1 /*
2 * Copyright (c) 1999, 2012, 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
25 #ifndef SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP
26 #define SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP
27
28 #include "ci/compilerInterface.hpp"
29
30 typedef void (*initializer)(void);
31
32 class AbstractCompiler : public CHeapObj<mtCompiler> {
33 private:
34 bool _is_initialized; // Mark whether compiler object is initialized
35
36 protected:
37 // Used for tracking global state of compiler runtime initialization
38 enum { uninitialized, initializing, initialized };
39
40 // This method will call the initialization method "f" once (per compiler class/subclass)
41 // and do so without holding any locks
42 void initialize_runtimes(initializer f, volatile int* state);
43
44 public:
45 AbstractCompiler() : _is_initialized(false) {}
46
47 // Name of this compiler
48 virtual const char* name() = 0;
49
50 // Missing feature tests
51 virtual bool supports_native() { return true; }
52 virtual bool supports_osr () { return true; }
53 virtual bool can_compile_method(methodHandle method) { return true; }
54 #if defined(TIERED) || ( !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK))
55 virtual bool is_c1 () { return false; }
56 virtual bool is_c2 () { return false; }
57 virtual bool is_shark() { return false; }
58 #else
59 #ifdef COMPILER1
60 bool is_c1 () { return true; }
61 bool is_c2 () { return false; }
62 bool is_shark() { return false; }
63 #endif // COMPILER1
64 #ifdef COMPILER2
65 bool is_c1 () { return false; }
66 bool is_c2 () { return true; }
67 bool is_shark() { return false; }
68 #endif // COMPILER2
69 #ifdef SHARK
70 bool is_c1 () { return false; }
71 bool is_c2 () { return false; }
72 bool is_shark() { return true; }
73 #endif // SHARK
74 #endif // TIERED
75
76 // Customization
77 virtual bool needs_stubs () = 0;
78
79 void mark_initialized() { _is_initialized = true; }
80 bool is_initialized() { return _is_initialized; }
81
82 virtual void initialize() = 0;
83
84 // Compilation entry point for methods
85 virtual void compile_method(ciEnv* env,
86 ciMethod* target,
87 int entry_bci) {
88 ShouldNotReachHere();
89 }
90
91
92 // Print compilation timers and statistics
93 virtual void print_timers() {
94 ShouldNotReachHere();
95 }
96 };
97
98 #endif // SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP