v8/test/mjsunit/tools/profile.js

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// 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.
// Load source code files from <project root>/tools.
// Files: tools/splaytree.js tools/codemap.js tools/consarray.js tools/profile.js
function stackToString(stack) {
return stack.join(' -> ');
};
function assertPathExists(root, path, opt_message) {
var message = opt_message ? ' (' + opt_message + ')' : '';
assertNotNull(root.descendToChild(path, function(node, pos) {
assertNotNull(node,
stackToString(path.slice(0, pos)) + ' has no child ' +
path[pos] + message);
}), opt_message);
};
function assertNoPathExists(root, path, opt_message) {
var message = opt_message ? ' (' + opt_message + ')' : '';
assertNull(root.descendToChild(path), opt_message);
};
function countNodes(profile, traverseFunc) {
var count = 0;
traverseFunc.call(profile, function () { count++; });
return count;
};
function ProfileTestDriver() {
this.profile = new Profile();
this.stack_ = [];
this.addFunctions_();
};
// Addresses inside functions.
ProfileTestDriver.prototype.funcAddrs_ = {
'lib1-f1': 0x11110, 'lib1-f2': 0x11210,
'lib2-f1': 0x21110, 'lib2-f2': 0x21210,
'T: F1': 0x50110, 'T: F2': 0x50210, 'T: F3': 0x50410 };
ProfileTestDriver.prototype.addFunctions_ = function() {
this.profile.addLibrary('lib1', 0x11000, 0x12000);
this.profile.addStaticCode('lib1-f1', 0x11100, 0x11900);
this.profile.addStaticCode('lib1-f2', 0x11200, 0x11500);
this.profile.addLibrary('lib2', 0x21000, 0x22000);
this.profile.addStaticCode('lib2-f1', 0x21100, 0x21900);
this.profile.addStaticCode('lib2-f2', 0x21200, 0x21500);
this.profile.addCode('T', 'F1', 0x50100, 0x100);
this.profile.addCode('T', 'F2', 0x50200, 0x100);
this.profile.addCode('T', 'F3', 0x50400, 0x100);
};
ProfileTestDriver.prototype.enter = function(funcName) {
// Stack looks like this: [pc, caller, ..., main].
// Therefore, we are adding entries at the beginning.
this.stack_.unshift(this.funcAddrs_[funcName]);
this.profile.recordTick(this.stack_);
};
ProfileTestDriver.prototype.stay = function() {
this.profile.recordTick(this.stack_);
};
ProfileTestDriver.prototype.leave = function() {
this.stack_.shift();
};
ProfileTestDriver.prototype.execute = function() {
this.enter('lib1-f1');
this.enter('lib1-f2');
this.enter('T: F1');
this.enter('T: F2');
this.leave();
this.stay();
this.enter('lib2-f1');
this.enter('lib2-f1');
this.leave();
this.stay();
this.leave();
this.enter('T: F3');
this.enter('T: F3');
this.enter('T: F3');
this.leave();
this.enter('T: F2');
this.stay();
this.leave();
this.leave();
this.leave();
this.leave();
this.enter('lib2-f1');
this.enter('lib1-f1');
this.leave();
this.leave();
this.stay();
this.leave();
};
function Inherits(childCtor, parentCtor) {
function tempCtor() {};
tempCtor.prototype = parentCtor.prototype;
childCtor.superClass_ = parentCtor.prototype;
childCtor.prototype = new tempCtor();
childCtor.prototype.constructor = childCtor;
};
(function testCallTreeBuilding() {
function Driver() {
ProfileTestDriver.call(this);
this.namesTopDown = [];
this.namesBottomUp = [];
};
Inherits(Driver, ProfileTestDriver);
Driver.prototype.enter = function(func) {
this.namesTopDown.push(func);
this.namesBottomUp.unshift(func);
assertNoPathExists(this.profile.getTopDownProfile().getRoot(), this.namesTopDown,
'pre enter/topDown');
assertNoPathExists(this.profile.getBottomUpProfile().getRoot(), this.namesBottomUp,
'pre enter/bottomUp');
Driver.superClass_.enter.call(this, func);
assertPathExists(this.profile.getTopDownProfile().getRoot(), this.namesTopDown,
'post enter/topDown');
assertPathExists(this.profile.getBottomUpProfile().getRoot(), this.namesBottomUp,
'post enter/bottomUp');
};
Driver.prototype.stay = function() {
var preTopDownNodes = countNodes(this.profile, this.profile.traverseTopDownTree);
var preBottomUpNodes = countNodes(this.profile, this.profile.traverseBottomUpTree);
Driver.superClass_.stay.call(this);
var postTopDownNodes = countNodes(this.profile, this.profile.traverseTopDownTree);
var postBottomUpNodes = countNodes(this.profile, this.profile.traverseBottomUpTree);
// Must be no changes in tree layout.
assertEquals(preTopDownNodes, postTopDownNodes, 'stay/topDown');
assertEquals(preBottomUpNodes, postBottomUpNodes, 'stay/bottomUp');
};
Driver.prototype.leave = function() {
Driver.superClass_.leave.call(this);
this.namesTopDown.pop();
this.namesBottomUp.shift();
};
var testDriver = new Driver();
testDriver.execute();
})();
function assertNodeWeights(root, path, selfTicks, totalTicks) {
var node = root.descendToChild(path);
var stack = stackToString(path);
assertNotNull(node, 'node not found: ' + stack);
assertEquals(selfTicks, node.selfWeight, 'self of ' + stack);
assertEquals(totalTicks, node.totalWeight, 'total of ' + stack);
};
(function testTopDownRootProfileTicks() {
var testDriver = new ProfileTestDriver();
testDriver.execute();
var pathWeights = [
[['lib1-f1'], 1, 16],
[['lib1-f1', 'lib1-f2'], 2, 15],
[['lib1-f1', 'lib1-f2', 'T: F1'], 2, 11],
[['lib1-f1', 'lib1-f2', 'T: F1', 'T: F2'], 1, 1],
[['lib1-f1', 'lib1-f2', 'T: F1', 'lib2-f1'], 2, 3],
[['lib1-f1', 'lib1-f2', 'T: F1', 'lib2-f1', 'lib2-f1'], 1, 1],
[['lib1-f1', 'lib1-f2', 'T: F1', 'T: F3'], 1, 5],
[['lib1-f1', 'lib1-f2', 'T: F1', 'T: F3', 'T: F3'], 1, 4],
[['lib1-f1', 'lib1-f2', 'T: F1', 'T: F3', 'T: F3', 'T: F3'], 1, 1],
[['lib1-f1', 'lib1-f2', 'T: F1', 'T: F3', 'T: F3', 'T: F2'], 2, 2],
[['lib1-f1', 'lib1-f2', 'lib2-f1'], 1, 2],
[['lib1-f1', 'lib1-f2', 'lib2-f1', 'lib1-f1'], 1, 1]
];
var root = testDriver.profile.getTopDownProfile().getRoot();
for (var i = 0; i < pathWeights.length; ++i) {
var data = pathWeights[i];
assertNodeWeights(root, data[0], data[1], data[2]);
}
})();
(function testRootFlatProfileTicks() {
function Driver() {
ProfileTestDriver.call(this);
this.namesTopDown = [''];
this.counters = {};
this.root = null;
};
Inherits(Driver, ProfileTestDriver);
Driver.prototype.increment = function(func, self, total) {
if (!(func in this.counters)) {
this.counters[func] = { self: 0, total: 0 };
}
this.counters[func].self += self;
this.counters[func].total += total;
};
Driver.prototype.incrementTotals = function() {
// Only count each function in the stack once.
var met = {};
for (var i = 0; i < this.namesTopDown.length; ++i) {
var name = this.namesTopDown[i];
if (!(name in met)) {
this.increment(name, 0, 1);
}
met[name] = true;
}
};
Driver.prototype.enter = function(func) {
Driver.superClass_.enter.call(this, func);
this.namesTopDown.push(func);
this.increment(func, 1, 0);
this.incrementTotals();
};
Driver.prototype.stay = function() {
Driver.superClass_.stay.call(this);
this.increment(this.namesTopDown[this.namesTopDown.length - 1], 1, 0);
this.incrementTotals();
};
Driver.prototype.leave = function() {
Driver.superClass_.leave.call(this);
this.namesTopDown.pop();
};
Driver.prototype.extractRoot = function() {
assertTrue('' in this.counters);
this.root = this.counters[''];
delete this.counters[''];
};
var testDriver = new Driver();
testDriver.execute();
testDriver.extractRoot();
var counted = 0;
for (var c in testDriver.counters) {
counted++;
}
var flatProfileRoot = testDriver.profile.getFlatProfile().getRoot();
assertEquals(testDriver.root.self, flatProfileRoot.selfWeight);
assertEquals(testDriver.root.total, flatProfileRoot.totalWeight);
var flatProfile = flatProfileRoot.exportChildren();
assertEquals(counted, flatProfile.length, 'counted vs. flatProfile');
for (var i = 0; i < flatProfile.length; ++i) {
var rec = flatProfile[i];
assertTrue(rec.label in testDriver.counters, 'uncounted: ' + rec.label);
var reference = testDriver.counters[rec.label];
assertEquals(reference.self, rec.selfWeight, 'self of ' + rec.label);
assertEquals(reference.total, rec.totalWeight, 'total of ' + rec.label);
}
})();
(function testFunctionCalleesProfileTicks() {
var testDriver = new ProfileTestDriver();
testDriver.execute();
var pathWeights = [
[['lib2-f1'], 3, 5],
[['lib2-f1', 'lib2-f1'], 1, 1],
[['lib2-f1', 'lib1-f1'], 1, 1]
];
var profile = testDriver.profile.getTopDownProfile('lib2-f1');
var root = profile.getRoot();
for (var i = 0; i < pathWeights.length; ++i) {
var data = pathWeights[i];
assertNodeWeights(root, data[0], data[1], data[2]);
}
})();
(function testFunctionFlatProfileTicks() {
var testDriver = new ProfileTestDriver();
testDriver.execute();
var flatWeights = {
'lib2-f1': [1, 1],
'lib1-f1': [1, 1]
};
var flatProfileRoot =
testDriver.profile.getFlatProfile('lib2-f1').findOrAddChild('lib2-f1');
assertEquals(3, flatProfileRoot.selfWeight);
assertEquals(5, flatProfileRoot.totalWeight);
var flatProfile = flatProfileRoot.exportChildren();
assertEquals(2, flatProfile.length, 'counted vs. flatProfile');
for (var i = 0; i < flatProfile.length; ++i) {
var rec = flatProfile[i];
assertTrue(rec.label in flatWeights, 'uncounted: ' + rec.label);
var reference = flatWeights[rec.label];
assertEquals(reference[0], rec.selfWeight, 'self of ' + rec.label);
assertEquals(reference[1], rec.totalWeight, 'total of ' + rec.label);
}
})();