1 /* 2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef OS_WINDOWS_VM_OS_WINDOWS_HPP 26 #define OS_WINDOWS_VM_OS_WINDOWS_HPP 27 // Win32_OS defines the interface to windows operating systems 28 29 class win32 { 30 31 protected: 32 static int _vm_page_size; 33 static int _vm_allocation_granularity; 34 static int _processor_type; 35 static int _processor_level; 36 static julong _physical_memory; 37 static size_t _default_stack_size; 38 static bool _is_nt; 39 static bool _is_windows_2003; 40 static bool _is_windows_server; 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 // load dll from Windows system directory or Windows directory 58 static HINSTANCE load_Windows_dll(const char* name, char *ebuf, int ebuflen); 59 60 public: 61 // Generic interface: 62 63 // Trace number of created threads 64 static intx _os_thread_limit; 65 static volatile intx _os_thread_count; 66 67 // Tells whether the platform is NT or Windown95 68 static bool is_nt() { return _is_nt; } 69 70 // Tells whether this is a server version of Windows 71 static bool is_windows_server() { return _is_windows_server; } 72 73 // Tells whether the platform is Windows 2003 74 static bool is_windows_2003() { return _is_windows_2003; } 75 76 // Returns the byte size of a virtual memory page 77 static int vm_page_size() { return _vm_page_size; } 78 79 // Returns the size in bytes of memory blocks which can be allocated. 80 static int vm_allocation_granularity() { return _vm_allocation_granularity; } 81 82 // Read the headers for the executable that started the current process into 83 // the structure passed in (see winnt.h). 84 static void read_executable_headers(PIMAGE_NT_HEADERS); 85 86 // Default stack size for the current process. 87 static size_t default_stack_size() { return _default_stack_size; } 88 89 #ifndef _WIN64 90 // A wrapper to install a structured exception handler for fast JNI accesors. 91 static address fast_jni_accessor_wrapper(BasicType); 92 #endif 93 94 // filter function to ignore faults on serializations page 95 static LONG WINAPI serialize_fault_filter(struct _EXCEPTION_POINTERS* e); 96 }; 97 98 class PlatformEvent : public CHeapObj { 99 private: 100 double CachePad [4] ; // increase odds that _Event is sole occupant of cache line 101 volatile int _Event ; 102 HANDLE _ParkHandle ; 103 104 public: // TODO-FIXME: make dtor private 105 ~PlatformEvent() { guarantee (0, "invariant") ; } 106 107 public: 108 PlatformEvent() { 109 _Event = 0 ; 110 _ParkHandle = CreateEvent (NULL, false, false, NULL) ; 111 guarantee (_ParkHandle != NULL, "invariant") ; 112 } 113 114 // Exercise caution using reset() and fired() - they may require MEMBARs 115 void reset() { _Event = 0 ; } 116 int fired() { return _Event; } 117 void park () ; 118 void unpark () ; 119 int park (jlong millis) ; 120 } ; 121 122 123 124 class PlatformParker : public CHeapObj { 125 protected: 126 HANDLE _ParkEvent ; 127 128 public: 129 ~PlatformParker () { guarantee (0, "invariant") ; } 130 PlatformParker () { 131 _ParkEvent = CreateEvent (NULL, true, false, NULL) ; 132 guarantee (_ParkEvent != NULL, "invariant") ; 133 } 134 135 } ; 136 137 // JDK7 requires VS2010 138 #if _MSC_VER < 1600 139 #define JDK6_OR_EARLIER 1 140 #endif 141 142 143 144 class WinSock2Dll: AllStatic { 145 public: 146 static BOOL WSAStartup(WORD, LPWSADATA); 147 static struct hostent* gethostbyname(const char *name); 148 static BOOL WinSock2Available(); 149 #ifdef JDK6_OR_EARLIER 150 private: 151 static int (PASCAL FAR* _WSAStartup)(WORD, LPWSADATA); 152 static struct hostent *(PASCAL FAR *_gethostbyname)(...); 153 static BOOL initialized; 154 155 static void initialize(); 156 #endif 157 }; 158 159 class Kernel32Dll: AllStatic { 160 public: 161 static BOOL SwitchToThread(); 162 static SIZE_T GetLargePageMinimum(); 163 164 static BOOL SwitchToThreadAvailable(); 165 static BOOL GetLargePageMinimumAvailable(); 166 167 // Help tools 168 static BOOL HelpToolsAvailable(); 169 static HANDLE CreateToolhelp32Snapshot(DWORD,DWORD); 170 static BOOL Module32First(HANDLE,LPMODULEENTRY32); 171 static BOOL Module32Next(HANDLE,LPMODULEENTRY32); 172 173 static BOOL GetNativeSystemInfoAvailable(); 174 static void GetNativeSystemInfo(LPSYSTEM_INFO); 175 176 // NUMA calls 177 static BOOL NumaCallsAvailable(); 178 static LPVOID VirtualAllocExNuma(HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD); 179 static BOOL GetNumaHighestNodeNumber(PULONG); 180 static BOOL GetNumaNodeProcessorMask(UCHAR, PULONGLONG); 181 182 private: 183 // GetLargePageMinimum available on Windows Vista/Windows Server 2003 184 // and later 185 // NUMA calls available Windows Vista/WS2008 and later 186 187 static SIZE_T (WINAPI *_GetLargePageMinimum)(void); 188 static LPVOID (WINAPI *_VirtualAllocExNuma) (HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD); 189 static BOOL (WINAPI *_GetNumaHighestNodeNumber) (PULONG); 190 static BOOL (WINAPI *_GetNumaNodeProcessorMask) (UCHAR, PULONGLONG); 191 static BOOL initialized; 192 193 static void initialize(); 194 static void initializeCommon(); 195 196 #ifdef JDK6_OR_EARLIER 197 private: 198 static BOOL (WINAPI *_SwitchToThread)(void); 199 static HANDLE (WINAPI* _CreateToolhelp32Snapshot)(DWORD,DWORD); 200 static BOOL (WINAPI* _Module32First)(HANDLE,LPMODULEENTRY32); 201 static BOOL (WINAPI* _Module32Next)(HANDLE,LPMODULEENTRY32); 202 static void (WINAPI *_GetNativeSystemInfo)(LPSYSTEM_INFO); 203 #endif 204 205 }; 206 207 class Advapi32Dll: AllStatic { 208 public: 209 static BOOL AdjustTokenPrivileges(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD); 210 static BOOL OpenProcessToken(HANDLE, DWORD, PHANDLE); 211 static BOOL LookupPrivilegeValue(LPCTSTR, LPCTSTR, PLUID); 212 213 static BOOL AdvapiAvailable(); 214 215 #ifdef JDK6_OR_EARLIER 216 private: 217 static BOOL (WINAPI *_AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD); 218 static BOOL (WINAPI *_OpenProcessToken)(HANDLE, DWORD, PHANDLE); 219 static BOOL (WINAPI *_LookupPrivilegeValue)(LPCTSTR, LPCTSTR, PLUID); 220 static BOOL initialized; 221 222 static void initialize(); 223 #endif 224 }; 225 226 class PSApiDll: AllStatic { 227 public: 228 static BOOL EnumProcessModules(HANDLE, HMODULE *, DWORD, LPDWORD); 229 static DWORD GetModuleFileNameEx(HANDLE, HMODULE, LPTSTR, DWORD); 230 static BOOL GetModuleInformation(HANDLE, HMODULE, LPMODULEINFO, DWORD); 231 232 static BOOL PSApiAvailable(); 233 234 #ifdef JDK6_OR_EARLIER 235 private: 236 static BOOL (WINAPI *_EnumProcessModules)(HANDLE, HMODULE *, DWORD, LPDWORD); 237 static BOOL (WINAPI *_GetModuleFileNameEx)(HANDLE, HMODULE, LPTSTR, DWORD);; 238 static BOOL (WINAPI *_GetModuleInformation)(HANDLE, HMODULE, LPMODULEINFO, DWORD); 239 static BOOL initialized; 240 241 static void initialize(); 242 #endif 243 }; 244 245 #endif // OS_WINDOWS_VM_OS_WINDOWS_HPP