author | herrick |
Fri, 18 Oct 2019 14:14:37 -0400 | |
branch | JDK-8200758-branch |
changeset 58696 | 61c44899b4eb |
parent 58282 | 03fce7b04b42 |
child 58679 | 9c3209ff7550 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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||
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#include "precompiled.hpp" |
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#include "aot/aotCodeHeap.hpp" |
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#include "aot/aotLoader.inline.hpp" |
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#include "classfile/javaClasses.hpp" |
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#include "jvm.h" |
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#include "memory/allocation.inline.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "oops/compressedOops.hpp" |
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#include "oops/method.hpp" |
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#include "runtime/handles.inline.hpp" |
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#include "runtime/os.inline.hpp" |
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#include "runtime/timerTrace.hpp" |
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GrowableArray<AOTCodeHeap*>* AOTLoader::_heaps = new(ResourceObj::C_HEAP, mtCode) GrowableArray<AOTCodeHeap*> (2, true); |
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GrowableArray<AOTLib*>* AOTLoader::_libraries = new(ResourceObj::C_HEAP, mtCode) GrowableArray<AOTLib*> (2, true); |
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// Iterate over all AOT CodeHeaps |
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#define FOR_ALL_AOT_HEAPS(heap) for (GrowableArrayIterator<AOTCodeHeap*> heap = heaps()->begin(); heap != heaps()->end(); ++heap) |
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// Iterate over all AOT Libraries |
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#define FOR_ALL_AOT_LIBRARIES(lib) for (GrowableArrayIterator<AOTLib*> lib = libraries()->begin(); lib != libraries()->end(); ++lib) |
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void AOTLoader::load_for_klass(InstanceKlass* ik, Thread* thread) { |
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if (ik->is_unsafe_anonymous()) { |
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// don't even bother |
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return; |
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} |
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if (UseAOT) { |
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// We allow hotswap to be enabled after the onload phase, but not breakpoints |
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assert(!JvmtiExport::can_post_breakpoint(), "AOT should have been disabled."); |
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FOR_ALL_AOT_HEAPS(heap) { |
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(*heap)->load_klass_data(ik, thread); |
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} |
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} |
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} |
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uint64_t AOTLoader::get_saved_fingerprint(InstanceKlass* ik) { |
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assert(UseAOT, "called only when AOT is enabled"); |
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if (ik->is_unsafe_anonymous()) { |
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// don't even bother |
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return 0; |
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} |
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FOR_ALL_AOT_HEAPS(heap) { |
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AOTKlassData* klass_data = (*heap)->find_klass(ik); |
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if (klass_data != NULL) { |
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return klass_data->_fingerprint; |
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} |
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} |
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return 0; |
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} |
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void AOTLoader::oops_do(OopClosure* f) { |
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if (UseAOT) { |
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FOR_ALL_AOT_HEAPS(heap) { |
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(*heap)->oops_do(f); |
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} |
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} |
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} |
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void AOTLoader::metadata_do(MetadataClosure* f) { |
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if (UseAOT) { |
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FOR_ALL_AOT_HEAPS(heap) { |
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(*heap)->metadata_do(f); |
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} |
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} |
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} |
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void AOTLoader::mark_evol_dependent_methods(InstanceKlass* dependee) { |
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if (UseAOT) { |
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FOR_ALL_AOT_HEAPS(heap) { |
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(*heap)->mark_evol_dependent_methods(dependee); |
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} |
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} |
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} |
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/** |
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* List of core modules for which we search for shared libraries. |
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*/ |
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static const char* modules[] = { |
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"java.base", |
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"java.logging", |
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"jdk.compiler", |
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"jdk.scripting.nashorn", |
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"jdk.internal.vm.ci", |
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"jdk.internal.vm.compiler" |
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}; |
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void AOTLoader::initialize() { |
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TraceTime timer("AOT initialization", TRACETIME_LOG(Info, aot, startuptime)); |
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if (FLAG_IS_DEFAULT(UseAOT) && AOTLibrary != NULL) { |
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// Don't need to set UseAOT on command line when AOTLibrary is specified |
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FLAG_SET_DEFAULT(UseAOT, true); |
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} |
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if (UseAOT) { |
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// EagerInitialization is not compatible with AOT |
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if (EagerInitialization) { |
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if (PrintAOT) { |
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warning("EagerInitialization is not compatible with AOT (switching AOT off)"); |
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} |
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FLAG_SET_DEFAULT(UseAOT, false); |
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return; |
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} |
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if (JvmtiExport::can_post_breakpoint()) { |
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if (PrintAOT) { |
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warning("JVMTI capability to post breakpoint is not compatible with AOT (switching AOT off)"); |
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} |
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FLAG_SET_DEFAULT(UseAOT, false); |
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return; |
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} |
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// -Xint is not compatible with AOT |
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if (Arguments::is_interpreter_only()) { |
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if (PrintAOT) { |
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warning("-Xint is not compatible with AOT (switching AOT off)"); |
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} |
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FLAG_SET_DEFAULT(UseAOT, false); |
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return; |
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} |
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#ifdef _WINDOWS |
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const char pathSep = ';'; |
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#else |
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const char pathSep = ':'; |
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#endif |
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// Scan the AOTLibrary option. |
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if (AOTLibrary != NULL) { |
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const int len = (int)strlen(AOTLibrary); |
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char* cp = NEW_C_HEAP_ARRAY(char, len+1, mtCode); |
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memcpy(cp, AOTLibrary, len); |
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cp[len] = '\0'; |
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char* end = cp + len; |
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while (cp < end) { |
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const char* name = cp; |
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while ((*cp) != '\0' && (*cp) != '\n' && (*cp) != ',' && (*cp) != pathSep) cp++; |
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cp[0] = '\0'; // Terminate name |
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cp++; |
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load_library(name, true); |
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} |
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} |
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// Load well-know AOT libraries from Java installation directory. |
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const char* home = Arguments::get_java_home(); |
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const char* file_separator = os::file_separator(); |
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for (int i = 0; i < (int) (sizeof(modules) / sizeof(const char*)); i++) { |
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char library[JVM_MAXPATHLEN]; |
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jio_snprintf(library, sizeof(library), "%s%slib%slib%s%s%s%s", home, file_separator, file_separator, modules[i], UseCompressedOops ? "-coop" : "", UseG1GC ? "" : "-nong1", os::dll_file_extension()); |
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load_library(library, false); |
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} |
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} |
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} |
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void AOTLoader::universe_init() { |
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if (UseAOT && libraries_count() > 0) { |
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// Shifts are static values which initialized by 0 until java heap initialization. |
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// AOT libs are loaded before heap initialized so shift values are not set. |
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// It is okay since ObjectAlignmentInBytes flag which defines shifts value is set before AOT libs are loaded. |
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// AOT sets shift values during heap and metaspace initialization. |
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// Check shifts value to make sure thay did not change. |
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if (UseCompressedOops && AOTLib::narrow_oop_shift_initialized()) { |
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int oop_shift = CompressedOops::shift(); |
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FOR_ALL_AOT_LIBRARIES(lib) { |
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(*lib)->verify_flag((*lib)->config()->_narrowOopShift, oop_shift, "CompressedOops::shift"); |
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} |
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if (UseCompressedClassPointers) { // It is set only if UseCompressedOops is set |
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int klass_shift = CompressedKlassPointers::shift(); |
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FOR_ALL_AOT_LIBRARIES(lib) { |
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(*lib)->verify_flag((*lib)->config()->_narrowKlassShift, klass_shift, "CompressedKlassPointers::shift"); |
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} |
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} |
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} |
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// Create heaps for all valid libraries |
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FOR_ALL_AOT_LIBRARIES(lib) { |
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if ((*lib)->is_valid()) { |
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AOTCodeHeap* heap = new AOTCodeHeap(*lib); |
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{ |
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MutexLocker mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
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add_heap(heap); |
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CodeCache::add_heap(heap); |
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} |
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} else { |
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// Unload invalid libraries |
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os::dll_unload((*lib)->dl_handle()); |
42650 | 209 |
} |
210 |
} |
|
211 |
} |
|
212 |
if (heaps_count() == 0) { |
|
213 |
if (FLAG_IS_DEFAULT(UseAOT)) { |
|
214 |
FLAG_SET_DEFAULT(UseAOT, false); |
|
215 |
} |
|
216 |
} |
|
217 |
} |
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218 |
||
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// Set shift value for compressed oops and classes based on first AOT library config. |
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// AOTLoader::universe_init(), which is called later, will check the shift value again to make sure nobody change it. |
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// This code is not executed during CDS dump because it runs in Interpreter mode and AOT is disabled in this mode. |
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222 |
|
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223 |
void AOTLoader::set_narrow_oop_shift() { |
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// This method is called from Universe::initialize_heap(). |
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if (UseAOT && libraries_count() > 0 && |
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UseCompressedOops && AOTLib::narrow_oop_shift_initialized()) { |
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if (CompressedOops::shift() == 0) { |
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// 0 is valid shift value for small heap but we can safely increase it |
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// at this point when nobody used it yet. |
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CompressedOops::set_shift(AOTLib::narrow_oop_shift()); |
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231 |
} |
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232 |
} |
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233 |
} |
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234 |
|
42650 | 235 |
void AOTLoader::set_narrow_klass_shift() { |
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236 |
// This method is called from Metaspace::set_narrow_klass_base_and_shift(). |
42650 | 237 |
if (UseAOT && libraries_count() > 0 && |
238 |
UseCompressedOops && AOTLib::narrow_oop_shift_initialized() && |
|
239 |
UseCompressedClassPointers) { |
|
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if (CompressedKlassPointers::shift() == 0) { |
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CompressedKlassPointers::set_shift(AOTLib::narrow_klass_shift()); |
42650 | 242 |
} |
243 |
} |
|
244 |
} |
|
245 |
||
246 |
void AOTLoader::load_library(const char* name, bool exit_on_error) { |
|
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// Skip library if a library with the same name is already loaded. |
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const int file_separator = *os::file_separator(); |
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const char* start = strrchr(name, file_separator); |
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const char* new_name = (start == NULL) ? name : (start + 1); |
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FOR_ALL_AOT_LIBRARIES(lib) { |
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const char* lib_name = (*lib)->name(); |
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start = strrchr(lib_name, file_separator); |
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const char* old_name = (start == NULL) ? lib_name : (start + 1); |
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if (strcmp(old_name, new_name) == 0) { |
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256 |
if (PrintAOT) { |
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warning("AOT library %s is already loaded as %s.", name, lib_name); |
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258 |
} |
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259 |
return; |
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260 |
} |
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261 |
} |
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char ebuf[1024]; |
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263 |
void* handle = os::dll_load(name, ebuf, sizeof ebuf); |
42650 | 264 |
if (handle == NULL) { |
265 |
if (exit_on_error) { |
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tty->print_cr("error opening file: %s", ebuf); |
42650 | 267 |
vm_exit(1); |
268 |
} |
|
269 |
return; |
|
270 |
} |
|
271 |
const int dso_id = libraries_count() + 1; |
|
272 |
AOTLib* lib = new AOTLib(handle, name, dso_id); |
|
273 |
if (!lib->is_valid()) { |
|
274 |
delete lib; |
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os::dll_unload(handle); |
42650 | 276 |
return; |
277 |
} |
|
278 |
add_library(lib); |
|
279 |
} |
|
280 |
||
281 |
#ifndef PRODUCT |
|
282 |
void AOTLoader::print_statistics() { |
|
283 |
{ ttyLocker ttyl; |
|
284 |
tty->print_cr("--- AOT Statistics ---"); |
|
285 |
tty->print_cr("AOT libraries loaded: %d", heaps_count()); |
|
286 |
AOTCodeHeap::print_statistics(); |
|
287 |
} |
|
288 |
} |
|
289 |
#endif |
|
47668 | 290 |
|
291 |
||
292 |
bool AOTLoader::reconcile_dynamic_invoke(InstanceKlass* holder, int index, Method* adapter_method, Klass* appendix_klass) { |
|
293 |
if (!UseAOT) { |
|
294 |
return true; |
|
295 |
} |
|
296 |
JavaThread* thread = JavaThread::current(); |
|
297 |
ResourceMark rm(thread); |
|
298 |
RegisterMap map(thread, false); |
|
299 |
frame caller_frame = thread->last_frame().sender(&map); // Skip stub |
|
300 |
CodeBlob* caller_cb = caller_frame.cb(); |
|
301 |
guarantee(caller_cb != NULL && caller_cb->is_compiled(), "must be called from compiled method"); |
|
302 |
CompiledMethod* cm = caller_cb->as_compiled_method(); |
|
303 |
||
304 |
if (!cm->is_aot()) { |
|
305 |
return true; |
|
306 |
} |
|
307 |
AOTCompiledMethod* aot = (AOTCompiledMethod*)cm; |
|
308 |
||
309 |
AOTCodeHeap* caller_heap = NULL; |
|
310 |
FOR_ALL_AOT_HEAPS(heap) { |
|
311 |
if ((*heap)->contains_blob(aot)) { |
|
312 |
caller_heap = *heap; |
|
313 |
break; |
|
314 |
} |
|
315 |
} |
|
316 |
guarantee(caller_heap != NULL, "CodeHeap not found"); |
|
317 |
bool success = caller_heap->reconcile_dynamic_invoke(aot, holder, index, adapter_method, appendix_klass); |
|
318 |
vmassert(success || thread->last_frame().sender(&map).is_deoptimized_frame(), "caller not deoptimized on failure"); |
|
319 |
return success; |
|
320 |
} |
|
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321 |
|
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322 |
|
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323 |
// This should be called very early during startup before any of the AOTed methods that use boxes can deoptimize. |
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324 |
// Deoptimization machinery expects the caches to be present and populated. |
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325 |
void AOTLoader::initialize_box_caches(TRAPS) { |
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326 |
if (!UseAOT || libraries_count() == 0) { |
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327 |
return; |
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328 |
} |
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329 |
TraceTime timer("AOT initialization of box caches", TRACETIME_LOG(Info, aot, startuptime)); |
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Symbol* box_classes[] = { java_lang_Boolean::symbol(), java_lang_Byte_ByteCache::symbol(), |
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331 |
java_lang_Short_ShortCache::symbol(), java_lang_Character_CharacterCache::symbol(), |
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332 |
java_lang_Integer_IntegerCache::symbol(), java_lang_Long_LongCache::symbol() }; |
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333 |
|
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334 |
for (unsigned i = 0; i < sizeof(box_classes) / sizeof(Symbol*); i++) { |
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Klass* k = SystemDictionary::resolve_or_fail(box_classes[i], true, CHECK); |
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InstanceKlass* ik = InstanceKlass::cast(k); |
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if (ik->is_not_initialized()) { |
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ik->initialize(CHECK); |
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339 |
} |
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} |
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341 |
} |