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annotate src/os/windows/vm/os_windows.hpp @ 3095:d3d00c1ea071
IdealGraphVisualizer: Enhance text view so it can display arbitrary properties from the active graph's group. For diff graphs, it shows the textual difference between the property strings using the NetBeans Diff module.
| author | Peter Hofer <peter.hofer@jku.at> |
|---|---|
| date | Wed, 29 Jun 2011 17:33:35 +0200 |
| parents | 63d374c54045 |
| children | 5def270bc147 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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 */ | |
| 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; |
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41 static bool _is_windows_server; |
| 0 | 42 |
| 43 public: | |
| 44 // Windows-specific interface: | |
| 45 static void initialize_system_info(); | |
| 46 static void setmode_streams(); | |
| 47 | |
| 48 // Processor info as provided by NT | |
| 49 static int processor_type() { return _processor_type; } | |
| 50 // Processor level may not be accurate on non-NT systems | |
| 51 static int processor_level() { | |
| 52 assert(is_nt(), "use vm_version instead"); | |
| 53 return _processor_level; | |
| 54 } | |
| 55 static julong available_memory(); | |
| 56 static julong physical_memory() { return _physical_memory; } | |
| 57 | |
| 58 public: | |
| 59 // Generic interface: | |
| 60 | |
| 61 // Trace number of created threads | |
| 62 static intx _os_thread_limit; | |
| 63 static volatile intx _os_thread_count; | |
| 64 | |
| 65 // Tells whether the platform is NT or Windown95 | |
| 66 static bool is_nt() { return _is_nt; } | |
| 67 | |
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68 // Tells whether this is a server version of Windows |
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69 static bool is_windows_server() { return _is_windows_server; } |
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70 |
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71 // Tells whether the platform is Windows 2003 |
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72 static bool is_windows_2003() { return _is_windows_2003; } |
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73 |
| 0 | 74 // Returns the byte size of a virtual memory page |
| 75 static int vm_page_size() { return _vm_page_size; } | |
| 76 | |
| 77 // Returns the size in bytes of memory blocks which can be allocated. | |
| 78 static int vm_allocation_granularity() { return _vm_allocation_granularity; } | |
| 79 | |
| 80 // Read the headers for the executable that started the current process into | |
| 81 // the structure passed in (see winnt.h). | |
| 82 static void read_executable_headers(PIMAGE_NT_HEADERS); | |
| 83 | |
| 84 // Default stack size for the current process. | |
| 85 static size_t default_stack_size() { return _default_stack_size; } | |
| 86 | |
| 87 #ifndef _WIN64 | |
| 88 // A wrapper to install a structured exception handler for fast JNI accesors. | |
| 89 static address fast_jni_accessor_wrapper(BasicType); | |
| 90 #endif | |
| 91 | |
| 92 // filter function to ignore faults on serializations page | |
| 93 static LONG WINAPI serialize_fault_filter(struct _EXCEPTION_POINTERS* e); | |
| 94 }; | |
| 95 | |
| 96 class PlatformEvent : public CHeapObj { | |
| 97 private: | |
| 98 double CachePad [4] ; // increase odds that _Event is sole occupant of cache line | |
| 99 volatile int _Event ; | |
| 100 HANDLE _ParkHandle ; | |
| 101 | |
| 102 public: // TODO-FIXME: make dtor private | |
| 103 ~PlatformEvent() { guarantee (0, "invariant") ; } | |
| 104 | |
| 105 public: | |
| 106 PlatformEvent() { | |
| 107 _Event = 0 ; | |
| 108 _ParkHandle = CreateEvent (NULL, false, false, NULL) ; | |
| 109 guarantee (_ParkHandle != NULL, "invariant") ; | |
| 110 } | |
| 111 | |
| 112 // Exercise caution using reset() and fired() - they may require MEMBARs | |
| 113 void reset() { _Event = 0 ; } | |
| 114 int fired() { return _Event; } | |
| 115 void park () ; | |
| 116 void unpark () ; | |
| 117 int park (jlong millis) ; | |
| 118 } ; | |
| 119 | |
| 120 | |
| 121 | |
| 122 class PlatformParker : public CHeapObj { | |
| 123 protected: | |
| 124 HANDLE _ParkEvent ; | |
| 125 | |
| 126 public: | |
| 127 ~PlatformParker () { guarantee (0, "invariant") ; } | |
| 128 PlatformParker () { | |
| 129 _ParkEvent = CreateEvent (NULL, true, false, NULL) ; | |
| 130 guarantee (_ParkEvent != NULL, "invariant") ; | |
| 131 } | |
| 132 | |
| 133 } ; | |
| 1972 | 134 |
| 135 #endif // OS_WINDOWS_VM_OS_WINDOWS_HPP |