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8185925: StackFrameInfo::walker field can be replaced with bitmap to save footprint

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8153682: StackFrameInfo.declaringClass could be removed

Reviewed-by: coleenp, mchung
This commit is contained in:
Brent Christian 2017-11-09 11:13:50 -08:00
parent 09c2ca5809
commit ac52bdcdd1
8 changed files with 42 additions and 43 deletions
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12
src/hotspot/share/classfile/javaClasses.cpp
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@ -2258,8 +2258,9 @@ void java_lang_StackFrameInfo::set_method_and_bci(Handle stackFrame, const metho
void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle stack_trace_element, TRAPS) {
ResourceMark rm(THREAD);
Handle k (THREAD, stackFrame->obj_field(_declaringClass_offset));
InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(k()));
Handle mname(THREAD, stackFrame->obj_field(java_lang_StackFrameInfo::_memberName_offset));
Klass* clazz = java_lang_Class::as_Klass(java_lang_invoke_MemberName::clazz(mname()));
InstanceKlass* holder = InstanceKlass::cast(clazz);
Method* method = java_lang_StackFrameInfo::get_method(stackFrame, holder, CHECK);
short version = stackFrame->short_field(_version_offset);
@ -2270,7 +2271,6 @@ void java_lang_StackFrameInfo::to_stack_trace_element(Handle stackFrame, Handle
void java_lang_StackFrameInfo::compute_offsets() {
Klass* k = SystemDictionary::StackFrameInfo_klass();
compute_offset(_declaringClass_offset, k, vmSymbols::declaringClass_name(), vmSymbols::class_signature());
compute_offset(_memberName_offset, k, vmSymbols::memberName_name(), vmSymbols::object_signature());
compute_offset(_bci_offset, k, vmSymbols::bci_name(), vmSymbols::short_signature());
STACKFRAMEINFO_INJECTED_FIELDS(INJECTED_FIELD_COMPUTE_OFFSET);
@ -3679,7 +3679,6 @@ int java_lang_StackTraceElement::moduleVersion_offset;
int java_lang_StackTraceElement::classLoaderName_offset;
int java_lang_StackTraceElement::declaringClass_offset;
int java_lang_StackTraceElement::declaringClassObject_offset;
int java_lang_StackFrameInfo::_declaringClass_offset;
int java_lang_StackFrameInfo::_memberName_offset;
int java_lang_StackFrameInfo::_bci_offset;
int java_lang_StackFrameInfo::_version_offset;
@ -3732,11 +3731,6 @@ void java_lang_StackTraceElement::set_declaringClassObject(oop element, oop valu
element->obj_field_put(declaringClassObject_offset, value);
}
// Support for java_lang_StackFrameInfo
void java_lang_StackFrameInfo::set_declaringClass(oop element, oop value) {
element->obj_field_put(_declaringClass_offset, value);
}
void java_lang_StackFrameInfo::set_version(oop element, short value) {
element->short_field_put(_version_offset, value);
}