Mercurial > hg > truffle
diff src/share/vm/classfile/systemDictionary.cpp @ 2460:ed69575596ac
6981791: remove experimental code for JSR 292
Reviewed-by: twisti
author | jrose |
---|---|
date | Thu, 07 Apr 2011 17:02:30 -0700 |
parents | 38fea01eb669 |
children | 0654ee04b214 8ce625481709 |
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--- a/src/share/vm/classfile/systemDictionary.cpp Wed Apr 06 17:32:09 2011 -0700 +++ b/src/share/vm/classfile/systemDictionary.cpp Thu Apr 07 17:02:30 2011 -0700 @@ -1887,99 +1887,27 @@ 0 }; -Symbol* SystemDictionary::find_backup_symbol(Symbol* symbol, - const char* from_prefix, - const char* to_prefix) { - assert(AllowTransitionalJSR292, ""); // delete this subroutine - Symbol* backup_symbol = NULL; - size_t from_len = strlen(from_prefix); - if (strncmp((const char*) symbol->base(), from_prefix, from_len) != 0) - return NULL; - char buf[100]; - size_t to_len = strlen(to_prefix); - size_t tail_len = symbol->utf8_length() - from_len; - size_t new_len = to_len + tail_len; - guarantee(new_len < sizeof(buf), "buf too small"); - memcpy(buf, to_prefix, to_len); - memcpy(buf + to_len, symbol->base() + from_len, tail_len); - buf[new_len] = '\0'; - vmSymbols::SID backup_sid = vmSymbols::find_sid(buf); - if (backup_sid != vmSymbols::NO_SID) { - backup_symbol = vmSymbols::symbol_at(backup_sid); - } - return backup_symbol; -} - -Symbol* SystemDictionary::find_backup_class_name(Symbol* symbol) { - assert(AllowTransitionalJSR292, ""); // delete this subroutine - if (symbol == NULL) return NULL; - Symbol* backup_symbol = find_backup_symbol(symbol, "java/lang/invoke/", "java/dyn/"); // AllowTransitionalJSR292 ONLY - if (backup_symbol == NULL) - backup_symbol = find_backup_symbol(symbol, "java/dyn/", "sun/dyn/"); // AllowTransitionalJSR292 ONLY - return backup_symbol; -} - -Symbol* SystemDictionary::find_backup_signature(Symbol* symbol) { - assert(AllowTransitionalJSR292, ""); // delete this subroutine - if (symbol == NULL) return NULL; - return find_backup_symbol(symbol, "Ljava/lang/invoke/", "Ljava/dyn/"); -} - bool SystemDictionary::initialize_wk_klass(WKID id, int init_opt, TRAPS) { assert(id >= (int)FIRST_WKID && id < (int)WKID_LIMIT, "oob"); int info = wk_init_info[id - FIRST_WKID]; int sid = (info >> CEIL_LG_OPTION_LIMIT); Symbol* symbol = vmSymbols::symbol_at((vmSymbols::SID)sid); klassOop* klassp = &_well_known_klasses[id]; - bool pre_load = (init_opt < SystemDictionary::Opt); - bool try_load = true; + bool must_load = (init_opt < SystemDictionary::Opt); + bool try_load = true; if (init_opt == SystemDictionary::Opt_Kernel) { #ifndef KERNEL try_load = false; #endif //KERNEL } - Symbol* backup_symbol = NULL; // symbol to try if the current symbol fails - if (init_opt == SystemDictionary::Pre_JSR292) { - if (!EnableInvokeDynamic) try_load = false; // do not bother to load such classes - if (AllowTransitionalJSR292) { - backup_symbol = find_backup_class_name(symbol); - if (try_load && PreferTransitionalJSR292) { - while (backup_symbol != NULL) { - (*klassp) = resolve_or_null(backup_symbol, CHECK_0); // try backup early - if (TraceMethodHandles) { - ResourceMark rm; - tty->print_cr("MethodHandles: try backup first for %s => %s (%s)", - symbol->as_C_string(), backup_symbol->as_C_string(), - ((*klassp) == NULL) ? "no such class" : "backup load succeeded"); - } - if ((*klassp) != NULL) return true; - backup_symbol = find_backup_class_name(backup_symbol); // find next backup - } - } - } - } - if ((*klassp) != NULL) return true; - if (!try_load) return false; - while (symbol != NULL) { - bool must_load = (pre_load && (backup_symbol == NULL)); + if ((*klassp) == NULL && try_load) { if (must_load) { (*klassp) = resolve_or_fail(symbol, true, CHECK_0); // load required class } else { (*klassp) = resolve_or_null(symbol, CHECK_0); // load optional klass } - if ((*klassp) != NULL) return true; - // Go around again. Example of long backup sequence: - // java.lang.invoke.MemberName, java.dyn.MemberName, sun.dyn.MemberName, ONLY if AllowTransitionalJSR292 - if (TraceMethodHandles && (backup_symbol != NULL)) { - ResourceMark rm; - tty->print_cr("MethodHandles: backup for %s => %s", - symbol->as_C_string(), backup_symbol->as_C_string()); - } - symbol = backup_symbol; - if (AllowTransitionalJSR292) - backup_symbol = find_backup_class_name(symbol); } - return false; + return ((*klassp) != NULL); } void SystemDictionary::initialize_wk_klasses_until(WKID limit_id, WKID &start_id, TRAPS) { @@ -2409,9 +2337,7 @@ // 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 - bool for_invokeGeneric = (name_id == vmSymbols::VM_SYMBOL_ENUM_NAME(invokeGeneric_name)); - if (AllowInvokeForInvokeGeneric && name_id == vmSymbols::VM_SYMBOL_ENUM_NAME(invoke_name)) - for_invokeGeneric = true; + bool for_invokeGeneric = (name_id != vmSymbols::VM_SYMBOL_ENUM_NAME(invokeExact_name)); bool found_on_bcp = false; Handle mt = find_method_handle_type(signature, accessing_klass, for_invokeGeneric, @@ -2498,14 +2424,10 @@ JavaCallArguments args(Handle(THREAD, rt())); args.push_oop(pts()); JavaValue result(T_OBJECT); - Symbol* findMethodHandleType_signature = vmSymbols::findMethodHandleType_signature(); - if (AllowTransitionalJSR292 && SystemDictionaryHandles::MethodType_klass()->name() == vmSymbols::java_dyn_MethodType()) { - findMethodHandleType_signature = vmSymbols::findMethodHandleType_TRANS_signature(); - } JavaCalls::call_static(&result, SystemDictionary::MethodHandleNatives_klass(), vmSymbols::findMethodHandleType_name(), - findMethodHandleType_signature, + vmSymbols::findMethodHandleType_signature(), &args, CHECK_(empty)); Handle method_type(THREAD, (oop) result.get_jobject()); @@ -2513,14 +2435,10 @@ // call java.lang.invoke.MethodHandleNatives::notifyGenericMethodType(MethodType) -> void JavaCallArguments args(Handle(THREAD, method_type())); JavaValue no_result(T_VOID); - Symbol* notifyGenericMethodType_signature = vmSymbols::notifyGenericMethodType_signature(); - if (AllowTransitionalJSR292 && SystemDictionaryHandles::MethodType_klass()->name() == vmSymbols::java_dyn_MethodType()) { - notifyGenericMethodType_signature = vmSymbols::notifyGenericMethodType_TRANS_signature(); - } JavaCalls::call_static(&no_result, SystemDictionary::MethodHandleNatives_klass(), vmSymbols::notifyGenericMethodType_name(), - notifyGenericMethodType_signature, + vmSymbols::notifyGenericMethodType_signature(), &args, THREAD); if (HAS_PENDING_EXCEPTION) { // If the notification fails, just kill it. @@ -2569,14 +2487,10 @@ args.push_oop(name()); args.push_oop(type()); JavaValue result(T_OBJECT); - Symbol* linkMethodHandleConstant_signature = vmSymbols::linkMethodHandleConstant_signature(); - if (AllowTransitionalJSR292 && SystemDictionaryHandles::MethodHandle_klass()->name() == vmSymbols::java_dyn_MethodHandle()) { - linkMethodHandleConstant_signature = vmSymbols::linkMethodHandleConstant_TRANS_signature(); - } JavaCalls::call_static(&result, SystemDictionary::MethodHandleNatives_klass(), vmSymbols::linkMethodHandleConstant_name(), - linkMethodHandleConstant_signature, + vmSymbols::linkMethodHandleConstant_signature(), &args, CHECK_(empty)); return Handle(THREAD, (oop) result.get_jobject()); } @@ -2607,17 +2521,10 @@ args.push_oop(caller_mname()); args.push_int(caller_bci); JavaValue result(T_OBJECT); - Symbol* makeDynamicCallSite_signature = vmSymbols::makeDynamicCallSite_signature(); - if (AllowTransitionalJSR292 && SystemDictionaryHandles::MethodHandleNatives_klass()->name() == vmSymbols::sun_dyn_MethodHandleNatives()) { - makeDynamicCallSite_signature = vmSymbols::makeDynamicCallSite_TRANS_signature(); - } - if (AllowTransitionalJSR292 && SystemDictionaryHandles::MethodHandleNatives_klass()->name() == vmSymbols::java_dyn_MethodHandleNatives()) { - makeDynamicCallSite_signature = vmSymbols::makeDynamicCallSite_TRANS2_signature(); - } JavaCalls::call_static(&result, SystemDictionary::MethodHandleNatives_klass(), vmSymbols::makeDynamicCallSite_name(), - makeDynamicCallSite_signature, + vmSymbols::makeDynamicCallSite_signature(), &args, CHECK_(empty)); oop call_site_oop = (oop) result.get_jobject(); assert(call_site_oop->is_oop() @@ -2698,28 +2605,10 @@ argument_info_result = argument_info; // return argument_info to caller return bsm; } - // else null BSM; fall through - } else if (tag.is_name_and_type()) { - // JSR 292 EDR does not have JVM_CONSTANT_InvokeDynamic - // a bare name&type defaults its BSM to null, so fall through... } else { ShouldNotReachHere(); // verifier does not allow this } - // Fall through to pick up the per-class bootstrap method. - // This mechanism may go away in the PFD. - assert(AllowTransitionalJSR292, "else the verifier should have stopped us already"); - argument_info_result = empty; // return no argument_info to caller - oop bsm_oop = instanceKlass::cast(caller_method->method_holder())->bootstrap_method(); - if (bsm_oop != NULL) { - if (TraceMethodHandles) { - tty->print_cr("bootstrap method for "PTR_FORMAT" registered as "PTR_FORMAT":", - (intptr_t) caller_method(), (intptr_t) bsm_oop); - } - assert(bsm_oop->is_oop(), "must be sane"); - return Handle(THREAD, bsm_oop); - } - return empty; }