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 class AbstractCompiler : public CHeapObj<mtCompiler> {
31 private:
32 volatile int _num_compiler_threads;
33
34 protected:
35 volatile int _compiler_state;
36 // Used for tracking global state of compiler runtime initialization
37 enum { uninitialized, initializing, initialized, failed, shut_down };
38
39 // This method returns true for the first compiler thread that reaches that methods.
40 // This thread will initialize the compiler runtime.
41 bool should_perform_init();
42
43 public:
44 AbstractCompiler() : _compiler_state(uninitialized), _num_compiler_threads(0) {}
45
46 // This function determines the compiler thread that will perform the
47 // shutdown of the corresponding compiler runtime.
48 bool should_perform_shutdown();
49
50 // Name of this compiler
51 virtual const char* name() = 0;
52
53 // Missing feature tests
54 virtual bool supports_native() { return true; }
55 virtual bool supports_osr () { return true; }
56 virtual bool can_compile_method(methodHandle method) { return true; }
57 #if defined(TIERED) || ( !defined(COMPILER1) && !defined(COMPILER2) && !defined(SHARK))
58 virtual bool is_c1 () { return false; }
59 virtual bool is_c2 () { return false; }
60 virtual bool is_shark() { return false; }
61 #else
62 #ifdef COMPILER1
63 bool is_c1 () { return true; }
64 bool is_c2 () { return false; }
65 bool is_shark() { return false; }
66 #endif // COMPILER1
67 #ifdef COMPILER2
68 bool is_c1 () { return false; }
69 bool is_c2 () { return true; }
70 bool is_shark() { return false; }
71 #endif // COMPILER2
72 #ifdef SHARK
73 bool is_c1 () { return false; }
74 bool is_c2 () { return false; }
75 bool is_shark() { return true; }
76 #endif // SHARK
77 #endif // TIERED
78
79 // Customization
80 virtual void initialize () = 0;
81
82 void set_num_compiler_threads(int num) { _num_compiler_threads = num; }
83 int num_compiler_threads() { return _num_compiler_threads; }
84
85 // Get/set state of compiler objects
86 bool is_initialized() { return _compiler_state == initialized; }
87 bool is_failed () { return _compiler_state == failed;}
88 void set_state (int state);
89 void set_shut_down () { set_state(shut_down); }
90 // Compilation entry point for methods
91 virtual void compile_method(ciEnv* env, ciMethod* target, int entry_bci) {
92 ShouldNotReachHere();
93 }
94
95
96 // Print compilation timers and statistics
97 virtual void print_timers() {
98 ShouldNotReachHere();
99 }
100 };
101
102 #endif // SHARE_VM_COMPILER_ABSTRACTCOMPILER_HPP