diff options
Diffstat (limited to 'Source/JavaScriptCore/runtime/Options.cpp')
| -rw-r--r-- | Source/JavaScriptCore/runtime/Options.cpp | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/Source/JavaScriptCore/runtime/Options.cpp b/Source/JavaScriptCore/runtime/Options.cpp index 386eb4fcf..ed0720b54 100644 --- a/Source/JavaScriptCore/runtime/Options.cpp +++ b/Source/JavaScriptCore/runtime/Options.cpp @@ -26,7 +26,6 @@ #include "config.h" #include "Options.h" -#include "HeapStatistics.h" #include <algorithm> #include <limits> #include <stdio.h> @@ -42,6 +41,10 @@ #include <sys/sysctl.h> #endif +// Set to 1 to control the heuristics using environment variables. +#define ENABLE_RUN_TIME_HEURISTICS 0 + + namespace JSC { static bool parse(const char* string, bool& value) @@ -72,10 +75,10 @@ static bool parse(const char* string, double& value) return sscanf(string, "%lf", &value) == 1; } +#if ENABLE(RUN_TIME_HEURISTICS) template<typename T> void overrideOptionWithHeuristic(T& variable, const char* name) { -#if !OS(WINCE) const char* stringValue = getenv(name); if (!stringValue) return; @@ -84,8 +87,9 @@ void overrideOptionWithHeuristic(T& variable, const char* name) return; fprintf(stderr, "WARNING: failed to parse %s=%s\n", name, stringValue); -#endif } +#endif + static unsigned computeNumberOfGCMarkers(int maxNumberOfGCMarkers) { @@ -126,19 +130,17 @@ void Options::initialize() #if USE(CF) || OS(UNIX) objectsAreImmortal() = !!getenv("JSImmortalZombieEnabled"); useZombieMode() = !!getenv("JSImmortalZombieEnabled") || !!getenv("JSZombieEnabled"); - - gcMaxHeapSize() = getenv("GCMaxHeapSize") ? HeapStatistics::parseMemoryAmount(getenv("GCMaxHeapSize")) : 0; - recordGCPauseTimes() = !!getenv("JSRecordGCPauseTimes"); - logHeapStatisticsAtExit() = gcMaxHeapSize() || recordGCPauseTimes(); #endif // Allow environment vars to override options if applicable. // The evn var should be the name of the option prefixed with // "JSC_". +#if ENABLE(RUN_TIME_HEURISTICS) #define FOR_EACH_OPTION(type_, name_, defaultValue_) \ overrideOptionWithHeuristic(name_(), "JSC_" #name_); JSC_OPTIONS(FOR_EACH_OPTION) #undef FOR_EACH_OPTION +#endif // RUN_TIME_HEURISTICS #if 0 ; // Deconfuse editors that do auto indentation @@ -151,7 +153,7 @@ void Options::initialize() #if !ENABLE(YARR_JIT) useRegExpJIT() = false; #endif - + // Do range checks where needed and make corrections to the options: ASSERT(thresholdForOptimizeAfterLongWarmUp() >= thresholdForOptimizeAfterWarmUp()); ASSERT(thresholdForOptimizeAfterWarmUp() >= thresholdForOptimizeSoon()); |