| /* |
| * Copyright (c) 2016, 2018, 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 "jvm.h" |
| |
| #include "aot/aotCodeHeap.hpp" |
| #include "aot/aotLoader.inline.hpp" |
| #include "jvmci/jvmciRuntime.hpp" |
| #include "memory/allocation.inline.hpp" |
| #include "oops/method.hpp" |
| #include "runtime/handles.inline.hpp" |
| #include "runtime/os.hpp" |
| #include "runtime/timerTrace.hpp" |
| |
| GrowableArray<AOTCodeHeap*>* AOTLoader::_heaps = new(ResourceObj::C_HEAP, mtCode) GrowableArray<AOTCodeHeap*> (2, true); |
| GrowableArray<AOTLib*>* AOTLoader::_libraries = new(ResourceObj::C_HEAP, mtCode) GrowableArray<AOTLib*> (2, true); |
| |
| // Iterate over all AOT CodeHeaps |
| #define FOR_ALL_AOT_HEAPS(heap) for (GrowableArrayIterator<AOTCodeHeap*> heap = heaps()->begin(); heap != heaps()->end(); ++heap) |
| // Iterate over all AOT Libraries |
| #define FOR_ALL_AOT_LIBRARIES(lib) for (GrowableArrayIterator<AOTLib*> lib = libraries()->begin(); lib != libraries()->end(); ++lib) |
| |
| void AOTLoader::load_for_klass(InstanceKlass* ik, Thread* thread) { |
| if (ik->is_anonymous()) { |
| // don't even bother |
| return; |
| } |
| if (UseAOT) { |
| // We allow hotswap to be enabled after the onload phase, but not breakpoints |
| assert(!JvmtiExport::can_post_breakpoint(), "AOT should have been disabled."); |
| FOR_ALL_AOT_HEAPS(heap) { |
| (*heap)->load_klass_data(ik, thread); |
| } |
| } |
| } |
| |
| uint64_t AOTLoader::get_saved_fingerprint(InstanceKlass* ik) { |
| assert(UseAOT, "called only when AOT is enabled"); |
| if (ik->is_anonymous()) { |
| // don't even bother |
| return 0; |
| } |
| FOR_ALL_AOT_HEAPS(heap) { |
| AOTKlassData* klass_data = (*heap)->find_klass(ik); |
| if (klass_data != NULL) { |
| return klass_data->_fingerprint; |
| } |
| } |
| return 0; |
| } |
| |
| void AOTLoader::oops_do(OopClosure* f) { |
| if (UseAOT) { |
| FOR_ALL_AOT_HEAPS(heap) { |
| (*heap)->oops_do(f); |
| } |
| } |
| } |
| |
| void AOTLoader::metadata_do(void f(Metadata*)) { |
| if (UseAOT) { |
| FOR_ALL_AOT_HEAPS(heap) { |
| (*heap)->metadata_do(f); |
| } |
| } |
| } |
| |
| /** |
| * List of core modules for which we search for shared libraries. |
| */ |
| static const char* modules[] = { |
| "java.base", |
| "java.logging", |
| "jdk.compiler", |
| "jdk.scripting.nashorn", |
| "jdk.internal.vm.ci", |
| "jdk.internal.vm.compiler" |
| }; |
| |
| void AOTLoader::initialize() { |
| TraceTime timer("AOT initialization", TRACETIME_LOG(Info, aot, startuptime)); |
| |
| if (FLAG_IS_DEFAULT(UseAOT) && AOTLibrary != NULL) { |
| // Don't need to set UseAOT on command line when AOTLibrary is specified |
| FLAG_SET_DEFAULT(UseAOT, true); |
| } |
| if (UseAOT) { |
| // EagerInitialization is not compatible with AOT |
| if (EagerInitialization) { |
| if (PrintAOT) { |
| warning("EagerInitialization is not compatible with AOT (switching AOT off)"); |
| } |
| FLAG_SET_DEFAULT(UseAOT, false); |
| return; |
| } |
| |
| if (JvmtiExport::can_post_breakpoint()) { |
| if (PrintAOT) { |
| warning("JVMTI capability to post breakpoint is not compatible with AOT (switching AOT off)"); |
| } |
| FLAG_SET_DEFAULT(UseAOT, false); |
| return; |
| } |
| |
| // -Xint is not compatible with AOT |
| if (Arguments::is_interpreter_only()) { |
| if (PrintAOT) { |
| warning("-Xint is not compatible with AOT (switching AOT off)"); |
| } |
| FLAG_SET_DEFAULT(UseAOT, false); |
| return; |
| } |
| |
| #ifdef _WINDOWS |
| const char pathSep = ';'; |
| #else |
| const char pathSep = ':'; |
| #endif |
| |
| // Scan the AOTLibrary option. |
| if (AOTLibrary != NULL) { |
| const int len = (int)strlen(AOTLibrary); |
| char* cp = NEW_C_HEAP_ARRAY(char, len+1, mtCode); |
| if (cp != NULL) { // No memory? |
| memcpy(cp, AOTLibrary, len); |
| cp[len] = '\0'; |
| char* end = cp + len; |
| while (cp < end) { |
| const char* name = cp; |
| while ((*cp) != '\0' && (*cp) != '\n' && (*cp) != ',' && (*cp) != pathSep) cp++; |
| cp[0] = '\0'; // Terminate name |
| cp++; |
| load_library(name, true); |
| } |
| } |
| } |
| |
| // Load well-know AOT libraries from Java installation directory. |
| const char* home = Arguments::get_java_home(); |
| const char* file_separator = os::file_separator(); |
| |
| for (int i = 0; i < (int) (sizeof(modules) / sizeof(const char*)); i++) { |
| char library[JVM_MAXPATHLEN]; |
| 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()); |
| load_library(library, false); |
| } |
| } |
| } |
| |
| void AOTLoader::universe_init() { |
| if (UseAOT && libraries_count() > 0) { |
| // 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. |
| // AOT sets shift values during heap and metaspace initialization. |
| // Check shifts value to make sure thay did not change. |
| if (UseCompressedOops && AOTLib::narrow_oop_shift_initialized()) { |
| int oop_shift = Universe::narrow_oop_shift(); |
| FOR_ALL_AOT_LIBRARIES(lib) { |
| (*lib)->verify_flag((*lib)->config()->_narrowOopShift, oop_shift, "Universe::narrow_oop_shift"); |
| } |
| if (UseCompressedClassPointers) { // It is set only if UseCompressedOops is set |
| int klass_shift = Universe::narrow_klass_shift(); |
| FOR_ALL_AOT_LIBRARIES(lib) { |
| (*lib)->verify_flag((*lib)->config()->_narrowKlassShift, klass_shift, "Universe::narrow_klass_shift"); |
| } |
| } |
| } |
| // Create heaps for all valid libraries |
| FOR_ALL_AOT_LIBRARIES(lib) { |
| if ((*lib)->is_valid()) { |
| AOTCodeHeap* heap = new AOTCodeHeap(*lib); |
| { |
| MutexLockerEx mu(CodeCache_lock, Mutex::_no_safepoint_check_flag); |
| add_heap(heap); |
| CodeCache::add_heap(heap); |
| } |
| } else { |
| // Unload invalid libraries |
| os::dll_unload((*lib)->dl_handle()); |
| } |
| } |
| } |
| if (heaps_count() == 0) { |
| if (FLAG_IS_DEFAULT(UseAOT)) { |
| FLAG_SET_DEFAULT(UseAOT, false); |
| } |
| } |
| } |
| |
| // Set shift value for compressed oops and classes based on first AOT library config. |
| // AOTLoader::universe_init(), which is called later, will check the shift value again to make sure nobody change it. |
| // This code is not executed during CDS dump because it runs in Interpreter mode and AOT is disabled in this mode. |
| |
| void AOTLoader::set_narrow_oop_shift() { |
| // This method is called from Universe::initialize_heap(). |
| if (UseAOT && libraries_count() > 0 && |
| UseCompressedOops && AOTLib::narrow_oop_shift_initialized()) { |
| if (Universe::narrow_oop_shift() == 0) { |
| // 0 is valid shift value for small heap but we can safely increase it |
| // at this point when nobody used it yet. |
| Universe::set_narrow_oop_shift(AOTLib::narrow_oop_shift()); |
| } |
| } |
| } |
| |
| void AOTLoader::set_narrow_klass_shift() { |
| // This method is called from Metaspace::set_narrow_klass_base_and_shift(). |
| if (UseAOT && libraries_count() > 0 && |
| UseCompressedOops && AOTLib::narrow_oop_shift_initialized() && |
| UseCompressedClassPointers) { |
| if (Universe::narrow_klass_shift() == 0) { |
| Universe::set_narrow_klass_shift(AOTLib::narrow_klass_shift()); |
| } |
| } |
| } |
| |
| void AOTLoader::load_library(const char* name, bool exit_on_error) { |
| // Skip library if a library with the same name is already loaded. |
| const int file_separator = *os::file_separator(); |
| const char* start = strrchr(name, file_separator); |
| const char* new_name = (start == NULL) ? name : (start + 1); |
| FOR_ALL_AOT_LIBRARIES(lib) { |
| const char* lib_name = (*lib)->name(); |
| start = strrchr(lib_name, file_separator); |
| const char* old_name = (start == NULL) ? lib_name : (start + 1); |
| if (strcmp(old_name, new_name) == 0) { |
| if (PrintAOT) { |
| warning("AOT library %s is already loaded as %s.", name, lib_name); |
| } |
| return; |
| } |
| } |
| char ebuf[1024]; |
| void* handle = os::dll_load(name, ebuf, sizeof ebuf); |
| if (handle == NULL) { |
| if (exit_on_error) { |
| tty->print_cr("error opening file: %s", ebuf); |
| vm_exit(1); |
| } |
| return; |
| } |
| const int dso_id = libraries_count() + 1; |
| AOTLib* lib = new AOTLib(handle, name, dso_id); |
| if (!lib->is_valid()) { |
| delete lib; |
| os::dll_unload(handle); |
| return; |
| } |
| add_library(lib); |
| } |
| |
| #ifndef PRODUCT |
| void AOTLoader::print_statistics() { |
| { ttyLocker ttyl; |
| tty->print_cr("--- AOT Statistics ---"); |
| tty->print_cr("AOT libraries loaded: %d", heaps_count()); |
| AOTCodeHeap::print_statistics(); |
| } |
| } |
| #endif |
| |
| |
| bool AOTLoader::reconcile_dynamic_invoke(InstanceKlass* holder, int index, Method* adapter_method, Klass* appendix_klass) { |
| if (!UseAOT) { |
| return true; |
| } |
| JavaThread* thread = JavaThread::current(); |
| ResourceMark rm(thread); |
| RegisterMap map(thread, false); |
| frame caller_frame = thread->last_frame().sender(&map); // Skip stub |
| CodeBlob* caller_cb = caller_frame.cb(); |
| guarantee(caller_cb != NULL && caller_cb->is_compiled(), "must be called from compiled method"); |
| CompiledMethod* cm = caller_cb->as_compiled_method(); |
| |
| if (!cm->is_aot()) { |
| return true; |
| } |
| AOTCompiledMethod* aot = (AOTCompiledMethod*)cm; |
| |
| AOTCodeHeap* caller_heap = NULL; |
| FOR_ALL_AOT_HEAPS(heap) { |
| if ((*heap)->contains_blob(aot)) { |
| caller_heap = *heap; |
| break; |
| } |
| } |
| guarantee(caller_heap != NULL, "CodeHeap not found"); |
| bool success = caller_heap->reconcile_dynamic_invoke(aot, holder, index, adapter_method, appendix_klass); |
| vmassert(success || thread->last_frame().sender(&map).is_deoptimized_frame(), "caller not deoptimized on failure"); |
| return success; |
| } |