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8004728: Add hotspot support for parameter reflection

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Add hotspot support for parameter reflection

Reviewed-by: acorn, jrose, coleenp
This commit is contained in:
Eric Mccorkle 2013-01-08 14:01:36 -05:00 • committed by Coleen Phillimore
parent 89e575df23
commit be968245ec
21 changed files with 567 additions and 273 deletions
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37
hotspot/src/share/vm/prims/jvm.cpp
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@ -1515,7 +1515,7 @@ JVM_ENTRY(jbyteArray, JVM_GetFieldAnnotations(JNIEnv *env, jobject field))
JVM_END
static Method* jvm_get_method_common(jobject method, TRAPS) {
static Method* jvm_get_method_common(jobject method) {
// some of this code was adapted from from jni_FromReflectedMethod
oop reflected = JNIHandles::resolve_non_null(method);
@ -1533,8 +1533,7 @@ static Method* jvm_get_method_common(jobject method, TRAPS) {
}
Klass* k = java_lang_Class::as_Klass(mirror);
KlassHandle kh(THREAD, k);
Method* m = InstanceKlass::cast(kh())->method_with_idnum(slot);
Method* m = InstanceKlass::cast(k)->method_with_idnum(slot);
if (m == NULL) {
assert(false, "cannot find method");
return NULL; // robustness
@ -1548,7 +1547,7 @@ JVM_ENTRY(jbyteArray, JVM_GetMethodAnnotations(JNIEnv *env, jobject method))
JVMWrapper("JVM_GetMethodAnnotations");
// method is a handle to a java.lang.reflect.Method object
Method* m = jvm_get_method_common(method, CHECK_NULL);
Method* m = jvm_get_method_common(method);
return (jbyteArray) JNIHandles::make_local(env,
Annotations::make_java_array(m->annotations(), THREAD));
JVM_END
@ -1558,7 +1557,7 @@ JVM_ENTRY(jbyteArray, JVM_GetMethodDefaultAnnotationValue(JNIEnv *env, jobject m
JVMWrapper("JVM_GetMethodDefaultAnnotationValue");
// method is a handle to a java.lang.reflect.Method object
Method* m = jvm_get_method_common(method, CHECK_NULL);
Method* m = jvm_get_method_common(method);
return (jbyteArray) JNIHandles::make_local(env,
Annotations::make_java_array(m->annotation_default(), THREAD));
JVM_END
@ -1568,7 +1567,7 @@ JVM_ENTRY(jbyteArray, JVM_GetMethodParameterAnnotations(JNIEnv *env, jobject met
JVMWrapper("JVM_GetMethodParameterAnnotations");
// method is a handle to a java.lang.reflect.Method object
Method* m = jvm_get_method_common(method, CHECK_NULL);
Method* m = jvm_get_method_common(method);
return (jbyteArray) JNIHandles::make_local(env,
Annotations::make_java_array(m->parameter_annotations(), THREAD));
JVM_END
@ -1590,6 +1589,32 @@ JVM_ENTRY(jbyteArray, JVM_GetClassTypeAnnotations(JNIEnv *env, jclass cls))
return NULL;
JVM_END
JVM_ENTRY(jobjectArray, JVM_GetMethodParameters(JNIEnv *env, jobject method))
{
JVMWrapper("JVM_GetMethodParameters");
// method is a handle to a java.lang.reflect.Method object
Method* method_ptr = jvm_get_method_common(method);
methodHandle mh (THREAD, method_ptr);
Handle reflected_method (THREAD, JNIHandles::resolve_non_null(method));
const int num_params = mh->method_parameters_length();
if(0 != num_params) {
objArrayOop result_oop = oopFactory::new_objArray(SystemDictionary::reflect_Parameter_klass(), num_params, CHECK_NULL);
objArrayHandle result (THREAD, result_oop);
for(int i = 0; i < num_params; i++) {
MethodParametersElement* params = mh->method_parameters_start();
Symbol* const sym = mh->constants()->symbol_at(params[i].name_cp_index);
oop param = Reflection::new_parameter(reflected_method, i, sym,
params[i].flags, CHECK_NULL);
result->obj_at_put(i, param);
}
return (jobjectArray)JNIHandles::make_local(env, result());
} else {
return (jobjectArray)NULL;
}
}
JVM_END
// New (JDK 1.4) reflection implementation /////////////////////////////////////