Mercurial > hg > graal-compiler
comparison src/share/vm/shark/sharkCompiler.hpp @ 1692:d2ede61b7a12
6976186: integrate Shark HotSpot changes
Summary: Shark is a JIT compiler for Zero that uses the LLVM compiler infrastructure.
Reviewed-by: kvn, twisti
Contributed-by: Gary Benson <gbenson@redhat.com>
author | twisti |
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date | Wed, 11 Aug 2010 05:51:21 -0700 |
parents | |
children | a222fcfba398 |
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1691:4a665be40fd3 | 1692:d2ede61b7a12 |
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1 /* | |
2 * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved. | |
3 * Copyright 2008, 2009 Red Hat, Inc. | |
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
5 * | |
6 * This code is free software; you can redistribute it and/or modify it | |
7 * under the terms of the GNU General Public License version 2 only, as | |
8 * published by the Free Software Foundation. | |
9 * | |
10 * This code is distributed in the hope that it will be useful, but WITHOUT | |
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
13 * version 2 for more details (a copy is included in the LICENSE file that | |
14 * accompanied this code). | |
15 * | |
16 * You should have received a copy of the GNU General Public License version | |
17 * 2 along with this work; if not, write to the Free Software Foundation, | |
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
19 * | |
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
21 * or visit www.oracle.com if you need additional information or have any | |
22 * questions. | |
23 * | |
24 */ | |
25 | |
26 class SharkContext; | |
27 | |
28 class SharkCompiler : public AbstractCompiler { | |
29 public: | |
30 // Creation | |
31 SharkCompiler(); | |
32 | |
33 // Name of this compiler | |
34 const char *name() { return "shark"; } | |
35 | |
36 // Missing feature tests | |
37 bool supports_native() { return true; } | |
38 bool supports_osr() { return true; } | |
39 | |
40 // Customization | |
41 bool needs_adapters() { return false; } | |
42 bool needs_stubs() { return false; } | |
43 | |
44 // Initialization | |
45 void initialize(); | |
46 | |
47 // Compile a normal (bytecode) method and install it in the VM | |
48 void compile_method(ciEnv* env, ciMethod* target, int entry_bci); | |
49 | |
50 // Generate a wrapper for a native (JNI) method | |
51 nmethod* generate_native_wrapper(MacroAssembler* masm, | |
52 methodHandle target, | |
53 BasicType* arg_types, | |
54 BasicType return_type); | |
55 | |
56 // Free compiled methods (and native wrappers) | |
57 void free_compiled_method(address code); | |
58 | |
59 // Each thread generating IR needs its own context. The normal | |
60 // context is used for bytecode methods, and is protected from | |
61 // multiple simultaneous accesses by being restricted to the | |
62 // compiler thread. The native context is used for JNI methods, | |
63 // and is protected from multiple simultaneous accesses by the | |
64 // adapter handler library lock. | |
65 private: | |
66 SharkContext* _normal_context; | |
67 SharkContext* _native_context; | |
68 | |
69 public: | |
70 SharkContext* context() const { | |
71 if (JavaThread::current()->is_Compiler_thread()) { | |
72 return _normal_context; | |
73 } | |
74 else { | |
75 assert(AdapterHandlerLibrary_lock->owned_by_self(), "should be"); | |
76 return _native_context; | |
77 } | |
78 } | |
79 | |
80 // The LLVM execution engine is the JIT we use to generate native | |
81 // code. It is thread safe, but we need to protect it with a lock | |
82 // of our own because otherwise LLVM's lock and HotSpot's locks | |
83 // interleave and deadlock. The SharkMemoryManager is not thread | |
84 // safe, and is protected by the same lock as the execution engine. | |
85 private: | |
86 Monitor* _execution_engine_lock; | |
87 SharkMemoryManager* _memory_manager; | |
88 llvm::ExecutionEngine* _execution_engine; | |
89 | |
90 private: | |
91 Monitor* execution_engine_lock() const { | |
92 return _execution_engine_lock; | |
93 } | |
94 SharkMemoryManager* memory_manager() const { | |
95 assert(execution_engine_lock()->owned_by_self(), "should be"); | |
96 return _memory_manager; | |
97 } | |
98 llvm::ExecutionEngine* execution_engine() const { | |
99 assert(execution_engine_lock()->owned_by_self(), "should be"); | |
100 return _execution_engine; | |
101 } | |
102 | |
103 // Global access | |
104 public: | |
105 static SharkCompiler* compiler() { | |
106 AbstractCompiler *compiler = | |
107 CompileBroker::compiler(CompLevel_fast_compile); | |
108 assert(compiler->is_shark() && compiler->is_initialized(), "should be"); | |
109 return (SharkCompiler *) compiler; | |
110 } | |
111 | |
112 // Helpers | |
113 private: | |
114 static const char* methodname(const char* klass, const char* method); | |
115 void generate_native_code(SharkEntry* entry, | |
116 llvm::Function* function, | |
117 const char* name); | |
118 void free_queued_methods(); | |
119 }; |