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      1 // Copyright 2013 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: --expose-debug-as debug --allow-natives-syntax
     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 Debug = debug.Debug
     37 
     38 function foo() {
     39   var x = 1;
     40   return x;
     41 }
     42 
     43 function bar() {
     44   var x = 2;
     45   return x;
     46 }
     47 
     48 foo();
     49 // Mark and kick off recompilation.
     50 %OptimizeFunctionOnNextCall(foo, "concurrent");
     51 foo();
     52 
     53 // Set break points on an unrelated function. This clears both optimized
     54 // and (shared) unoptimized code on foo, and sets both to lazy-compile builtin.
     55 // Clear the break point immediately after to deactivate the debugger.
     56 // Do all of this after compile graph has been created.
     57 Debug.setBreakPoint(bar, 0, 0);
     58 Debug.clearAllBreakPoints();
     59 
     60 // At this point, concurrent recompilation is still blocked.
     61 assertUnoptimized(foo, "no sync");
     62 // Let concurrent recompilation proceed.
     63 %UnblockConcurrentRecompilation();
     64 
     65 // Install optimized code when concurrent optimization finishes.
     66 // This needs to be able to deal with shared code being a builtin.
     67 assertUnoptimized(foo, "sync");
     68