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7071307: MethodHandle bimorphic inlining should consider the frequency

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Reviewed-by: twisti, roland, kvn, iveresov
This commit is contained in:
Tom Rodriguez 2011-09-02 20:58:21 -07:00
parent 1038fed51d
commit 32fd1b087d
20 changed files with 346 additions and 61 deletions
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28
hotspot/src/share/vm/classfile/javaClasses.hpp
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@ -981,6 +981,34 @@ class java_lang_invoke_AdapterMethodHandle: public java_lang_invoke_BoundMethodH
};
// A simple class that maintains an invocation count
class java_lang_invoke_CountingMethodHandle: public java_lang_invoke_MethodHandle {
friend class JavaClasses;
private:
static int _vmcount_offset;
static void compute_offsets();
public:
// Accessors
static int vmcount(oop mh);
static void set_vmcount(oop mh, int count);
// Testers
static bool is_subclass(klassOop klass) {
return SystemDictionary::CountingMethodHandle_klass() != NULL &&
Klass::cast(klass)->is_subclass_of(SystemDictionary::CountingMethodHandle_klass());
}
static bool is_instance(oop obj) {
return obj != NULL && is_subclass(obj->klass());
}
// Accessors for code generation:
static int vmcount_offset_in_bytes() { return _vmcount_offset; }
};
// Interface to java.lang.invoke.MemberName objects
// (These are a private interface for Java code to query the class hierarchy.)