dfg/DFGToFTLDeferredCompilationCallback.cpp

   1 /*
   2  * Copyright (C) 2013 Apple Inc. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "DFGToFTLDeferredCompilationCallback.h"
  28
  29 #if ENABLE(FTL_JIT)
  30
  31 #include "CodeBlock.h"
  32 #include "DFGJITCode.h"
  33 #include "Executable.h"
  34 #include "JSCInlines.h"
  35
  36 namespace JSC { namespace DFG {
  37
  38 ToFTLDeferredCompilationCallback::ToFTLDeferredCompilationCallback(
  39     PassRefPtr<CodeBlock> dfgCodeBlock)
  40     : m_dfgCodeBlock(dfgCodeBlock)
  41 {
  42 }
  43
  44 ToFTLDeferredCompilationCallback::~ToFTLDeferredCompilationCallback() { }
  45
  46 PassRefPtr<ToFTLDeferredCompilationCallback> ToFTLDeferredCompilationCallback::create(
  47     PassRefPtr<CodeBlock> dfgCodeBlock)
  48 {
  49     return adoptRef(new ToFTLDeferredCompilationCallback(dfgCodeBlock));
  50 }
  51
  52 void ToFTLDeferredCompilationCallback::compilationDidBecomeReadyAsynchronously(
  53     CodeBlock* codeBlock)
  54 {
  55     if (Options::verboseOSR()) {
  56         dataLog(
  57             "Optimizing compilation of ", *codeBlock, " (for ", *m_dfgCodeBlock,
  58             ") did become ready.\n");
  59     }
  60
  61     m_dfgCodeBlock->jitCode()->dfg()->forceOptimizationSlowPathConcurrently(
  62         m_dfgCodeBlock.get());
  63 }
  64
  65 void ToFTLDeferredCompilationCallback::compilationDidComplete(
  66     CodeBlock* codeBlock, CompilationResult result)
  67 {
  68     if (Options::verboseOSR()) {
  69         dataLog(
  70             "Optimizing compilation of ", *codeBlock, " (for ", *m_dfgCodeBlock,
  71             ") result: ", result, "\n");
  72     }
  73
  74     if (m_dfgCodeBlock->replacement() != m_dfgCodeBlock) {
  75         if (Options::verboseOSR()) {
  76             dataLog(
  77                 "Dropping FTL code block ", *codeBlock, " on the floor because the "
  78                 "DFG code block ", *m_dfgCodeBlock, " was jettisoned.\n");
  79         }
  80         return;
  81     }
  82
  83     if (result == CompilationSuccessful)
  84         codeBlock->install();
  85
  86     m_dfgCodeBlock->jitCode()->dfg()->setOptimizationThresholdBasedOnCompilationResult(
  87         m_dfgCodeBlock.get(), result);
  88
  89     DeferredCompilationCallback::compilationDidComplete(codeBlock, result);
  90 }
  91
  92 } } // JSC::DFG
  93
  94 #endif // ENABLE(FTL_JIT)