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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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26
hotspot/src/share/vm/classfile/classFileParser.cpp
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@ -1935,6 +1935,8 @@ methodHandle ClassFileParser::parse_method(ClassLoaderData* loader_data,
u2** localvariable_table_start;
u2* localvariable_type_table_length;
u2** localvariable_type_table_start;
u2 method_parameters_length = 0;
u1* method_parameters_data = NULL;
bool parsed_code_attribute = false;
bool parsed_checked_exceptions_attribute = false;
bool parsed_stackmap_attribute = false;
@ -2144,6 +2146,14 @@ methodHandle ClassFileParser::parse_method(ClassLoaderData* loader_data,
parse_checked_exceptions(&checked_exceptions_length,
method_attribute_length,
cp, CHECK_(nullHandle));
} else if (method_attribute_name == vmSymbols::tag_method_parameters()) {
method_parameters_length = cfs->get_u1_fast();
method_parameters_data = cfs->get_u1_buffer();
cfs->skip_u2_fast(method_parameters_length);
cfs->skip_u4_fast(method_parameters_length);
// ignore this attribute if it cannot be reflected
if (!SystemDictionary::Parameter_klass_loaded())
method_parameters_length = 0;
} else if (method_attribute_name == vmSymbols::tag_synthetic()) {
if (method_attribute_length != 0) {
classfile_parse_error(
@ -2231,7 +2241,8 @@ methodHandle ClassFileParser::parse_method(ClassLoaderData* loader_data,
Method* m = Method::allocate(
loader_data, code_length, access_flags, linenumber_table_length,
total_lvt_length, exception_table_length, checked_exceptions_length,
generic_signature_index, ConstMethod::NORMAL, CHECK_(nullHandle));
method_parameters_length, generic_signature_index,
ConstMethod::NORMAL, CHECK_(nullHandle));
ClassLoadingService::add_class_method_size(m->size()*HeapWordSize);
@ -2279,6 +2290,18 @@ methodHandle ClassFileParser::parse_method(ClassLoaderData* loader_data,
exception_table_start, size);
}
// Copy method parameters
if (method_parameters_length > 0) {
MethodParametersElement* elem = m->constMethod()->method_parameters_start();
for(int i = 0; i < method_parameters_length; i++) {
elem[i].name_cp_index =
Bytes::get_Java_u2(method_parameters_data);
method_parameters_data += 2;
elem[i].flags = Bytes::get_Java_u4(method_parameters_data);
method_parameters_data += 4;
}
}
// Copy checked exceptions
if (checked_exceptions_length > 0) {
int size = checked_exceptions_length * sizeof(CheckedExceptionElement) / sizeof(u2);
@ -3042,6 +3065,7 @@ instanceKlassHandle ClassFileParser::parseClassFile(Symbol* name,
TempNewSymbol& parsed_name,
bool verify,
TRAPS) {
// When a retransformable agent is attached, JVMTI caches the
// class bytes that existed before the first retransformation.
// If RedefineClasses() was used before the retransformable