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Diffstat (limited to 'src/3rdparty/v8/tools/profile.js')
-rw-r--r-- | src/3rdparty/v8/tools/profile.js | 795 |
1 files changed, 0 insertions, 795 deletions
diff --git a/src/3rdparty/v8/tools/profile.js b/src/3rdparty/v8/tools/profile.js deleted file mode 100644 index 10a07f8..0000000 --- a/src/3rdparty/v8/tools/profile.js +++ /dev/null @@ -1,795 +0,0 @@ -// 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. - - -/** - * Creates a profile object for processing profiling-related events - * and calculating function execution times. - * - * @constructor - */ -function Profile() { - this.codeMap_ = new CodeMap(); - this.topDownTree_ = new CallTree(); - this.bottomUpTree_ = new CallTree(); -}; - - -/** - * Returns whether a function with the specified name must be skipped. - * Should be overriden by subclasses. - * - * @param {string} name Function name. - */ -Profile.prototype.skipThisFunction = function(name) { - return false; -}; - - -/** - * Enum for profiler operations that involve looking up existing - * code entries. - * - * @enum {number} - */ -Profile.Operation = { - MOVE: 0, - DELETE: 1, - TICK: 2 -}; - - -/** - * Enum for code state regarding its dynamic optimization. - * - * @enum {number} - */ -Profile.CodeState = { - COMPILED: 0, - OPTIMIZABLE: 1, - OPTIMIZED: 2 -}; - - -/** - * Called whenever the specified operation has failed finding a function - * containing the specified address. Should be overriden by subclasses. - * See the Profile.Operation enum for the list of - * possible operations. - * - * @param {number} operation Operation. - * @param {number} addr Address of the unknown code. - * @param {number} opt_stackPos If an unknown address is encountered - * during stack strace processing, specifies a position of the frame - * containing the address. - */ -Profile.prototype.handleUnknownCode = function( - operation, addr, opt_stackPos) { -}; - - -/** - * Registers a library. - * - * @param {string} name Code entry name. - * @param {number} startAddr Starting address. - * @param {number} endAddr Ending address. - */ -Profile.prototype.addLibrary = function( - name, startAddr, endAddr) { - var entry = new CodeMap.CodeEntry( - endAddr - startAddr, name); - this.codeMap_.addLibrary(startAddr, entry); - return entry; -}; - - -/** - * Registers statically compiled code entry. - * - * @param {string} name Code entry name. - * @param {number} startAddr Starting address. - * @param {number} endAddr Ending address. - */ -Profile.prototype.addStaticCode = function( - name, startAddr, endAddr) { - var entry = new CodeMap.CodeEntry( - endAddr - startAddr, name); - this.codeMap_.addStaticCode(startAddr, entry); - return entry; -}; - - -/** - * Registers dynamic (JIT-compiled) code entry. - * - * @param {string} type Code entry type. - * @param {string} name Code entry name. - * @param {number} start Starting address. - * @param {number} size Code entry size. - */ -Profile.prototype.addCode = function( - type, name, start, size) { - var entry = new Profile.DynamicCodeEntry(size, type, name); - this.codeMap_.addCode(start, entry); - return entry; -}; - - -/** - * Registers dynamic (JIT-compiled) code entry. - * - * @param {string} type Code entry type. - * @param {string} name Code entry name. - * @param {number} start Starting address. - * @param {number} size Code entry size. - * @param {number} funcAddr Shared function object address. - * @param {Profile.CodeState} state Optimization state. - */ -Profile.prototype.addFuncCode = function( - type, name, start, size, funcAddr, state) { - // As code and functions are in the same address space, - // it is safe to put them in a single code map. - var func = this.codeMap_.findDynamicEntryByStartAddress(funcAddr); - if (!func) { - func = new Profile.FunctionEntry(name); - this.codeMap_.addCode(funcAddr, func); - } else if (func.name !== name) { - // Function object has been overwritten with a new one. - func.name = name; - } - var entry = this.codeMap_.findDynamicEntryByStartAddress(start); - if (entry) { - if (entry.size === size && entry.func === func) { - // Entry state has changed. - entry.state = state; - } - } else { - entry = new Profile.DynamicFuncCodeEntry(size, type, func, state); - this.codeMap_.addCode(start, entry); - } - return entry; -}; - - -/** - * Reports about moving of a dynamic code entry. - * - * @param {number} from Current code entry address. - * @param {number} to New code entry address. - */ -Profile.prototype.moveCode = function(from, to) { - try { - this.codeMap_.moveCode(from, to); - } catch (e) { - this.handleUnknownCode(Profile.Operation.MOVE, from); - } -}; - - -/** - * Reports about deletion of a dynamic code entry. - * - * @param {number} start Starting address. - */ -Profile.prototype.deleteCode = function(start) { - try { - this.codeMap_.deleteCode(start); - } catch (e) { - this.handleUnknownCode(Profile.Operation.DELETE, start); - } -}; - - -/** - * Reports about moving of a dynamic code entry. - * - * @param {number} from Current code entry address. - * @param {number} to New code entry address. - */ -Profile.prototype.moveFunc = function(from, to) { - if (this.codeMap_.findDynamicEntryByStartAddress(from)) { - this.codeMap_.moveCode(from, to); - } -}; - - -/** - * Retrieves a code entry by an address. - * - * @param {number} addr Entry address. - */ -Profile.prototype.findEntry = function(addr) { - return this.codeMap_.findEntry(addr); -}; - - -/** - * Records a tick event. Stack must contain a sequence of - * addresses starting with the program counter value. - * - * @param {Array<number>} stack Stack sample. - */ -Profile.prototype.recordTick = function(stack) { - var processedStack = this.resolveAndFilterFuncs_(stack); - this.bottomUpTree_.addPath(processedStack); - processedStack.reverse(); - this.topDownTree_.addPath(processedStack); -}; - - -/** - * Translates addresses into function names and filters unneeded - * functions. - * - * @param {Array<number>} stack Stack sample. - */ -Profile.prototype.resolveAndFilterFuncs_ = function(stack) { - var result = []; - for (var i = 0; i < stack.length; ++i) { - var entry = this.codeMap_.findEntry(stack[i]); - if (entry) { - var name = entry.getName(); - if (!this.skipThisFunction(name)) { - result.push(name); - } - } else { - this.handleUnknownCode( - Profile.Operation.TICK, stack[i], i); - } - } - return result; -}; - - -/** - * Performs a BF traversal of the top down call graph. - * - * @param {function(CallTree.Node)} f Visitor function. - */ -Profile.prototype.traverseTopDownTree = function(f) { - this.topDownTree_.traverse(f); -}; - - -/** - * Performs a BF traversal of the bottom up call graph. - * - * @param {function(CallTree.Node)} f Visitor function. - */ -Profile.prototype.traverseBottomUpTree = function(f) { - this.bottomUpTree_.traverse(f); -}; - - -/** - * Calculates a top down profile for a node with the specified label. - * If no name specified, returns the whole top down calls tree. - * - * @param {string} opt_label Node label. - */ -Profile.prototype.getTopDownProfile = function(opt_label) { - return this.getTreeProfile_(this.topDownTree_, opt_label); -}; - - -/** - * Calculates a bottom up profile for a node with the specified label. - * If no name specified, returns the whole bottom up calls tree. - * - * @param {string} opt_label Node label. - */ -Profile.prototype.getBottomUpProfile = function(opt_label) { - return this.getTreeProfile_(this.bottomUpTree_, opt_label); -}; - - -/** - * Helper function for calculating a tree profile. - * - * @param {Profile.CallTree} tree Call tree. - * @param {string} opt_label Node label. - */ -Profile.prototype.getTreeProfile_ = function(tree, opt_label) { - if (!opt_label) { - tree.computeTotalWeights(); - return tree; - } else { - var subTree = tree.cloneSubtree(opt_label); - subTree.computeTotalWeights(); - return subTree; - } -}; - - -/** - * Calculates a flat profile of callees starting from a node with - * the specified label. If no name specified, starts from the root. - * - * @param {string} opt_label Starting node label. - */ -Profile.prototype.getFlatProfile = function(opt_label) { - var counters = new CallTree(); - var rootLabel = opt_label || CallTree.ROOT_NODE_LABEL; - var precs = {}; - precs[rootLabel] = 0; - var root = counters.findOrAddChild(rootLabel); - - this.topDownTree_.computeTotalWeights(); - this.topDownTree_.traverseInDepth( - function onEnter(node) { - if (!(node.label in precs)) { - precs[node.label] = 0; - } - var nodeLabelIsRootLabel = node.label == rootLabel; - if (nodeLabelIsRootLabel || precs[rootLabel] > 0) { - if (precs[rootLabel] == 0) { - root.selfWeight += node.selfWeight; - root.totalWeight += node.totalWeight; - } else { - var rec = root.findOrAddChild(node.label); - rec.selfWeight += node.selfWeight; - if (nodeLabelIsRootLabel || precs[node.label] == 0) { - rec.totalWeight += node.totalWeight; - } - } - precs[node.label]++; - } - }, - function onExit(node) { - if (node.label == rootLabel || precs[rootLabel] > 0) { - precs[node.label]--; - } - }, - null); - - if (!opt_label) { - // If we have created a flat profile for the whole program, we don't - // need an explicit root in it. Thus, replace the counters tree - // root with the node corresponding to the whole program. - counters.root_ = root; - } else { - // Propagate weights so percents can be calculated correctly. - counters.getRoot().selfWeight = root.selfWeight; - counters.getRoot().totalWeight = root.totalWeight; - } - return counters; -}; - - -/** - * Cleans up function entries that are not referenced by code entries. - */ -Profile.prototype.cleanUpFuncEntries = function() { - var referencedFuncEntries = []; - var entries = this.codeMap_.getAllDynamicEntriesWithAddresses(); - for (var i = 0, l = entries.length; i < l; ++i) { - if (entries[i][1].constructor === Profile.FunctionEntry) { - entries[i][1].used = false; - } - } - for (var i = 0, l = entries.length; i < l; ++i) { - if ("func" in entries[i][1]) { - entries[i][1].func.used = true; - } - } - for (var i = 0, l = entries.length; i < l; ++i) { - if (entries[i][1].constructor === Profile.FunctionEntry && - !entries[i][1].used) { - this.codeMap_.deleteCode(entries[i][0]); - } - } -}; - - -/** - * Creates a dynamic code entry. - * - * @param {number} size Code size. - * @param {string} type Code type. - * @param {string} name Function name. - * @constructor - */ -Profile.DynamicCodeEntry = function(size, type, name) { - CodeMap.CodeEntry.call(this, size, name); - this.type = type; -}; - - -/** - * Returns node name. - */ -Profile.DynamicCodeEntry.prototype.getName = function() { - return this.type + ': ' + this.name; -}; - - -/** - * Returns raw node name (without type decoration). - */ -Profile.DynamicCodeEntry.prototype.getRawName = function() { - return this.name; -}; - - -Profile.DynamicCodeEntry.prototype.isJSFunction = function() { - return false; -}; - - -Profile.DynamicCodeEntry.prototype.toString = function() { - return this.getName() + ': ' + this.size.toString(16); -}; - - -/** - * Creates a dynamic code entry. - * - * @param {number} size Code size. - * @param {string} type Code type. - * @param {Profile.FunctionEntry} func Shared function entry. - * @param {Profile.CodeState} state Code optimization state. - * @constructor - */ -Profile.DynamicFuncCodeEntry = function(size, type, func, state) { - CodeMap.CodeEntry.call(this, size); - this.type = type; - this.func = func; - this.state = state; -}; - -Profile.DynamicFuncCodeEntry.STATE_PREFIX = ["", "~", "*"]; - -/** - * Returns node name. - */ -Profile.DynamicFuncCodeEntry.prototype.getName = function() { - var name = this.func.getName(); - return this.type + ': ' + Profile.DynamicFuncCodeEntry.STATE_PREFIX[this.state] + name; -}; - - -/** - * Returns raw node name (without type decoration). - */ -Profile.DynamicFuncCodeEntry.prototype.getRawName = function() { - return this.func.getName(); -}; - - -Profile.DynamicFuncCodeEntry.prototype.isJSFunction = function() { - return true; -}; - - -Profile.DynamicFuncCodeEntry.prototype.toString = function() { - return this.getName() + ': ' + this.size.toString(16); -}; - - -/** - * Creates a shared function object entry. - * - * @param {string} name Function name. - * @constructor - */ -Profile.FunctionEntry = function(name) { - CodeMap.CodeEntry.call(this, 0, name); -}; - - -/** - * Returns node name. - */ -Profile.FunctionEntry.prototype.getName = function() { - var name = this.name; - if (name.length == 0) { - name = '<anonymous>'; - } else if (name.charAt(0) == ' ') { - // An anonymous function with location: " aaa.js:10". - name = '<anonymous>' + name; - } - return name; -}; - -Profile.FunctionEntry.prototype.toString = CodeMap.CodeEntry.prototype.toString; - -/** - * Constructs a call graph. - * - * @constructor - */ -function CallTree() { - this.root_ = new CallTree.Node( - CallTree.ROOT_NODE_LABEL); -}; - - -/** - * The label of the root node. - */ -CallTree.ROOT_NODE_LABEL = ''; - - -/** - * @private - */ -CallTree.prototype.totalsComputed_ = false; - - -/** - * Returns the tree root. - */ -CallTree.prototype.getRoot = function() { - return this.root_; -}; - - -/** - * Adds the specified call path, constructing nodes as necessary. - * - * @param {Array<string>} path Call path. - */ -CallTree.prototype.addPath = function(path) { - if (path.length == 0) { - return; - } - var curr = this.root_; - for (var i = 0; i < path.length; ++i) { - curr = curr.findOrAddChild(path[i]); - } - curr.selfWeight++; - this.totalsComputed_ = false; -}; - - -/** - * Finds an immediate child of the specified parent with the specified - * label, creates a child node if necessary. If a parent node isn't - * specified, uses tree root. - * - * @param {string} label Child node label. - */ -CallTree.prototype.findOrAddChild = function(label) { - return this.root_.findOrAddChild(label); -}; - - -/** - * Creates a subtree by cloning and merging all subtrees rooted at nodes - * with a given label. E.g. cloning the following call tree on label 'A' - * will give the following result: - * - * <A>--<B> <B> - * / / - * <root> == clone on 'A' ==> <root>--<A> - * \ \ - * <C>--<A>--<D> <D> - * - * And <A>'s selfWeight will be the sum of selfWeights of <A>'s from the - * source call tree. - * - * @param {string} label The label of the new root node. - */ -CallTree.prototype.cloneSubtree = function(label) { - var subTree = new CallTree(); - this.traverse(function(node, parent) { - if (!parent && node.label != label) { - return null; - } - var child = (parent ? parent : subTree).findOrAddChild(node.label); - child.selfWeight += node.selfWeight; - return child; - }); - return subTree; -}; - - -/** - * Computes total weights in the call graph. - */ -CallTree.prototype.computeTotalWeights = function() { - if (this.totalsComputed_) { - return; - } - this.root_.computeTotalWeight(); - this.totalsComputed_ = true; -}; - - -/** - * Traverses the call graph in preorder. This function can be used for - * building optionally modified tree clones. This is the boilerplate code - * for this scenario: - * - * callTree.traverse(function(node, parentClone) { - * var nodeClone = cloneNode(node); - * if (parentClone) - * parentClone.addChild(nodeClone); - * return nodeClone; - * }); - * - * @param {function(CallTree.Node, *)} f Visitor function. - * The second parameter is the result of calling 'f' on the parent node. - */ -CallTree.prototype.traverse = function(f) { - var pairsToProcess = new ConsArray(); - pairsToProcess.concat([{node: this.root_, param: null}]); - while (!pairsToProcess.atEnd()) { - var pair = pairsToProcess.next(); - var node = pair.node; - var newParam = f(node, pair.param); - var morePairsToProcess = []; - node.forEachChild(function (child) { - morePairsToProcess.push({node: child, param: newParam}); }); - pairsToProcess.concat(morePairsToProcess); - } -}; - - -/** - * Performs an indepth call graph traversal. - * - * @param {function(CallTree.Node)} enter A function called - * prior to visiting node's children. - * @param {function(CallTree.Node)} exit A function called - * after visiting node's children. - */ -CallTree.prototype.traverseInDepth = function(enter, exit) { - function traverse(node) { - enter(node); - node.forEachChild(traverse); - exit(node); - } - traverse(this.root_); -}; - - -/** - * Constructs a call graph node. - * - * @param {string} label Node label. - * @param {CallTree.Node} opt_parent Node parent. - */ -CallTree.Node = function(label, opt_parent) { - this.label = label; - this.parent = opt_parent; - this.children = {}; -}; - - -/** - * Node self weight (how many times this node was the last node in - * a call path). - * @type {number} - */ -CallTree.Node.prototype.selfWeight = 0; - - -/** - * Node total weight (includes weights of all children). - * @type {number} - */ -CallTree.Node.prototype.totalWeight = 0; - - -/** - * Adds a child node. - * - * @param {string} label Child node label. - */ -CallTree.Node.prototype.addChild = function(label) { - var child = new CallTree.Node(label, this); - this.children[label] = child; - return child; -}; - - -/** - * Computes node's total weight. - */ -CallTree.Node.prototype.computeTotalWeight = - function() { - var totalWeight = this.selfWeight; - this.forEachChild(function(child) { - totalWeight += child.computeTotalWeight(); }); - return this.totalWeight = totalWeight; -}; - - -/** - * Returns all node's children as an array. - */ -CallTree.Node.prototype.exportChildren = function() { - var result = []; - this.forEachChild(function (node) { result.push(node); }); - return result; -}; - - -/** - * Finds an immediate child with the specified label. - * - * @param {string} label Child node label. - */ -CallTree.Node.prototype.findChild = function(label) { - return this.children[label] || null; -}; - - -/** - * Finds an immediate child with the specified label, creates a child - * node if necessary. - * - * @param {string} label Child node label. - */ -CallTree.Node.prototype.findOrAddChild = function(label) { - return this.findChild(label) || this.addChild(label); -}; - - -/** - * Calls the specified function for every child. - * - * @param {function(CallTree.Node)} f Visitor function. - */ -CallTree.Node.prototype.forEachChild = function(f) { - for (var c in this.children) { - f(this.children[c]); - } -}; - - -/** - * Walks up from the current node up to the call tree root. - * - * @param {function(CallTree.Node)} f Visitor function. - */ -CallTree.Node.prototype.walkUpToRoot = function(f) { - for (var curr = this; curr != null; curr = curr.parent) { - f(curr); - } -}; - - -/** - * Tries to find a node with the specified path. - * - * @param {Array<string>} labels The path. - * @param {function(CallTree.Node)} opt_f Visitor function. - */ -CallTree.Node.prototype.descendToChild = function( - labels, opt_f) { - for (var pos = 0, curr = this; pos < labels.length && curr != null; pos++) { - var child = curr.findChild(labels[pos]); - if (opt_f) { - opt_f(child, pos); - } - curr = child; - } - return curr; -}; |