1 /* 2 * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #ifndef SHARE_JVMCI_JVMCI_HPP 25 #define SHARE_JVMCI_JVMCI_HPP 26 27 #include "compiler/compilerDefinitions.hpp" 28 #include "utilities/exceptions.hpp" 29 30 class BoolObjectClosure; 31 class constantPoolHandle; 32 class JavaThread; 33 class JVMCIEnv; 34 class JVMCIRuntime; 35 class Metadata; 36 class MetadataHandleBlock; 37 class OopClosure; 38 class OopStorage; 39 40 struct _jmetadata; 41 typedef struct _jmetadata *jmetadata; 42 43 class JVMCI : public AllStatic { 44 friend class JVMCIRuntime; 45 friend class JVMCIEnv; 46 47 private: 48 // Handles to Metadata objects. 49 static MetadataHandleBlock* _metadata_handles; 50 51 // Access to the HotSpotJVMCIRuntime used by the CompileBroker. 52 static JVMCIRuntime* _compiler_runtime; 53 54 // Access to the HotSpotJVMCIRuntime used by Java code running on the 55 // HotSpot heap. It will be the same as _compiler_runtime if 56 // UseJVMCINativeLibrary is false 57 static JVMCIRuntime* _java_runtime; 58 59 public: 60 enum CodeInstallResult { 61 ok, 62 dependencies_failed, 63 cache_full, 64 code_too_large 65 }; 66 67 static void do_unloading(bool unloading_occurred); 68 69 static void metadata_do(void f(Metadata*)); 70 71 static void shutdown(); 72 73 static bool shutdown_called(); 74 75 static bool is_compiler_initialized(); 76 77 /** 78 * Determines if the VM is sufficiently booted to initialize JVMCI. 79 */ 80 static bool can_initialize_JVMCI(); 81 82 static void initialize_globals(); 83 84 static void initialize_compiler(TRAPS); 85 86 static jobject make_global(const Handle& obj); 87 static void destroy_global(jobject handle); 88 static bool is_global_handle(jobject handle); 89 90 static jmetadata allocate_handle(const methodHandle& handle); 91 static jmetadata allocate_handle(const constantPoolHandle& handle); 92 93 static void release_handle(jmetadata handle); 94 compiler_runtime()95 static JVMCIRuntime* compiler_runtime() { return _compiler_runtime; } java_runtime()96 static JVMCIRuntime* java_runtime() { return _java_runtime; } 97 }; 98 99 #endif // SHARE_JVMCI_JVMCI_HPP 100