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This commit is contained in:
Vladimir Kozlov 2013-06-14 16:33:34 -07:00
commit 55f6f35697
37 changed files with 190 additions and 1105 deletions
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33
hotspot/src/share/vm/prims/jvm.cpp
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@ -3241,24 +3241,10 @@ JVM_ENTRY(jobject, JVM_CurrentClassLoader(JNIEnv *env))
JVM_END
// Utility object for collecting method holders walking down the stack
class KlassLink: public ResourceObj {
public:
KlassHandle klass;
KlassLink* next;
KlassLink(KlassHandle k) { klass = k; next = NULL; }
};
JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env))
JVMWrapper("JVM_GetClassContext");
ResourceMark rm(THREAD);
JvmtiVMObjectAllocEventCollector oam;
// Collect linked list of (handles to) method holders
KlassLink* first = NULL;
KlassLink* last = NULL;
int depth = 0;
vframeStream vfst(thread);
if (SystemDictionary::reflect_CallerSensitive_klass() != NULL) {
@ -3272,32 +3258,23 @@ JVM_ENTRY(jobjectArray, JVM_GetClassContext(JNIEnv *env))
}
// Collect method holders
GrowableArray<KlassHandle>* klass_array = new GrowableArray<KlassHandle>();
for (; !vfst.at_end(); vfst.security_next()) {
Method* m = vfst.method();
// Native frames are not returned
if (!m->is_ignored_by_security_stack_walk() && !m->is_native()) {
Klass* holder = m->method_holder();
assert(holder->is_klass(), "just checking");
depth++;
KlassLink* l = new KlassLink(KlassHandle(thread, holder));
if (first == NULL) {
first = last = l;
} else {
last->next = l;
last = l;
}
klass_array->append(holder);
}
}
// Create result array of type [Ljava/lang/Class;
objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), depth, CHECK_NULL);
objArrayOop result = oopFactory::new_objArray(SystemDictionary::Class_klass(), klass_array->length(), CHECK_NULL);
// Fill in mirrors corresponding to method holders
int index = 0;
while (first != NULL) {
result->obj_at_put(index++, first->klass()->java_mirror());
first = first->next;
for (int i = 0; i < klass_array->length(); i++) {
result->obj_at_put(i, klass_array->at(i)->java_mirror());
}
assert(index == depth, "just checking");
return (jobjectArray) JNIHandles::make_local(env, result);
JVM_END