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
30class BoolObjectClosure;
31class constantPoolHandle;
32class JavaThread;
33class JVMCIEnv;
34class JVMCIRuntime;
35class Metadata;
36class MetadataHandleBlock;
37class OopClosure;
38class OopStorage;
39
40struct _jmetadata;
41typedef struct _jmetadata *jmetadata;
42
43class JVMCI : public AllStatic {
44 friend class JVMCIRuntime;
45 friend class JVMCIEnv;
46
47 private:
48 // Handles to objects in the HotSpot heap.
49 static OopStorage* _object_handles;
50
51 static OopStorage* object_handles();
52
53 // Handles to Metadata objects.
54 static MetadataHandleBlock* _metadata_handles;
55
56 // Access to the HotSpotJVMCIRuntime used by the CompileBroker.
57 static JVMCIRuntime* _compiler_runtime;
58
59 // Access to the HotSpotJVMCIRuntime used by Java code running on the
60 // HotSpot heap. It will be the same as _compiler_runtime if
61 // UseJVMCINativeLibrary is false
62 static JVMCIRuntime* _java_runtime;
63
64 public:
65 enum CodeInstallResult {
66 ok,
67 dependencies_failed,
68 dependencies_invalid,
69 cache_full,
70 code_too_large
71 };
72
73 static void do_unloading(bool unloading_occurred);
74
75 static void metadata_do(void f(Metadata*));
76
77 static void oops_do(OopClosure* f);
78
79 static void shutdown();
80
81 static bool shutdown_called();
82
83 static bool is_compiler_initialized();
84
85 /**
86 * Determines if the VM is sufficiently booted to initialize JVMCI.
87 */
88 static bool can_initialize_JVMCI();
89
90 static void initialize_globals();
91
92 static void initialize_compiler(TRAPS);
93
94 static jobject make_global(const Handle& obj);
95 static bool is_global_handle(jobject handle);
96
97 static jmetadata allocate_handle(const methodHandle& handle);
98 static jmetadata allocate_handle(const constantPoolHandle& handle);
99
100 static void release_handle(jmetadata handle);
101
102 static JVMCIRuntime* compiler_runtime() { return _compiler_runtime; }
103 static JVMCIRuntime* java_runtime() { return _java_runtime; }
104};
105
106#endif // SHARE_JVMCI_JVMCI_HPP
107