Mercurial > hg > truffle
annotate src/os_cpu/linux_zero/vm/thread_linux_zero.hpp @ 4997:0c9196f57172
use profiling information whenever possible
author | Christian Haeubl <christian.haeubl@oracle.com> |
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date | Wed, 29 Feb 2012 19:20:15 -0800 |
parents | f95d63e2154a |
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rev | line source |
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1010 | 1 /* |
1972 | 2 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. |
1379 | 3 * Copyright 2007, 2008, 2009, 2010 Red Hat, Inc. |
1010 | 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 * | |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
1010 | 23 * |
24 */ | |
25 | |
1972 | 26 #ifndef OS_CPU_LINUX_ZERO_VM_THREAD_LINUX_ZERO_HPP |
27 #define OS_CPU_LINUX_ZERO_VM_THREAD_LINUX_ZERO_HPP | |
28 | |
1010 | 29 private: |
30 ZeroStack _zero_stack; | |
31 ZeroFrame* _top_zero_frame; | |
32 | |
33 void pd_initialize() { | |
34 _top_zero_frame = NULL; | |
35 } | |
36 | |
37 public: | |
38 ZeroStack *zero_stack() { | |
39 return &_zero_stack; | |
40 } | |
41 | |
42 public: | |
43 ZeroFrame *top_zero_frame() { | |
44 return _top_zero_frame; | |
45 } | |
46 void push_zero_frame(ZeroFrame *frame) { | |
47 *(ZeroFrame **) frame = _top_zero_frame; | |
48 _top_zero_frame = frame; | |
49 } | |
50 void pop_zero_frame() { | |
51 zero_stack()->set_sp((intptr_t *) _top_zero_frame + 1); | |
52 _top_zero_frame = *(ZeroFrame **) _top_zero_frame; | |
53 } | |
54 | |
55 public: | |
56 static ByteSize zero_stack_offset() { | |
57 return byte_offset_of(JavaThread, _zero_stack); | |
58 } | |
59 static ByteSize top_zero_frame_offset() { | |
60 return byte_offset_of(JavaThread, _top_zero_frame); | |
61 } | |
62 | |
63 public: | |
64 void record_base_of_stack_pointer() { | |
65 assert(top_zero_frame() == NULL, "junk on stack prior to Java call"); | |
66 } | |
67 void set_base_of_stack_pointer(intptr_t* base_sp) { | |
68 assert(base_sp == NULL, "should be"); | |
69 assert(top_zero_frame() == NULL, "junk on stack after Java call"); | |
70 } | |
71 | |
72 public: | |
73 void set_last_Java_frame() { | |
1505 | 74 set_last_Java_frame(top_zero_frame(), zero_stack()->sp()); |
1010 | 75 } |
76 void reset_last_Java_frame() { | |
1505 | 77 frame_anchor()->zap(); |
78 } | |
79 void set_last_Java_frame(ZeroFrame* fp, intptr_t* sp) { | |
80 frame_anchor()->set(sp, NULL, fp); | |
1379 | 81 } |
1505 | 82 |
83 public: | |
84 ZeroFrame* last_Java_fp() { | |
85 return frame_anchor()->last_Java_fp(); | |
1010 | 86 } |
87 | |
88 private: | |
89 frame pd_last_frame() { | |
90 assert(has_last_Java_frame(), "must have last_Java_sp() when suspended"); | |
1505 | 91 return frame(last_Java_fp(), last_Java_sp()); |
1010 | 92 } |
93 | |
94 public: | |
1512 | 95 static ByteSize last_Java_fp_offset() { |
96 return byte_offset_of(JavaThread, _anchor) + | |
97 JavaFrameAnchor::last_Java_fp_offset(); | |
98 } | |
99 | |
100 public: | |
1010 | 101 // Check for pending suspend requests and pending asynchronous |
102 // exceptions. There are separate accessors for these, but | |
103 // _suspend_flags is volatile so using them would be unsafe. | |
104 bool has_special_condition_for_native_trans() { | |
105 return _suspend_flags != 0; | |
106 } | |
107 | |
108 public: | |
109 bool pd_get_top_frame_for_signal_handler(frame* fr_addr, | |
110 void* ucontext, | |
111 bool isInJava) { | |
112 ShouldNotCallThis(); | |
113 } | |
114 | |
115 // These routines are only used on cpu architectures that | |
116 // have separate register stacks (Itanium). | |
117 static bool register_stack_overflow() { return false; } | |
118 static void enable_register_stack_guard() {} | |
119 static void disable_register_stack_guard() {} | |
1972 | 120 |
121 #endif // OS_CPU_LINUX_ZERO_VM_THREAD_LINUX_ZERO_HPP |