1 /*
2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2008, 2009, 2010, 2011 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 #ifndef SHARE_VM_SHARK_SHARKCOMPILER_HPP
27 #define SHARE_VM_SHARK_SHARKCOMPILER_HPP
28
29 #include "ci/ciEnv.hpp"
30 #include "ci/ciMethod.hpp"
31 #include "compiler/abstractCompiler.hpp"
32 #include "compiler/compileBroker.hpp"
33 #include "shark/llvmHeaders.hpp"
34 #include "shark/sharkMemoryManager.hpp"
35
36 class SharkContext;
37
38 class SharkCompiler : public AbstractCompiler {
39 public:
40 // Creation
41 SharkCompiler();
42
43 void init_llvm();
44
45 // Name of this compiler
46 const char *name() { return "shark"; }
47
48 // Missing feature tests
49 bool supports_native() { return true; }
50 bool supports_osr() { return true; }
51 bool can_compile_method(methodHandle method) {
52 return ! (method->is_method_handle_intrinsic() || method->is_compiled_lambda_form());
53 }
54
55 // Initialization
56 void initialize();
57
58 // Compile a normal (bytecode) method and install it in the VM
59 void compile_method(ciEnv* env, ciMethod* target, int entry_bci);
60
61 // Print compilation timers and statistics
62 void print_timers();
63
64 // Generate a wrapper for a native (JNI) method
65 nmethod* generate_native_wrapper(MacroAssembler* masm,
66 methodHandle target,
67 int compile_id,
68 BasicType* arg_types,
69 BasicType return_type);
70
71 // Free compiled methods (and native wrappers)
72 void free_compiled_method(address code);
73
74 // Each thread generating IR needs its own context. The normal
75 // context is used for bytecode methods, and is protected from
76 // multiple simultaneous accesses by being restricted to the
77 // compiler thread. The native context is used for JNI methods,
78 // and is protected from multiple simultaneous accesses by the
79 // adapter handler library lock.
80 private:
81 SharkContext* _normal_context;
82 SharkContext* _native_context;
83
84 public:
85 SharkContext* context() const {
86 if (JavaThread::current()->is_Compiler_thread()) {
87 return _normal_context;
88 }
89 else {
90 assert(AdapterHandlerLibrary_lock->owned_by_self(), "should be");
91 return _native_context;
92 }
93 }
94
95 // The LLVM execution engine is the JIT we use to generate native
96 // code. It is thread safe, but we need to protect it with a lock
97 // of our own because otherwise LLVM's lock and HotSpot's locks
98 // interleave and deadlock. The SharkMemoryManager is not thread
99 // safe, and is protected by the same lock as the execution engine.
100 private:
101 Monitor* _execution_engine_lock;
102 SharkMemoryManager* _memory_manager;
103 llvm::ExecutionEngine* _execution_engine;
104
105 private:
106 Monitor* execution_engine_lock() const {
107 return _execution_engine_lock;
108 }
109 SharkMemoryManager* memory_manager() const {
110 assert(execution_engine_lock()->owned_by_self(), "should be");
111 return _memory_manager;
112 }
113 llvm::ExecutionEngine* execution_engine() const {
114 assert(execution_engine_lock()->owned_by_self(), "should be");
115 return _execution_engine;
116 }
117
118 // Global access
119 public:
120 static SharkCompiler* compiler() {
121 AbstractCompiler *compiler =
122 CompileBroker::compiler(CompLevel_full_optimization);
123 assert(compiler->is_shark() && compiler->is_initialized(), "should be");
124 return (SharkCompiler *) compiler;
125 }
126
127 // Helpers
128 private:
129 static const char* methodname(const char* klass, const char* method);
130 void generate_native_code(SharkEntry* entry,
131 llvm::Function* function,
132 const char* name);
133 void free_queued_methods();
134 };
135
136 #endif // SHARE_VM_SHARK_SHARKCOMPILER_HPP