Mercurial > hg > truffle
annotate src/os/windows/vm/os_windows.hpp @ 2145:c1a0ede55d6f
7012493: 2/2 6849574/Test.java fails with Internal Error (src/share/vm/prims/jvmtiTagMap.cpp:3294)
Summary: Refine assertion to work before VMThread has started.
Reviewed-by: ysr, never, dholmes, acorn
author | dcubed |
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date | Wed, 19 Jan 2011 07:41:39 -0800 |
parents | f95d63e2154a |
children | 63d374c54045 |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1997, 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 * | |
1552
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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 */ | |
24 | |
1972 | 25 #ifndef OS_WINDOWS_VM_OS_WINDOWS_HPP |
26 #define OS_WINDOWS_VM_OS_WINDOWS_HPP | |
27 | |
0 | 28 // Win32_OS defines the interface to windows operating systems |
29 | |
30 class win32 { | |
31 | |
32 protected: | |
33 static int _vm_page_size; | |
34 static int _vm_allocation_granularity; | |
35 static int _processor_type; | |
36 static int _processor_level; | |
37 static julong _physical_memory; | |
38 static size_t _default_stack_size; | |
39 static bool _is_nt; | |
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40 static bool _is_windows_2003; |
0 | 41 |
42 public: | |
43 // Windows-specific interface: | |
44 static void initialize_system_info(); | |
45 static void setmode_streams(); | |
46 | |
47 // Processor info as provided by NT | |
48 static int processor_type() { return _processor_type; } | |
49 // Processor level may not be accurate on non-NT systems | |
50 static int processor_level() { | |
51 assert(is_nt(), "use vm_version instead"); | |
52 return _processor_level; | |
53 } | |
54 static julong available_memory(); | |
55 static julong physical_memory() { return _physical_memory; } | |
56 | |
57 public: | |
58 // Generic interface: | |
59 | |
60 // Trace number of created threads | |
61 static intx _os_thread_limit; | |
62 static volatile intx _os_thread_count; | |
63 | |
64 // Tells whether the platform is NT or Windown95 | |
65 static bool is_nt() { return _is_nt; } | |
66 | |
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67 // Tells whether the platform is Windows 2003 |
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68 static bool is_windows_2003() { return _is_windows_2003; } |
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69 |
0 | 70 // Returns the byte size of a virtual memory page |
71 static int vm_page_size() { return _vm_page_size; } | |
72 | |
73 // Returns the size in bytes of memory blocks which can be allocated. | |
74 static int vm_allocation_granularity() { return _vm_allocation_granularity; } | |
75 | |
76 // Read the headers for the executable that started the current process into | |
77 // the structure passed in (see winnt.h). | |
78 static void read_executable_headers(PIMAGE_NT_HEADERS); | |
79 | |
80 // Default stack size for the current process. | |
81 static size_t default_stack_size() { return _default_stack_size; } | |
82 | |
83 #ifndef _WIN64 | |
84 // A wrapper to install a structured exception handler for fast JNI accesors. | |
85 static address fast_jni_accessor_wrapper(BasicType); | |
86 #endif | |
87 | |
88 // filter function to ignore faults on serializations page | |
89 static LONG WINAPI serialize_fault_filter(struct _EXCEPTION_POINTERS* e); | |
90 }; | |
91 | |
92 class PlatformEvent : public CHeapObj { | |
93 private: | |
94 double CachePad [4] ; // increase odds that _Event is sole occupant of cache line | |
95 volatile int _Event ; | |
96 HANDLE _ParkHandle ; | |
97 | |
98 public: // TODO-FIXME: make dtor private | |
99 ~PlatformEvent() { guarantee (0, "invariant") ; } | |
100 | |
101 public: | |
102 PlatformEvent() { | |
103 _Event = 0 ; | |
104 _ParkHandle = CreateEvent (NULL, false, false, NULL) ; | |
105 guarantee (_ParkHandle != NULL, "invariant") ; | |
106 } | |
107 | |
108 // Exercise caution using reset() and fired() - they may require MEMBARs | |
109 void reset() { _Event = 0 ; } | |
110 int fired() { return _Event; } | |
111 void park () ; | |
112 void unpark () ; | |
113 int park (jlong millis) ; | |
114 } ; | |
115 | |
116 | |
117 | |
118 class PlatformParker : public CHeapObj { | |
119 protected: | |
120 HANDLE _ParkEvent ; | |
121 | |
122 public: | |
123 ~PlatformParker () { guarantee (0, "invariant") ; } | |
124 PlatformParker () { | |
125 _ParkEvent = CreateEvent (NULL, true, false, NULL) ; | |
126 guarantee (_ParkEvent != NULL, "invariant") ; | |
127 } | |
128 | |
129 } ; | |
1972 | 130 |
131 #endif // OS_WINDOWS_VM_OS_WINDOWS_HPP |