1 /* 2 * Copyright (c) 1997, 2013, 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 // Information about the protection of the page at address '0' on this os. 30 static bool zero_page_read_protected() { return true; } 31 32 class win32 { 33 friend class os; 34 35 protected: 36 static int _vm_page_size; 37 static int _vm_allocation_granularity; 38 static int _processor_type; 39 static int _processor_level; 40 static julong _physical_memory; 41 static size_t _default_stack_size; 42 static bool _is_nt; 43 static bool _is_windows_2003; 44 static bool _is_windows_server; 45 46 static void print_windows_version(outputStream* st); 47 48 public: 49 // Windows-specific interface: 50 static void initialize_system_info(); 51 static void setmode_streams(); 52 53 // Processor info as provided by NT 54 static int processor_type() { return _processor_type; } 55 // Processor level may not be accurate on non-NT systems 56 static int processor_level() { 57 assert(is_nt(), "use vm_version instead"); 58 return _processor_level; 59 } 60 static julong available_memory(); 61 static julong physical_memory() { return _physical_memory; } 62 63 // load dll from Windows system directory or Windows directory 64 static HINSTANCE load_Windows_dll(const char* name, char *ebuf, int ebuflen); 65 66 public: 67 // Generic interface: 68 69 // Trace number of created threads 70 static intx _os_thread_limit; 71 static volatile intx _os_thread_count; 72 73 // Tells whether the platform is NT or Windown95 74 static bool is_nt() { return _is_nt; } 75 76 // Tells whether this is a server version of Windows 77 static bool is_windows_server() { return _is_windows_server; } 78 79 // Tells whether the platform is Windows 2003 80 static bool is_windows_2003() { return _is_windows_2003; } 81 82 // Returns the byte size of a virtual memory page 83 static int vm_page_size() { return _vm_page_size; } 84 85 // Returns the size in bytes of memory blocks which can be allocated. 86 static int vm_allocation_granularity() { return _vm_allocation_granularity; } 87 88 // Read the headers for the executable that started the current process into 89 // the structure passed in (see winnt.h). 90 static void read_executable_headers(PIMAGE_NT_HEADERS); 91 92 // Default stack size for the current process. 93 static size_t default_stack_size() { return _default_stack_size; } 94 95 #ifndef _WIN64 96 // A wrapper to install a structured exception handler for fast JNI accesors. 97 static address fast_jni_accessor_wrapper(BasicType); 98 #endif 99 100 static void call_test_func_with_wrapper(void (*funcPtr)(void)); 101 102 // filter function to ignore faults on serializations page 103 static LONG WINAPI serialize_fault_filter(struct _EXCEPTION_POINTERS* e); 104 }; 105 106 /* 107 * Crash protection for the watcher thread. Wrap the callback 108 * with a __try { call() } 109 * To be able to use this - don't take locks, don't rely on destructors, 110 * don't make OS library calls, don't allocate memory, don't print, 111 * don't call code that could leave the heap / memory in an inconsistent state, 112 * or anything else where we are not in control if we suddenly jump out. 113 */ 114 class WatcherThreadCrashProtection : public StackObj { 115 public: 116 WatcherThreadCrashProtection(); 117 bool call(os::CrashProtectionCallback& cb); 118 }; 119 120 class PlatformEvent : public CHeapObj<mtInternal> { 121 private: 122 double CachePad [4] ; // increase odds that _Event is sole occupant of cache line 123 volatile int _Event ; 124 HANDLE _ParkHandle ; 125 126 public: // TODO-FIXME: make dtor private 127 ~PlatformEvent() { guarantee (0, "invariant") ; } 128 129 public: 130 PlatformEvent() { 131 _Event = 0 ; 132 _ParkHandle = CreateEvent (NULL, false, false, NULL) ; 133 guarantee (_ParkHandle != NULL, "invariant") ; 134 } 135 136 // Exercise caution using reset() and fired() - they may require MEMBARs 137 void reset() { _Event = 0 ; } 138 int fired() { return _Event; } 139 void park () ; 140 void unpark () ; 141 int park (jlong millis) ; 142 } ; 143 144 145 146 class PlatformParker : public CHeapObj<mtInternal> { 147 protected: 148 HANDLE _ParkEvent ; 149 150 public: 151 ~PlatformParker () { guarantee (0, "invariant") ; } 152 PlatformParker () { 153 _ParkEvent = CreateEvent (NULL, true, false, NULL) ; 154 guarantee (_ParkEvent != NULL, "invariant") ; 155 } 156 157 } ; 158 159 // JDK7 requires VS2010 160 #if _MSC_VER < 1600 161 #define JDK6_OR_EARLIER 1 162 #endif 163 164 165 166 class WinSock2Dll: AllStatic { 167 public: 168 static BOOL WSAStartup(WORD, LPWSADATA); 169 static struct hostent* gethostbyname(const char *name); 170 static BOOL WinSock2Available(); 171 #ifdef JDK6_OR_EARLIER 172 private: 173 static int (PASCAL FAR* _WSAStartup)(WORD, LPWSADATA); 174 static struct hostent *(PASCAL FAR *_gethostbyname)(...); 175 static BOOL initialized; 176 177 static void initialize(); 178 #endif 179 }; 180 181 class Kernel32Dll: AllStatic { 182 public: 183 static BOOL SwitchToThread(); 184 static SIZE_T GetLargePageMinimum(); 185 186 static BOOL SwitchToThreadAvailable(); 187 static BOOL GetLargePageMinimumAvailable(); 188 189 // Help tools 190 static BOOL HelpToolsAvailable(); 191 static HANDLE CreateToolhelp32Snapshot(DWORD,DWORD); 192 static BOOL Module32First(HANDLE,LPMODULEENTRY32); 193 static BOOL Module32Next(HANDLE,LPMODULEENTRY32); 194 195 static void GetNativeSystemInfo(LPSYSTEM_INFO); 196 197 // NUMA calls 198 static BOOL NumaCallsAvailable(); 199 static LPVOID VirtualAllocExNuma(HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD); 200 static BOOL GetNumaHighestNodeNumber(PULONG); 201 static BOOL GetNumaNodeProcessorMask(UCHAR, PULONGLONG); 202 203 // Stack walking 204 static USHORT RtlCaptureStackBackTrace(ULONG, ULONG, PVOID*, PULONG); 205 206 private: 207 // GetLargePageMinimum available on Windows Vista/Windows Server 2003 208 // and later 209 // NUMA calls available Windows Vista/WS2008 and later 210 211 static SIZE_T (WINAPI *_GetLargePageMinimum)(void); 212 static LPVOID (WINAPI *_VirtualAllocExNuma) (HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD); 213 static BOOL (WINAPI *_GetNumaHighestNodeNumber) (PULONG); 214 static BOOL (WINAPI *_GetNumaNodeProcessorMask) (UCHAR, PULONGLONG); 215 static USHORT (WINAPI *_RtlCaptureStackBackTrace)(ULONG, ULONG, PVOID*, PULONG); 216 static BOOL initialized; 217 218 static void initialize(); 219 static void initializeCommon(); 220 221 #ifdef JDK6_OR_EARLIER 222 private: 223 static BOOL (WINAPI *_SwitchToThread)(void); 224 static HANDLE (WINAPI* _CreateToolhelp32Snapshot)(DWORD,DWORD); 225 static BOOL (WINAPI* _Module32First)(HANDLE,LPMODULEENTRY32); 226 static BOOL (WINAPI* _Module32Next)(HANDLE,LPMODULEENTRY32); 227 static void (WINAPI *_GetNativeSystemInfo)(LPSYSTEM_INFO); 228 #endif 229 230 }; 231 232 class Advapi32Dll: AllStatic { 233 public: 234 static BOOL AdjustTokenPrivileges(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD); 235 static BOOL OpenProcessToken(HANDLE, DWORD, PHANDLE); 236 static BOOL LookupPrivilegeValue(LPCTSTR, LPCTSTR, PLUID); 237 238 static BOOL AdvapiAvailable(); 239 240 #ifdef JDK6_OR_EARLIER 241 private: 242 static BOOL (WINAPI *_AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD); 243 static BOOL (WINAPI *_OpenProcessToken)(HANDLE, DWORD, PHANDLE); 244 static BOOL (WINAPI *_LookupPrivilegeValue)(LPCTSTR, LPCTSTR, PLUID); 245 static BOOL initialized; 246 247 static void initialize(); 248 #endif 249 }; 250 251 class PSApiDll: AllStatic { 252 public: 253 static BOOL EnumProcessModules(HANDLE, HMODULE *, DWORD, LPDWORD); 254 static DWORD GetModuleFileNameEx(HANDLE, HMODULE, LPTSTR, DWORD); 255 static BOOL GetModuleInformation(HANDLE, HMODULE, LPMODULEINFO, DWORD); 256 257 static BOOL PSApiAvailable(); 258 259 #ifdef JDK6_OR_EARLIER 260 private: 261 static BOOL (WINAPI *_EnumProcessModules)(HANDLE, HMODULE *, DWORD, LPDWORD); 262 static BOOL (WINAPI *_GetModuleFileNameEx)(HANDLE, HMODULE, LPTSTR, DWORD);; 263 static BOOL (WINAPI *_GetModuleInformation)(HANDLE, HMODULE, LPMODULEINFO, DWORD); 264 static BOOL initialized; 265 266 static void initialize(); 267 #endif 268 }; 269 270 #endif // OS_WINDOWS_VM_OS_WINDOWS_HPP