Mercurial > hg > graal-compiler
annotate src/share/vm/runtime/javaFrameAnchor.hpp @ 2162:ccfcb502af3f
6566340: Restore use of stillborn flag to signify a thread that was stopped before it started
Summary: Restore use of stillborn flag
Reviewed-by: acorn, alanb
author | dholmes |
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date | Tue, 25 Jan 2011 00:14:21 -0500 |
parents | f95d63e2154a |
children | b92c45f2bc75 |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
1972 | 24 |
25 #ifndef SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP | |
26 #define SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP | |
27 | |
28 #include "utilities/globalDefinitions.hpp" | |
29 #ifdef TARGET_OS_ARCH_linux_x86 | |
30 # include "orderAccess_linux_x86.inline.hpp" | |
31 #endif | |
32 #ifdef TARGET_OS_ARCH_linux_sparc | |
33 # include "orderAccess_linux_sparc.inline.hpp" | |
34 #endif | |
35 #ifdef TARGET_OS_ARCH_linux_zero | |
36 # include "orderAccess_linux_zero.inline.hpp" | |
37 #endif | |
38 #ifdef TARGET_OS_ARCH_solaris_x86 | |
39 # include "orderAccess_solaris_x86.inline.hpp" | |
40 #endif | |
41 #ifdef TARGET_OS_ARCH_solaris_sparc | |
42 # include "orderAccess_solaris_sparc.inline.hpp" | |
43 #endif | |
44 #ifdef TARGET_OS_ARCH_windows_x86 | |
45 # include "orderAccess_windows_x86.inline.hpp" | |
46 #endif | |
0 | 47 // |
48 // An object for encapsulating the machine/os dependent part of a JavaThread frame state | |
49 // | |
50 class JavaThread; | |
51 | |
52 class JavaFrameAnchor VALUE_OBJ_CLASS_SPEC { | |
53 // Too many friends... | |
54 friend class CallNativeDirectNode; | |
55 friend class OptoRuntime; | |
56 friend class Runtime1; | |
57 friend class StubAssembler; | |
58 friend class CallRuntimeDirectNode; | |
59 friend class MacroAssembler; | |
60 friend class InterpreterGenerator; | |
61 friend class LIR_Assembler; | |
62 friend class GraphKit; | |
63 friend class StubGenerator; | |
64 friend class JavaThread; | |
65 friend class frame; | |
66 friend class VMStructs; | |
67 friend class BytecodeInterpreter; | |
68 friend class JavaCallWrapper; | |
69 | |
70 private: | |
71 // | |
72 // Whenever _last_Java_sp != NULL other anchor fields MUST be valid! | |
73 // The stack may not be walkable [check with walkable() ] but the values must be valid. | |
74 // The profiler apparently depends on this. | |
75 // | |
76 intptr_t* volatile _last_Java_sp; | |
77 | |
78 // Whenever we call from Java to native we can not be assured that the return | |
79 // address that composes the last_Java_frame will be in an accessible location | |
80 // so calls from Java to native store that pc (or one good enough to locate | |
81 // the oopmap) in the frame anchor. Since the frames that call from Java to | |
82 // native are never deoptimized we never need to patch the pc and so this | |
83 // is acceptable. | |
84 volatile address _last_Java_pc; | |
85 | |
86 // tells whether the last Java frame is set | |
87 // It is important that when last_Java_sp != NULL that the rest of the frame | |
88 // anchor (including platform specific) all be valid. | |
89 | |
90 bool has_last_Java_frame() const { return _last_Java_sp != NULL; } | |
91 // This is very dangerous unless sp == NULL | |
92 // Invalidate the anchor so that has_last_frame is false | |
93 // and no one should look at the other fields. | |
94 void zap(void) { _last_Java_sp = NULL; } | |
95 | |
1972 | 96 #ifdef TARGET_ARCH_x86 |
97 # include "javaFrameAnchor_x86.hpp" | |
98 #endif | |
99 #ifdef TARGET_ARCH_sparc | |
100 # include "javaFrameAnchor_sparc.hpp" | |
101 #endif | |
102 #ifdef TARGET_ARCH_zero | |
103 # include "javaFrameAnchor_zero.hpp" | |
104 #endif | |
105 | |
0 | 106 |
107 public: | |
108 JavaFrameAnchor() { clear(); } | |
109 JavaFrameAnchor(JavaFrameAnchor *src) { copy(src); } | |
110 | |
111 void set_last_Java_pc(address pc) { _last_Java_pc = pc; } | |
112 | |
113 // Assembly stub generation helpers | |
114 | |
115 static ByteSize last_Java_sp_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_sp); } | |
116 static ByteSize last_Java_pc_offset() { return byte_offset_of(JavaFrameAnchor, _last_Java_pc); } | |
117 | |
118 }; | |
1972 | 119 |
120 #endif // SHARE_VM_RUNTIME_JAVAFRAMEANCHOR_HPP |