| /* |
| * Copyright (c) 2012, 2017, 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 "classfile/javaClasses.inline.hpp" |
| #include "code/codeCache.hpp" |
| #include "compiler/compileBroker.hpp" |
| #include "compiler/disassembler.hpp" |
| #include "jvmci/jvmciRuntime.hpp" |
| #include "jvmci/jvmciCompilerToVM.hpp" |
| #include "jvmci/jvmciCompiler.hpp" |
| #include "jvmci/jvmciJavaClasses.hpp" |
| #include "jvmci/jvmciEnv.hpp" |
| #include "logging/log.hpp" |
| #include "memory/oopFactory.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "oops/oop.inline.hpp" |
| #include "oops/objArrayOop.inline.hpp" |
| #include "prims/jvm.h" |
| #include "runtime/biasedLocking.hpp" |
| #include "runtime/interfaceSupport.hpp" |
| #include "runtime/reflection.hpp" |
| #include "runtime/sharedRuntime.hpp" |
| #include "utilities/debug.hpp" |
| #include "utilities/defaultStream.hpp" |
| #include "utilities/macros.hpp" |
| |
| #if defined(_MSC_VER) |
| #define strtoll _strtoi64 |
| #endif |
| |
| jobject JVMCIRuntime::_HotSpotJVMCIRuntime_instance = NULL; |
| bool JVMCIRuntime::_HotSpotJVMCIRuntime_initialized = false; |
| bool JVMCIRuntime::_well_known_classes_initialized = false; |
| int JVMCIRuntime::_trivial_prefixes_count = 0; |
| char** JVMCIRuntime::_trivial_prefixes = NULL; |
| JVMCIRuntime::CompLevelAdjustment JVMCIRuntime::_comp_level_adjustment = JVMCIRuntime::none; |
| bool JVMCIRuntime::_shutdown_called = false; |
| |
| BasicType JVMCIRuntime::kindToBasicType(Handle kind, TRAPS) { |
| if (kind.is_null()) { |
| THROW_(vmSymbols::java_lang_NullPointerException(), T_ILLEGAL); |
| } |
| jchar ch = JavaKind::typeChar(kind); |
| 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: |
| JVMCI_ERROR_(T_ILLEGAL, "unexpected Kind: %c", ch); |
| } |
| } |
| |
| // 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"); |
| Handle holder(THREAD, klass->klass_holder()); // keep the klass alive |
| InstanceKlass* ik = InstanceKlass::cast(klass); |
| ik->check_valid_for_instantiation(true, CHECK); |
| // make sure klass is initialized |
| ik->initialize(CHECK); |
| // allocate instance and return via TLS |
| oop obj = ik->allocate_instance(CHECK); |
| thread->set_vm_result(obj); |
| JRT_BLOCK_END; |
| |
| if (ReduceInitialCardMarks) { |
| 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->is_typeArray_klass()) { |
| BasicType elt_type = TypeArrayKlass::cast(array_klass)->element_type(); |
| obj = oopFactory::new_typeArray(elt_type, length, CHECK); |
| } else { |
| Handle holder(THREAD, array_klass->klass_holder()); // keep the klass alive |
| 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 (ReduceInitialCardMarks) { |
| 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"); |
| Handle holder(THREAD, klass->klass_holder()); // keep the klass alive |
| 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)) |
| InstanceKlass* klass = InstanceKlass::cast(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, CompiledMethod*& cm)) |
| // Reset method handle flag. |
| thread->set_is_method_handle_return(false); |
| |
| Handle exception(thread, ex); |
| cm = CodeCache::find_compiled(pc); |
| assert(cm != NULL, "this is not a compiled method"); |
| // Adjust the pc as needed/ |
| if (cm->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"); |
| // 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_guards_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 = cm->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(cm->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 (log_is_enabled(Info, exceptions)) { |
| ResourceMark rm; |
| stringStream tempst; |
| tempst.print("compiled method <%s>\n" |
| " at PC" INTPTR_FORMAT " for thread " INTPTR_FORMAT, |
| cm->method()->print_value_string(), p2i(pc), p2i(thread)); |
| Exceptions::log_exception(exception, tempst); |
| } |
| // 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(); |
| |
| bool recursive_exception = false; |
| continuation = SharedRuntime::compute_compiled_exc_handler(cm, pc, exception, false, false, recursive_exception); |
| // 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 |
| // Update the exception cache only when there didn't happen |
| // another exception during the computation of the compiled |
| // exception handler. Checking for exception oop equality is not |
| // sufficient because some exceptions are pre-allocated and reused. |
| if (continuation != NULL && !recursive_exception && !SharedRuntime::deopt_blob()->contains(continuation)) { |
| cm->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(cm->is_method_handle_return(pc)); |
| |
| if (log_is_enabled(Info, exceptions)) { |
| ResourceMark rm; |
| log_info(exceptions)("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); |
| CompiledMethod* cm = NULL; |
| address continuation = NULL; |
| { |
| // Enter VM mode by calling the helper |
| ResetNoHandleMark rnhm; |
| continuation = exception_handler_for_pc_helper(thread, exception, pc, cm); |
| } |
| // Back in JAVA, use no oops DON'T safepoint |
| |
| // Now check to see if the compiled method we were called from is now deoptimized. |
| // If so we must return to the deopt blob and deoptimize the nmethod |
| if (cm != NULL && caller_is_deopted()) { |
| continuation = SharedRuntime::deopt_blob()->unpack_with_exception_in_tls(); |
| } |
| |
| assert(continuation != NULL, "no handler found"); |
| return continuation; |
| } |
| |
| JRT_ENTRY_NO_ASYNC(void, JVMCIRuntime::monitorenter(JavaThread* thread, oopDesc* obj, BasicLock* lock)) |
| IF_TRACE_jvmci_3 { |
| char type[O_BUFLEN]; |
| obj->klass()->name()->as_C_string(type, O_BUFLEN); |
| markOop mark = obj->mark(); |
| TRACE_jvmci_3("%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); |
| 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); |
| } |
| } |
| TRACE_jvmci_3("%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 (!oopDesc::is_oop(obj)) { |
| 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_TRACE_jvmci_3 { |
| char type[O_BUFLEN]; |
| obj->klass()->name()->as_C_string(type, O_BUFLEN); |
| TRACE_jvmci_3("%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_ENTRY(void, JVMCIRuntime::throw_and_post_jvmti_exception(JavaThread* thread, const char* exception, const char* message)) |
| TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK); |
| SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, message); |
| JRT_END |
| |
| JRT_ENTRY(void, JVMCIRuntime::throw_klass_external_name_exception(JavaThread* thread, const char* exception, Klass* klass)) |
| ResourceMark rm(thread); |
| TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK); |
| SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, klass->external_name()); |
| JRT_END |
| |
| JRT_ENTRY(void, JVMCIRuntime::throw_class_cast_exception(JavaThread* thread, const char* exception, Klass* caster_klass, Klass* target_klass)) |
| ResourceMark rm(thread); |
| const char* message = SharedRuntime::generate_class_cast_message(caster_klass, target_klass); |
| TempNewSymbol symbol = SymbolTable::new_symbol(exception, CHECK); |
| SharedRuntime::throw_and_post_jvmti_exception(thread, symbol, message); |
| JRT_END |
| |
| JRT_LEAF(void, JVMCIRuntime::log_object(JavaThread* thread, oopDesc* obj, bool as_string, bool newline)) |
| ttyLocker ttyl; |
| |
| if (obj == NULL) { |
| tty->print("NULL"); |
| } else if (oopDesc::is_oop_or_null(obj, true) && (!as_string || !java_lang_String::is_instance(obj))) { |
| if (oopDesc::is_oop_or_null(obj, 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, "%s", detail_msg); |
| } else { |
| report_vm_error(__FILE__, __LINE__, error_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 |
| |
| PRAGMA_DIAG_PUSH |
| PRAGMA_FORMAT_NONLITERAL_IGNORED |
| 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((const char*)buf, v1, v2, v3); |
| JRT_END |
| PRAGMA_DIAG_POP |
| |
| 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); |
| } |
| } |
| |
| PRAGMA_DIAG_PUSH |
| PRAGMA_FORMAT_NONLITERAL_IGNORED |
| JRT_LEAF(void, JVMCIRuntime::vm_message(jboolean vmError, jlong format, jlong v1, jlong v2, jlong v3)) |
| ResourceMark rm; |
| const char *buf = (const char*) (address) format; |
| if (vmError) { |
| if (buf != NULL) { |
| fatal(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 |
| PRAGMA_DIAG_POP |
| |
| 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 |
| |
| void JVMCIRuntime::force_initialization(TRAPS) { |
| JVMCIRuntime::initialize_well_known_classes(CHECK); |
| |
| ResourceMark rm; |
| TempNewSymbol getCompiler = SymbolTable::new_symbol("getCompiler", CHECK); |
| TempNewSymbol sig = SymbolTable::new_symbol("()Ljdk/vm/ci/runtime/JVMCICompiler;", CHECK); |
| Handle jvmciRuntime = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK); |
| JavaValue result(T_OBJECT); |
| JavaCalls::call_virtual(&result, jvmciRuntime, HotSpotJVMCIRuntime::klass(), getCompiler, sig, CHECK); |
| } |
| |
| // private static JVMCIRuntime JVMCI.initializeRuntime() |
| JVM_ENTRY(jobject, JVM_GetJVMCIRuntime(JNIEnv *env, jclass c)) |
| if (!EnableJVMCI) { |
| THROW_MSG_NULL(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled") |
| } |
| JVMCIRuntime::initialize_HotSpotJVMCIRuntime(CHECK_NULL); |
| jobject ret = JVMCIRuntime::get_HotSpotJVMCIRuntime_jobject(CHECK_NULL); |
| return ret; |
| JVM_END |
| |
| Handle JVMCIRuntime::callStatic(const char* className, const char* methodName, const char* signature, JavaCallArguments* args, TRAPS) { |
| TempNewSymbol name = SymbolTable::new_symbol(className, CHECK_(Handle())); |
| Klass* klass = SystemDictionary::resolve_or_fail(name, true, CHECK_(Handle())); |
| TempNewSymbol runtime = SymbolTable::new_symbol(methodName, CHECK_(Handle())); |
| TempNewSymbol sig = SymbolTable::new_symbol(signature, CHECK_(Handle())); |
| JavaValue result(T_OBJECT); |
| if (args == NULL) { |
| JavaCalls::call_static(&result, klass, runtime, sig, CHECK_(Handle())); |
| } else { |
| JavaCalls::call_static(&result, klass, runtime, sig, args, CHECK_(Handle())); |
| } |
| return Handle(THREAD, (oop)result.get_jobject()); |
| } |
| |
| void JVMCIRuntime::initialize_HotSpotJVMCIRuntime(TRAPS) { |
| guarantee(!_HotSpotJVMCIRuntime_initialized, "cannot reinitialize HotSpotJVMCIRuntime"); |
| JVMCIRuntime::initialize_well_known_classes(CHECK); |
| // This should only be called in the context of the JVMCI class being initialized |
| InstanceKlass* klass = SystemDictionary::JVMCI_klass(); |
| guarantee(klass->is_being_initialized() && klass->is_reentrant_initialization(THREAD), |
| "HotSpotJVMCIRuntime initialization should only be triggered through JVMCI initialization"); |
| |
| Handle result = callStatic("jdk/vm/ci/hotspot/HotSpotJVMCIRuntime", |
| "runtime", |
| "()Ljdk/vm/ci/hotspot/HotSpotJVMCIRuntime;", NULL, CHECK); |
| objArrayOop trivial_prefixes = HotSpotJVMCIRuntime::trivialPrefixes(result); |
| if (trivial_prefixes != NULL) { |
| char** prefixes = NEW_C_HEAP_ARRAY(char*, trivial_prefixes->length(), mtCompiler); |
| for (int i = 0; i < trivial_prefixes->length(); i++) { |
| oop str = trivial_prefixes->obj_at(i); |
| if (str == NULL) { |
| THROW(vmSymbols::java_lang_NullPointerException()); |
| } else { |
| prefixes[i] = strdup(java_lang_String::as_utf8_string(str)); |
| } |
| } |
| _trivial_prefixes = prefixes; |
| _trivial_prefixes_count = trivial_prefixes->length(); |
| } |
| int adjustment = HotSpotJVMCIRuntime::compilationLevelAdjustment(result); |
| assert(adjustment >= JVMCIRuntime::none && |
| adjustment <= JVMCIRuntime::by_full_signature, |
| "compilation level adjustment out of bounds"); |
| _comp_level_adjustment = (CompLevelAdjustment) adjustment; |
| _HotSpotJVMCIRuntime_initialized = true; |
| _HotSpotJVMCIRuntime_instance = JNIHandles::make_global(result); |
| } |
| |
| void JVMCIRuntime::initialize_JVMCI(TRAPS) { |
| if (JNIHandles::resolve(_HotSpotJVMCIRuntime_instance) == NULL) { |
| callStatic("jdk/vm/ci/runtime/JVMCI", |
| "getRuntime", |
| "()Ljdk/vm/ci/runtime/JVMCIRuntime;", NULL, CHECK); |
| } |
| assert(_HotSpotJVMCIRuntime_initialized == true, "what?"); |
| } |
| |
| bool JVMCIRuntime::can_initialize_JVMCI() { |
| // Initializing JVMCI requires the module system to be initialized past phase 3. |
| // The JVMCI API itself isn't available until phase 2 and ServiceLoader (which |
| // JVMCI initialization requires) isn't usable until after phase 3. Testing |
| // whether the system loader is initialized satisfies all these invariants. |
| if (SystemDictionary::java_system_loader() == NULL) { |
| return false; |
| } |
| assert(Universe::is_module_initialized(), "must be"); |
| return true; |
| } |
| |
| void JVMCIRuntime::initialize_well_known_classes(TRAPS) { |
| if (JVMCIRuntime::_well_known_classes_initialized == false) { |
| guarantee(can_initialize_JVMCI(), "VM is not yet sufficiently booted to initialize JVMCI"); |
| SystemDictionary::WKID scan = SystemDictionary::FIRST_JVMCI_WKID; |
| SystemDictionary::initialize_wk_klasses_through(SystemDictionary::LAST_JVMCI_WKID, scan, CHECK); |
| JVMCIJavaClasses::compute_offsets(CHECK); |
| JVMCIRuntime::_well_known_classes_initialized = true; |
| } |
| } |
| |
| void JVMCIRuntime::metadata_do(void f(Metadata*)) { |
| // For simplicity, the existence of HotSpotJVMCIMetaAccessContext in |
| // the SystemDictionary well known classes should ensure the other |
| // classes have already been loaded, so make sure their order in the |
| // table enforces that. |
| assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedJavaMethodImpl) < |
| SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier"); |
| assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotConstantPool) < |
| SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier"); |
| assert(SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotResolvedObjectTypeImpl) < |
| SystemDictionary::WK_KLASS_ENUM_NAME(jdk_vm_ci_hotspot_HotSpotJVMCIMetaAccessContext), "must be loaded earlier"); |
| |
| if (HotSpotJVMCIMetaAccessContext::klass() == NULL || |
| !HotSpotJVMCIMetaAccessContext::klass()->is_linked()) { |
| // Nothing could be registered yet |
| return; |
| } |
| |
| // WeakReference<HotSpotJVMCIMetaAccessContext>[] |
| objArrayOop allContexts = HotSpotJVMCIMetaAccessContext::allContexts(); |
| if (allContexts == NULL) { |
| return; |
| } |
| |
| // These must be loaded at this point but the linking state doesn't matter. |
| assert(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass() != NULL, "must be loaded"); |
| assert(SystemDictionary::HotSpotConstantPool_klass() != NULL, "must be loaded"); |
| assert(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass() != NULL, "must be loaded"); |
| |
| for (int i = 0; i < allContexts->length(); i++) { |
| oop ref = allContexts->obj_at(i); |
| if (ref != NULL) { |
| oop referent = java_lang_ref_Reference::referent(ref); |
| if (referent != NULL) { |
| // Chunked Object[] with last element pointing to next chunk |
| objArrayOop metadataRoots = HotSpotJVMCIMetaAccessContext::metadataRoots(referent); |
| while (metadataRoots != NULL) { |
| for (int typeIndex = 0; typeIndex < metadataRoots->length() - 1; typeIndex++) { |
| oop reference = metadataRoots->obj_at(typeIndex); |
| if (reference == NULL) { |
| continue; |
| } |
| oop metadataRoot = java_lang_ref_Reference::referent(reference); |
| if (metadataRoot == NULL) { |
| continue; |
| } |
| if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedJavaMethodImpl_klass())) { |
| Method* method = CompilerToVM::asMethod(metadataRoot); |
| f(method); |
| } else if (metadataRoot->is_a(SystemDictionary::HotSpotConstantPool_klass())) { |
| ConstantPool* constantPool = CompilerToVM::asConstantPool(metadataRoot); |
| f(constantPool); |
| } else if (metadataRoot->is_a(SystemDictionary::HotSpotResolvedObjectTypeImpl_klass())) { |
| Klass* klass = CompilerToVM::asKlass(metadataRoot); |
| f(klass); |
| } else { |
| metadataRoot->print(); |
| ShouldNotReachHere(); |
| } |
| } |
| metadataRoots = (objArrayOop)metadataRoots->obj_at(metadataRoots->length() - 1); |
| assert(metadataRoots == NULL || metadataRoots->is_objArray(), "wrong type"); |
| } |
| } |
| } |
| } |
| } |
| |
| // private static void CompilerToVM.registerNatives() |
| JVM_ENTRY(void, JVM_RegisterJVMCINatives(JNIEnv *env, jclass c2vmClass)) |
| if (!EnableJVMCI) { |
| THROW_MSG(vmSymbols::java_lang_InternalError(), "JVMCI is not enabled"); |
| } |
| |
| #ifdef _LP64 |
| #ifndef SPARC |
| uintptr_t heap_end = (uintptr_t) Universe::heap()->reserved_region().end(); |
| uintptr_t allocation_end = heap_end + ((uintptr_t)16) * 1024 * 1024 * 1024; |
| guarantee(heap_end < allocation_end, "heap end too close to end of address space (might lead to erroneous TLAB allocations)"); |
| #endif // !SPARC |
| #else |
| fatal("check TLAB allocation code for address space conflicts"); |
| #endif // _LP64 |
| |
| JVMCIRuntime::initialize_well_known_classes(CHECK); |
| |
| { |
| ThreadToNativeFromVM trans(thread); |
| env->RegisterNatives(c2vmClass, CompilerToVM::methods, CompilerToVM::methods_count()); |
| } |
| JVM_END |
| |
| void JVMCIRuntime::shutdown(TRAPS) { |
| if (_HotSpotJVMCIRuntime_instance != NULL) { |
| _shutdown_called = true; |
| HandleMark hm(THREAD); |
| Handle receiver = get_HotSpotJVMCIRuntime(CHECK); |
| JavaValue result(T_VOID); |
| JavaCallArguments args; |
| args.push_oop(receiver); |
| JavaCalls::call_special(&result, receiver->klass(), vmSymbols::shutdown_method_name(), vmSymbols::void_method_signature(), &args, CHECK); |
| } |
| } |
| |
| CompLevel JVMCIRuntime::adjust_comp_level_inner(const methodHandle& method, bool is_osr, CompLevel level, JavaThread* thread) { |
| JVMCICompiler* compiler = JVMCICompiler::instance(thread); |
| if (compiler != NULL && compiler->is_bootstrapping()) { |
| return level; |
| } |
| if (!is_HotSpotJVMCIRuntime_initialized() || !_comp_level_adjustment) { |
| // JVMCI cannot participate in compilation scheduling until |
| // JVMCI is initialized and indicates it wants to participate. |
| return level; |
| } |
| |
| #define CHECK_RETURN THREAD); \ |
| if (HAS_PENDING_EXCEPTION) { \ |
| Handle exception(THREAD, PENDING_EXCEPTION); \ |
| CLEAR_PENDING_EXCEPTION; \ |
| \ |
| java_lang_Throwable::java_printStackTrace(exception, THREAD); \ |
| if (HAS_PENDING_EXCEPTION) { \ |
| CLEAR_PENDING_EXCEPTION; \ |
| } \ |
| return level; \ |
| } \ |
| (void)(0 |
| |
| |
| Thread* THREAD = thread; |
| HandleMark hm; |
| Handle receiver = JVMCIRuntime::get_HotSpotJVMCIRuntime(CHECK_RETURN); |
| Handle name; |
| Handle sig; |
| if (_comp_level_adjustment == JVMCIRuntime::by_full_signature) { |
| name = java_lang_String::create_from_symbol(method->name(), CHECK_RETURN); |
| sig = java_lang_String::create_from_symbol(method->signature(), CHECK_RETURN); |
| } else { |
| name = Handle(); |
| sig = Handle(); |
| } |
| |
| JavaValue result(T_INT); |
| JavaCallArguments args; |
| args.push_oop(receiver); |
| args.push_oop(Handle(THREAD, method->method_holder()->java_mirror())); |
| args.push_oop(name); |
| args.push_oop(sig); |
| args.push_int(is_osr); |
| args.push_int(level); |
| JavaCalls::call_special(&result, receiver->klass(), vmSymbols::adjustCompilationLevel_name(), |
| vmSymbols::adjustCompilationLevel_signature(), &args, CHECK_RETURN); |
| |
| int comp_level = result.get_jint(); |
| if (comp_level < CompLevel_none || comp_level > CompLevel_full_optimization) { |
| assert(false, "compilation level out of bounds"); |
| return level; |
| } |
| return (CompLevel) comp_level; |
| #undef CHECK_RETURN |
| } |
| |
| void JVMCIRuntime::bootstrap_finished(TRAPS) { |
| HandleMark hm(THREAD); |
| Handle receiver = get_HotSpotJVMCIRuntime(CHECK); |
| JavaValue result(T_VOID); |
| JavaCallArguments args; |
| args.push_oop(receiver); |
| JavaCalls::call_special(&result, receiver->klass(), vmSymbols::bootstrapFinished_method_name(), vmSymbols::void_method_signature(), &args, CHECK); |
| } |
| |
| bool JVMCIRuntime::treat_as_trivial(Method* method) { |
| if (_HotSpotJVMCIRuntime_initialized) { |
| for (int i = 0; i < _trivial_prefixes_count; i++) { |
| if (method->method_holder()->name()->starts_with(_trivial_prefixes[i])) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |