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comparison src/share/vm/compiler/abstractCompiler.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children 35069ca331f2 c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 1999-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 typedef void (*initializer)(void);
26
27 class AbstractCompiler : public CHeapObj {
28 private:
29 bool _is_initialized; // Mark whether compiler object is initialized
30
31 protected:
32 // Used for tracking global state of compiler runtime initialization
33 enum { uninitialized, initializing, initialized };
34
35 // This method will call the initialization method "f" once (per compiler class/subclass)
36 // and do so without holding any locks
37 void initialize_runtimes(initializer f, volatile int* state);
38
39 public:
40 AbstractCompiler() : _is_initialized(false) {}
41
42 // Name of this compiler
43 virtual const char* name() = 0;
44
45 // Missing feature tests
46 virtual bool supports_native() { return true; }
47 virtual bool supports_osr () { return true; }
48 #if defined(TIERED) || ( !defined(COMPILER1) && !defined(COMPILER2))
49 virtual bool is_c1 () { return false; }
50 virtual bool is_c2 () { return false; }
51 #else
52 #ifdef COMPILER1
53 bool is_c1 () { return true; }
54 bool is_c2 () { return false; }
55 #endif // COMPILER1
56 #ifdef COMPILER2
57 bool is_c1 () { return false; }
58 bool is_c2 () { return true; }
59 #endif // COMPILER2
60 #endif // TIERED
61
62 // Customization
63 virtual bool needs_stubs () = 0;
64
65 void mark_initialized() { _is_initialized = true; }
66 bool is_initialized() { return _is_initialized; }
67
68 virtual void initialize() = 0;
69
70 // Compilation entry point for methods
71 virtual void compile_method(ciEnv* env,
72 ciMethod* target,
73 int entry_bci) {
74 ShouldNotReachHere();
75 }
76
77
78 // Print compilation timers and statistics
79 virtual void print_timers() {
80 ShouldNotReachHere();
81 }
82 };