmStates = {
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TickProcessor.CodeTypes = {
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JS: 0,
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CPP: 1,
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SHARED_LIB: 2
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CPP: 0,
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SHARED_LIB: 1
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};
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// Otherwise, this is JS-related code. We are not adding it to
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// codeTypes_ map because there can be zillions of them.
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TickProcessor.RecordsDispatch = {
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@ -142,7 +143,7 @@ TickProcessor.prototype.isCppCode = function(name) {
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TickProcessor.prototype.isJsCode = function(name) {
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return this.codeTypes_[name] == TickProcessor.CodeTypes.JS;
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return !(name in this.codeTypes_);
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};
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@ -220,7 +221,6 @@ TickProcessor.prototype.processSharedLibrary = function(
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TickProcessor.prototype.processCodeCreation = function(
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type, start, size, name) {
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var entry = this.profile_.addCode(type, name, start, size);
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this.setCodeType(entry.getName(), 'JS');
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};
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@ -415,8 +415,7 @@ function CppEntriesProvider() {
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CppEntriesProvider.prototype.parseVmSymbols = function(
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libName, libStart, libEnd, processorFunc) {
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var syms = this.loadSymbols(libName);
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if (syms.length == 0) return;
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this.loadSymbols(libName);
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var prevEntry;
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@ -428,11 +427,12 @@ CppEntriesProvider.prototype.parseVmSymbols = function(
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}
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}
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for (var i = 0, n = syms.length; i < n; ++i) {
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var line = syms[i];
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var funcInfo = this.parseLine(line);
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if (!funcInfo) {
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while (true) {
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var funcInfo = this.parseNextLine();
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if (funcInfo === null) {
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continue;
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} else if (funcInfo === false) {
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break;
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}
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if (funcInfo.start < libStart && funcInfo.start < libEnd - libStart) {
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funcInfo.start += libStart;
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@ -445,12 +445,11 @@ CppEntriesProvider.prototype.parseVmSymbols = function(
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CppEntriesProvider.prototype.loadSymbols = function(libName) {
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return [];
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};
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CppEntriesProvider.prototype.parseLine = function(line) {
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return { name: '', start: 0 };
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CppEntriesProvider.prototype.parseNextLine = function() {
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return false;
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};
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@ -462,6 +461,8 @@ function inherits(childCtor, parentCtor) {
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function UnixCppEntriesProvider() {
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this.symbols = [];
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this.parsePos = 0;
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};
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inherits(UnixCppEntriesProvider, CppEntriesProvider);
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@ -470,20 +471,35 @@ UnixCppEntriesProvider.FUNC_RE = /^([0-9a-fA-F]{8}) . (.*)$/;
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UnixCppEntriesProvider.prototype.loadSymbols = function(libName) {
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var normalSyms = os.system('nm', ['-C', '-n', libName], -1, -1);
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var dynaSyms = os.system('nm', ['-C', '-n', '-D', libName], -1, -1);
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var syms = (normalSyms + dynaSyms).split('\n');
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return syms;
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this.symbols = [
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os.system('nm', ['-C', '-n', libName], -1, -1),
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os.system('nm', ['-C', '-n', '-D', libName], -1, -1)
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];
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this.parsePos = 0;
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};
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UnixCppEntriesProvider.prototype.parseLine = function(line) {
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UnixCppEntriesProvider.prototype.parseNextLine = function() {
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if (this.symbols.length == 0) {
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return false;
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}
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var lineEndPos = this.symbols[0].indexOf('\n', this.parsePos);
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if (lineEndPos == -1) {
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this.symbols.shift();
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this.parsePos = 0;
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return this.parseNextLine();
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}
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var line = this.symbols[0].substring(this.parsePos, lineEndPos);
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this.parsePos = lineEndPos + 1;
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var fields = line.match(UnixCppEntriesProvider.FUNC_RE);
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return fields ? { name: fields[2], start: parseInt(fields[1], 16) } : null;
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};
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function WindowsCppEntriesProvider() {
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this.symbols = '';
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this.parsePos = 0;
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};
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inherits(WindowsCppEntriesProvider, CppEntriesProvider);
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@ -498,13 +514,20 @@ WindowsCppEntriesProvider.FUNC_RE =
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WindowsCppEntriesProvider.prototype.loadSymbols = function(libName) {
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var fileNameFields = libName.match(WindowsCppEntriesProvider.FILENAME_RE);
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// Only try to load symbols for the .exe file.
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if (!fileNameFields) return [];
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if (!fileNameFields) return;
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var mapFileName = fileNameFields[1] + '.map';
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return readFile(mapFileName).split('\r\n');
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this.symbols = readFile(mapFileName);
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};
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WindowsCppEntriesProvider.prototype.parseLine = function(line) {
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WindowsCppEntriesProvider.prototype.parseNextLine = function() {
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var lineEndPos = this.symbols.indexOf('\r\n', this.parsePos);
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if (lineEndPos == -1) {
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return false;
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}
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var line = this.symbols.substring(this.parsePos, lineEndPos);
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this.parsePos = lineEndPos + 2;
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var fields = line.match(WindowsCppEntriesProvider.FUNC_RE);
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return fields ?
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{ name: this.unmangleName(fields[1]), start: parseInt(fields[2], 16) } :
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