1 Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. 2 DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 4 This code is free software; you can redistribute it and/or modify it 5 under the terms of the GNU General Public License version 2 only, as 6 published by the Free Software Foundation. Oracle designates this 7 particular file as subject to the "Classpath" exception as provided 8 by Oracle in the LICENSE file that accompanied this code. 9 10 This code is distributed in the hope that it will be useful, but WITHOUT 11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 version 2 for more details (a copy is included in the LICENSE file that 14 accompanied this code). 15 16 You should have received a copy of the GNU General Public License version 17 2 along with this work; if not, write to the Free Software Foundation, 18 Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 20 Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 or visit www.oracle.com if you need additional information or have any 22 questions. 23 24 ======================================================================= 25 26 The tests are divided by scenario. 27 28 Each scenario has the problem it tries to solve, and it does that with several options: 29 - BulkBench only compares handmade solutions vs. JDK bulk operations, without resorting to lambdas/methodrefs 30 - LambdaBench does bulk operations with lambdas/methodrefs 31 - XtrasBench has some other interesting options 32 33 All tests in these benchmarks follow the following naming convention. 34 Test names is the concatenation of several markers: 35 36 {hm|bulk}: infrastructure used 37 - hm: "handmade" version which users would presumably implement otherwise 38 - bulk: JDK8-ish bulk operation 39 40 {seq|par}: parallelism mode 41 - seq: sequential mode 42 - par: parallel mode; in "hm" case, this might have different implementations 43 44 {.|inner|lambda|mref}: functional interface type 45 - .: no specific meaning 46 - inner: explicit inner class 47 - lambda: JDK8-ish lambda 48 - mref: JDK8-ish method ref 49 50 E.g. bulk_seq_inner is the test harnesses JDK8 bulk operations in sequential mode, and explicit inner class as function 51 52 All benchmarks should be executed in the following modes (see -t harness cmdline option): 53 - single mode (thread = 1), 54 - core mode (thread = number of cores), 55 - max mode (thread = number of HW threads).