runtime/Options.h

   1 /*
   2  * Copyright (C) 2011 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 #ifndef Options_h
  27 #define Options_h
  28
  29 #include <stdint.h>
  30
  31 namespace JSC { namespace Options {
  32
  33 extern bool useJIT;
  34
  35 extern unsigned maximumOptimizationCandidateInstructionCount;
  36
  37 extern unsigned maximumFunctionForCallInlineCandidateInstructionCount;
  38 extern unsigned maximumFunctionForConstructInlineCandidateInstructionCount;
  39
  40 extern unsigned maximumInliningDepth; // Depth of inline stack, so 1 = no inlining, 2 = one level, etc.
  41
  42 extern int32_t thresholdForJITAfterWarmUp;
  43 extern int32_t thresholdForJITSoon;
  44
  45 extern int32_t thresholdForOptimizeAfterWarmUp;
  46 extern int32_t thresholdForOptimizeAfterLongWarmUp;
  47 extern int32_t thresholdForOptimizeSoon;
  48 extern int32_t thresholdForOptimizeNextInvocation;
  49
  50 extern int32_t executionCounterIncrementForLoop;
  51 extern int32_t executionCounterIncrementForReturn;
  52
  53 extern unsigned desiredSpeculativeSuccessFailRatio;
  54
  55 extern double likelyToTakeSlowCaseThreshold;
  56 extern double couldTakeSlowCaseThreshold;
  57 extern unsigned likelyToTakeSlowCaseMinimumCount;
  58 extern unsigned couldTakeSlowCaseMinimumCount;
  59
  60 extern double osrExitProminenceForFrequentExitSite;
  61
  62 extern unsigned largeFailCountThresholdBase;
  63 extern unsigned largeFailCountThresholdBaseForLoop;
  64 extern unsigned forcedOSRExitCountForReoptimization;
  65
  66 extern unsigned reoptimizationRetryCounterMax;
  67 extern unsigned reoptimizationRetryCounterStep;
  68
  69 extern unsigned minimumOptimizationDelay;
  70 extern unsigned maximumOptimizationDelay;
  71 extern double desiredProfileLivenessRate;
  72 extern double desiredProfileFullnessRate;
  73
  74 extern double doubleVoteRatioForDoubleFormat;
  75
  76 extern unsigned minimumNumberOfScansBetweenRebalance;
  77 extern unsigned gcMarkStackSegmentSize;
  78 extern unsigned minimumNumberOfCellsToKeep;
  79 extern unsigned maximumNumberOfSharedSegments;
  80 extern unsigned sharedStackWakeupThreshold;
  81 JS_EXPORTDATA extern unsigned numberOfGCMarkers;
  82 JS_EXPORTDATA extern unsigned opaqueRootMergeThreshold;
  83
  84 void initializeOptions();
  85
  86 } } // namespace JSC::Options
  87
  88 #endif // Options_h
  89