Reimplement (address -> code) mapping from tickprocessor.py in JS.

test/mjsunit/tools/codemap.js

+// 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 Splay tree and CodeMap implementations from <project root>/tools.
+// Files: tools/splaytree.js tools/codemap.js
+
+
+function newCodeEntry(size, name) {
+  return new devtools.profiler.CodeMap.CodeEntry(size, name);
+};
+
+
+function assertEntry(codeMap, expected_name, addr) {
+  var entry = codeMap.findEntry(addr);
+  assertNotNull(entry, 'no entry at ' + addr.toString(16));
+  assertEquals(expected_name, entry.name, 'at ' + addr.toString(16));
+};
+
+
+function assertNoEntry(codeMap, addr) {
+  assertNull(codeMap.findEntry(addr), 'at ' + addr.toString(16));
+};
+
+
+(function testStaticCode() {
+  var codeMap = new devtools.profiler.CodeMap();
+  codeMap.addStaticCode(0x1500, newCodeEntry(0x3000, 'lib1'));
+  codeMap.addStaticCode(0x15500, newCodeEntry(0x5000, 'lib2'));
+  codeMap.addStaticCode(0x155500, newCodeEntry(0x10000, 'lib3'));
+  assertNoEntry(codeMap, 0);
+  assertNoEntry(codeMap, 0x1500 - 1);
+  assertEntry(codeMap, 'lib1', 0x1500);
+  assertEntry(codeMap, 'lib1', 0x1500 + 0x100);
+  assertEntry(codeMap, 'lib1', 0x1500 + 0x1000);
+  assertEntry(codeMap, 'lib1', 0x1500 + 0x3000 - 1);
+  assertNoEntry(codeMap, 0x1500 + 0x3000);
+  assertNoEntry(codeMap, 0x15500 - 1);
+  assertEntry(codeMap, 'lib2', 0x15500);
+  assertEntry(codeMap, 'lib2', 0x15500 + 0x100);
+  assertEntry(codeMap, 'lib2', 0x15500 + 0x1000);
+  assertEntry(codeMap, 'lib2', 0x15500 + 0x5000 - 1);
+  assertNoEntry(codeMap, 0x15500 + 0x5000);
+  assertNoEntry(codeMap, 0x155500 - 1);
+  assertEntry(codeMap, 'lib3', 0x155500);
+  assertEntry(codeMap, 'lib3', 0x155500 + 0x100);
+  assertEntry(codeMap, 'lib3', 0x155500 + 0x1000);
+  assertEntry(codeMap, 'lib3', 0x155500 + 0x10000 - 1);
+  assertNoEntry(codeMap, 0x155500 + 0x10000);
+  assertNoEntry(codeMap, 0xFFFFFFFF);
+})();
+
+
+(function testDynamicCode() {
+  var codeMap = new devtools.profiler.CodeMap();
+  codeMap.addCode(0x1500, newCodeEntry(0x200, 'code1'));
+  codeMap.addCode(0x1700, newCodeEntry(0x100, 'code2'));
+  codeMap.addCode(0x1900, newCodeEntry(0x50, 'code3'));
+  codeMap.addCode(0x1950, newCodeEntry(0x10, 'code4'));
+  assertNoEntry(codeMap, 0);
+  assertNoEntry(codeMap, 0x1500 - 1);
+  assertEntry(codeMap, 'code1', 0x1500);
+  assertEntry(codeMap, 'code1', 0x1500 + 0x100);
+  assertEntry(codeMap, 'code1', 0x1500 + 0x200 - 1);
+  assertEntry(codeMap, 'code2', 0x1700);
+  assertEntry(codeMap, 'code2', 0x1700 + 0x50);
+  assertEntry(codeMap, 'code2', 0x1700 + 0x100 - 1);
+  assertNoEntry(codeMap, 0x1700 + 0x100);
+  assertNoEntry(codeMap, 0x1900 - 1);
+  assertEntry(codeMap, 'code3', 0x1900);
+  assertEntry(codeMap, 'code3', 0x1900 + 0x28);
+  assertEntry(codeMap, 'code4', 0x1950);
+  assertEntry(codeMap, 'code4', 0x1950 + 0x7);
+  assertEntry(codeMap, 'code4', 0x1950 + 0x10 - 1);
+  assertNoEntry(codeMap, 0x1950 + 0x10);
+  assertNoEntry(codeMap, 0xFFFFFFFF);
+})();
+
+
+(function testCodeMovesAndDeletions() {
+  var codeMap = new devtools.profiler.CodeMap();
+  codeMap.addCode(0x1500, newCodeEntry(0x200, 'code1'));
+  codeMap.addCode(0x1700, newCodeEntry(0x100, 'code2'));
+  assertEntry(codeMap, 'code1', 0x1500);
+  assertEntry(codeMap, 'code2', 0x1700);
+  codeMap.moveCode(0x1500, 0x1800);
+  assertNoEntry(codeMap, 0x1500);
+  assertEntry(codeMap, 'code2', 0x1700);
+  assertEntry(codeMap, 'code1', 0x1800);
+  codeMap.deleteCode(0x1700);
+  assertNoEntry(codeMap, 0x1700);
+  assertEntry(codeMap, 'code1', 0x1800);
+})();