--- a/hotspot/src/share/vm/interpreter/linkResolver.cpp Thu May 28 11:37:13 2015 -0700
+++ b/hotspot/src/share/vm/interpreter/linkResolver.cpp Fri May 29 11:35:51 2015 -0400
@@ -52,13 +52,17 @@
// Implementation of CallInfo
-void CallInfo::set_static(KlassHandle resolved_klass, methodHandle resolved_method, TRAPS) {
+void CallInfo::set_static(KlassHandle resolved_klass, const methodHandle& resolved_method, TRAPS) {
int vtable_index = Method::nonvirtual_vtable_index;
set_common(resolved_klass, resolved_klass, resolved_method, resolved_method, CallInfo::direct_call, vtable_index, CHECK);
}
-void CallInfo::set_interface(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int itable_index, TRAPS) {
+void CallInfo::set_interface(KlassHandle resolved_klass,
+ KlassHandle selected_klass,
+ const methodHandle& resolved_method,
+ const methodHandle& selected_method,
+ int itable_index, TRAPS) {
// This is only called for interface methods. If the resolved_method
// comes from java/lang/Object, it can be the subject of a virtual call, so
// we should pick the vtable index from the resolved method.
@@ -68,7 +72,11 @@
set_common(resolved_klass, selected_klass, resolved_method, selected_method, CallInfo::itable_call, itable_index, CHECK);
}
-void CallInfo::set_virtual(KlassHandle resolved_klass, KlassHandle selected_klass, methodHandle resolved_method, methodHandle selected_method, int vtable_index, TRAPS) {
+void CallInfo::set_virtual(KlassHandle resolved_klass,
+ KlassHandle selected_klass,
+ const methodHandle& resolved_method,
+ const methodHandle& selected_method,
+ int vtable_index, TRAPS) {
assert(vtable_index >= 0 || vtable_index == Method::nonvirtual_vtable_index, "valid index");
assert(vtable_index < 0 || !resolved_method->has_vtable_index() || vtable_index == resolved_method->vtable_index(), "");
CallKind kind = (vtable_index >= 0 && !resolved_method->can_be_statically_bound() ? CallInfo::vtable_call : CallInfo::direct_call);
@@ -76,7 +84,9 @@
assert(!resolved_method->is_compiled_lambda_form(), "these must be handled via an invokehandle call");
}
-void CallInfo::set_handle(methodHandle resolved_method, Handle resolved_appendix, Handle resolved_method_type, TRAPS) {
+void CallInfo::set_handle(const methodHandle& resolved_method,
+ Handle resolved_appendix,
+ Handle resolved_method_type, TRAPS) {
if (resolved_method.is_null()) {
THROW_MSG(vmSymbols::java_lang_InternalError(), "resolved method is null");
}
@@ -93,8 +103,8 @@
void CallInfo::set_common(KlassHandle resolved_klass,
KlassHandle selected_klass,
- methodHandle resolved_method,
- methodHandle selected_method,
+ const methodHandle& resolved_method,
+ const methodHandle& selected_method,
CallKind kind,
int index,
TRAPS) {
@@ -210,8 +220,52 @@
}
#endif //ASSERT
+#ifndef PRODUCT
+void CallInfo::print() {
+ ResourceMark rm;
+ const char* kindstr = "unknown";
+ switch (_call_kind) {
+ case direct_call: kindstr = "direct"; break;
+ case vtable_call: kindstr = "vtable"; break;
+ case itable_call: kindstr = "itable"; break;
+ }
+ tty->print_cr("Call %s@%d %s", kindstr, _call_index,
+ _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string());
+}
+#endif
+//------------------------------------------------------------------------------------------------------------------------
+// Implementation of LinkInfo
+LinkInfo::LinkInfo(constantPoolHandle pool, int index, TRAPS) {
+ // resolve klass
+ Klass* result = pool->klass_ref_at(index, CHECK);
+ _resolved_klass = KlassHandle(THREAD, result);
+
+ // Get name, signature, and static klass
+ _name = pool->name_ref_at(index);
+ _signature = pool->signature_ref_at(index);
+ _current_klass = KlassHandle(THREAD, pool->pool_holder());
+
+ // Coming from the constant pool always checks access
+ _check_access = true;
+}
+
+char* LinkInfo::method_string() const {
+ return Method::name_and_sig_as_C_string(_resolved_klass(), _name, _signature);
+}
+
+#ifndef PRODUCT
+void LinkInfo::print() {
+ ResourceMark rm;
+ tty->print_cr("Link resolved_klass=%s name=%s signature=%s current_klass=%s check_access=%s",
+ _resolved_klass->name()->as_C_string(),
+ _name->as_C_string(),
+ _signature->as_C_string(),
+ _current_klass.is_null() ? "(none)" : _current_klass->name()->as_C_string(),
+ _check_access ? "true" : "false");
+}
+#endif // PRODUCT
//------------------------------------------------------------------------------------------------------------------------
// Klass resolution
@@ -231,11 +285,6 @@
}
}
-void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) {
- Klass* result_oop = pool->klass_ref_at(index, CHECK);
- result = KlassHandle(THREAD, result_oop);
-}
-
//------------------------------------------------------------------------------------------------------------------------
// Method resolution
//
@@ -243,76 +292,84 @@
// Look up method in klasses, including static methods
// Then look up local default methods
-void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, bool checkpolymorphism, bool in_imethod_resolve, TRAPS) {
+methodHandle LinkResolver::lookup_method_in_klasses(const LinkInfo& link_info,
+ bool checkpolymorphism,
+ bool in_imethod_resolve, TRAPS) {
+ KlassHandle klass = link_info.resolved_klass();
+ Symbol* name = link_info.name();
+ Symbol* signature = link_info.signature();
+
// Ignore overpasses so statics can be found during resolution
- Method* result_oop = klass->uncached_lookup_method(name, signature, Klass::skip_overpass);
+ Method* result = klass->uncached_lookup_method(name, signature, Klass::skip_overpass);
if (klass->oop_is_array()) {
// Only consider klass and super klass for arrays
- result = methodHandle(THREAD, result_oop);
- return;
+ return methodHandle(THREAD, result);
}
// JDK 8, JVMS 5.4.3.4: Interface method resolution should
// ignore static and non-public methods of java.lang.Object,
// like clone, finalize, registerNatives.
if (in_imethod_resolve &&
- result_oop != NULL &&
+ result != NULL &&
klass->is_interface() &&
- (result_oop->is_static() || !result_oop->is_public()) &&
- result_oop->method_holder() == SystemDictionary::Object_klass()) {
- result_oop = NULL;
+ (result->is_static() || !result->is_public()) &&
+ result->method_holder() == SystemDictionary::Object_klass()) {
+ result = NULL;
}
// Before considering default methods, check for an overpass in the
// current class if a method has not been found.
- if (result_oop == NULL) {
- result_oop = InstanceKlass::cast(klass())->find_method(name, signature);
+ if (result == NULL) {
+ result = InstanceKlass::cast(klass())->find_method(name, signature);
}
- if (result_oop == NULL) {
+ if (result == NULL) {
Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods();
if (default_methods != NULL) {
- result_oop = InstanceKlass::find_method(default_methods, name, signature);
+ result = InstanceKlass::find_method(default_methods, name, signature);
}
}
- if (checkpolymorphism && result_oop != NULL) {
- vmIntrinsics::ID iid = result_oop->intrinsic_id();
+ if (checkpolymorphism && result != NULL) {
+ vmIntrinsics::ID iid = result->intrinsic_id();
if (MethodHandles::is_signature_polymorphic(iid)) {
// Do not link directly to these. The VM must produce a synthetic one using lookup_polymorphic_method.
- return;
+ return NULL;
}
}
- result = methodHandle(THREAD, result_oop);
+ return methodHandle(THREAD, result);
}
// returns first instance method
// Looks up method in classes, then looks up local default methods
-void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) {
- Method* result_oop = klass->uncached_lookup_method(name, signature, Klass::find_overpass);
- result = methodHandle(THREAD, result_oop);
- while (!result.is_null() && result->is_static() && result->method_holder()->super() != NULL) {
- KlassHandle super_klass = KlassHandle(THREAD, result->method_holder()->super());
- result = methodHandle(THREAD, super_klass->uncached_lookup_method(name, signature, Klass::find_overpass));
+methodHandle LinkResolver::lookup_instance_method_in_klasses(KlassHandle klass,
+ Symbol* name,
+ Symbol* signature, TRAPS) {
+ Method* result = klass->uncached_lookup_method(name, signature, Klass::find_overpass);
+
+ while (result != NULL && result->is_static() && result->method_holder()->super() != NULL) {
+ Klass* super_klass = result->method_holder()->super();
+ result = super_klass->uncached_lookup_method(name, signature, Klass::find_overpass);
}
if (klass->oop_is_array()) {
// Only consider klass and super klass for arrays
- return;
+ return methodHandle(THREAD, result);
}
- if (result.is_null()) {
+ if (result == NULL) {
Array<Method*>* default_methods = InstanceKlass::cast(klass())->default_methods();
if (default_methods != NULL) {
- result = methodHandle(InstanceKlass::find_method(default_methods, name, signature));
- assert(result.is_null() || !result->is_static(), "static defaults not allowed");
+ result = InstanceKlass::find_method(default_methods, name, signature);
+ assert(result == NULL || !result->is_static(), "static defaults not allowed");
}
}
+ return methodHandle(THREAD, result);
}
int LinkResolver::vtable_index_of_interface_method(KlassHandle klass,
- methodHandle resolved_method) {
+ const methodHandle& resolved_method) {
int vtable_index = Method::invalid_vtable_index;
Symbol* name = resolved_method->name();
@@ -336,21 +393,26 @@
return vtable_index;
}
-void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) {
- InstanceKlass *ik = InstanceKlass::cast(klass());
+methodHandle LinkResolver::lookup_method_in_interfaces(const LinkInfo& cp_info, TRAPS) {
+ InstanceKlass *ik = InstanceKlass::cast(cp_info.resolved_klass()());
// Specify 'true' in order to skip default methods when searching the
// interfaces. Function lookup_method_in_klasses() already looked for
// the method in the default methods table.
- result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature, Klass::skip_defaults));
+ return methodHandle(THREAD,
+ ik->lookup_method_in_all_interfaces(cp_info.name(), cp_info.signature(),
+ Klass::skip_defaults));
}
-void LinkResolver::lookup_polymorphic_method(methodHandle& result,
- KlassHandle klass, Symbol* name, Symbol* full_signature,
- KlassHandle current_klass,
+methodHandle LinkResolver::lookup_polymorphic_method(
+ const LinkInfo& link_info,
Handle *appendix_result_or_null,
Handle *method_type_result,
TRAPS) {
+ KlassHandle klass = link_info.resolved_klass();
+ Symbol* name = link_info.name();
+ Symbol* full_signature = link_info.signature();
+
vmIntrinsics::ID iid = MethodHandles::signature_polymorphic_name_id(name);
if (TraceMethodHandles) {
ResourceMark rm(THREAD);
@@ -365,7 +427,7 @@
// Do not erase last argument type (MemberName) if it is a static linkTo method.
bool keep_last_arg = MethodHandles::is_signature_polymorphic_static(iid);
TempNewSymbol basic_signature =
- MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK);
+ MethodHandles::lookup_basic_type_signature(full_signature, keep_last_arg, CHECK_NULL);
if (TraceMethodHandles) {
ResourceMark rm(THREAD);
tty->print_cr("lookup_polymorphic_method %s %s => basic %s",
@@ -373,9 +435,9 @@
full_signature->as_C_string(),
basic_signature->as_C_string());
}
- result = SystemDictionary::find_method_handle_intrinsic(iid,
+ methodHandle result = SystemDictionary::find_method_handle_intrinsic(iid,
basic_signature,
- CHECK);
+ CHECK_NULL);
if (result.not_null()) {
assert(result->is_method_handle_intrinsic(), "MH.invokeBasic or MH.linkTo* intrinsic");
assert(result->intrinsic_id() != vmIntrinsics::_invokeGeneric, "wrong place to find this");
@@ -384,8 +446,8 @@
tty->print("lookup_polymorphic_method => intrinsic ");
result->print_on(tty);
}
- return;
}
+ return result;
} else if (iid == vmIntrinsics::_invokeGeneric
&& !THREAD->is_Compiler_thread()
&& appendix_result_or_null != NULL) {
@@ -399,18 +461,19 @@
Handle(),
Handle(),
true,
- CHECK);
+ CHECK_NULL);
}
}
Handle appendix;
Handle method_type;
- result = SystemDictionary::find_method_handle_invoker(name,
+ methodHandle result = SystemDictionary::find_method_handle_invoker(
+ name,
full_signature,
- current_klass,
+ link_info.current_klass(),
&appendix,
&method_type,
- CHECK);
+ CHECK_NULL);
if (TraceMethodHandles) {
tty->print("lookup_polymorphic_method => (via Java) ");
result->print_on(tty);
@@ -423,7 +486,7 @@
ResourceMark rm(THREAD);
TempNewSymbol basic_signature =
- MethodHandles::lookup_basic_type_signature(full_signature, CHECK);
+ MethodHandles::lookup_basic_type_signature(full_signature, CHECK_NULL);
int actual_size_of_params = result->size_of_parameters();
int expected_size_of_params = ArgumentSizeComputer(basic_signature).size();
// +1 for MethodHandle.this, +1 for trailing MethodType
@@ -441,16 +504,17 @@
assert(appendix_result_or_null != NULL, "");
(*appendix_result_or_null) = appendix;
(*method_type_result) = method_type;
- return;
}
+ return result;
}
}
+ return NULL;
}
void LinkResolver::check_method_accessability(KlassHandle ref_klass,
KlassHandle resolved_klass,
KlassHandle sel_klass,
- methodHandle sel_method,
+ const methodHandle& sel_method,
TRAPS) {
AccessFlags flags = sel_method->access_flags();
@@ -493,8 +557,8 @@
}
}
-void LinkResolver::resolve_method_statically(methodHandle& resolved_method, KlassHandle& resolved_klass,
- Bytecodes::Code code, constantPoolHandle pool, int index, TRAPS) {
+methodHandle LinkResolver::resolve_method_statically(Bytecodes::Code code,
+ constantPoolHandle pool, int index, TRAPS) {
// This method is used only
// (1) in C2 from InlineTree::ok_to_inline (via ciMethod::check_call),
// and
@@ -502,49 +566,108 @@
// It appears to fail when applied to an invokeinterface call site.
// FIXME: Remove this method and ciMethod::check_call; refactor to use the other LinkResolver entry points.
// resolve klass
+ KlassHandle resolved_klass;
if (code == Bytecodes::_invokedynamic) {
resolved_klass = SystemDictionary::MethodHandle_klass();
Symbol* method_name = vmSymbols::invoke_name();
Symbol* method_signature = pool->signature_ref_at(index);
KlassHandle current_klass(THREAD, pool->pool_holder());
- resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK);
- return;
+ LinkInfo link_info(resolved_klass, method_name, method_signature, current_klass);
+ return resolve_method(link_info, /*require_methodref*/false, THREAD);
}
- resolve_klass(resolved_klass, pool, index, CHECK);
-
- Symbol* method_name = pool->name_ref_at(index);
- Symbol* method_signature = pool->signature_ref_at(index);
- KlassHandle current_klass(THREAD, pool->pool_holder());
+ LinkInfo link_info(pool, index, CHECK_NULL);
+ resolved_klass = link_info.resolved_klass();
if (pool->has_preresolution()
|| (resolved_klass() == SystemDictionary::MethodHandle_klass() &&
- MethodHandles::is_signature_polymorphic_name(resolved_klass(), method_name))) {
- Method* result_oop = ConstantPool::method_at_if_loaded(pool, index);
- if (result_oop != NULL) {
- resolved_method = methodHandle(THREAD, result_oop);
- return;
+ MethodHandles::is_signature_polymorphic_name(resolved_klass(), link_info.name()))) {
+ Method* result = ConstantPool::method_at_if_loaded(pool, index);
+ if (result != NULL) {
+ return methodHandle(THREAD, result);
}
}
if (code == Bytecodes::_invokeinterface) {
- resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
+ return resolve_interface_method(link_info, true, THREAD);
} else if (code == Bytecodes::_invokevirtual) {
- resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
+ return resolve_method(link_info, /*require_methodref*/true, THREAD);
} else if (!resolved_klass->is_interface()) {
- resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, false, CHECK);
+ return resolve_method(link_info, /*require_methodref*/false, THREAD);
} else {
bool nostatics = (code == Bytecodes::_invokestatic) ? false : true;
- resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, true, nostatics, CHECK);
+ return resolve_interface_method(link_info, nostatics, THREAD);
}
}
-void LinkResolver::resolve_method(methodHandle& resolved_method, KlassHandle resolved_klass,
- Symbol* method_name, Symbol* method_signature,
- KlassHandle current_klass, bool check_access,
- bool require_methodref, TRAPS) {
+// Check and print a loader constraint violation message for method or interface method
+void LinkResolver::check_method_loader_constraints(const LinkInfo& link_info,
+ const methodHandle& resolved_method,
+ const char* method_type, TRAPS) {
+ Handle current_loader(THREAD, link_info.current_klass()->class_loader());
+ Handle resolved_loader(THREAD, resolved_method->method_holder()->class_loader());
+
+ ResourceMark rm(THREAD);
+ Symbol* failed_type_symbol =
+ SystemDictionary::check_signature_loaders(link_info.signature(), current_loader,
+ resolved_loader, true, CHECK);
+ if (failed_type_symbol != NULL) {
+ const char* msg = "loader constraint violation: when resolving %s"
+ " \"%s\" the class loader (instance of %s) of the current class, %s,"
+ " and the class loader (instance of %s) for the method's defining class, %s, have"
+ " different Class objects for the type %s used in the signature";
+ char* sig = link_info.method_string();
+ const char* loader1_name = SystemDictionary::loader_name(current_loader());
+ char* current = link_info.current_klass()->name()->as_C_string();
+ const char* loader2_name = SystemDictionary::loader_name(resolved_loader());
+ char* target = resolved_method->method_holder()->name()->as_C_string();
+ char* failed_type_name = failed_type_symbol->as_C_string();
+ size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1_name) +
+ strlen(current) + strlen(loader2_name) + strlen(target) +
+ strlen(failed_type_name) + strlen(method_type) + 1;
+ char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
+ jio_snprintf(buf, buflen, msg, method_type, sig, loader1_name, current, loader2_name,
+ target, failed_type_name);
+ THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
+ }
+}
+
+void LinkResolver::check_field_loader_constraints(Symbol* field, Symbol* sig,
+ KlassHandle current_klass,
+ KlassHandle sel_klass, TRAPS) {
+ Handle ref_loader(THREAD, current_klass->class_loader());
+ Handle sel_loader(THREAD, sel_klass->class_loader());
+
+ ResourceMark rm(THREAD); // needed for check_signature_loaders
+ Symbol* failed_type_symbol =
+ SystemDictionary::check_signature_loaders(sig,
+ ref_loader, sel_loader,
+ false,
+ CHECK);
+ if (failed_type_symbol != NULL) {
+ const char* msg = "loader constraint violation: when resolving field"
+ " \"%s\" the class loader (instance of %s) of the referring class, "
+ "%s, and the class loader (instance of %s) for the field's resolved "
+ "type, %s, have different Class objects for that type";
+ char* field_name = field->as_C_string();
+ const char* loader1_name = SystemDictionary::loader_name(ref_loader());
+ char* sel = sel_klass->name()->as_C_string();
+ const char* loader2_name = SystemDictionary::loader_name(sel_loader());
+ char* failed_type_name = failed_type_symbol->as_C_string();
+ size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1_name) +
+ strlen(sel) + strlen(loader2_name) + strlen(failed_type_name) + 1;
+ char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
+ jio_snprintf(buf, buflen, msg, field_name, loader1_name, sel, loader2_name,
+ failed_type_name);
+ THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
+ }
+}
+
+methodHandle LinkResolver::resolve_method(const LinkInfo& link_info,
+ bool require_methodref, TRAPS) {
Handle nested_exception;
+ KlassHandle resolved_klass = link_info.resolved_klass();
// 1. check if methodref required, that resolved_klass is not interfacemethodref
if (require_methodref && resolved_klass->is_interface()) {
@@ -552,20 +675,19 @@
char buf[200];
jio_snprintf(buf, sizeof(buf), "Found interface %s, but class was expected",
resolved_klass()->external_name());
- THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
}
// 2. lookup method in resolved klass and its super klasses
- lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, true, false, CHECK);
+ methodHandle resolved_method = lookup_method_in_klasses(link_info, true, false, CHECK_NULL);
if (resolved_method.is_null() && !resolved_klass->oop_is_array()) { // not found in the class hierarchy
// 3. lookup method in all the interfaces implemented by the resolved klass
- lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK);
+ resolved_method = lookup_method_in_interfaces(link_info, CHECK_NULL);
if (resolved_method.is_null()) {
// JSR 292: see if this is an implicitly generated method MethodHandle.linkToVirtual(*...), etc
- lookup_polymorphic_method(resolved_method, resolved_klass, method_name, method_signature,
- current_klass, (Handle*)NULL, (Handle*)NULL, THREAD);
+ resolved_method = lookup_polymorphic_method(link_info, (Handle*)NULL, (Handle*)NULL, THREAD);
if (HAS_PENDING_EXCEPTION) {
nested_exception = Handle(THREAD, PENDING_EXCEPTION);
CLEAR_PENDING_EXCEPTION;
@@ -576,15 +698,16 @@
if (resolved_method.is_null()) {
// 4. method lookup failed
ResourceMark rm(THREAD);
- THROW_MSG_CAUSE(vmSymbols::java_lang_NoSuchMethodError(),
+ THROW_MSG_CAUSE_(vmSymbols::java_lang_NoSuchMethodError(),
Method::name_and_sig_as_C_string(resolved_klass(),
- method_name,
- method_signature),
- nested_exception);
+ link_info.name(),
+ link_info.signature()),
+ nested_exception, NULL);
}
// 5. access checks, access checking may be turned off when calling from within the VM.
- if (check_access) {
+ KlassHandle current_klass = link_info.current_klass();
+ if (link_info.check_access()) {
assert(current_klass.not_null() , "current_klass should not be null");
// check if method can be accessed by the referring class
@@ -592,76 +715,50 @@
resolved_klass,
KlassHandle(THREAD, resolved_method->method_holder()),
resolved_method,
- CHECK);
+ CHECK_NULL);
// check loader constraints
- Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader());
- Handle class_loader (THREAD, resolved_method->method_holder()->class_loader());
- {
- ResourceMark rm(THREAD);
- Symbol* failed_type_symbol =
- SystemDictionary::check_signature_loaders(method_signature, loader,
- class_loader, true, CHECK);
- if (failed_type_symbol != NULL) {
- const char* msg = "loader constraint violation: when resolving method"
- " \"%s\" the class loader (instance of %s) of the current class, %s,"
- " and the class loader (instance of %s) for the method's defining class, %s, have"
- " different Class objects for the type %s used in the signature";
- char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature);
- const char* loader1 = SystemDictionary::loader_name(loader());
- char* current = InstanceKlass::cast(current_klass())->name()->as_C_string();
- const char* loader2 = SystemDictionary::loader_name(class_loader());
- char* target = InstanceKlass::cast(resolved_method->method_holder())
- ->name()->as_C_string();
- char* failed_type_name = failed_type_symbol->as_C_string();
- size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) +
- strlen(current) + strlen(loader2) + strlen(target) +
- strlen(failed_type_name) + 1;
- char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
- jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2,
- target, failed_type_name);
- THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
- }
- }
+ check_method_loader_constraints(link_info, resolved_method, "method", CHECK_NULL);
}
+
+ return resolved_method;
}
-void LinkResolver::resolve_interface_method(methodHandle& resolved_method,
- KlassHandle resolved_klass,
- Symbol* method_name,
- Symbol* method_signature,
- KlassHandle current_klass,
- bool check_access,
- bool nostatics, TRAPS) {
+methodHandle LinkResolver::resolve_interface_method(const LinkInfo& link_info,
+ bool nostatics, TRAPS) {
+
+ KlassHandle resolved_klass = link_info.resolved_klass();
// check if klass is interface
if (!resolved_klass->is_interface()) {
ResourceMark rm(THREAD);
char buf[200];
jio_snprintf(buf, sizeof(buf), "Found class %s, but interface was expected", resolved_klass()->external_name());
- THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
}
// lookup method in this interface or its super, java.lang.Object
// JDK8: also look for static methods
- lookup_method_in_klasses(resolved_method, resolved_klass, method_name, method_signature, false, true, CHECK);
+ methodHandle resolved_method = lookup_method_in_klasses(link_info, false, true, CHECK_NULL);
if (resolved_method.is_null() && !resolved_klass->oop_is_array()) {
// lookup method in all the super-interfaces
- lookup_method_in_interfaces(resolved_method, resolved_klass, method_name, method_signature, CHECK);
+ resolved_method = lookup_method_in_interfaces(link_info, CHECK_NULL);
}
if (resolved_method.is_null()) {
// no method found
ResourceMark rm(THREAD);
- THROW_MSG(vmSymbols::java_lang_NoSuchMethodError(),
- Method::name_and_sig_as_C_string(resolved_klass(),
- method_name,
- method_signature));
+ THROW_MSG_NULL(vmSymbols::java_lang_NoSuchMethodError(),
+ Method::name_and_sig_as_C_string(resolved_klass(),
+ link_info.name(),
+ link_info.signature()));
}
- if (check_access) {
+ if (link_info.check_access()) {
// JDK8 adds non-public interface methods, and accessability check requirement
+ KlassHandle current_klass = link_info.current_klass();
+
assert(current_klass.not_null() , "current_klass should not be null");
// check if method can be accessed by the referring class
@@ -669,38 +766,9 @@
resolved_klass,
KlassHandle(THREAD, resolved_method->method_holder()),
resolved_method,
- CHECK);
+ CHECK_NULL);
- HandleMark hm(THREAD);
- Handle loader (THREAD, InstanceKlass::cast(current_klass())->class_loader());
- Handle class_loader (THREAD, resolved_method->method_holder()->class_loader());
- {
- ResourceMark rm(THREAD);
- Symbol* failed_type_symbol =
- SystemDictionary::check_signature_loaders(method_signature, loader,
- class_loader, true, CHECK);
- if (failed_type_symbol != NULL) {
- const char* msg = "loader constraint violation: when resolving "
- "interface method \"%s\" the class loader (instance of %s) of the "
- "current class, %s, and the class loader (instance of %s) for "
- "the method's defining class, %s, have different Class objects for the type %s "
- "used in the signature";
- char* sig = Method::name_and_sig_as_C_string(resolved_klass(),method_name,method_signature);
- const char* loader1 = SystemDictionary::loader_name(loader());
- char* current = InstanceKlass::cast(current_klass())->name()->as_C_string();
- const char* loader2 = SystemDictionary::loader_name(class_loader());
- char* target = InstanceKlass::cast(resolved_method->method_holder())
- ->name()->as_C_string();
- char* failed_type_name = failed_type_symbol->as_C_string();
- size_t buflen = strlen(msg) + strlen(sig) + strlen(loader1) +
- strlen(current) + strlen(loader2) + strlen(target) +
- strlen(failed_type_name) + 1;
- char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
- jio_snprintf(buf, buflen, msg, sig, loader1, current, loader2,
- target, failed_type_name);
- THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
- }
- }
+ check_method_loader_constraints(link_info, resolved_method, "interface method", CHECK_NULL);
}
if (nostatics && resolved_method->is_static()) {
@@ -709,28 +777,16 @@
jio_snprintf(buf, sizeof(buf), "Expected instance not static method %s",
Method::name_and_sig_as_C_string(resolved_klass(),
resolved_method->name(), resolved_method->signature()));
- THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
}
if (TraceItables && Verbose) {
- ResourceMark rm(THREAD);
- tty->print("invokeinterface resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ",
- (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()),
- (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()),
- Method::name_and_sig_as_C_string(resolved_klass(),
- resolved_method->name(),
- resolved_method->signature()),
- resolved_method->method_holder()->internal_name()
- );
- resolved_method->access_flags().print_on(tty);
- if (resolved_method->is_default_method()) {
- tty->print("default ");
- }
- if (resolved_method->is_overpass()) {
- tty->print("overpass");
- }
+ trace_method_resolution("invokeinterface resolved method: caller-class",
+ link_info.current_klass(), resolved_klass, resolved_method);
tty->cr();
}
+
+ return resolved_method;
}
//------------------------------------------------------------------------------------------------------------------------
@@ -739,7 +795,7 @@
void LinkResolver::check_field_accessability(KlassHandle ref_klass,
KlassHandle resolved_klass,
KlassHandle sel_klass,
- fieldDescriptor& fd,
+ const fieldDescriptor& fd,
TRAPS) {
if (!Reflection::verify_field_access(ref_klass(),
resolved_klass(),
@@ -759,30 +815,27 @@
}
}
-void LinkResolver::resolve_field_access(fieldDescriptor& result, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) {
- // Load these early in case the resolve of the containing klass fails
- Symbol* field = pool->name_ref_at(index);
- Symbol* sig = pool->signature_ref_at(index);
-
- // resolve specified klass
- KlassHandle resolved_klass;
- resolve_klass(resolved_klass, pool, index, CHECK);
-
- KlassHandle current_klass(THREAD, pool->pool_holder());
- resolve_field(result, resolved_klass, field, sig, current_klass, byte, true, true, CHECK);
+void LinkResolver::resolve_field_access(fieldDescriptor& fd, constantPoolHandle pool, int index, Bytecodes::Code byte, TRAPS) {
+ LinkInfo link_info(pool, index, CHECK);
+ resolve_field(fd, link_info, byte, true, CHECK);
}
-void LinkResolver::resolve_field(fieldDescriptor& fd, KlassHandle resolved_klass, Symbol* field, Symbol* sig,
- KlassHandle current_klass, Bytecodes::Code byte, bool check_access, bool initialize_class,
+void LinkResolver::resolve_field(fieldDescriptor& fd,
+ const LinkInfo& link_info,
+ Bytecodes::Code byte, bool initialize_class,
TRAPS) {
assert(byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic ||
byte == Bytecodes::_getfield || byte == Bytecodes::_putfield ||
byte == Bytecodes::_nofast_getfield || byte == Bytecodes::_nofast_putfield ||
- (byte == Bytecodes::_nop && !check_access), "bad field access bytecode");
+ (byte == Bytecodes::_nop && !link_info.check_access()), "bad field access bytecode");
bool is_static = (byte == Bytecodes::_getstatic || byte == Bytecodes::_putstatic);
bool is_put = (byte == Bytecodes::_putfield || byte == Bytecodes::_putstatic || byte == Bytecodes::_nofast_putfield);
// Check if there's a resolved klass containing the field
+ KlassHandle resolved_klass = link_info.resolved_klass();
+ Symbol* field = link_info.name();
+ Symbol* sig = link_info.signature();
+
if (resolved_klass.is_null()) {
ResourceMark rm(THREAD);
THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string());
@@ -796,11 +849,12 @@
THROW_MSG(vmSymbols::java_lang_NoSuchFieldError(), field->as_C_string());
}
- if (!check_access)
+ if (!link_info.check_access())
// Access checking may be turned off when calling from within the VM.
return;
// check access
+ KlassHandle current_klass = link_info.current_klass();
check_field_accessability(current_klass, resolved_klass, sel_klass, fd, CHECK);
// check for errors
@@ -827,34 +881,7 @@
}
if (sel_klass() != current_klass()) {
- HandleMark hm(THREAD);
- Handle ref_loader (THREAD, InstanceKlass::cast(current_klass())->class_loader());
- Handle sel_loader (THREAD, InstanceKlass::cast(sel_klass())->class_loader());
- {
- ResourceMark rm(THREAD);
- Symbol* failed_type_symbol =
- SystemDictionary::check_signature_loaders(sig,
- ref_loader, sel_loader,
- false,
- CHECK);
- if (failed_type_symbol != NULL) {
- const char* msg = "loader constraint violation: when resolving field"
- " \"%s\" the class loader (instance of %s) of the referring class, "
- "%s, and the class loader (instance of %s) for the field's resolved "
- "type, %s, have different Class objects for that type";
- char* field_name = field->as_C_string();
- const char* loader1 = SystemDictionary::loader_name(ref_loader());
- char* sel = InstanceKlass::cast(sel_klass())->name()->as_C_string();
- const char* loader2 = SystemDictionary::loader_name(sel_loader());
- char* failed_type_name = failed_type_symbol->as_C_string();
- size_t buflen = strlen(msg) + strlen(field_name) + strlen(loader1) +
- strlen(sel) + strlen(loader2) + strlen(failed_type_name) + 1;
- char* buf = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, buflen);
- jio_snprintf(buf, buflen, msg, field_name, loader1, sel, loader2,
- failed_type_name);
- THROW_MSG(vmSymbols::java_lang_LinkageError(), buf);
- }
- }
+ check_field_loader_constraints(field, sig, current_klass, sel_klass, CHECK);
}
// return information. note that the klass is set to the actual klass containing the
@@ -873,32 +900,38 @@
// recv_klass the receiver klass
-void LinkResolver::resolve_static_call(CallInfo& result, KlassHandle& resolved_klass, Symbol* method_name,
- Symbol* method_signature, KlassHandle current_klass,
- bool check_access, bool initialize_class, TRAPS) {
- methodHandle resolved_method;
- linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
- resolved_klass = KlassHandle(THREAD, resolved_method->method_holder());
+void LinkResolver::resolve_static_call(CallInfo& result,
+ const LinkInfo& link_info,
+ bool initialize_class, TRAPS) {
+ methodHandle resolved_method = linktime_resolve_static_method(link_info, CHECK);
+ // The resolved class can change as a result of this resolution.
+ KlassHandle resolved_klass = KlassHandle(THREAD, resolved_method->method_holder());
+
+ Method* save_resolved_method = resolved_method();
// Initialize klass (this should only happen if everything is ok)
if (initialize_class && resolved_klass->should_be_initialized()) {
resolved_klass->initialize(CHECK);
- linktime_resolve_static_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
+ // Use updated LinkInfo (to reresolve with resolved_klass as method_holder?)
+ LinkInfo new_info(resolved_klass, link_info.name(), link_info.signature(),
+ link_info.current_klass(), link_info.check_access());
+ resolved_method = linktime_resolve_static_method(new_info, CHECK);
}
+ assert(save_resolved_method == resolved_method(), "does this change?");
// setup result
result.set_static(resolved_klass, resolved_method, CHECK);
}
// throws linktime exceptions
-void LinkResolver::linktime_resolve_static_method(methodHandle& resolved_method, KlassHandle resolved_klass,
- Symbol* method_name, Symbol* method_signature,
- KlassHandle current_klass, bool check_access, TRAPS) {
+methodHandle LinkResolver::linktime_resolve_static_method(const LinkInfo& link_info, TRAPS) {
+ KlassHandle resolved_klass = link_info.resolved_klass();
+ methodHandle resolved_method;
if (!resolved_klass->is_interface()) {
- resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK);
+ resolved_method = resolve_method(link_info, /*require_methodref*/false, CHECK_NULL);
} else {
- resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK);
+ resolved_method = resolve_interface_method(link_info, /*nostatics*/false, CHECK_NULL);
}
assert(resolved_method->name() != vmSymbols::class_initializer_name(), "should have been checked in verifier");
@@ -909,22 +942,25 @@
jio_snprintf(buf, sizeof(buf), "Expected static method %s", Method::name_and_sig_as_C_string(resolved_klass(),
resolved_method->name(),
resolved_method->signature()));
- THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
}
+ return resolved_method;
}
-void LinkResolver::resolve_special_call(CallInfo& result, KlassHandle resolved_klass, Symbol* method_name,
- Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) {
- methodHandle resolved_method;
- linktime_resolve_special_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
- runtime_resolve_special_method(result, resolved_method, resolved_klass, current_klass, check_access, CHECK);
+void LinkResolver::resolve_special_call(CallInfo& result,
+ const LinkInfo& link_info,
+ TRAPS) {
+ methodHandle resolved_method = linktime_resolve_special_method(link_info, CHECK);
+ runtime_resolve_special_method(result, resolved_method,
+ link_info.resolved_klass(),
+ link_info.current_klass(),
+ link_info.check_access(), CHECK);
}
// throws linktime exceptions
-void LinkResolver::linktime_resolve_special_method(methodHandle& resolved_method, KlassHandle resolved_klass,
- Symbol* method_name, Symbol* method_signature,
- KlassHandle current_klass, bool check_access, TRAPS) {
+methodHandle LinkResolver::linktime_resolve_special_method(const LinkInfo& link_info,
+ TRAPS) {
// Invokespecial is called for multiple special reasons:
// <init>
@@ -932,11 +968,13 @@
// superclass.method, which can also resolve to a default method
// and the selected method is recalculated relative to the direct superclass
// superinterface.method, which explicitly does not check shadowing
+ KlassHandle resolved_klass = link_info.resolved_klass();
+ methodHandle resolved_method;
if (!resolved_klass->is_interface()) {
- resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, false, CHECK);
+ resolved_method = resolve_method(link_info, /*require_methodref*/false, CHECK_NULL);
} else {
- resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK);
+ resolved_method = resolve_interface_method(link_info, /*nostatics*/true, CHECK_NULL);
}
// check if method name is <init>, that it is found in same klass as static type
@@ -951,10 +989,11 @@
resolved_method->name()->as_C_string(),
resolved_method->signature()->as_C_string()
);
- return;
+ return NULL;
}
// check if invokespecial's interface method reference is in an indirect superinterface
+ KlassHandle current_klass = link_info.current_klass();
if (!current_klass.is_null() && resolved_klass->is_interface()) {
Klass *klass_to_check = !InstanceKlass::cast(current_klass())->is_anonymous() ?
current_klass() :
@@ -973,7 +1012,7 @@
resolved_method->name(),
resolved_method->signature()),
current_klass->external_name());
- THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
}
}
@@ -984,35 +1023,26 @@
jio_snprintf(buf, sizeof(buf),
"Expecting non-static method %s",
Method::name_and_sig_as_C_string(resolved_klass(),
- resolved_method->name(),
- resolved_method->signature()));
- THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ resolved_method->name(),
+ resolved_method->signature()));
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
}
if (TraceItables && Verbose) {
- ResourceMark rm(THREAD);
- tty->print("invokespecial resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ",
- (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()),
- (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()),
- Method::name_and_sig_as_C_string(resolved_klass(),
- resolved_method->name(),
- resolved_method->signature()),
- resolved_method->method_holder()->internal_name()
- );
- resolved_method->access_flags().print_on(tty);
- if (resolved_method->is_default_method()) {
- tty->print("default ");
- }
- if (resolved_method->is_overpass()) {
- tty->print("overpass");
- }
+ trace_method_resolution("invokespecial resolved method: caller-class:",
+ current_klass, resolved_klass, resolved_method);
tty->cr();
}
+
+ return resolved_method;
}
// throws runtime exceptions
-void LinkResolver::runtime_resolve_special_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass,
- KlassHandle current_klass, bool check_access, TRAPS) {
+void LinkResolver::runtime_resolve_special_method(CallInfo& result,
+ const methodHandle& resolved_method,
+ KlassHandle resolved_klass,
+ KlassHandle current_klass,
+ bool check_access, TRAPS) {
// resolved method is selected method unless we have an old-style lookup
// for a superclass method
@@ -1037,7 +1067,7 @@
resolved_method->name() != vmSymbols::object_initializer_name()) {
// Lookup super method
KlassHandle super_klass(THREAD, current_klass->super());
- lookup_instance_method_in_klasses(sel_method, super_klass,
+ sel_method = lookup_instance_method_in_klasses(super_klass,
resolved_method->name(),
resolved_method->signature(), CHECK);
// check if found
@@ -1066,26 +1096,13 @@
ResourceMark rm(THREAD);
THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
Method::name_and_sig_as_C_string(resolved_klass(),
- sel_method->name(),
- sel_method->signature()));
+ sel_method->name(),
+ sel_method->signature()));
}
if (TraceItables && Verbose) {
- ResourceMark rm(THREAD);
- tty->print("invokespecial selected method: resolved-class:%s, method:%s, method_holder:%s, access_flags: ",
- (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()),
- Method::name_and_sig_as_C_string(resolved_klass(),
- sel_method->name(),
- sel_method->signature()),
- sel_method->method_holder()->internal_name()
- );
- sel_method->access_flags().print_on(tty);
- if (sel_method->is_default_method()) {
- tty->print("default ");
- }
- if (sel_method->is_overpass()) {
- tty->print("overpass");
- }
+ trace_method_resolution("invokespecial selected method: resolved-class:",
+ resolved_klass, resolved_klass, sel_method);
tty->cr();
}
@@ -1093,25 +1110,29 @@
result.set_static(resolved_klass, sel_method, CHECK);
}
-void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass, KlassHandle resolved_klass,
- Symbol* method_name, Symbol* method_signature, KlassHandle current_klass,
- bool check_access, bool check_null_and_abstract, TRAPS) {
- methodHandle resolved_method;
- linktime_resolve_virtual_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
- runtime_resolve_virtual_method(result, resolved_method, resolved_klass, recv, receiver_klass, check_null_and_abstract, CHECK);
+void LinkResolver::resolve_virtual_call(CallInfo& result, Handle recv, KlassHandle receiver_klass,
+ const LinkInfo& link_info,
+ bool check_null_and_abstract, TRAPS) {
+ methodHandle resolved_method = linktime_resolve_virtual_method(link_info, CHECK);
+ runtime_resolve_virtual_method(result, resolved_method,
+ link_info.resolved_klass(),
+ recv, receiver_klass,
+ check_null_and_abstract, CHECK);
}
// throws linktime exceptions
-void LinkResolver::linktime_resolve_virtual_method(methodHandle &resolved_method, KlassHandle resolved_klass,
- Symbol* method_name, Symbol* method_signature,
- KlassHandle current_klass, bool check_access, TRAPS) {
+methodHandle LinkResolver::linktime_resolve_virtual_method(const LinkInfo& link_info,
+ TRAPS) {
// normal method resolution
- resolve_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK);
+ methodHandle resolved_method = resolve_method(link_info, /*require_methodref*/true, CHECK_NULL);
assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier");
assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier");
// check if private interface method
+ KlassHandle resolved_klass = link_info.resolved_klass();
+ KlassHandle current_klass = link_info.current_klass();
+
if (resolved_klass->is_interface() && resolved_method->is_private()) {
ResourceMark rm(THREAD);
char buf[200];
@@ -1120,7 +1141,7 @@
resolved_method->name(),
resolved_method->signature()),
(current_klass.is_null() ? "<NULL>" : current_klass->internal_name()));
- THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
}
// check if not static
@@ -1130,33 +1151,21 @@
jio_snprintf(buf, sizeof(buf), "Expecting non-static method %s", Method::name_and_sig_as_C_string(resolved_klass(),
resolved_method->name(),
resolved_method->signature()));
- THROW_MSG(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
+ THROW_MSG_NULL(vmSymbols::java_lang_IncompatibleClassChangeError(), buf);
}
if (PrintVtables && Verbose) {
- ResourceMark rm(THREAD);
- tty->print("invokevirtual resolved method: caller-class:%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ",
- (current_klass.is_null() ? "<NULL>" : current_klass->internal_name()),
- (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()),
- Method::name_and_sig_as_C_string(resolved_klass(),
- resolved_method->name(),
- resolved_method->signature()),
- resolved_method->method_holder()->internal_name()
- );
- resolved_method->access_flags().print_on(tty);
- if (resolved_method->is_default_method()) {
- tty->print("default ");
- }
- if (resolved_method->is_overpass()) {
- tty->print("overpass");
- }
+ trace_method_resolution("invokevirtual resolved method: caller-class:",
+ current_klass, resolved_klass, resolved_method);
tty->cr();
}
+
+ return resolved_method;
}
// throws runtime exceptions
void LinkResolver::runtime_resolve_virtual_method(CallInfo& result,
- methodHandle resolved_method,
+ const methodHandle& resolved_method,
KlassHandle resolved_klass,
Handle recv,
KlassHandle recv_klass,
@@ -1227,50 +1236,40 @@
}
if (PrintVtables && Verbose) {
- ResourceMark rm(THREAD);
- tty->print("invokevirtual selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, vtable_index:%d, access_flags: ",
- (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()),
- (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()),
- Method::name_and_sig_as_C_string(resolved_klass(),
- resolved_method->name(),
- resolved_method->signature()),
- selected_method->method_holder()->internal_name(),
- vtable_index
- );
- selected_method->access_flags().print_on(tty);
- if (selected_method->is_default_method()) {
- tty->print("default ");
- }
- if (selected_method->is_overpass()) {
- tty->print("overpass");
- }
- tty->cr();
+ trace_method_resolution("invokevirtual selected method: receiver-class:",
+ recv_klass, resolved_klass, selected_method);
+ tty->print_cr("vtable_index:%d", vtable_index);
}
// setup result
result.set_virtual(resolved_klass, recv_klass, resolved_method, selected_method, vtable_index, CHECK);
}
-void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass, KlassHandle resolved_klass,
- Symbol* method_name, Symbol* method_signature, KlassHandle current_klass,
- bool check_access, bool check_null_and_abstract, TRAPS) {
- methodHandle resolved_method;
- linktime_resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, CHECK);
- runtime_resolve_interface_method(result, resolved_method, resolved_klass, recv, recv_klass, check_null_and_abstract, CHECK);
+void LinkResolver::resolve_interface_call(CallInfo& result, Handle recv, KlassHandle recv_klass,
+ const LinkInfo& link_info,
+ bool check_null_and_abstract, TRAPS) {
+ // throws linktime exceptions
+ methodHandle resolved_method = linktime_resolve_interface_method(link_info, CHECK);
+ runtime_resolve_interface_method(result, resolved_method,link_info.resolved_klass(),
+ recv, recv_klass, check_null_and_abstract, CHECK);
}
-// throws linktime exceptions
-void LinkResolver::linktime_resolve_interface_method(methodHandle& resolved_method, KlassHandle resolved_klass, Symbol* method_name,
- Symbol* method_signature, KlassHandle current_klass, bool check_access, TRAPS) {
+methodHandle LinkResolver::linktime_resolve_interface_method(const LinkInfo& link_info,
+ TRAPS) {
// normal interface method resolution
- resolve_interface_method(resolved_method, resolved_klass, method_name, method_signature, current_klass, check_access, true, CHECK);
-
+ methodHandle resolved_method = resolve_interface_method(link_info, true, CHECK_NULL);
assert(resolved_method->name() != vmSymbols::object_initializer_name(), "should have been checked in verifier");
assert(resolved_method->name() != vmSymbols::class_initializer_name (), "should have been checked in verifier");
+
+ return resolved_method;
}
// throws runtime exceptions
-void LinkResolver::runtime_resolve_interface_method(CallInfo& result, methodHandle resolved_method, KlassHandle resolved_klass,
- Handle recv, KlassHandle recv_klass, bool check_null_and_abstract, TRAPS) {
+void LinkResolver::runtime_resolve_interface_method(CallInfo& result,
+ const methodHandle& resolved_method,
+ KlassHandle resolved_klass,
+ Handle recv,
+ KlassHandle recv_klass,
+ bool check_null_and_abstract, TRAPS) {
// check if receiver exists
if (check_null_and_abstract && recv.is_null()) {
THROW(vmSymbols::java_lang_NullPointerException());
@@ -1298,12 +1297,11 @@
}
// do lookup based on receiver klass
- methodHandle sel_method;
// This search must match the linktime preparation search for itable initialization
// to correctly enforce loader constraints for interface method inheritance
- lookup_instance_method_in_klasses(sel_method, recv_klass,
- resolved_method->name(),
- resolved_method->signature(), CHECK);
+ methodHandle sel_method = lookup_instance_method_in_klasses(recv_klass,
+ resolved_method->name(),
+ resolved_method->signature(), CHECK);
if (sel_method.is_null() && !check_null_and_abstract) {
// In theory this is a harmless placeholder value, but
// in practice leaving in null affects the nsk default method tests.
@@ -1314,9 +1312,9 @@
if (sel_method.is_null()) {
ResourceMark rm(THREAD);
THROW_MSG(vmSymbols::java_lang_AbstractMethodError(),
- Method::name_and_sig_as_C_string(recv_klass(),
- resolved_method->name(),
- resolved_method->signature()));
+ Method::name_and_sig_as_C_string(recv_klass(),
+ resolved_method->name(),
+ resolved_method->signature()));
}
// check access
// Throw Illegal Access Error if sel_method is not public.
@@ -1337,22 +1335,8 @@
}
if (TraceItables && Verbose) {
- ResourceMark rm(THREAD);
- tty->print("invokeinterface selected method: receiver-class:%s, resolved-class:%s, method:%s, method_holder:%s, access_flags: ",
- (recv_klass.is_null() ? "<NULL>" : recv_klass->internal_name()),
- (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()),
- Method::name_and_sig_as_C_string(resolved_klass(),
- resolved_method->name(),
- resolved_method->signature()),
- sel_method->method_holder()->internal_name()
- );
- sel_method->access_flags().print_on(tty);
- if (sel_method->is_default_method()) {
- tty->print("default ");
- }
- if (sel_method->is_overpass()) {
- tty->print("overpass");
- }
+ trace_method_resolution("invokeinterface selected method: receiver-class",
+ recv_klass, resolved_klass, sel_method);
tty->cr();
}
// setup result
@@ -1368,14 +1352,9 @@
methodHandle LinkResolver::linktime_resolve_interface_method_or_null(
- KlassHandle resolved_klass,
- Symbol* method_name,
- Symbol* method_signature,
- KlassHandle current_klass,
- bool check_access) {
+ const LinkInfo& link_info) {
EXCEPTION_MARK;
- methodHandle method_result;
- linktime_resolve_interface_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD);
+ methodHandle method_result = linktime_resolve_interface_method(link_info, THREAD);
if (HAS_PENDING_EXCEPTION) {
CLEAR_PENDING_EXCEPTION;
return methodHandle();
@@ -1385,14 +1364,9 @@
}
methodHandle LinkResolver::linktime_resolve_virtual_method_or_null(
- KlassHandle resolved_klass,
- Symbol* method_name,
- Symbol* method_signature,
- KlassHandle current_klass,
- bool check_access) {
+ const LinkInfo& link_info) {
EXCEPTION_MARK;
- methodHandle method_result;
- linktime_resolve_virtual_method(method_result, resolved_klass, method_name, method_signature, current_klass, check_access, THREAD);
+ methodHandle method_result = linktime_resolve_virtual_method(link_info, THREAD);
if (HAS_PENDING_EXCEPTION) {
CLEAR_PENDING_EXCEPTION;
return methodHandle();
@@ -1403,14 +1377,10 @@
methodHandle LinkResolver::resolve_virtual_call_or_null(
KlassHandle receiver_klass,
- KlassHandle resolved_klass,
- Symbol* name,
- Symbol* signature,
- KlassHandle current_klass,
- bool check_access) {
+ const LinkInfo& link_info) {
EXCEPTION_MARK;
CallInfo info;
- resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, check_access, false, THREAD);
+ resolve_virtual_call(info, Handle(), receiver_klass, link_info, false, THREAD);
if (HAS_PENDING_EXCEPTION) {
CLEAR_PENDING_EXCEPTION;
return methodHandle();
@@ -1420,14 +1390,10 @@
methodHandle LinkResolver::resolve_interface_call_or_null(
KlassHandle receiver_klass,
- KlassHandle resolved_klass,
- Symbol* name,
- Symbol* signature,
- KlassHandle current_klass,
- bool check_access) {
+ const LinkInfo& link_info) {
EXCEPTION_MARK;
CallInfo info;
- resolve_interface_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, check_access, false, THREAD);
+ resolve_interface_call(info, Handle(), receiver_klass, link_info, false, THREAD);
if (HAS_PENDING_EXCEPTION) {
CLEAR_PENDING_EXCEPTION;
return methodHandle();
@@ -1435,15 +1401,12 @@
return info.selected_method();
}
-int LinkResolver::resolve_virtual_vtable_index(
- KlassHandle receiver_klass,
- KlassHandle resolved_klass,
- Symbol* name,
- Symbol* signature,
- KlassHandle current_klass) {
+int LinkResolver::resolve_virtual_vtable_index(KlassHandle receiver_klass,
+ const LinkInfo& link_info) {
EXCEPTION_MARK;
CallInfo info;
- resolve_virtual_call(info, Handle(), receiver_klass, resolved_klass, name, signature, current_klass, true, false, THREAD);
+ resolve_virtual_call(info, Handle(), receiver_klass, link_info,
+ /*check_null_or_abstract*/false, THREAD);
if (HAS_PENDING_EXCEPTION) {
CLEAR_PENDING_EXCEPTION;
return Method::invalid_vtable_index;
@@ -1451,15 +1414,10 @@
return info.vtable_index();
}
-methodHandle LinkResolver::resolve_static_call_or_null(
- KlassHandle resolved_klass,
- Symbol* name,
- Symbol* signature,
- KlassHandle current_klass,
- bool check_access) {
+methodHandle LinkResolver::resolve_static_call_or_null(const LinkInfo& link_info) {
EXCEPTION_MARK;
CallInfo info;
- resolve_static_call(info, resolved_klass, name, signature, current_klass, check_access, false, THREAD);
+ resolve_static_call(info, link_info, /*initialize_class*/false, THREAD);
if (HAS_PENDING_EXCEPTION) {
CLEAR_PENDING_EXCEPTION;
return methodHandle();
@@ -1467,15 +1425,10 @@
return info.selected_method();
}
-methodHandle LinkResolver::resolve_special_call_or_null(
- KlassHandle resolved_klass,
- Symbol* name,
- Symbol* signature,
- KlassHandle current_klass,
- bool check_access) {
+methodHandle LinkResolver::resolve_special_call_or_null(const LinkInfo& link_info) {
EXCEPTION_MARK;
CallInfo info;
- resolve_special_call(info, resolved_klass, name, signature, current_klass, check_access, THREAD);
+ resolve_special_call(info, link_info, THREAD);
if (HAS_PENDING_EXCEPTION) {
CLEAR_PENDING_EXCEPTION;
return methodHandle();
@@ -1500,35 +1453,15 @@
return;
}
-void LinkResolver::resolve_pool(KlassHandle& resolved_klass, Symbol*& method_name, Symbol*& method_signature,
- KlassHandle& current_klass, constantPoolHandle pool, int index, TRAPS) {
- // resolve klass
- resolve_klass(resolved_klass, pool, index, CHECK);
-
- // Get name, signature, and static klass
- method_name = pool->name_ref_at(index);
- method_signature = pool->signature_ref_at(index);
- current_klass = KlassHandle(THREAD, pool->pool_holder());
-}
-
-
void LinkResolver::resolve_invokestatic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) {
- KlassHandle resolved_klass;
- Symbol* method_name = NULL;
- Symbol* method_signature = NULL;
- KlassHandle current_klass;
- resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
- resolve_static_call(result, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
+ LinkInfo link_info(pool, index, CHECK);
+ resolve_static_call(result, link_info, /*initialize_class*/true, CHECK);
}
void LinkResolver::resolve_invokespecial(CallInfo& result, constantPoolHandle pool, int index, TRAPS) {
- KlassHandle resolved_klass;
- Symbol* method_name = NULL;
- Symbol* method_signature = NULL;
- KlassHandle current_klass;
- resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
- resolve_special_call(result, resolved_klass, method_name, method_signature, current_klass, true, CHECK);
+ LinkInfo link_info(pool, index, CHECK);
+ resolve_special_call(result, link_info, CHECK);
}
@@ -1536,54 +1469,40 @@
constantPoolHandle pool, int index,
TRAPS) {
- KlassHandle resolved_klass;
- Symbol* method_name = NULL;
- Symbol* method_signature = NULL;
- KlassHandle current_klass;
- resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
+ LinkInfo link_info(pool, index, CHECK);
KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass());
- resolve_virtual_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
+ resolve_virtual_call(result, recv, recvrKlass, link_info, /*check_null_or_abstract*/true, CHECK);
}
void LinkResolver::resolve_invokeinterface(CallInfo& result, Handle recv, constantPoolHandle pool, int index, TRAPS) {
- KlassHandle resolved_klass;
- Symbol* method_name = NULL;
- Symbol* method_signature = NULL;
- KlassHandle current_klass;
- resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
+ LinkInfo link_info(pool, index, CHECK);
KlassHandle recvrKlass (THREAD, recv.is_null() ? (Klass*)NULL : recv->klass());
- resolve_interface_call(result, recv, recvrKlass, resolved_klass, method_name, method_signature, current_klass, true, true, CHECK);
+ resolve_interface_call(result, recv, recvrKlass, link_info, true, CHECK);
}
void LinkResolver::resolve_invokehandle(CallInfo& result, constantPoolHandle pool, int index, TRAPS) {
// This guy is reached from InterpreterRuntime::resolve_invokehandle.
- KlassHandle resolved_klass;
- Symbol* method_name = NULL;
- Symbol* method_signature = NULL;
- KlassHandle current_klass;
- resolve_pool(resolved_klass, method_name, method_signature, current_klass, pool, index, CHECK);
+ LinkInfo link_info(pool, index, CHECK);
if (TraceMethodHandles) {
ResourceMark rm(THREAD);
- tty->print_cr("resolve_invokehandle %s %s", method_name->as_C_string(), method_signature->as_C_string());
+ tty->print_cr("resolve_invokehandle %s %s", link_info.name()->as_C_string(),
+ link_info.signature()->as_C_string());
}
- resolve_handle_call(result, resolved_klass, method_name, method_signature, current_klass, CHECK);
+ resolve_handle_call(result, link_info, CHECK);
}
-void LinkResolver::resolve_handle_call(CallInfo& result, KlassHandle resolved_klass,
- Symbol* method_name, Symbol* method_signature,
- KlassHandle current_klass,
+void LinkResolver::resolve_handle_call(CallInfo& result,
+ const LinkInfo& link_info,
TRAPS) {
// JSR 292: this must be an implicitly generated method MethodHandle.invokeExact(*...) or similar
- assert(resolved_klass() == SystemDictionary::MethodHandle_klass(), "");
- assert(MethodHandles::is_signature_polymorphic_name(method_name), "");
- methodHandle resolved_method;
+ assert(link_info.resolved_klass()() == SystemDictionary::MethodHandle_klass(), "");
+ assert(MethodHandles::is_signature_polymorphic_name(link_info.name()), "");
Handle resolved_appendix;
Handle resolved_method_type;
- lookup_polymorphic_method(resolved_method, resolved_klass,
- method_name, method_signature,
- current_klass, &resolved_appendix, &resolved_method_type, CHECK);
+ methodHandle resolved_method = lookup_polymorphic_method(link_info,
+ &resolved_appendix, &resolved_method_type, CHECK);
result.set_handle(resolved_method, resolved_appendix, resolved_method_type, CHECK);
}
@@ -1609,7 +1528,6 @@
}
void LinkResolver::resolve_invokedynamic(CallInfo& result, constantPoolHandle pool, int index, TRAPS) {
- //resolve_pool(<resolved_klass>, method_name, method_signature, current_klass, pool, index, CHECK);
Symbol* method_name = pool->name_ref_at(index);
Symbol* method_signature = pool->signature_ref_at(index);
KlassHandle current_klass = KlassHandle(THREAD, pool->pool_holder());
@@ -1667,19 +1585,27 @@
wrap_invokedynamic_exception(CHECK);
}
-//------------------------------------------------------------------------------------------------------------------------
#ifndef PRODUCT
-
-void CallInfo::print() {
+void LinkResolver::trace_method_resolution(const char* prefix,
+ KlassHandle klass,
+ KlassHandle resolved_klass,
+ const methodHandle& method) {
ResourceMark rm;
- const char* kindstr = "unknown";
- switch (_call_kind) {
- case direct_call: kindstr = "direct"; break;
- case vtable_call: kindstr = "vtable"; break;
- case itable_call: kindstr = "itable"; break;
+ tty->print("%s%s, compile-time-class:%s, method:%s, method_holder:%s, access_flags: ",
+ prefix,
+ (klass.is_null() ? "<NULL>" : klass->internal_name()),
+ (resolved_klass.is_null() ? "<NULL>" : resolved_klass->internal_name()),
+ Method::name_and_sig_as_C_string(resolved_klass(),
+ method->name(),
+ method->signature()),
+ method->method_holder()->internal_name()
+ );
+ method->access_flags().print_on(tty);
+ if (method->is_default_method()) {
+ tty->print("default ");
}
- tty->print_cr("Call %s@%d %s", kindstr, _call_index,
- _resolved_method.is_null() ? "(none)" : _resolved_method->name_and_sig_as_C_string());
+ if (method->is_overpass()) {
+ tty->print("overpass ");
+ }
}
-
-#endif
+#endif // PRODUCT