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src/share/vm/prims/whitebox.cpp
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rev 7746 : 8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
Summary: Allow partial use of large pages for auxiliary data structures in G1.
Reviewed-by:
@@ -87,10 +87,14 @@
WB_ENTRY(jint, WB_GetVMPageSize(JNIEnv* env, jobject o))
return os::vm_page_size();
WB_END
+WB_ENTRY(jlong, WB_GetVMLargePageSize(JNIEnv* env, jobject o))
+ return os::large_page_size();
+WB_END
+
class WBIsKlassAliveClosure : public KlassClosure {
Symbol* _name;
bool _found;
public:
WBIsKlassAliveClosure(Symbol* name) : _name(name), _found(false) {}
@@ -1220,10 +1224,11 @@
{CC"getObjectAddress", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress },
{CC"getObjectSize", CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectSize },
{CC"isObjectInOldGen", CC"(Ljava/lang/Object;)Z", (void*)&WB_isObjectInOldGen },
{CC"getHeapOopSize", CC"()I", (void*)&WB_GetHeapOopSize },
{CC"getVMPageSize", CC"()I", (void*)&WB_GetVMPageSize },
+ {CC"getVMLargePageSize", CC"()J", (void*)&WB_GetVMLargePageSize},
{CC"isClassAlive0", CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive },
{CC"parseCommandLine",
CC"(Ljava/lang/String;C[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
(void*) &WB_ParseCommandLine
},
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