/* * Copyright (c) 2016, 2020, 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 "aot/aotCodeHeap.hpp" #include "aot/aotLoader.hpp" #include "ci/ciUtilities.inline.hpp" #include "classfile/javaAssertions.hpp" #include "gc/shared/cardTable.hpp" #include "gc/shared/cardTableBarrierSet.hpp" #include "gc/shared/gcConfig.hpp" #include "gc/g1/heapRegion.hpp" #include "interpreter/abstractInterpreter.hpp" #include "jvmci/compilerRuntime.hpp" #include "jvmci/jvmciRuntime.hpp" #include "logging/log.hpp" #include "memory/allocation.inline.hpp" #include "memory/universe.hpp" #include "oops/compressedOops.hpp" #include "oops/klass.inline.hpp" #include "oops/method.inline.hpp" #include "runtime/atomic.hpp" #include "runtime/deoptimization.hpp" #include "runtime/handles.inline.hpp" #include "runtime/os.hpp" #include "runtime/safepointVerifiers.hpp" #include "runtime/sharedRuntime.hpp" #include "runtime/vmOperations.hpp" #include "utilities/powerOfTwo.hpp" #include "utilities/sizes.hpp" bool AOTLib::_narrow_oop_shift_initialized = false; int AOTLib::_narrow_oop_shift = 0; int AOTLib::_narrow_klass_shift = 0; address AOTLib::load_symbol(const char *name) { address symbol = (address) os::dll_lookup(_dl_handle, name); if (symbol == NULL) { tty->print_cr("Shared file %s error: missing %s", _name, name); vm_exit(1); } return symbol; } Klass* AOTCodeHeap::get_klass_from_got(const char* klass_name, int klass_len, const Method* method) { AOTKlassData* klass_data = (AOTKlassData*)_lib->load_symbol(klass_name); Klass* k = (Klass*)_klasses_got[klass_data->_got_index]; if (k == NULL) { Thread* thread = Thread::current(); k = lookup_klass(klass_name, klass_len, method, thread); // Note, exceptions are cleared. if (k == NULL) { fatal("Shared file %s error: klass %s should be resolved already", _lib->name(), klass_name); vm_exit(1); } // Patch now to avoid extra runtime lookup _klasses_got[klass_data->_got_index] = k; if (k->is_instance_klass()) { InstanceKlass* ik = InstanceKlass::cast(k); if (ik->is_initialized()) { _klasses_got[klass_data->_got_index - 1] = ik; } } } return k; } Klass* AOTCodeHeap::lookup_klass(const char* name, int len, const Method* method, Thread* thread) { ResourceMark rm(thread); assert(method != NULL, "incorrect call parameter"); methodHandle caller(thread, (Method*)method); // Use class loader of aot method. Handle loader(thread, caller->method_holder()->class_loader()); Handle protection_domain(thread, caller->method_holder()->protection_domain()); // Ignore wrapping L and ; if (name[0] == JVM_SIGNATURE_CLASS) { assert(len > 2, "small name %s", name); name++; len -= 2; } TempNewSymbol sym = SymbolTable::probe(name, len); if (sym == NULL) { log_debug(aot, class, resolve)("Probe failed for AOT class %s", name); return NULL; } Klass* k = SystemDictionary::find_instance_or_array_klass(sym, loader, protection_domain, thread); assert(!thread->has_pending_exception(), "should not throw"); if (k != NULL) { log_info(aot, class, resolve)("%s %s (lookup)", caller->method_holder()->external_name(), k->external_name()); } return k; } void AOTLib::handle_config_error(const char* format, ...) { if (PrintAOT) { va_list ap; va_start(ap, format); tty->vprint_cr(format, ap); va_end(ap); } if (UseAOTStrictLoading) { vm_exit(1); } _valid = false; } void AOTLib::verify_flag(bool aot_flag, bool flag, const char* name) { if (_valid && aot_flag != flag) { handle_config_error("Shared file %s error: %s has different value '%s' from current '%s'", _name, name , (aot_flag ? "true" : "false"), (flag ? "true" : "false")); } } void AOTLib::verify_flag(int aot_flag, int flag, const char* name) { if (_valid && aot_flag != flag) { handle_config_error("Shared file %s error: %s has different value '%d' from current '%d'", _name, name , aot_flag, flag); } } void AOTLib::verify_config() { GrowableArray* libraries = AOTLoader::libraries(); for (GrowableArrayIterator lib = libraries->begin(); lib != libraries->end(); ++lib) { if ((*lib)->_config == _config) { handle_config_error("AOT library %s already loaded.", (*lib)->_name); return; } } if (_header->_version != AOTHeader::AOT_SHARED_VERSION) { handle_config_error("Invalid version of the shared file %s. Expected %d but was %d", _name, _header->_version, AOTHeader::AOT_SHARED_VERSION); return; } const char* aot_jvm_version = (const char*)_header + _header->_jvm_version_offset + 2; if (strcmp(aot_jvm_version, VM_Version::jre_release_version()) != 0) { handle_config_error("JVM version '%s' recorded in the shared file %s does not match current version '%s'", aot_jvm_version, _name, VM_Version::jre_release_version()); return; } // Debug VM has different layout of runtime and metadata structures #ifdef ASSERT verify_flag(_config->_debug_VM, true, "Debug VM version"); #else verify_flag(!(_config->_debug_VM), true, "Product VM version"); #endif // Check configuration size verify_flag(_config->_config_size, AOTConfiguration::CONFIG_SIZE, "AOT configuration size"); // Check GC CollectedHeap::Name gc = (CollectedHeap::Name)_config->_gc; if (_valid && !GCConfig::is_gc_selected(gc)) { handle_config_error("Shared file %s error: used '%s' is different from current '%s'", _name, GCConfig::hs_err_name(gc), GCConfig::hs_err_name()); } // Check flags verify_flag(_config->_useCompressedOops, UseCompressedOops, "UseCompressedOops"); verify_flag(_config->_useCompressedClassPointers, UseCompressedClassPointers, "UseCompressedClassPointers"); verify_flag(_config->_useTLAB, UseTLAB, "UseTLAB"); verify_flag(_config->_useBiasedLocking, UseBiasedLocking, "UseBiasedLocking"); verify_flag(_config->_objectAlignment, ObjectAlignmentInBytes, "ObjectAlignmentInBytes"); verify_flag(_config->_contendedPaddingWidth, ContendedPaddingWidth, "ContendedPaddingWidth"); verify_flag(_config->_enableContended, EnableContended, "EnableContended"); verify_flag(_config->_restrictContended, RestrictContended, "RestrictContended"); if (!TieredCompilation && _config->_tieredAOT) { handle_config_error("Shared file %s error: Expected to run with tiered compilation on", _name); } // Shifts are static values which initialized by 0 until java heap initialization. // AOT libs are loaded before heap initialized so shift values are not set. // It is okay since ObjectAlignmentInBytes flag which defines shifts value is set before AOT libs are loaded. // Set shifts value based on first AOT library config. if (UseCompressedOops && _valid) { if (!_narrow_oop_shift_initialized) { _narrow_oop_shift = _config->_narrowOopShift; if (UseCompressedClassPointers) { // It is set only if UseCompressedOops is set _narrow_klass_shift = _config->_narrowKlassShift; } _narrow_oop_shift_initialized = true; } else { verify_flag(_config->_narrowOopShift, _narrow_oop_shift, "aot_config->_narrowOopShift"); if (UseCompressedClassPointers) { // It is set only if UseCompressedOops is set verify_flag(_config->_narrowKlassShift, _narrow_klass_shift, "aot_config->_narrowKlassShift"); } } } } AOTLib::~AOTLib() { os::free((void*) _name); } AOTCodeHeap::~AOTCodeHeap() { FREE_C_HEAP_ARRAY(AOTClass, _classes); FREE_C_HEAP_ARRAY(CodeToAMethod, _code_to_aot); } AOTLib::AOTLib(void* handle, const char* name, int dso_id) : _valid(true), _dl_handle(handle), _dso_id(dso_id) { _name = (const char*) os::strdup(name); // Verify that VM runs with the same parameters as AOT tool. _config = (AOTConfiguration*) load_symbol("A.config"); _header = (AOTHeader*) load_symbol("A.header"); verify_config(); if (!_valid && PrintAOT) { tty->print("%7d ", (int) tty->time_stamp().milliseconds()); tty->print_cr("%4d skipped %s aot library", _dso_id, _name); } } AOTCodeHeap::AOTCodeHeap(AOTLib* lib) : CodeHeap("CodeHeap 'AOT'", CodeBlobType::AOT), _lib(lib), _classes(NULL), _code_to_aot(NULL) { assert(_lib->is_valid(), "invalid library"); _lib_symbols_initialized = false; _aot_id = 0; _class_count = _lib->header()->_class_count; _method_count = _lib->header()->_method_count; // Collect metaspace info: names -> address in .got section _metaspace_names = (const char*) _lib->load_symbol("A.meta.names"); _method_metadata = (address) _lib->load_symbol("A.meth.metadata"); _methods_offsets = (address) _lib->load_symbol("A.meth.offsets"); _klasses_offsets = (address) _lib->load_symbol("A.kls.offsets"); _dependencies = (address) _lib->load_symbol("A.kls.dependencies"); _code_space = (address) _lib->load_symbol("A.text"); // First cell is number of elements. _klasses_got = (Metadata**) _lib->load_symbol("A.kls.got"); _klasses_got_size = _lib->header()->_klasses_got_size; _metadata_got = (Metadata**) _lib->load_symbol("A.meta.got"); _metadata_got_size = _lib->header()->_metadata_got_size; _oop_got = (oop*) _lib->load_symbol("A.oop.got"); _oop_got_size = _lib->header()->_oop_got_size; // Collect stubs info _stubs_offsets = (int*) _lib->load_symbol("A.stubs.offsets"); // code segments table _code_segments = (address) _lib->load_symbol("A.code.segments"); // method state _method_state = (jlong*) _lib->load_symbol("A.meth.state"); // Create a table for mapping classes _classes = NEW_C_HEAP_ARRAY(AOTClass, _class_count, mtCode); memset(_classes, 0, _class_count * sizeof(AOTClass)); // Create table for searching AOTCompiledMethod based on pc. _code_to_aot = NEW_C_HEAP_ARRAY(CodeToAMethod, _method_count, mtCode); memset(_code_to_aot, 0, _method_count * sizeof(CodeToAMethod)); _memory.set_low_boundary((char *)_code_space); _memory.set_high_boundary((char *)_code_space); _memory.set_low((char *)_code_space); _memory.set_high((char *)_code_space); _segmap.set_low_boundary((char *)_code_segments); _segmap.set_low((char *)_code_segments); _log2_segment_size = exact_log2(_lib->config()->_codeSegmentSize); // Register aot stubs register_stubs(); if (PrintAOT || (PrintCompilation && PrintAOT)) { tty->print("%7d ", (int) tty->time_stamp().milliseconds()); tty->print_cr("%4d loaded %s aot library", _lib->id(), _lib->name()); } } void AOTCodeHeap::publish_aot(const methodHandle& mh, AOTMethodData* method_data, int code_id) { // The method may be explicitly excluded by the user. // Or Interpreter uses an intrinsic for this method. // Or method has breakpoints. if (CompilerOracle::should_exclude(mh) || !AbstractInterpreter::can_be_compiled(mh) || (mh->number_of_breakpoints() > 0)) { return; } // Make sure no break points were set in the method in case of a safepoint // in the following code until aot code is registered. NoSafepointVerifier nsv; address code = method_data->_code; const char* name = method_data->_name; aot_metadata* meta = method_data->_meta; if (meta->scopes_pcs_begin() == meta->scopes_pcs_end()) { // Switch off NoSafepointVerifier because log_info() may cause safepoint // and it is fine because aot code will not be registered here. PauseNoSafepointVerifier pnsv(&nsv); // When the AOT compiler compiles something big we fail to generate metadata // in CodeInstaller::gather_metadata. In that case the scopes_pcs_begin == scopes_pcs_end. // In all successful cases we always have 2 entries of scope pcs. log_info(aot, class, resolve)("Failed to load %s (no metadata available)", mh->name_and_sig_as_C_string()); _code_to_aot[code_id]._state = invalid; return; } jlong* state_adr = &_method_state[code_id]; address metadata_table = method_data->_metadata_table; int metadata_size = method_data->_metadata_size; assert(code_id < _method_count, "sanity"); _aot_id++; #ifdef ASSERT if (_aot_id > CIStop || _aot_id < CIStart) { // Skip compilation return; } #endif // Check one more time. if (_code_to_aot[code_id]._state == invalid) { return; } AOTCompiledMethod *aot = new AOTCompiledMethod(code, mh(), meta, metadata_table, metadata_size, state_adr, this, name, code_id, _aot_id); assert(_code_to_aot[code_id]._aot == NULL, "should be not initialized"); _code_to_aot[code_id]._aot = aot; // Should set this first if (Atomic::cmpxchg(&_code_to_aot[code_id]._state, not_set, in_use) != not_set) { _code_to_aot[code_id]._aot = NULL; // Clean } else { // success // Publish method #ifdef TIERED mh->set_aot_code(aot); #endif { MutexLocker pl(CompiledMethod_lock, Mutex::_no_safepoint_check_flag); Method::set_code(mh, aot); } if (PrintAOT || (PrintCompilation && PrintAOT)) { PauseNoSafepointVerifier pnsv(&nsv); // aot code is registered already aot->print_on(tty, NULL); } // Publish oop only after we are visible to CompiledMethodIterator aot->set_oop(mh()->method_holder()->klass_holder()); } } void AOTCodeHeap::link_primitive_array_klasses() { ResourceMark rm; for (int i = T_BOOLEAN; i <= T_CONFLICT; i++) { BasicType t = (BasicType)i; if (is_java_primitive(t)) { const Klass* arr_klass = Universe::typeArrayKlassObj(t); AOTKlassData* klass_data = (AOTKlassData*) os::dll_lookup(_lib->dl_handle(), arr_klass->signature_name()); if (klass_data != NULL) { // Set both GOT cells, resolved and initialized klass pointers. // _got_index points to second cell - resolved klass pointer. _klasses_got[klass_data->_got_index-1] = (Metadata*)arr_klass; // Initialized _klasses_got[klass_data->_got_index ] = (Metadata*)arr_klass; // Resolved if (PrintAOT) { tty->print_cr("[Found %s in %s]", arr_klass->internal_name(), _lib->name()); } } } } } void AOTCodeHeap::register_stubs() { int stubs_count = _stubs_offsets[0]; // contains number _stubs_offsets++; AOTMethodOffsets* stub_offsets = (AOTMethodOffsets*)_stubs_offsets; for (int i = 0; i < stubs_count; ++i) { const char* stub_name = _metaspace_names + stub_offsets[i]._name_offset; address entry = _code_space + stub_offsets[i]._code_offset; aot_metadata* meta = (aot_metadata *) (_method_metadata + stub_offsets[i]._meta_offset); address metadata_table = (address)_metadata_got + stub_offsets[i]._metadata_got_offset; int metadata_size = stub_offsets[i]._metadata_got_size; int code_id = stub_offsets[i]._code_id; assert(code_id < _method_count, "sanity"); jlong* state_adr = &_method_state[code_id]; int len = Bytes::get_Java_u2((address)stub_name); stub_name += 2; char* full_name = NEW_C_HEAP_ARRAY(char, len+5, mtCode); memcpy(full_name, "AOT ", 4); memcpy(full_name+4, stub_name, len); full_name[len+4] = 0; guarantee(_code_to_aot[code_id]._state != invalid, "stub %s can't be invalidated", full_name); AOTCompiledMethod* aot = new AOTCompiledMethod(entry, NULL, meta, metadata_table, metadata_size, state_adr, this, full_name, code_id, i); assert(_code_to_aot[code_id]._aot == NULL, "should be not initialized"); _code_to_aot[code_id]._aot = aot; if (Atomic::cmpxchg(&_code_to_aot[code_id]._state, not_set, in_use) != not_set) { fatal("stab '%s' code state is %d", full_name, _code_to_aot[code_id]._state); } // Adjust code buffer boundaries only for stubs because they are last in the buffer. adjust_boundaries(aot); if (PrintAOT && Verbose) { aot->print_on(tty, NULL); } } } #define SET_AOT_GLOBAL_SYMBOL_VALUE(AOTSYMNAME, AOTSYMTYPE, VMSYMVAL) \ { \ AOTSYMTYPE * adr = (AOTSYMTYPE *) os::dll_lookup(_lib->dl_handle(), AOTSYMNAME); \ /* Check for a lookup error */ \ guarantee(adr != NULL, "AOT Symbol not found %s", AOTSYMNAME); \ *adr = (AOTSYMTYPE) VMSYMVAL; \ } void AOTCodeHeap::link_graal_runtime_symbols() { SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_monitorenter", address, JVMCIRuntime::monitorenter); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_monitorexit", address, JVMCIRuntime::monitorexit); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_log_object", address, JVMCIRuntime::log_object); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_log_printf", address, JVMCIRuntime::log_printf); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_log_primitive", address, JVMCIRuntime::log_primitive); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_new_instance", address, JVMCIRuntime::new_instance); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_new_array", address, JVMCIRuntime::new_array); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_new_multi_array", address, JVMCIRuntime::new_multi_array); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_dynamic_new_instance", address, JVMCIRuntime::dynamic_new_instance); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_dynamic_new_array", address, JVMCIRuntime::dynamic_new_array); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_new_instance_or_null", address, JVMCIRuntime::new_instance_or_null); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_new_array_or_null", address, JVMCIRuntime::new_array_or_null); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_new_multi_array_or_null", address, JVMCIRuntime::new_multi_array_or_null); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_dynamic_new_instance_or_null", address, JVMCIRuntime::dynamic_new_instance_or_null); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_dynamic_new_array_or_null", address, JVMCIRuntime::dynamic_new_array_or_null); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_validate_object", address, JVMCIRuntime::validate_object); #if INCLUDE_G1GC SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_write_barrier_pre", address, JVMCIRuntime::write_barrier_pre); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_write_barrier_post", address, JVMCIRuntime::write_barrier_post); #endif SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_identity_hash_code", address, JVMCIRuntime::identity_hash_code); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_exception_handler_for_pc", address, JVMCIRuntime::exception_handler_for_pc); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_test_deoptimize_call_int", address, JVMCIRuntime::test_deoptimize_call_int); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_throw_and_post_jvmti_exception", address, JVMCIRuntime::throw_and_post_jvmti_exception); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_throw_klass_external_name_exception", address, JVMCIRuntime::throw_klass_external_name_exception); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_throw_class_cast_exception", address, JVMCIRuntime::throw_class_cast_exception); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_vm_message", address, JVMCIRuntime::vm_message); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_jvmci_runtime_vm_error", address, JVMCIRuntime::vm_error); } void AOTCodeHeap::link_shared_runtime_symbols() { SET_AOT_GLOBAL_SYMBOL_VALUE("_resolve_static_entry", address, SharedRuntime::get_resolve_static_call_stub()); SET_AOT_GLOBAL_SYMBOL_VALUE("_resolve_virtual_entry", address, SharedRuntime::get_resolve_virtual_call_stub()); SET_AOT_GLOBAL_SYMBOL_VALUE("_resolve_opt_virtual_entry", address, SharedRuntime::get_resolve_opt_virtual_call_stub()); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_deopt_blob_unpack", address, SharedRuntime::deopt_blob()->unpack()); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_deopt_blob_unpack_with_exception_in_tls", address, SharedRuntime::deopt_blob()->unpack_with_exception_in_tls()); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_deopt_blob_uncommon_trap", address, SharedRuntime::deopt_blob()->uncommon_trap()); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_ic_miss_stub", address, SharedRuntime::get_ic_miss_stub()); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_handle_wrong_method_stub", address, SharedRuntime::get_handle_wrong_method_stub()); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_exception_handler_for_return_address", address, SharedRuntime::exception_handler_for_return_address); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_register_finalizer", address, SharedRuntime::register_finalizer); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_object_notify", address, JVMCIRuntime::object_notify); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_object_notifyAll", address, JVMCIRuntime::object_notifyAll); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_OSR_migration_end", address, SharedRuntime::OSR_migration_end); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_enable_stack_reserved_zone", address, SharedRuntime::enable_stack_reserved_zone); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_resolve_dynamic_invoke", address, CompilerRuntime::resolve_dynamic_invoke); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_resolve_string_by_symbol", address, CompilerRuntime::resolve_string_by_symbol); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_resolve_klass_by_symbol", address, CompilerRuntime::resolve_klass_by_symbol); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_resolve_method_by_symbol_and_load_counters", address, CompilerRuntime::resolve_method_by_symbol_and_load_counters); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_initialize_klass_by_symbol", address, CompilerRuntime::initialize_klass_by_symbol); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_invocation_event", address, CompilerRuntime::invocation_event); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_backedge_event", address, CompilerRuntime::backedge_event); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_shared_runtime_dpow", address, SharedRuntime::dpow); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_shared_runtime_dexp", address, SharedRuntime::dexp); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_shared_runtime_dcos", address, SharedRuntime::dcos); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_shared_runtime_dsin", address, SharedRuntime::dsin); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_shared_runtime_dtan", address, SharedRuntime::dtan); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_shared_runtime_dlog", address, SharedRuntime::dlog); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_shared_runtime_dlog10", address, SharedRuntime::dlog10); } void AOTCodeHeap::link_stub_routines_symbols() { SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jbyte_arraycopy", address, StubRoutines::_jbyte_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jshort_arraycopy", address, StubRoutines::_jshort_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jint_arraycopy", address, StubRoutines::_jint_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jlong_arraycopy", address, StubRoutines::_jlong_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_oop_arraycopy", address, StubRoutines::_oop_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_oop_arraycopy_uninit", address, StubRoutines::_oop_arraycopy_uninit); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jbyte_disjoint_arraycopy", address, StubRoutines::_jbyte_disjoint_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jshort_disjoint_arraycopy", address, StubRoutines::_jshort_disjoint_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jint_disjoint_arraycopy", address, StubRoutines::_jint_disjoint_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_jlong_disjoint_arraycopy", address, StubRoutines::_jlong_disjoint_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_oop_disjoint_arraycopy", address, StubRoutines::_oop_disjoint_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_oop_disjoint_arraycopy_uninit", address, StubRoutines::_oop_disjoint_arraycopy_uninit); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jbyte_arraycopy", address, StubRoutines::_arrayof_jbyte_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jshort_arraycopy", address, StubRoutines::_arrayof_jshort_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jint_arraycopy", address, StubRoutines::_arrayof_jint_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jlong_arraycopy", address, StubRoutines::_arrayof_jlong_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_oop_arraycopy", address, StubRoutines::_arrayof_oop_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_oop_arraycopy_uninit", address, StubRoutines::_arrayof_oop_arraycopy_uninit); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jbyte_disjoint_arraycopy", address, StubRoutines::_arrayof_jbyte_disjoint_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jshort_disjoint_arraycopy", address, StubRoutines::_arrayof_jshort_disjoint_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jint_disjoint_arraycopy", address, StubRoutines::_arrayof_jint_disjoint_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_jlong_disjoint_arraycopy", address, StubRoutines::_arrayof_jlong_disjoint_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_oop_disjoint_arraycopy", address, StubRoutines::_arrayof_oop_disjoint_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_arrayof_oop_disjoint_arraycopy_uninit", address, StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_unsafe_arraycopy", address, StubRoutines::_unsafe_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_checkcast_arraycopy", address, StubRoutines::_checkcast_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_generic_arraycopy", address, StubRoutines::_generic_arraycopy); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_aescrypt_encryptBlock", address, StubRoutines::_aescrypt_encryptBlock); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_aescrypt_decryptBlock", address, StubRoutines::_aescrypt_decryptBlock); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_cipherBlockChaining_encryptAESCrypt", address, StubRoutines::_cipherBlockChaining_encryptAESCrypt); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_cipherBlockChaining_decryptAESCrypt", address, StubRoutines::_cipherBlockChaining_decryptAESCrypt); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_electronicCodeBook_encryptAESCrypt", address, StubRoutines::_electronicCodeBook_encryptAESCrypt); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_electronicCodeBook_decryptAESCrypt", address, StubRoutines::_electronicCodeBook_decryptAESCrypt); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_update_bytes_crc32", address, StubRoutines::_updateBytesCRC32); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_crc_table_adr", address, StubRoutines::_crc_table_adr); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_sha1_implCompress", address, StubRoutines::_sha1_implCompress); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_sha1_implCompressMB", address, StubRoutines::_sha1_implCompressMB); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_sha256_implCompress", address, StubRoutines::_sha256_implCompress); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_sha256_implCompressMB", address, StubRoutines::_sha256_implCompressMB); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_sha512_implCompress", address, StubRoutines::_sha512_implCompress); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_sha512_implCompressMB", address, StubRoutines::_sha512_implCompressMB); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_multiplyToLen", address, StubRoutines::_multiplyToLen); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_counterMode_AESCrypt", address, StubRoutines::_counterMode_AESCrypt); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_ghash_processBlocks", address, StubRoutines::_ghash_processBlocks); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_base64_encodeBlock", address, StubRoutines::_base64_encodeBlock); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_crc32c_table_addr", address, StubRoutines::_crc32c_table_addr); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_updateBytesCRC32C", address, StubRoutines::_updateBytesCRC32C); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_updateBytesAdler32", address, StubRoutines::_updateBytesAdler32); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_squareToLen", address, StubRoutines::_squareToLen); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_mulAdd", address, StubRoutines::_mulAdd); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_montgomeryMultiply", address, StubRoutines::_montgomeryMultiply); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_montgomerySquare", address, StubRoutines::_montgomerySquare); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_vectorizedMismatch", address, StubRoutines::_vectorizedMismatch); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_bigIntegerRightShiftWorker", address, StubRoutines::_bigIntegerRightShiftWorker); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_bigIntegerLeftShiftWorker", address, StubRoutines::_bigIntegerLeftShiftWorker); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_stub_routines_throw_delayed_StackOverflowError_entry", address, StubRoutines::_throw_delayed_StackOverflowError_entry); } void AOTCodeHeap::link_os_symbols() { SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_os_javaTimeMillis", address, os::javaTimeMillis); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_os_javaTimeNanos", address, os::javaTimeNanos); } /* * Link any global symbols in precompiled DSO with dlopen() _dl_handle * dso_handle. */ void AOTCodeHeap::link_global_lib_symbols() { if (!_lib_symbols_initialized) { _lib_symbols_initialized = true; CollectedHeap* heap = Universe::heap(); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_card_table_address", address, (BarrierSet::barrier_set()->is_a(BarrierSet::CardTableBarrierSet) ? ci_card_table_address() : NULL)); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_heap_top_address", address, (heap->supports_inline_contig_alloc() ? heap->top_addr() : NULL)); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_heap_end_address", address, (heap->supports_inline_contig_alloc() ? heap->end_addr() : NULL)); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_polling_page", address, os::get_polling_page()); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_narrow_klass_base_address", address, CompressedKlassPointers::base()); SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_narrow_oop_base_address", address, CompressedOops::base()); #if INCLUDE_G1GC SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_log_of_heap_region_grain_bytes", int, HeapRegion::LogOfHRGrainBytes); #endif SET_AOT_GLOBAL_SYMBOL_VALUE("_aot_inline_contiguous_allocation_supported", bool, heap->supports_inline_contig_alloc()); link_shared_runtime_symbols(); link_stub_routines_symbols(); link_os_symbols(); link_graal_runtime_symbols(); // Link primitive array klasses. link_primitive_array_klasses(); } } #ifndef PRODUCT int AOTCodeHeap::klasses_seen = 0; int AOTCodeHeap::aot_klasses_found = 0; int AOTCodeHeap::aot_klasses_fp_miss = 0; int AOTCodeHeap::aot_klasses_cl_miss = 0; int AOTCodeHeap::aot_methods_found = 0; void AOTCodeHeap::print_statistics() { tty->print_cr("Classes seen: %d AOT classes found: %d AOT methods found: %d", klasses_seen, aot_klasses_found, aot_methods_found); tty->print_cr("AOT fingerprint mismatches: %d AOT class loader mismatches: %d", aot_klasses_fp_miss, aot_klasses_cl_miss); } #endif Method* AOTCodeHeap::find_method(Klass* klass, Thread* thread, const char* method_name) { int method_name_len = Bytes::get_Java_u2((address)method_name); method_name += 2; const char* signature_name = method_name + method_name_len; int signature_name_len = Bytes::get_Java_u2((address)signature_name); signature_name += 2; // The class should have been loaded so the method and signature should already be // in the symbol table. If they're not there, the method doesn't exist. TempNewSymbol name = SymbolTable::probe(method_name, method_name_len); TempNewSymbol signature = SymbolTable::probe(signature_name, signature_name_len); Method* m; if (name == NULL || signature == NULL) { m = NULL; } else if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) { // Never search superclasses for constructors if (klass->is_instance_klass()) { m = InstanceKlass::cast(klass)->find_method(name, signature); } else { m = NULL; } } else { m = klass->lookup_method(name, signature); if (m == NULL && klass->is_instance_klass()) { m = InstanceKlass::cast(klass)->lookup_method_in_ordered_interfaces(name, signature); } } if (m == NULL) { // Fatal error because we assume classes and methods should not be changed since aot compilation. const char* klass_name = klass->external_name(); int klass_len = (int)strlen(klass_name); char* meta_name = NEW_RESOURCE_ARRAY(char, klass_len + 1 + method_name_len + signature_name_len + 1); memcpy(meta_name, klass_name, klass_len); meta_name[klass_len] = '.'; memcpy(&meta_name[klass_len + 1], method_name, method_name_len); memcpy(&meta_name[klass_len + 1 + method_name_len], signature_name, signature_name_len); meta_name[klass_len + 1 + method_name_len + signature_name_len] = '\0'; Handle exception = Exceptions::new_exception(thread, vmSymbols::java_lang_NoSuchMethodError(), meta_name); java_lang_Throwable::print(exception(), tty); tty->cr(); java_lang_Throwable::print_stack_trace(exception, tty); tty->cr(); fatal("Failed to find method '%s'", meta_name); } NOT_PRODUCT( aot_methods_found++; ) return m; } AOTKlassData* AOTCodeHeap::find_klass(const char *name) { return (AOTKlassData*) os::dll_lookup(_lib->dl_handle(), name); } AOTKlassData* AOTCodeHeap::find_klass(InstanceKlass* ik) { ResourceMark rm; AOTKlassData* klass_data = find_klass(ik->signature_name()); return klass_data; } bool AOTCodeHeap::is_dependent_method(Klass* dependee, AOTCompiledMethod* aot) { InstanceKlass *dependee_ik = InstanceKlass::cast(dependee); AOTKlassData* klass_data = find_klass(dependee_ik); if (klass_data == NULL) { return false; // no AOT records for this class - no dependencies } if (!dependee_ik->has_passed_fingerprint_check()) { return false; // different class } int methods_offset = klass_data->_dependent_methods_offset; if (methods_offset >= 0) { address methods_cnt_adr = _dependencies + methods_offset; int methods_cnt = *(int*)methods_cnt_adr; int* indexes = (int*)(methods_cnt_adr + 4); for (int i = 0; i < methods_cnt; ++i) { int code_id = indexes[i]; if (_code_to_aot[code_id]._aot == aot) { return true; // found dependent method } } } return false; } void AOTCodeHeap::mark_evol_dependent_methods(InstanceKlass* dependee) { AOTKlassData* klass_data = find_klass(dependee); if (klass_data == NULL) { return; // no AOT records for this class - no dependencies } if (!dependee->has_passed_fingerprint_check()) { return; // different class } int methods_offset = klass_data->_dependent_methods_offset; if (methods_offset >= 0) { address methods_cnt_adr = _dependencies + methods_offset; int methods_cnt = *(int*)methods_cnt_adr; int* indexes = (int*)(methods_cnt_adr + 4); for (int i = 0; i < methods_cnt; ++i) { int code_id = indexes[i]; AOTCompiledMethod* aot = _code_to_aot[code_id]._aot; if (aot != NULL) { aot->mark_for_deoptimization(false); } } } } void AOTCodeHeap::sweep_dependent_methods(int* indexes, int methods_cnt) { int marked = 0; for (int i = 0; i < methods_cnt; ++i) { int code_id = indexes[i]; // Invalidate aot code. if (Atomic::cmpxchg(&_code_to_aot[code_id]._state, not_set, invalid) != not_set) { if (_code_to_aot[code_id]._state == in_use) { AOTCompiledMethod* aot = _code_to_aot[code_id]._aot; assert(aot != NULL, "aot should be set"); if (!aot->is_runtime_stub()) { // Something is wrong - should not invalidate stubs. aot->mark_for_deoptimization(false); marked++; } } } } if (marked > 0) { Deoptimization::deoptimize_all_marked(); } } void AOTCodeHeap::sweep_dependent_methods(AOTKlassData* klass_data) { // Make dependent methods non_entrant forever. int methods_offset = klass_data->_dependent_methods_offset; if (methods_offset >= 0) { address methods_cnt_adr = _dependencies + methods_offset; int methods_cnt = *(int*)methods_cnt_adr; int* indexes = (int*)(methods_cnt_adr + 4); sweep_dependent_methods(indexes, methods_cnt); } } void AOTCodeHeap::sweep_dependent_methods(InstanceKlass* ik) { AOTKlassData* klass_data = find_klass(ik); vmassert(klass_data != NULL, "dependency data missing"); sweep_dependent_methods(klass_data); } void AOTCodeHeap::sweep_method(AOTCompiledMethod *aot) { int indexes[] = {aot->method_index()}; sweep_dependent_methods(indexes, 1); vmassert(aot->method()->code() != aot TIERED_ONLY( && aot->method()->aot_code() == NULL), "method still active"); } bool AOTCodeHeap::load_klass_data(InstanceKlass* ik, Thread* thread) { ResourceMark rm; NOT_PRODUCT( klasses_seen++; ) // AOT does not support custom class loaders. ClassLoaderData* cld = ik->class_loader_data(); if (!cld->is_builtin_class_loader_data()) { log_trace(aot, class, load)("skip class %s for custom classloader %s (%p) tid=" INTPTR_FORMAT, ik->internal_name(), cld->loader_name(), cld, p2i(thread)); return false; } AOTKlassData* klass_data = find_klass(ik); if (klass_data == NULL) { return false; } if (!ik->has_passed_fingerprint_check()) { NOT_PRODUCT( aot_klasses_fp_miss++; ) log_trace(aot, class, fingerprint)("class %s%s has bad fingerprint in %s tid=" INTPTR_FORMAT, ik->internal_name(), ik->is_shared() ? " (shared)" : "", _lib->name(), p2i(thread)); sweep_dependent_methods(klass_data); return false; } if (ik->has_been_redefined()) { log_trace(aot, class, load)("class %s%s in %s has been redefined tid=" INTPTR_FORMAT, ik->internal_name(), ik->is_shared() ? " (shared)" : "", _lib->name(), p2i(thread)); sweep_dependent_methods(klass_data); return false; } assert(klass_data->_class_id < _class_count, "invalid class id"); AOTClass* aot_class = &_classes[klass_data->_class_id]; ClassLoaderData* aot_cld = aot_class->_classloader; if (aot_cld != NULL && aot_cld != cld) { log_trace(aot, class, load)("class %s in %s already loaded for classloader %s (%p) vs %s (%p) tid=" INTPTR_FORMAT, ik->internal_name(), _lib->name(), aot_cld->loader_name(), aot_cld, cld->loader_name(), cld, p2i(thread)); NOT_PRODUCT( aot_klasses_cl_miss++; ) return false; } if (_lib->config()->_omitAssertions && JavaAssertions::enabled(ik->name()->as_C_string(), ik->class_loader() == NULL)) { log_trace(aot, class, load)("class %s in %s does not have java assertions in compiled code, but assertions are enabled for this execution.", ik->internal_name(), _lib->name()); sweep_dependent_methods(klass_data); return false; } NOT_PRODUCT( aot_klasses_found++; ) log_trace(aot, class, load)("found %s in %s for classloader %s (%p) tid=" INTPTR_FORMAT, ik->internal_name(), _lib->name(), cld->loader_name(), cld, p2i(thread)); aot_class->_classloader = cld; // Set klass's Resolve (second) got cell. _klasses_got[klass_data->_got_index] = ik; if (ik->is_initialized()) { _klasses_got[klass_data->_got_index - 1] = ik; } // Initialize global symbols of the DSO to the corresponding VM symbol values. link_global_lib_symbols(); int methods_offset = klass_data->_compiled_methods_offset; if (methods_offset >= 0) { address methods_cnt_adr = _methods_offsets + methods_offset; int methods_cnt = *(int*)methods_cnt_adr; // Collect data about compiled methods AOTMethodData* methods_data = NEW_RESOURCE_ARRAY(AOTMethodData, methods_cnt); AOTMethodOffsets* methods_offsets = (AOTMethodOffsets*)(methods_cnt_adr + 4); for (int i = 0; i < methods_cnt; ++i) { AOTMethodOffsets* method_offsets = &methods_offsets[i]; int code_id = method_offsets->_code_id; if (_code_to_aot[code_id]._state == invalid) { continue; // skip AOT methods slots which have been invalidated } AOTMethodData* method_data = &methods_data[i]; const char* aot_name = _metaspace_names + method_offsets->_name_offset; method_data->_name = aot_name; method_data->_code = _code_space + method_offsets->_code_offset; method_data->_meta = (aot_metadata*)(_method_metadata + method_offsets->_meta_offset); method_data->_metadata_table = (address)_metadata_got + method_offsets->_metadata_got_offset; method_data->_metadata_size = method_offsets->_metadata_got_size; // aot_name format: "Ljava/lang/ThreadGroup;addUnstarted()V" int klass_len = Bytes::get_Java_u2((address)aot_name); const char* method_name = aot_name + 2 + klass_len; Method* m = AOTCodeHeap::find_method(ik, thread, method_name); methodHandle mh(thread, m); if (mh->code() != NULL) { // Does it have already compiled code? continue; // Don't overwrite } publish_aot(mh, method_data, code_id); } } return true; } AOTCompiledMethod* AOTCodeHeap::next_in_use_at(int start) const { for (int index = start; index < _method_count; index++) { if (_code_to_aot[index]._state != in_use) { continue; // Skip uninitialized entries. } AOTCompiledMethod* aot = _code_to_aot[index]._aot; return aot; } return NULL; } void* AOTCodeHeap::first() const { return next_in_use_at(0); } void* AOTCodeHeap::next(void* p) const { AOTCompiledMethod *aot = (AOTCompiledMethod *)p; int next_index = aot->method_index() + 1; assert(next_index <= _method_count, ""); if (next_index == _method_count) { return NULL; } return next_in_use_at(next_index); } void* AOTCodeHeap::find_start(void* p) const { if (!contains(p)) { return NULL; } size_t offset = pointer_delta(p, low_boundary(), 1); // Use segments table size_t seg_idx = offset / _lib->config()->_codeSegmentSize; if ((int)(_code_segments[seg_idx]) == 0xff) { return NULL; } while (_code_segments[seg_idx] > 0) { seg_idx -= (int)_code_segments[seg_idx]; } int code_offset = (int)seg_idx * _lib->config()->_codeSegmentSize; int aot_index = *(int*)(_code_space + code_offset); AOTCompiledMethod* aot = _code_to_aot[aot_index]._aot; assert(aot != NULL, "should find registered aot method"); return aot; } AOTCompiledMethod* AOTCodeHeap::find_aot(address p) const { assert(contains(p), "should be here"); return (AOTCompiledMethod *)find_start(p); } CodeBlob* AOTCodeHeap::find_blob_unsafe(void* start) const { return (CodeBlob*)AOTCodeHeap::find_start(start); } void AOTCodeHeap::oops_do(OopClosure* f) { for (int i = 0; i < _oop_got_size; i++) { oop* p = &_oop_got[i]; if (*p == NULL) continue; // skip non-oops f->do_oop(p); } for (int index = 0; index < _method_count; index++) { if (_code_to_aot[index]._state != in_use) { continue; // Skip uninitialized entries. } AOTCompiledMethod* aot = _code_to_aot[index]._aot; aot->do_oops(f); } } // Scan only klasses_got cells which should have only Klass*, // metadata_got cells are scanned only for alive AOT methods // by AOTCompiledMethod::metadata_do(). void AOTCodeHeap::got_metadata_do(MetadataClosure* f) { for (int i = 1; i < _klasses_got_size; i++) { Metadata** p = &_klasses_got[i]; Metadata* md = *p; if (md == NULL) continue; // skip non-oops if (Metaspace::contains(md)) { f->do_metadata(md); } else { intptr_t meta = (intptr_t)md; fatal("Invalid value in _klasses_got[%d] = " INTPTR_FORMAT, i, meta); } } } void AOTCodeHeap::cleanup_inline_caches() { for (int index = 0; index < _method_count; index++) { if (_code_to_aot[index]._state != in_use) { continue; // Skip uninitialized entries. } AOTCompiledMethod* aot = _code_to_aot[index]._aot; aot->cleanup_inline_caches(false); } } #ifdef ASSERT int AOTCodeHeap::verify_icholder_relocations() { int count = 0; for (int index = 0; index < _method_count; index++) { if (_code_to_aot[index]._state != in_use) { continue; // Skip uninitialized entries. } AOTCompiledMethod* aot = _code_to_aot[index]._aot; count += aot->verify_icholder_relocations(); } return count; } #endif void AOTCodeHeap::metadata_do(MetadataClosure* f) { for (int index = 0; index < _method_count; index++) { if (_code_to_aot[index]._state != in_use) { continue; // Skip uninitialized entries. } AOTCompiledMethod* aot = _code_to_aot[index]._aot; if (aot->_is_alive()) { aot->metadata_do(f); } } // Scan klasses_got cells. got_metadata_do(f); } bool AOTCodeHeap::reconcile_dynamic_klass(AOTCompiledMethod *caller, InstanceKlass* holder, int index, Klass *dyno_klass, const char *descriptor1, const char *descriptor2) { const char * const descriptors[2] = {descriptor1, descriptor2}; JavaThread *thread = JavaThread::current(); ResourceMark rm(thread); AOTKlassData* holder_data = find_klass(holder); vmassert(holder_data != NULL, "klass %s not found", holder->signature_name()); vmassert(is_dependent_method(holder, caller), "sanity"); AOTKlassData* dyno_data = NULL; bool adapter_failed = false; char buf[64]; int descriptor_index = 0; // descriptors[0] specific name ("adapter:") for matching // descriptors[1] fall-back name ("adapter") for depdencies while (descriptor_index < 2) { const char *descriptor = descriptors[descriptor_index]; if (descriptor == NULL) { break; } jio_snprintf(buf, sizeof buf, "%s<%d:%d>", descriptor, holder_data->_class_id, index); dyno_data = find_klass(buf); if (dyno_data != NULL) { break; } // If match failed then try fall-back for dependencies ++descriptor_index; adapter_failed = true; } if (dyno_data == NULL && dyno_klass == NULL) { // all is well, no (appendix) at compile-time, and still none return true; } if (dyno_data == NULL) { // no (appendix) at build-time, but now there is sweep_dependent_methods(holder_data); return false; } if (adapter_failed) { // adapter method mismatch sweep_dependent_methods(holder_data); sweep_dependent_methods(dyno_data); return false; } if (dyno_klass == NULL) { // (appendix) at build-time, none now sweep_dependent_methods(holder_data); sweep_dependent_methods(dyno_data); return false; } // TODO: support array appendix object if (!dyno_klass->is_instance_klass()) { sweep_dependent_methods(holder_data); sweep_dependent_methods(dyno_data); return false; } InstanceKlass* dyno = InstanceKlass::cast(dyno_klass); if (!dyno->is_hidden() && !dyno->is_unsafe_anonymous()) { if (_klasses_got[dyno_data->_got_index] != dyno) { // compile-time class different from runtime class, fail and deoptimize sweep_dependent_methods(holder_data); sweep_dependent_methods(dyno_data); return false; } if (dyno->is_initialized()) { _klasses_got[dyno_data->_got_index - 1] = dyno; } return true; } // TODO: support anonymous supers if (!dyno->supers_have_passed_fingerprint_checks() || dyno->get_stored_fingerprint() != dyno_data->_fingerprint) { NOT_PRODUCT( aot_klasses_fp_miss++; ) log_trace(aot, class, fingerprint)("class %s%s has bad fingerprint in %s tid=" INTPTR_FORMAT, dyno->internal_name(), dyno->is_shared() ? " (shared)" : "", _lib->name(), p2i(thread)); sweep_dependent_methods(holder_data); sweep_dependent_methods(dyno_data); return false; } _klasses_got[dyno_data->_got_index] = dyno; if (dyno->is_initialized()) { _klasses_got[dyno_data->_got_index - 1] = dyno; } // TODO: hook up any AOT code // load_klass_data(dyno_data, thread); return true; } bool AOTCodeHeap::reconcile_dynamic_method(AOTCompiledMethod *caller, InstanceKlass* holder, int index, Method *adapter_method) { InstanceKlass *adapter_klass = adapter_method->method_holder(); char buf[64]; jio_snprintf(buf, sizeof buf, "adapter:%d", adapter_method->method_idnum()); if (!reconcile_dynamic_klass(caller, holder, index, adapter_klass, buf, "adapter")) { return false; } return true; } bool AOTCodeHeap::reconcile_dynamic_invoke(AOTCompiledMethod* caller, InstanceKlass* holder, int index, Method* adapter_method, Klass *appendix_klass) { if (!reconcile_dynamic_klass(caller, holder, index, appendix_klass, "appendix")) { return false; } if (!reconcile_dynamic_method(caller, holder, index, adapter_method)) { return false; } return true; }