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6939134: JSR 292 adjustments to method handle invocation

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Split MethodHandle.invoke into invokeExact and invokeGeneric; also clean up JVM-to-Java interfaces

Reviewed-by: twisti
This commit is contained in:
John R Rose 2010-05-01 02:42:18 -07:00
parent 0211f9703a
commit 4eb75c2df3
29 changed files with 413 additions and 233 deletions
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117
hotspot/src/share/vm/classfile/systemDictionary.cpp
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@ -2341,7 +2341,8 @@ char* SystemDictionary::check_signature_loaders(symbolHandle signature,
}
methodOop SystemDictionary::find_method_handle_invoke(symbolHandle signature,
methodOop SystemDictionary::find_method_handle_invoke(symbolHandle name,
symbolHandle signature,
Handle class_loader,
Handle protection_domain,
TRAPS) {
@ -2352,26 +2353,28 @@ methodOop SystemDictionary::find_method_handle_invoke(symbolHandle signature,
// create this side table lazily
_invoke_method_table = new SymbolPropertyTable(_invoke_method_size);
}
unsigned int hash = invoke_method_table()->compute_hash(signature);
vmSymbols::SID name_id = vmSymbols::find_sid(name());
assert(name_id != vmSymbols::NO_SID, "must be a known name");
unsigned int hash = invoke_method_table()->compute_hash(signature, name_id);
int index = invoke_method_table()->hash_to_index(hash);
SymbolPropertyEntry* spe = invoke_method_table()->find_entry(index, hash, signature);
SymbolPropertyEntry* spe = invoke_method_table()->find_entry(index, hash, signature, name_id);
if (spe == NULL || spe->property_oop() == NULL) {
// Must create lots of stuff here, but outside of the SystemDictionary lock.
if (THREAD->is_Compiler_thread())
return NULL; // do not attempt from within compiler
Handle mt = compute_method_handle_type(signature(),
class_loader, protection_domain,
CHECK_NULL);
Handle mt = find_method_handle_type(signature(),
class_loader, protection_domain,
CHECK_NULL);
KlassHandle mh_klass = SystemDictionaryHandles::MethodHandle_klass();
methodHandle m = methodOopDesc::make_invoke_method(mh_klass, signature,
methodHandle m = methodOopDesc::make_invoke_method(mh_klass, name, signature,
mt, CHECK_NULL);
// Now grab the lock. We might have to throw away the new method,
// if a racing thread has managed to install one at the same time.
{
MutexLocker ml(SystemDictionary_lock, Thread::current());
spe = invoke_method_table()->find_entry(index, hash, signature);
spe = invoke_method_table()->find_entry(index, hash, signature, name_id);
if (spe == NULL)
spe = invoke_method_table()->add_entry(index, hash, signature);
spe = invoke_method_table()->add_entry(index, hash, signature, name_id);
if (spe->property_oop() == NULL)
spe->set_property_oop(m());
}
@ -2385,10 +2388,10 @@ methodOop SystemDictionary::find_method_handle_invoke(symbolHandle signature,
// signature, as interpreted relative to the given class loader.
// Because of class loader constraints, all method handle usage must be
// consistent with this loader.
Handle SystemDictionary::compute_method_handle_type(symbolHandle signature,
Handle class_loader,
Handle protection_domain,
TRAPS) {
Handle SystemDictionary::find_method_handle_type(symbolHandle signature,
Handle class_loader,
Handle protection_domain,
TRAPS) {
Handle empty;
int npts = ArgumentCount(signature()).size();
objArrayHandle pts = oopFactory::new_objArray(SystemDictionary::Class_klass(), npts, CHECK_(empty));
@ -2413,16 +2416,14 @@ Handle SystemDictionary::compute_method_handle_type(symbolHandle signature,
}
assert(arg == npts, "");
// call MethodType java.dyn.MethodType::makeImpl(Class rt, Class[] pts, false, true)
bool varargs = false, trusted = true;
// call sun.dyn.MethodHandleNatives::findMethodType(Class rt, Class[] pts) -> MethodType
JavaCallArguments args(Handle(THREAD, rt()));
args.push_oop(pts());
args.push_int(false);
args.push_int(trusted);
JavaValue result(T_OBJECT);
JavaCalls::call_static(&result,
SystemDictionary::MethodType_klass(),
vmSymbols::makeImpl_name(), vmSymbols::makeImpl_signature(),
SystemDictionary::MethodHandleNatives_klass(),
vmSymbols::findMethodHandleType_name(),
vmSymbols::findMethodHandleType_signature(),
&args, CHECK_(empty));
return Handle(THREAD, (oop) result.get_jobject());
}
@ -2430,29 +2431,34 @@ Handle SystemDictionary::compute_method_handle_type(symbolHandle signature,
// Ask Java code to find or construct a java.dyn.CallSite for the given
// name and signature, as interpreted relative to the given class loader.
Handle SystemDictionary::make_dynamic_call_site(KlassHandle caller,
int caller_method_idnum,
int caller_bci,
Handle SystemDictionary::make_dynamic_call_site(Handle bootstrap_method,
symbolHandle name,
methodHandle mh_invdyn,
methodHandle signature_invoker,
Handle info,
methodHandle caller_method,
int caller_bci,
TRAPS) {
Handle empty;
// call java.dyn.CallSite::makeSite(caller, name, mtype, cmid, cbci)
Handle caller_mname = MethodHandles::new_MemberName(CHECK_(empty));
MethodHandles::init_MemberName(caller_mname(), caller_method());
// call sun.dyn.MethodHandleNatives::makeDynamicCallSite(bootm, name, mtype, info, caller_mname, caller_pos)
oop name_str_oop = StringTable::intern(name(), CHECK_(empty)); // not a handle!
JavaCallArguments args(Handle(THREAD, caller->java_mirror()));
JavaCallArguments args(Handle(THREAD, bootstrap_method()));
args.push_oop(name_str_oop);
args.push_oop(mh_invdyn->method_handle_type());
args.push_int(caller_method_idnum);
args.push_oop(signature_invoker->method_handle_type());
args.push_oop(info());
args.push_oop(caller_mname());
args.push_int(caller_bci);
JavaValue result(T_OBJECT);
JavaCalls::call_static(&result,
SystemDictionary::CallSite_klass(),
vmSymbols::makeSite_name(), vmSymbols::makeSite_signature(),
SystemDictionary::MethodHandleNatives_klass(),
vmSymbols::makeDynamicCallSite_name(),
vmSymbols::makeDynamicCallSite_signature(),
&args, CHECK_(empty));
oop call_site_oop = (oop) result.get_jobject();
assert(call_site_oop->is_oop()
/*&& java_dyn_CallSite::is_instance(call_site_oop)*/, "must be sane");
java_dyn_CallSite::set_vmmethod(call_site_oop, mh_invdyn());
if (TraceMethodHandles) {
#ifndef PRODUCT
tty->print_cr("Linked invokedynamic bci=%d site="INTPTR_FORMAT":", caller_bci, call_site_oop);
@ -2463,9 +2469,7 @@ Handle SystemDictionary::make_dynamic_call_site(KlassHandle caller,
return call_site_oop;
}
Handle SystemDictionary::find_bootstrap_method(KlassHandle caller,
KlassHandle search_bootstrap_klass,
TRAPS) {
Handle SystemDictionary::find_bootstrap_method(KlassHandle caller, TRAPS) {
Handle empty;
if (!caller->oop_is_instance()) return empty;
@ -2476,57 +2480,12 @@ Handle SystemDictionary::find_bootstrap_method(KlassHandle caller,
if (TraceMethodHandles) {
tty->print_cr("bootstrap method for "PTR_FORMAT" cached as "PTR_FORMAT":", ik(), boot_method_oop);
}
NOT_PRODUCT(if (!boot_method_oop->is_oop()) { tty->print_cr("*** boot MH of "PTR_FORMAT" = "PTR_FORMAT, ik(), boot_method_oop); ik()->print(); });
assert(boot_method_oop->is_oop()
&& java_dyn_MethodHandle::is_instance(boot_method_oop), "must be sane");
return Handle(THREAD, boot_method_oop);
}
boot_method_oop = NULL; // GC safety
// call java.dyn.Linkage::findBootstrapMethod(caller, sbk)
JavaCallArguments args(Handle(THREAD, ik->java_mirror()));
if (search_bootstrap_klass.is_null())
args.push_oop(Handle());
else
args.push_oop(search_bootstrap_klass->java_mirror());
JavaValue result(T_OBJECT);
JavaCalls::call_static(&result,
SystemDictionary::Linkage_klass(),
vmSymbols::findBootstrapMethod_name(),
vmSymbols::findBootstrapMethod_signature(),
&args, CHECK_(empty));
boot_method_oop = (oop) result.get_jobject();
if (boot_method_oop != NULL) {
if (TraceMethodHandles) {
#ifndef PRODUCT
tty->print_cr("--------");
tty->print_cr("bootstrap method for "PTR_FORMAT" computed as "PTR_FORMAT":", ik(), boot_method_oop);
ik()->print();
boot_method_oop->print();
tty->print_cr("========");
#endif //PRODUCT
}
assert(boot_method_oop->is_oop()
&& java_dyn_MethodHandle::is_instance(boot_method_oop), "must be sane");
// probably no race conditions, but let's be careful:
if (Atomic::cmpxchg_ptr(boot_method_oop, ik->adr_bootstrap_method(), NULL) == NULL)
ik->set_bootstrap_method(boot_method_oop);
else
boot_method_oop = ik->bootstrap_method();
} else {
if (TraceMethodHandles) {
#ifndef PRODUCT
tty->print_cr("--------");
tty->print_cr("bootstrap method for "PTR_FORMAT" computed as NULL:", ik());
ik()->print();
tty->print_cr("========");
#endif //PRODUCT
}
boot_method_oop = ik->bootstrap_method();
}
return Handle(THREAD, boot_method_oop);
return empty;
}
// Since the identity hash code for symbols changes when the symbols are