Mercurial > hg > truffle
view src/share/vm/jvmci/jvmciRuntime.cpp @ 21579:6fffb62ccb32
Fix project dependency
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
---|---|
date | Thu, 28 May 2015 21:14:08 -0700 |
parents | 2270a708ef23 |
children | 59c3f921e454 |
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/* * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ #include "precompiled.hpp" #include "asm/codeBuffer.hpp" #include "compiler/compileBroker.hpp" #include "compiler/disassembler.hpp" #include "jvmci/jvmciRuntime.hpp" #include "jvmci/jvmciCompilerToVM.hpp" #include "jvmci/jvmciCompiler.hpp" #include "jvmci/jvmciJavaAccess.hpp" #include "jvmci/jvmciEnv.hpp" #include "memory/oopFactory.hpp" #include "prims/jvm.h" #include "runtime/biasedLocking.hpp" #include "runtime/interfaceSupport.hpp" #include "runtime/arguments.hpp" #include "runtime/reflection.hpp" #include "utilities/debug.hpp" #include "utilities/defaultStream.hpp" jobject JVMCIRuntime::_HotSpotJVMCIRuntime_instance = NULL; bool JVMCIRuntime::_HotSpotJVMCIRuntime_initialized = false; bool JVMCIRuntime::_shutdown_called = false; void JVMCIRuntime::initialize_natives(JNIEnv *env, jclass c2vmClass) { uintptr_t heap_end = (uintptr_t) Universe::heap()->reserved_region().end(); uintptr_t allocation_end = heap_end + ((uintptr_t)16) * 1024 * 1024 * 1024; AMD64_ONLY(guarantee(heap_end < allocation_end, "heap end too close to end of address space (might lead to erroneous TLAB allocations)")); NOT_LP64(error("check TLAB allocation code for address space conflicts")); ensure_jvmci_class_loader_is_initialized(); JavaThread* THREAD = JavaThread::current(); { ThreadToNativeFromVM trans(THREAD); ResourceMark rm; HandleMark hm; jvmci_compute_offsets(); // Ensure _non_oop_bits is initialized Universe::non_oop_word(); env->RegisterNatives(c2vmClass, CompilerToVM_methods, CompilerToVM_methods_count()); } if (HAS_PENDING_EXCEPTION) { abort_on_pending_exception(PENDING_EXCEPTION, "Could not register natives"); } } BufferBlob* JVMCIRuntime::initialize_buffer_blob() { JavaThread* THREAD = JavaThread::current(); BufferBlob* buffer_blob = THREAD->get_buffer_blob(); if (buffer_blob == NULL) { buffer_blob = BufferBlob::create("JVMCI thread-local CodeBuffer", JVMCINMethodSizeLimit); if (buffer_blob != NULL) { THREAD->set_buffer_blob(buffer_blob); } } return buffer_blob; } BasicType JVMCIRuntime::kindToBasicType(jchar ch) { switch(ch) { case 'z': return T_BOOLEAN; case 'b': return T_BYTE; case 's': return T_SHORT; case 'c': return T_CHAR; case 'i': return T_INT; case 'f': return T_FLOAT; case 'j': return T_LONG; case 'd': return T_DOUBLE; case 'a': return T_OBJECT; case '-': return T_ILLEGAL; default: fatal(err_msg("unexpected Kind: %c", ch)); break; } return T_ILLEGAL; } // Simple helper to see if the caller of a runtime stub which // entered the VM has been deoptimized static bool caller_is_deopted() { JavaThread* thread = JavaThread::current(); RegisterMap reg_map(thread, false); frame runtime_frame = thread->last_frame(); frame caller_frame = runtime_frame.sender(®_map); assert(caller_frame.is_compiled_frame(), "must be compiled"); return caller_frame.is_deoptimized_frame(); } // Stress deoptimization static void deopt_caller() { if ( !caller_is_deopted()) { JavaThread* thread = JavaThread::current(); RegisterMap reg_map(thread, false); frame runtime_frame = thread->last_frame(); frame caller_frame = runtime_frame.sender(®_map); Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint); assert(caller_is_deopted(), "Must be deoptimized"); } } JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_instance(JavaThread* thread, Klass* klass)) JRT_BLOCK; assert(klass->is_klass(), "not a class"); instanceKlassHandle h(thread, klass); h->check_valid_for_instantiation(true, CHECK); // make sure klass is initialized h->initialize(CHECK); // allocate instance and return via TLS oop obj = h->allocate_instance(CHECK); thread->set_vm_result(obj); JRT_BLOCK_END; if (JVMCIDeferredInitBarriers) { new_store_pre_barrier(thread); } JRT_END JRT_BLOCK_ENTRY(void, JVMCIRuntime::new_array(JavaThread* thread, Klass* array_klass, jint length)) JRT_BLOCK; // Note: no handle for klass needed since they are not used // anymore after new_objArray() and no GC can happen before. // (This may have to change if this code changes!) assert(array_klass->is_klass(), "not a class"); oop obj; if (array_klass->oop_is_typeArray()) { BasicType elt_type = TypeArrayKlass::cast(array_klass)->element_type(); obj = oopFactory::new_typeArray(elt_type, length, CHECK); } else { Klass* elem_klass = ObjArrayKlass::cast(array_klass)->element_klass(); obj = oopFactory::new_objArray(elem_klass, length, CHECK); } thread->set_vm_result(obj); // This is pretty rare but this runtime patch is stressful to deoptimization // if we deoptimize here so force a deopt to stress the path. if (DeoptimizeALot) { static int deopts = 0; // Alternate between deoptimizing and raising an error (which will also cause a deopt) if (deopts++ % 2 == 0) { ResourceMark rm(THREAD); THROW(vmSymbols::java_lang_OutOfMemoryError()); } else { deopt_caller(); } } JRT_BLOCK_END; if (JVMCIDeferredInitBarriers) { new_store_pre_barrier(thread); } JRT_END void JVMCIRuntime::new_store_pre_barrier(JavaThread* thread) { // After any safepoint, just before going back to compiled code, // we inform the GC that we will be doing initializing writes to // this object in the future without emitting card-marks, so // GC may take any compensating steps. // NOTE: Keep this code consistent with GraphKit::store_barrier. oop new_obj = thread->vm_result(); if (new_obj == NULL) return; assert(Universe::heap()->can_elide_tlab_store_barriers(), "compiler must check this first"); // GC may decide to give back a safer copy of new_obj. new_obj = Universe::heap()->new_store_pre_barrier(thread, new_obj); thread->set_vm_result(new_obj); } JRT_ENTRY(void, JVMCIRuntime::new_multi_array(JavaThread* thread, Klass* klass, int rank, jint* dims)) assert(klass->is_klass(), "not a class"); assert(rank >= 1, "rank must be nonzero"); oop obj = ArrayKlass::cast(klass)->multi_allocate(rank, dims, CHECK); thread->set_vm_result(obj); JRT_END JRT_ENTRY(void, JVMCIRuntime::dynamic_new_array(JavaThread* thread, oopDesc* element_mirror, jint length)) oop obj = Reflection::reflect_new_array(element_mirror, length, CHECK); thread->set_vm_result(obj); JRT_END JRT_ENTRY(void, JVMCIRuntime::dynamic_new_instance(JavaThread* thread, oopDesc* type_mirror)) instanceKlassHandle klass(THREAD, java_lang_Class::as_Klass(type_mirror)); if (klass == NULL) { ResourceMark rm(THREAD); THROW(vmSymbols::java_lang_InstantiationException()); } // Create new instance (the receiver) klass->check_valid_for_instantiation(false, CHECK); // Make sure klass gets initialized klass->initialize(CHECK); oop obj = klass->allocate_instance(CHECK); thread->set_vm_result(obj); JRT_END extern void vm_exit(int code); // Enter this method from compiled code handler below. This is where we transition // to VM mode. This is done as a helper routine so that the method called directly // from compiled code does not have to transition to VM. This allows the entry // method to see if the nmethod that we have just looked up a handler for has // been deoptimized while we were in the vm. This simplifies the assembly code // cpu directories. // // We are entering here from exception stub (via the entry method below) // If there is a compiled exception handler in this method, we will continue there; // otherwise we will unwind the stack and continue at the caller of top frame method // Note: we enter in Java using a special JRT wrapper. This wrapper allows us to // control the area where we can allow a safepoint. After we exit the safepoint area we can // check to see if the handler we are going to return is now in a nmethod that has // been deoptimized. If that is the case we return the deopt blob // unpack_with_exception entry instead. This makes life for the exception blob easier // because making that same check and diverting is painful from assembly language. JRT_ENTRY_NO_ASYNC(static address, exception_handler_for_pc_helper(JavaThread* thread, oopDesc* ex, address pc, nmethod*& nm)) // Reset method handle flag. thread->set_is_method_handle_return(false); Handle exception(thread, ex); nm = CodeCache::find_nmethod(pc); assert(nm != NULL, "this is not an nmethod"); // Adjust the pc as needed/ if (nm->is_deopt_pc(pc)) { RegisterMap map(thread, false); frame exception_frame = thread->last_frame().sender(&map); // if the frame isn't deopted then pc must not correspond to the caller of last_frame assert(exception_frame.is_deoptimized_frame(), "must be deopted"); pc = exception_frame.pc(); } #ifdef ASSERT assert(exception.not_null(), "NULL exceptions should be handled by throw_exception"); assert(exception->is_oop(), "just checking"); // Check that exception is a subclass of Throwable, otherwise we have a VerifyError if (!(exception->is_a(SystemDictionary::Throwable_klass()))) { if (ExitVMOnVerifyError) vm_exit(-1); ShouldNotReachHere(); } #endif // Check the stack guard pages and reenable them if necessary and there is // enough space on the stack to do so. Use fast exceptions only if the guard // pages are enabled. bool guard_pages_enabled = thread->stack_yellow_zone_enabled(); if (!guard_pages_enabled) guard_pages_enabled = thread->reguard_stack(); if (JvmtiExport::can_post_on_exceptions()) { // To ensure correct notification of exception catches and throws // we have to deoptimize here. If we attempted to notify the // catches and throws during this exception lookup it's possible // we could deoptimize on the way out of the VM and end back in // the interpreter at the throw site. This would result in double // notifications since the interpreter would also notify about // these same catches and throws as it unwound the frame. RegisterMap reg_map(thread); frame stub_frame = thread->last_frame(); frame caller_frame = stub_frame.sender(®_map); // We don't really want to deoptimize the nmethod itself since we // can actually continue in the exception handler ourselves but I // don't see an easy way to have the desired effect. Deoptimization::deoptimize_frame(thread, caller_frame.id(), Deoptimization::Reason_constraint); assert(caller_is_deopted(), "Must be deoptimized"); return SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); } // ExceptionCache is used only for exceptions at call sites and not for implicit exceptions if (guard_pages_enabled) { address fast_continuation = nm->handler_for_exception_and_pc(exception, pc); if (fast_continuation != NULL) { // Set flag if return address is a method handle call site. thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); return fast_continuation; } } // If the stack guard pages are enabled, check whether there is a handler in // the current method. Otherwise (guard pages disabled), force an unwind and // skip the exception cache update (i.e., just leave continuation==NULL). address continuation = NULL; if (guard_pages_enabled) { // New exception handling mechanism can support inlined methods // with exception handlers since the mappings are from PC to PC // debugging support // tracing if (TraceExceptions) { ttyLocker ttyl; ResourceMark rm; tty->print_cr("Exception <%s> (" INTPTR_FORMAT ") thrown in compiled method <%s> at PC " INTPTR_FORMAT " for thread " INTPTR_FORMAT "", exception->print_value_string(), p2i((address)exception()), nm->method()->print_value_string(), p2i(pc), p2i(thread)); } // for AbortVMOnException flag NOT_PRODUCT(Exceptions::debug_check_abort(exception)); // Clear out the exception oop and pc since looking up an // exception handler can cause class loading, which might throw an // exception and those fields are expected to be clear during // normal bytecode execution. thread->clear_exception_oop_and_pc(); continuation = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, false, false); // If an exception was thrown during exception dispatch, the exception oop may have changed thread->set_exception_oop(exception()); thread->set_exception_pc(pc); // the exception cache is used only by non-implicit exceptions if (continuation != NULL && !SharedRuntime::deopt_blob()->contains(continuation)) { nm->add_handler_for_exception_and_pc(exception, pc, continuation); } } // Set flag if return address is a method handle call site. thread->set_is_method_handle_return(nm->is_method_handle_return(pc)); if (TraceExceptions) { ttyLocker ttyl; ResourceMark rm; tty->print_cr("Thread " PTR_FORMAT " continuing at PC " PTR_FORMAT " for exception thrown at PC " PTR_FORMAT, p2i(thread), p2i(continuation), p2i(pc)); } return continuation; JRT_END // Enter this method from compiled code only if there is a Java exception handler // in the method handling the exception. // We are entering here from exception stub. We don't do a normal VM transition here. // We do it in a helper. This is so we can check to see if the nmethod we have just // searched for an exception handler has been deoptimized in the meantime. address JVMCIRuntime::exception_handler_for_pc(JavaThread* thread) { oop exception = thread->exception_oop(); address pc = thread->exception_pc(); // Still in Java mode DEBUG_ONLY(ResetNoHandleMark rnhm); nmethod* nm = NULL; address continuation = NULL; { // Enter VM mode by calling the helper ResetNoHandleMark rnhm; continuation = exception_handler_for_pc_helper(thread, exception, pc, nm); } // Back in JAVA, use no oops DON'T safepoint // Now check to see if the nmethod we were called from is now deoptimized. // If so we must return to the deopt blob and deoptimize the nmethod if (nm != NULL && caller_is_deopted()) { continuation = SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); } assert(continuation != NULL, "no handler found"); return continuation; } JRT_ENTRY(void, JVMCIRuntime::create_null_exception(JavaThread* thread)) SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_NullPointerException()); thread->set_vm_result(PENDING_EXCEPTION); CLEAR_PENDING_EXCEPTION; JRT_END JRT_ENTRY(void, JVMCIRuntime::create_out_of_bounds_exception(JavaThread* thread, jint index)) char message[jintAsStringSize]; sprintf(message, "%d", index); SharedRuntime::throw_and_post_jvmti_exception(thread, vmSymbols::java_lang_ArrayIndexOutOfBoundsException(), message); thread->set_vm_result(PENDING_EXCEPTION); CLEAR_PENDING_EXCEPTION; JRT_END JRT_ENTRY_NO_ASYNC(void, JVMCIRuntime::monitorenter(JavaThread* thread, oopDesc* obj, BasicLock* lock)) if (TraceJVMCI >= 3) { char type[O_BUFLEN]; obj->klass()->name()->as_C_string(type, O_BUFLEN); markOop mark = obj->mark(); tty->print_cr("%s: entered locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(mark), p2i(lock)); tty->flush(); } #ifdef ASSERT if (PrintBiasedLockingStatistics) { Atomic::inc(BiasedLocking::slow_path_entry_count_addr()); } #endif Handle h_obj(thread, obj); assert(h_obj()->is_oop(), "must be NULL or an object"); if (UseBiasedLocking) { // Retry fast entry if bias is revoked to avoid unnecessary inflation ObjectSynchronizer::fast_enter(h_obj, lock, true, CHECK); } else { if (JVMCIUseFastLocking) { // When using fast locking, the compiled code has already tried the fast case ObjectSynchronizer::slow_enter(h_obj, lock, THREAD); } else { ObjectSynchronizer::fast_enter(h_obj, lock, false, THREAD); } } if (TraceJVMCI >= 3) { tty->print_cr("%s: exiting locking slow with obj=" INTPTR_FORMAT, thread->name(), p2i(obj)); } JRT_END JRT_LEAF(void, JVMCIRuntime::monitorexit(JavaThread* thread, oopDesc* obj, BasicLock* lock)) assert(thread == JavaThread::current(), "threads must correspond"); assert(thread->last_Java_sp(), "last_Java_sp must be set"); // monitorexit is non-blocking (leaf routine) => no exceptions can be thrown EXCEPTION_MARK; #ifdef DEBUG if (!obj->is_oop()) { ResetNoHandleMark rhm; nmethod* method = thread->last_frame().cb()->as_nmethod_or_null(); if (method != NULL) { tty->print_cr("ERROR in monitorexit in method %s wrong obj " INTPTR_FORMAT, method->name(), p2i(obj)); } thread->print_stack_on(tty); assert(false, "invalid lock object pointer dected"); } #endif if (JVMCIUseFastLocking) { // When using fast locking, the compiled code has already tried the fast case ObjectSynchronizer::slow_exit(obj, lock, THREAD); } else { ObjectSynchronizer::fast_exit(obj, lock, THREAD); } if (TraceJVMCI >= 3) { char type[O_BUFLEN]; obj->klass()->name()->as_C_string(type, O_BUFLEN); tty->print_cr("%s: exited locking slow case with obj=" INTPTR_FORMAT ", type=%s, mark=" INTPTR_FORMAT ", lock=" INTPTR_FORMAT, thread->name(), p2i(obj), type, p2i(obj->mark()), p2i(lock)); tty->flush(); } JRT_END JRT_LEAF(void, JVMCIRuntime::log_object(JavaThread* thread, oopDesc* obj, jint flags)) bool string = mask_bits_are_true(flags, LOG_OBJECT_STRING); bool addr = mask_bits_are_true(flags, LOG_OBJECT_ADDRESS); bool newline = mask_bits_are_true(flags, LOG_OBJECT_NEWLINE); if (!string) { if (!addr && obj->is_oop_or_null(true)) { char buf[O_BUFLEN]; tty->print("%s@" INTPTR_FORMAT, obj->klass()->name()->as_C_string(buf, O_BUFLEN), p2i(obj)); } else { tty->print(INTPTR_FORMAT, p2i(obj)); } } else { ResourceMark rm; assert(obj != NULL && java_lang_String::is_instance(obj), "must be"); char *buf = java_lang_String::as_utf8_string(obj); tty->print_raw(buf); } if (newline) { tty->cr(); } JRT_END JRT_LEAF(void, JVMCIRuntime::write_barrier_pre(JavaThread* thread, oopDesc* obj)) thread->satb_mark_queue().enqueue(obj); JRT_END JRT_LEAF(void, JVMCIRuntime::write_barrier_post(JavaThread* thread, void* card_addr)) thread->dirty_card_queue().enqueue(card_addr); JRT_END JRT_LEAF(jboolean, JVMCIRuntime::validate_object(JavaThread* thread, oopDesc* parent, oopDesc* child)) bool ret = true; if(!Universe::heap()->is_in_closed_subset(parent)) { tty->print_cr("Parent Object "INTPTR_FORMAT" not in heap", p2i(parent)); parent->print(); ret=false; } if(!Universe::heap()->is_in_closed_subset(child)) { tty->print_cr("Child Object "INTPTR_FORMAT" not in heap", p2i(child)); child->print(); ret=false; } return (jint)ret; JRT_END JRT_ENTRY(void, JVMCIRuntime::vm_error(JavaThread* thread, jlong where, jlong format, jlong value)) ResourceMark rm; const char *error_msg = where == 0L ? "<internal JVMCI error>" : (char*) (address) where; char *detail_msg = NULL; if (format != 0L) { const char* buf = (char*) (address) format; size_t detail_msg_length = strlen(buf) * 2; detail_msg = (char *) NEW_RESOURCE_ARRAY(u_char, detail_msg_length); jio_snprintf(detail_msg, detail_msg_length, buf, value); } report_vm_error(__FILE__, __LINE__, error_msg, detail_msg); JRT_END JRT_LEAF(oopDesc*, JVMCIRuntime::load_and_clear_exception(JavaThread* thread)) oop exception = thread->exception_oop(); assert(exception != NULL, "npe"); thread->set_exception_oop(NULL); thread->set_exception_pc(0); return exception; JRT_END JRT_LEAF(void, JVMCIRuntime::log_printf(JavaThread* thread, oopDesc* format, jlong v1, jlong v2, jlong v3)) ResourceMark rm; assert(format != NULL && java_lang_String::is_instance(format), "must be"); char *buf = java_lang_String::as_utf8_string(format); tty->print(buf, v1, v2, v3); JRT_END static void decipher(jlong v, bool ignoreZero) { if (v != 0 || !ignoreZero) { void* p = (void *)(address) v; CodeBlob* cb = CodeCache::find_blob(p); if (cb) { if (cb->is_nmethod()) { char buf[O_BUFLEN]; tty->print("%s [" INTPTR_FORMAT "+" JLONG_FORMAT "]", cb->as_nmethod_or_null()->method()->name_and_sig_as_C_string(buf, O_BUFLEN), p2i(cb->code_begin()), (jlong)((address)v - cb->code_begin())); return; } cb->print_value_on(tty); return; } if (Universe::heap()->is_in(p)) { oop obj = oop(p); obj->print_value_on(tty); return; } tty->print(INTPTR_FORMAT " [long: " JLONG_FORMAT ", double %lf, char %c]",p2i((void *)v), (jlong)v, (jdouble)v, (char)v); } } JRT_LEAF(void, JVMCIRuntime::vm_message(jboolean vmError, jlong format, jlong v1, jlong v2, jlong v3)) ResourceMark rm; char *buf = (char*) (address) format; if (vmError) { if (buf != NULL) { fatal(err_msg(buf, v1, v2, v3)); } else { fatal("<anonymous error>"); } } else if (buf != NULL) { tty->print(buf, v1, v2, v3); } else { assert(v2 == 0, "v2 != 0"); assert(v3 == 0, "v3 != 0"); decipher(v1, false); } JRT_END JRT_LEAF(void, JVMCIRuntime::log_primitive(JavaThread* thread, jchar typeChar, jlong value, jboolean newline)) union { jlong l; jdouble d; jfloat f; } uu; uu.l = value; switch (typeChar) { case 'z': tty->print(value == 0 ? "false" : "true"); break; case 'b': tty->print("%d", (jbyte) value); break; case 'c': tty->print("%c", (jchar) value); break; case 's': tty->print("%d", (jshort) value); break; case 'i': tty->print("%d", (jint) value); break; case 'f': tty->print("%f", uu.f); break; case 'j': tty->print(JLONG_FORMAT, value); break; case 'd': tty->print("%lf", uu.d); break; default: assert(false, "unknown typeChar"); break; } if (newline) { tty->cr(); } JRT_END JRT_ENTRY(jint, JVMCIRuntime::identity_hash_code(JavaThread* thread, oopDesc* obj)) return (jint) obj->identity_hash(); JRT_END JRT_ENTRY(jboolean, JVMCIRuntime::thread_is_interrupted(JavaThread* thread, oopDesc* receiver, jboolean clear_interrupted)) // Ensure that the C++ Thread and OSThread structures aren't freed before we operate. // This locking requires thread_in_vm which is why this method cannot be JRT_LEAF. Handle receiverHandle(thread, receiver); MutexLockerEx ml(thread->threadObj() == (void*)receiver ? NULL : Threads_lock); JavaThread* receiverThread = java_lang_Thread::thread(receiverHandle()); if (receiverThread == NULL) { // The other thread may exit during this process, which is ok so return false. return JNI_FALSE; } else { return (jint) Thread::is_interrupted(receiverThread, clear_interrupted != 0); } JRT_END JRT_ENTRY(jint, JVMCIRuntime::test_deoptimize_call_int(JavaThread* thread, int value)) deopt_caller(); return value; JRT_END // private static void Factory.init() JVM_ENTRY(void, JVM_InitJVMCIClassLoader(JNIEnv *env, jclass c, jobject loader_handle)) SystemDictionary::init_jvmci_loader(JNIHandles::resolve(loader_handle)); SystemDictionary::WKID scan = SystemDictionary::FIRST_JVMCI_WKID; SystemDictionary::initialize_wk_klasses_through(SystemDictionary::LAST_JVMCI_WKID, scan, CHECK); JVM_END // private static JVMCIRuntime JVMCI.initializeRuntime() JVM_ENTRY(jobject, JVM_GetJVMCIRuntime(JNIEnv *env, jclass c)) JVMCIRuntime::initialize_HotSpotJVMCIRuntime(); return JVMCIRuntime::get_HotSpotJVMCIRuntime_jobject(); JVM_END // private static Service[] Services.getServiceImpls(String serviceClass) JVM_ENTRY(jobject, JVM_GetJVMCIServiceImpls(JNIEnv *env, jclass c, jclass serviceClass)) HandleMark hm; ResourceMark rm; KlassHandle serviceKlass(THREAD, java_lang_Class::as_Klass(JNIHandles::resolve_non_null(serviceClass))); return JNIHandles::make_local(THREAD, JVMCIRuntime::get_service_impls(serviceKlass, THREAD)()); JVM_END // private static TruffleRuntime Truffle.createRuntime() JVM_ENTRY(jobject, JVM_CreateTruffleRuntime(JNIEnv *env, jclass c)) JVMCIRuntime::ensure_jvmci_class_loader_is_initialized(); TempNewSymbol name = SymbolTable::new_symbol("com/oracle/graal/truffle/hotspot/HotSpotTruffleRuntime", CHECK_NULL); KlassHandle klass = JVMCIRuntime::resolve_or_fail(name, CHECK_NULL); TempNewSymbol makeInstance = SymbolTable::new_symbol("makeInstance", CHECK_NULL); TempNewSymbol sig = SymbolTable::new_symbol("()Lcom/oracle/truffle/api/TruffleRuntime;", CHECK_NULL); JavaValue result(T_OBJECT); JavaCalls::call_static(&result, klass, makeInstance, sig, CHECK_NULL); return JNIHandles::make_local(THREAD, (oop) result.get_jobject()); JVM_END // private static NativeFunctionInterfaceRuntime.createInterface() JVM_ENTRY(jobject, JVM_CreateNativeFunctionInterface(JNIEnv *env, jclass c)) JVMCIRuntime::ensure_jvmci_class_loader_is_initialized(); TempNewSymbol name = SymbolTable::new_symbol("com/oracle/graal/truffle/hotspot/HotSpotTruffleRuntime", CHECK_NULL); KlassHandle klass = JVMCIRuntime::resolve_or_fail(name, CHECK_NULL); TempNewSymbol makeInstance = SymbolTable::new_symbol("createNativeFunctionInterface", CHECK_NULL); TempNewSymbol sig = SymbolTable::new_symbol("()Lcom/oracle/nfi/api/NativeFunctionInterface;", CHECK_NULL); JavaValue result(T_OBJECT); JavaCalls::call_static(&result, klass, makeInstance, sig, CHECK_NULL); return JNIHandles::make_local(THREAD, (oop) result.get_jobject()); JVM_END Handle JVMCIRuntime::callInitializer(const char* className, const char* methodName, const char* returnType) { guarantee(!_HotSpotJVMCIRuntime_initialized, "cannot reinitialize HotSpotJVMCIRuntime"); Thread* THREAD = Thread::current(); TempNewSymbol name = SymbolTable::new_symbol(className, CHECK_ABORT_(Handle())); KlassHandle klass = load_required_class(name); TempNewSymbol runtime = SymbolTable::new_symbol(methodName, CHECK_ABORT_(Handle())); TempNewSymbol sig = SymbolTable::new_symbol(returnType, CHECK_ABORT_(Handle())); JavaValue result(T_OBJECT); JavaCalls::call_static(&result, klass, runtime, sig, CHECK_ABORT_(Handle())); return Handle((oop)result.get_jobject()); } void JVMCIRuntime::initialize_HotSpotJVMCIRuntime() { if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) { #ifdef ASSERT // This should only be called in the context of the JVMCI class being initialized Thread* THREAD = Thread::current(); TempNewSymbol name = SymbolTable::new_symbol("com/oracle/jvmci/runtime/JVMCI", CHECK_ABORT); instanceKlassHandle klass = InstanceKlass::cast(load_required_class(name)); assert(klass->is_being_initialized() && klass->is_reentrant_initialization(THREAD), "HotSpotJVMCIRuntime initialization should only be triggered through JVMCI initialization"); #endif Handle result = callInitializer("com/oracle/jvmci/hotspot/HotSpotJVMCIRuntime", "runtime", "()Lcom/oracle/jvmci/hotspot/HotSpotJVMCIRuntime;"); _HotSpotJVMCIRuntime_initialized = true; _HotSpotJVMCIRuntime_instance = JNIHandles::make_global(result()); } } void JVMCIRuntime::initialize_JVMCI() { if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) { callInitializer("com/oracle/jvmci/runtime/JVMCI", "getRuntime", "()Lcom/oracle/jvmci/runtime/JVMCIRuntime;"); } assert(_HotSpotJVMCIRuntime_initialized == true, "what?"); } // private static void CompilerToVMImpl.init() JVM_ENTRY(void, JVM_InitializeJVMCINatives(JNIEnv *env, jclass c2vmClass)) JVMCIRuntime::initialize_natives(env, c2vmClass); JVM_END void JVMCIRuntime::ensure_jvmci_class_loader_is_initialized() { // This initialization code is guarded by a static pointer to the Factory class. // Once it is non-null, the JVMCI class loader and well known JVMCI classes are // guaranteed to have been initialized. By going through the static // initializer of Factory, we can rely on class initialization semantics to // synchronize threads racing to do the initialization. static Klass* _FactoryKlass = NULL; if (_FactoryKlass == NULL) { Thread* THREAD = Thread::current(); TempNewSymbol name = SymbolTable::new_symbol("com/oracle/jvmci/hotspot/loader/Factory", CHECK_ABORT); KlassHandle klass = SystemDictionary::resolve_or_fail(name, true, THREAD); if (HAS_PENDING_EXCEPTION) { static volatile int seen_error = 0; if (!seen_error && Atomic::cmpxchg(1, &seen_error, 0) == 0) { // Only report the failure on the first thread that hits it abort_on_pending_exception(PENDING_EXCEPTION, "JVMCI classes are not available"); } else { CLEAR_PENDING_EXCEPTION; // Give first thread time to report the error. os::sleep(THREAD, 100, false); vm_abort(false); } } // We cannot use jvmciJavaAccess for this because we are currently in the // process of initializing that mechanism. TempNewSymbol field_name = SymbolTable::new_symbol("useJVMCIClassLoader", CHECK_ABORT); fieldDescriptor field_desc; if (klass->find_field(field_name, vmSymbols::bool_signature(), &field_desc) == NULL) { ResourceMark rm; fatal(err_msg("Invalid layout of %s at %s", field_name->as_C_string(), klass->external_name())); } InstanceKlass* ik = InstanceKlass::cast(klass()); address addr = ik->static_field_addr(field_desc.offset() - InstanceMirrorKlass::offset_of_static_fields()); *((jboolean *) addr) = (jboolean) UseJVMCIClassLoader; klass->initialize(CHECK_ABORT); _FactoryKlass = klass(); assert(!UseJVMCIClassLoader || SystemDictionary::jvmci_loader() != NULL, "JVMCI classloader should have been initialized"); } } OptionsValueTable* JVMCIRuntime::parse_arguments() { OptionsTable* table = OptionsTable::load_options(); if (table == NULL) { return NULL; } OptionsValueTable* options = new OptionsValueTable(table); // Process option overrides from jvmci.options first parse_jvmci_options_file(options); // Now process options on the command line int numOptions = Arguments::num_jvmci_args(); for (int i = 0; i < numOptions; i++) { char* arg = Arguments::jvmci_args_array()[i]; if (!parse_argument(options, arg)) { delete options; return NULL; } } return options; } void not_found(OptionsTable* table, const char* argname, size_t namelen) { jio_fprintf(defaultStream::error_stream(),"Unrecognized VM option '%.*s'\n", namelen, argname); OptionDesc* fuzzy_matched = table->fuzzy_match(argname, strlen(argname)); if (fuzzy_matched != NULL) { jio_fprintf(defaultStream::error_stream(), "Did you mean '%s%s%s'?\n", (fuzzy_matched->type == _boolean) ? "(+/-)" : "", fuzzy_matched->name, (fuzzy_matched->type == _boolean) ? "" : "=<value>"); } } bool JVMCIRuntime::parse_argument(OptionsValueTable* options, const char* arg) { OptionsTable* table = options->options_table(); char first = arg[0]; const char* name; size_t name_len; if (first == '+' || first == '-') { name = arg + 1; OptionDesc* optionDesc = table->get(name); if (optionDesc == NULL) { not_found(table, name, strlen(name)); return false; } if (optionDesc->type != _boolean) { jio_fprintf(defaultStream::error_stream(), "Unexpected +/- setting in VM option '%s'\n", name); return false; } OptionValue value; value.desc = *optionDesc; value.boolean_value = first == '+'; options->put(value); return true; } else { const char* sep = strchr(arg, '='); name = arg; const char* value = NULL; if (sep != NULL) { name_len = sep - name; value = sep + 1; } else { name_len = strlen(name); } OptionDesc* optionDesc = table->get(name, name_len); if (optionDesc == NULL) { not_found(table, name, name_len); return false; } if (optionDesc->type == _boolean) { jio_fprintf(defaultStream::error_stream(), "Missing +/- setting for VM option '%s'\n", name); return false; } if (value == NULL) { jio_fprintf(defaultStream::error_stream(), "Must use '-G:%.*s=<value>' format for %.*s option", name_len, name, name_len, name); return false; } OptionValue optionValue; optionValue.desc = *optionDesc; char* check; errno = 0; switch(optionDesc->type) { case _int: { long int int_value = ::strtol(value, &check, 10); if (*check != '\0' || errno == ERANGE || int_value > max_jint || int_value < min_jint) { jio_fprintf(defaultStream::error_stream(), "Expected int value for VM option '%s'\n", name); return false; } optionValue.int_value = int_value; break; } case _long: { long long int long_value = ::strtoll(value, &check, 10); if (*check != '\0' || errno == ERANGE || long_value > max_jlong || long_value < min_jlong) { jio_fprintf(defaultStream::error_stream(), "Expected long value for VM option '%s'\n", name); return false; } optionValue.long_value = long_value; break; } case _float: { optionValue.float_value = ::strtof(value, &check); if (*check != '\0' || errno == ERANGE) { jio_fprintf(defaultStream::error_stream(), "Expected float value for VM option '%s'\n", name); return false; } break; } case _double: { optionValue.double_value = ::strtod(value, &check); if (*check != '\0' || errno == ERANGE) { jio_fprintf(defaultStream::error_stream(), "Expected double value for VM option '%s'\n", name); return false; } break; } case _string: { char* copy = NEW_C_HEAP_ARRAY(char, strlen(value) + 1, mtCompiler); strcpy(copy, value); optionValue.string_value = copy; break; } default: ShouldNotReachHere(); } options->put(optionValue); return true; } } class JVMCIOptionParseClosure : public ParseClosure { OptionsValueTable* _options; public: JVMCIOptionParseClosure(OptionsValueTable* options) : _options(options) {} void do_line(char* line) { if (!JVMCIRuntime::parse_argument(_options, line)) { warn("There was an error parsing an argument. Skipping it."); } } }; void JVMCIRuntime::parse_jvmci_options_file(OptionsValueTable* options) { const char* home = Arguments::get_java_home(); size_t path_len = strlen(home) + strlen("/lib/jvmci.options") + 1; char path[JVM_MAXPATHLEN]; char sep = os::file_separator()[0]; jio_snprintf(path, JVM_MAXPATHLEN, "%s%clib%cjvmci.options", home, sep, sep); JVMCIOptionParseClosure closure(options); parse_lines(path, &closure, false); } #define CHECK_WARN_ABORT_(message) THREAD); \ if (HAS_PENDING_EXCEPTION) { \ warning(message); \ char buf[512]; \ jio_snprintf(buf, 512, "Uncaught exception at %s:%d", __FILE__, __LINE__); \ JVMCIRuntime::abort_on_pending_exception(PENDING_EXCEPTION, buf); \ return; \ } \ (void)(0 class SetOptionClosure : public ValueClosure<OptionValue> { Thread* _thread; public: SetOptionClosure(TRAPS) : _thread(THREAD) {} void do_value(OptionValue* optionValue) { TRAPS = _thread; const char* declaringClass = optionValue->desc.declaringClass; if (declaringClass == NULL) { // skip PrintFlags pseudo-option return; } const char* fieldName = optionValue->desc.name; const char* fieldClass = optionValue->desc.fieldClass; size_t fieldSigLen = 2 + strlen(fieldClass); char* fieldSig = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, fieldSigLen + 1); jio_snprintf(fieldSig, fieldSigLen + 1, "L%s;", fieldClass); for (size_t i = 0; i < fieldSigLen; ++i) { if (fieldSig[i] == '.') { fieldSig[i] = '/'; } } fieldSig[fieldSigLen] = '\0'; size_t declaringClassLen = strlen(declaringClass); char* declaringClassBinary = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, declaringClassLen + 1); for (size_t i = 0; i < declaringClassLen; ++i) { if (declaringClass[i] == '.') { declaringClassBinary[i] = '/'; } else { declaringClassBinary[i] = declaringClass[i]; } } declaringClassBinary[declaringClassLen] = '\0'; TempNewSymbol name = SymbolTable::new_symbol(declaringClassBinary, CHECK_WARN_ABORT_("Declaring class could not be found")); Klass* klass = JVMCIRuntime::resolve_or_null(name, CHECK_WARN_ABORT_("Declaring class could not be resolved")); if (klass == NULL) { warning("Declaring class for option %s could not be resolved", declaringClass); abort(); return; } // The class has been loaded so the field and signature should already be in the symbol // table. If they're not there, the field doesn't exist. TempNewSymbol fieldname = SymbolTable::probe(fieldName, (int)strlen(fieldName)); TempNewSymbol signame = SymbolTable::probe(fieldSig, (int)fieldSigLen); if (fieldname == NULL || signame == NULL) { warning("Symbols for field for option %s not found (in %s)", fieldName, declaringClass); abort(); return; } // Make sure class is initialized before handing id's out to fields klass->initialize(CHECK_WARN_ABORT_("Error while initializing declaring class for option")); fieldDescriptor fd; if (!InstanceKlass::cast(klass)->find_field(fieldname, signame, true, &fd)) { warning("Field for option %s not found (in %s)", fieldName, declaringClass); abort(); return; } oop value; switch(optionValue->desc.type) { case _boolean: { jvalue jv; jv.z = optionValue->boolean_value; value = java_lang_boxing_object::create(T_BOOLEAN, &jv, THREAD); break; } case _int: { jvalue jv; jv.i = optionValue->int_value; value = java_lang_boxing_object::create(T_INT, &jv, THREAD); break; } case _long: { jvalue jv; jv.j = optionValue->long_value; value = java_lang_boxing_object::create(T_LONG, &jv, THREAD); break; } case _float: { jvalue jv; jv.f = optionValue->float_value; value = java_lang_boxing_object::create(T_FLOAT, &jv, THREAD); break; } case _double: { jvalue jv; jv.d = optionValue->double_value; value = java_lang_boxing_object::create(T_DOUBLE, &jv, THREAD); break; } case _string: value = java_lang_String::create_from_str(optionValue->string_value, THREAD)(); break; default: ShouldNotReachHere(); } oop optionValueOop = klass->java_mirror()->obj_field(fd.offset()); if (optionValueOop == NULL) { warning("Option field was null, can not set %s", fieldName); abort(); return; } if (!InstanceKlass::cast(optionValueOop->klass())->find_field(vmSymbols::value_name(), vmSymbols::object_signature(), false, &fd)) { warning("'Object value' field not found in option class %s, can not set option %s", fieldClass, fieldName); abort(); return; } optionValueOop->obj_field_put(fd.offset(), value); } }; void JVMCIRuntime::set_options(OptionsValueTable* options, TRAPS) { ensure_jvmci_class_loader_is_initialized(); { ResourceMark rm; SetOptionClosure closure(THREAD); options->for_each(&closure); if (closure.is_aborted()) { vm_abort(false); } notify_options_set(THREAD); } OptionValue* printFlags = options->get(PRINT_FLAGS_ARG); if (printFlags != NULL && printFlags->boolean_value) { print_flags_helper(CHECK_ABORT); } } void JVMCIRuntime::notify_options_set(TRAPS) { HandleMark hm(THREAD); TempNewSymbol optionsParsedName = SymbolTable::new_symbol("com/oracle/jvmci/runtime/OptionsParsed", CHECK_ABORT); KlassHandle optionsParsedClass = load_required_class(optionsParsedName); objArrayHandle impls = get_service_impls(optionsParsedClass, THREAD); int implsLen = impls->length(); if (implsLen != 0) { for (int i = 0; i < implsLen; i++) { JavaValue result(T_VOID); JavaCallArguments args; args.push_oop(impls->obj_at(i)); JavaCalls::call_interface(&result, optionsParsedClass, vmSymbols::run_method_name(), vmSymbols::void_method_signature(), &args, CHECK_ABORT); } } } void JVMCIRuntime::print_flags_helper(TRAPS) { // TODO(gd) write this in C++? HandleMark hm(THREAD); TempNewSymbol name = SymbolTable::new_symbol("com/oracle/jvmci/hotspot/HotSpotOptions", CHECK_ABORT); KlassHandle hotSpotOptionsClass = load_required_class(name); TempNewSymbol setOption = SymbolTable::new_symbol("printFlags", CHECK); JavaValue result(T_VOID); JavaCallArguments args; JavaCalls::call_static(&result, hotSpotOptionsClass, setOption, vmSymbols::void_method_signature(), &args, CHECK); } Handle JVMCIRuntime::create_Service(const char* name, TRAPS) { TempNewSymbol kname = SymbolTable::new_symbol(name, CHECK_NH); Klass* k = resolve_or_fail(kname, CHECK_NH); instanceKlassHandle klass(THREAD, k); klass->initialize(CHECK_NH); klass->check_valid_for_instantiation(true, CHECK_NH); JavaValue result(T_VOID); instanceHandle service = klass->allocate_instance_handle(CHECK_NH); JavaCalls::call_special(&result, service, klass, vmSymbols::object_initializer_name(), vmSymbols::void_method_signature(), THREAD); return service; } void JVMCIRuntime::shutdown() { if (_HotSpotJVMCIRuntime_instance != NULL) { _shutdown_called = true; JavaThread* THREAD = JavaThread::current(); HandleMark hm(THREAD); TempNewSymbol name = SymbolTable::new_symbol("com/oracle/jvmci/hotspot/HotSpotJVMCIRuntime", CHECK_ABORT); KlassHandle klass = load_required_class(name); JavaValue result(T_VOID); JavaCallArguments args; args.push_oop(get_HotSpotJVMCIRuntime()); JavaCalls::call_special(&result, klass, vmSymbols::shutdown_method_name(), vmSymbols::void_method_signature(), &args, CHECK_ABORT); JNIHandles::destroy_global(_HotSpotJVMCIRuntime_instance); _HotSpotJVMCIRuntime_instance = NULL; } } void JVMCIRuntime::call_printStackTrace(Handle exception, Thread* thread) { assert(exception->is_a(SystemDictionary::Throwable_klass()), "Throwable instance expected"); JavaValue result(T_VOID); JavaCalls::call_virtual(&result, exception, KlassHandle(thread, SystemDictionary::Throwable_klass()), vmSymbols::printStackTrace_name(), vmSymbols::void_method_signature(), thread); } void JVMCIRuntime::abort_on_pending_exception(Handle exception, const char* message, bool dump_core) { Thread* THREAD = Thread::current(); CLEAR_PENDING_EXCEPTION; tty->print_raw_cr(message); call_printStackTrace(exception, THREAD); // Give other aborting threads to also print their stack traces. // This can be very useful when debugging class initialization // failures. os::sleep(THREAD, 200, false); vm_abort(dump_core); } Klass* JVMCIRuntime::resolve_or_null(Symbol* name, TRAPS) { return SystemDictionary::resolve_or_null(name, SystemDictionary::jvmci_loader(), Handle(), CHECK_NULL); } Klass* JVMCIRuntime::resolve_or_fail(Symbol* name, TRAPS) { return SystemDictionary::resolve_or_fail(name, SystemDictionary::jvmci_loader(), Handle(), true, CHECK_NULL); } Klass* JVMCIRuntime::load_required_class(Symbol* name) { Klass* klass = resolve_or_null(name, Thread::current()); if (klass == NULL) { tty->print_cr("Could not load class %s", name->as_C_string()); vm_abort(false); } return klass; } void JVMCIRuntime::parse_lines(char* path, ParseClosure* closure, bool warnStatFailure) { struct stat st; if (os::stat(path, &st) == 0 && (st.st_mode & S_IFREG) == S_IFREG) { // exists & is regular file int file_handle = os::open(path, 0, 0); if (file_handle != -1) { char* buffer = NEW_C_HEAP_ARRAY(char, st.st_size + 1, mtInternal); int num_read = (int) os::read(file_handle, (char*) buffer, st.st_size); if (num_read == -1) { warning("Error reading file %s due to %s", path, strerror(errno)); } else if (num_read != st.st_size) { warning("Only read %d of " SIZE_FORMAT " bytes from %s", num_read, (size_t) st.st_size, path); } os::close(file_handle); closure->set_filename(path); if (num_read == st.st_size) { buffer[num_read] = '\0'; char* line = buffer; while (line - buffer < num_read && !closure->is_aborted()) { // find line end (\r, \n or \r\n) char* nextline = NULL; char* cr = strchr(line, '\r'); char* lf = strchr(line, '\n'); if (cr != NULL && lf != NULL) { char* min = MIN2(cr, lf); *min = '\0'; if (lf == cr + 1) { nextline = lf + 1; } else { nextline = min + 1; } } else if (cr != NULL) { *cr = '\0'; nextline = cr + 1; } else if (lf != NULL) { *lf = '\0'; nextline = lf + 1; } // trim left while (*line == ' ' || *line == '\t') line++; char* end = line + strlen(line); // trim right while (end > line && (*(end -1) == ' ' || *(end -1) == '\t')) end--; *end = '\0'; // skip comments and empty lines if (*line != '#' && strlen(line) > 0) { closure->parse_line(line); } if (nextline != NULL) { line = nextline; } else { // File without newline at the end break; } } } FREE_C_HEAP_ARRAY(char, buffer, mtInternal); } else { warning("Error opening file %s due to %s", path, strerror(errno)); } } else if (warnStatFailure) { warning("Could not stat file %s due to %s", path, strerror(errno)); } } class ServiceParseClosure : public ParseClosure { GrowableArray<char*> _implNames; public: ServiceParseClosure() : _implNames() {} void do_line(char* line) { size_t lineLen = strlen(line); char* implName = NEW_C_HEAP_ARRAY(char, lineLen + 1, mtCompiler); // TODO (gd) i'm leaking // Turn all '.'s into '/'s for (size_t index = 0; index < lineLen; ++index) { if (line[index] == '.') { implName[index] = '/'; } else { implName[index] = line[index]; } } implName[lineLen] = '\0'; _implNames.append(implName); } GrowableArray<char*>* implNames() {return &_implNames;} }; objArrayHandle JVMCIRuntime::get_service_impls(KlassHandle serviceKlass, TRAPS) { const char* home = Arguments::get_java_home(); const char* serviceName = serviceKlass->external_name(); size_t path_len = strlen(home) + strlen("/lib/jvmci/services/") + strlen(serviceName) + 1; char* path = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, path_len); char sep = os::file_separator()[0]; sprintf(path, "%s%clib%cjvmci%cservices%c%s", home, sep, sep, sep, sep, serviceName); ServiceParseClosure closure; parse_lines(path, &closure, true); // TODO(gd) cache parsing results? GrowableArray<char*>* implNames = closure.implNames(); objArrayOop servicesOop = oopFactory::new_objArray(serviceKlass(), implNames->length(), CHECK_(objArrayHandle())); objArrayHandle services(THREAD, servicesOop); for (int i = 0; i < implNames->length(); ++i) { char* implName = implNames->at(i); Handle service = create_Service(implName, CHECK_(objArrayHandle())); services->obj_at_put(i, service()); } return services; }