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8039597: WhiteBox :: clean type profiling data

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Reviewed-by: kvn, roland
This commit is contained in:
Igor Ignatyev 2014-04-09 22:37:37 +04:00
parent eb8588549a
commit 613af45d92
2 changed files with 27 additions and 0 deletions
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26
hotspot/src/share/vm/prims/whitebox.cpp
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@ -438,6 +438,30 @@ WB_ENTRY(jboolean, WB_EnqueueMethodForCompilation(JNIEnv* env, jobject o, jobjec
return (mh->queued_for_compilation() || nm != NULL);
WB_END
class VM_WhiteBoxOperation : public VM_Operation {
public:
VM_WhiteBoxOperation() { }
VMOp_Type type() const { return VMOp_WhiteBoxOperation; }
bool allow_nested_vm_operations() const { return true; }
};
class AlwaysFalseClosure : public BoolObjectClosure {
public:
bool do_object_b(oop p) { return false; }
};
static AlwaysFalseClosure always_false;
class VM_WhiteBoxCleanMethodData : public VM_WhiteBoxOperation {
public:
VM_WhiteBoxCleanMethodData(MethodData* mdo) : _mdo(mdo) { }
void doit() {
_mdo->clean_method_data(&always_false);
}
private:
MethodData* _mdo;
};
WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
jmethodID jmid = reflected_method_to_jmid(thread, env, method);
CHECK_JNI_EXCEPTION(env);
@ -453,6 +477,8 @@ WB_ENTRY(void, WB_ClearMethodState(JNIEnv* env, jobject o, jobject method))
for (int i = 0; i < arg_count; i++) {
mdo->set_arg_modified(i, 0);
}
VM_WhiteBoxCleanMethodData op(mdo);
VMThread::execute(&op);
}
mh->clear_not_c1_compilable();

1
hotspot/src/share/vm/runtime/vm_operations.hpp
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@ -97,6 +97,7 @@
template(Exit) \
template(LinuxDllLoad) \
template(RotateGCLog) \
template(WhiteBoxOperation) \
class VM_Operation: public CHeapObj<mtInternal> {
public: