1 // Copyright 2012 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 // Flags: --allow-natives-syntax --expose-gc 29 // Flags: --concurrent-recompilation --block-concurrent-recompilation 30 31 if (!%IsConcurrentRecompilationSupported()) { 32 print("Concurrent recompilation is disabled. Skipping this test."); 33 quit(); 34 } 35 36 function f(x) { 37 var xx = x * x; 38 var xxstr = xx.toString(); 39 return xxstr.length; 40 } 41 42 function g(x) { 43 var xxx = Math.sqrt(x) | 0; 44 var xxxstr = xxx.toString(); 45 return xxxstr.length; 46 } 47 48 function k(x) { 49 return x * x; 50 } 51 52 f(g(1)); 53 assertUnoptimized(f); 54 assertUnoptimized(g); 55 56 %OptimizeFunctionOnNextCall(f, "concurrent"); 57 %OptimizeFunctionOnNextCall(g, "concurrent"); 58 f(g(2)); // Kick off recompilation. 59 60 assertUnoptimized(f, "no sync"); // Not yet optimized since recompilation 61 assertUnoptimized(g, "no sync"); // is still blocked. 62 63 // Let concurrent recompilation proceed. 64 %UnblockConcurrentRecompilation(); 65 66 assertOptimized(f, "sync"); // Optimized once we sync with the 67 assertOptimized(g, "sync"); // background thread. 68
