JSC: make JSC aware of the memory limits set to the MemoryPressureHandler

Author: magomez

Source/JavaScriptCore/heap/Heap.cpp

@@ -87,6 +87,7 @@
 #include <algorithm>
 #include <wtf/CryptographicallyRandomNumber.h>
 #include <wtf/ListDump.h>
+#include <wtf/MemoryPressureHandler.h>
 #include <wtf/RAMSize.h>
 #include <wtf/Scope.h>
 #include <wtf/SimpleStats.h>
@@ -678,6 +679,7 @@ bool Heap::overCriticalMemoryThreshold(MemoryThresholdCallType memoryThresholdCa
 #if USE(BMALLOC_MEMORY_FOOTPRINT_API)
     if (memoryThresholdCallType == MemoryThresholdCallType::Direct || ++m_percentAvailableMemoryCachedCallCount >= 100) {
         m_overCriticalMemoryThreshold = bmalloc::api::percentAvailableMemoryInUse() > Options::criticalGCMemoryThreshold();
+        m_overCriticalMemoryThreshold |= bmalloc::api::memoryFootprint() > MemoryPressureHandler::singleton().criticalMemoryThreshold();
         m_percentAvailableMemoryCachedCallCount = 0;
     }
 

Source/WTF/wtf/MemoryPressureHandler.h

@@ -140,6 +140,7 @@ class MemoryPressureHandler {
 
     void setMemoryPressureStatus(SystemMemoryPressureStatus);
     SystemMemoryPressureStatus memoryPressureStatus() const { return m_memoryPressureStatus; }
+    double criticalMemoryThreshold() const { return m_configuration.baseThreshold * m_configuration.strictThresholdFraction; }
 
     WTF_EXPORT_PRIVATE MemoryUsagePolicy currentMemoryUsagePolicy();