| /* |
| * Copyright (c) 1999, 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. |
| * |
| */ |
| |
| #ifndef SHARE_VM_JVMCI_JVMCIENV_HPP |
| #define SHARE_VM_JVMCI_JVMCIENV_HPP |
| |
| #include "classfile/systemDictionary.hpp" |
| #include "code/debugInfoRec.hpp" |
| #include "code/dependencies.hpp" |
| #include "code/exceptionHandlerTable.hpp" |
| #include "compiler/oopMap.hpp" |
| #include "runtime/thread.hpp" |
| |
| class CompileTask; |
| |
| // Bring the JVMCI compiler thread into the VM state. |
| #define JVMCI_VM_ENTRY_MARK \ |
| JavaThread* thread = JavaThread::current(); \ |
| ThreadInVMfromNative __tiv(thread); \ |
| ResetNoHandleMark rnhm; \ |
| HandleMarkCleaner __hm(thread); \ |
| Thread* THREAD = thread; \ |
| debug_only(VMNativeEntryWrapper __vew;) |
| |
| #define JVMCI_EXCEPTION_CONTEXT \ |
| JavaThread* thread=JavaThread::current(); \ |
| Thread* THREAD = thread; |
| |
| // |
| // This class is the top level broker for requests from the compiler |
| // to the VM. |
| class JVMCIEnv : StackObj { |
| CI_PACKAGE_ACCESS_TO |
| |
| friend class JVMCIVMStructs; |
| friend class CompileBroker; |
| friend class Dependencies; // for get_object, during logging |
| |
| public: |
| |
| enum CodeInstallResult { |
| ok, |
| dependencies_failed, |
| dependencies_invalid, |
| cache_full, |
| code_too_large |
| }; |
| |
| // Look up a klass by name from a particular class loader (the accessor's). |
| // If require_local, result must be defined in that class loader, or NULL. |
| // If !require_local, a result from remote class loader may be reported, |
| // if sufficient class loader constraints exist such that initiating |
| // a class loading request from the given loader is bound to return |
| // the class defined in the remote loader (or throw an error). |
| // |
| // Return an unloaded klass if !require_local and no class at all is found. |
| // |
| // The CI treats a klass as loaded if it is consistently defined in |
| // another loader, even if it hasn't yet been loaded in all loaders |
| // that could potentially see it via delegation. |
| static Klass* get_klass_by_name(Klass* accessing_klass, Symbol* klass_name, bool require_local); |
| |
| // Constant pool access. |
| static Klass* get_klass_by_index(const constantPoolHandle& cpool, |
| int klass_index, |
| bool& is_accessible, |
| Klass* loading_klass); |
| static void get_field_by_index(InstanceKlass* loading_klass, fieldDescriptor& fd, |
| int field_index); |
| static methodHandle get_method_by_index(const constantPoolHandle& cpool, |
| int method_index, Bytecodes::Code bc, |
| InstanceKlass* loading_klass); |
| |
| JVMCIEnv(CompileTask* task, int system_dictionary_modification_counter); |
| |
| private: |
| CompileTask* _task; |
| int _system_dictionary_modification_counter; |
| |
| // Compilation result values |
| const char* _failure_reason; |
| bool _retryable; |
| |
| // Cache JVMTI state |
| bool _jvmti_can_hotswap_or_post_breakpoint; |
| bool _jvmti_can_access_local_variables; |
| bool _jvmti_can_post_on_exceptions; |
| |
| // Implementation methods for loading and constant pool access. |
| static Klass* get_klass_by_name_impl(Klass* accessing_klass, |
| const constantPoolHandle& cpool, |
| Symbol* klass_name, |
| bool require_local); |
| static Klass* get_klass_by_index_impl(const constantPoolHandle& cpool, |
| int klass_index, |
| bool& is_accessible, |
| Klass* loading_klass); |
| static void get_field_by_index_impl(InstanceKlass* loading_klass, fieldDescriptor& fd, |
| int field_index); |
| static methodHandle get_method_by_index_impl(const constantPoolHandle& cpool, |
| int method_index, Bytecodes::Code bc, |
| InstanceKlass* loading_klass); |
| |
| // Helper methods |
| static bool check_klass_accessibility(Klass* accessing_klass, Klass* resolved_klass); |
| static methodHandle lookup_method(InstanceKlass* accessor, |
| Klass* holder, |
| Symbol* name, |
| Symbol* sig, |
| Bytecodes::Code bc, |
| constantTag tag); |
| |
| private: |
| |
| // Is this thread currently in the VM state? |
| static bool is_in_vm(); |
| |
| // Helper routine for determining the validity of a compilation |
| // with respect to concurrent class loading. |
| static JVMCIEnv::CodeInstallResult check_for_system_dictionary_modification(Dependencies* target, Handle compiled_code, |
| JVMCIEnv* env, char** failure_detail); |
| |
| public: |
| CompileTask* task() { return _task; } |
| |
| const char* failure_reason() { return _failure_reason; } |
| bool retryable() { return _retryable; } |
| |
| void set_failure(const char* reason, bool retryable) { |
| _failure_reason = reason; |
| _retryable = retryable; |
| } |
| |
| // Register the result of a compilation. |
| static JVMCIEnv::CodeInstallResult register_method( |
| const methodHandle& target, |
| nmethod*& nm, |
| int entry_bci, |
| CodeOffsets* offsets, |
| int orig_pc_offset, |
| CodeBuffer* code_buffer, |
| int frame_words, |
| OopMapSet* oop_map_set, |
| ExceptionHandlerTable* handler_table, |
| AbstractCompiler* compiler, |
| DebugInformationRecorder* debug_info, |
| Dependencies* dependencies, |
| JVMCIEnv* env, |
| int compile_id, |
| bool has_unsafe_access, |
| bool has_wide_vector, |
| Handle installed_code, |
| Handle compiled_code, |
| Handle speculation_log); |
| |
| // converts the Klass* representing the holder of a method into a |
| // InstanceKlass*. This is needed since the holder of a method in |
| // the bytecodes could be an array type. Basically this converts |
| // array types into java/lang/Object and other types stay as they are. |
| static InstanceKlass* get_instance_klass_for_declared_method_holder(Klass* klass); |
| }; |
| |
| #endif // SHARE_VM_JVMCI_JVMCIENV_HPP |