1 /*
2 * Copyright (c) 1997, 2014, 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 // File conventions
33 static const char* file_separator() { return "\\"; }
34 static const char* line_separator() { return "\r\n"; }
35 static const char* path_separator() { return ";"; }
36
37 class win32 {
38 friend class os;
39
40 protected:
41 static int _vm_page_size;
42 static int _vm_allocation_granularity;
43 static int _processor_type;
44 static int _processor_level;
45 static julong _physical_memory;
46 static size_t _default_stack_size;
47 static bool _is_nt;
48 static bool _is_windows_2003;
49 static bool _is_windows_server;
50 static bool _has_performance_count;
51
52 static void print_windows_version(outputStream* st);
53
54 public:
55 // Windows-specific interface:
56 static void initialize_system_info();
57 static void setmode_streams();
58
59 // Processor info as provided by NT
60 static int processor_type() { return _processor_type; }
61 // Processor level may not be accurate on non-NT systems
62 static int processor_level() {
63 assert(is_nt(), "use vm_version instead");
64 return _processor_level;
65 }
66 static julong available_memory();
67 static julong physical_memory() { return _physical_memory; }
68
69 // load dll from Windows system directory or Windows directory
70 static HINSTANCE load_Windows_dll(const char* name, char *ebuf, int ebuflen);
71
72 private:
73 static void initialize_performance_counter();
74
75 public:
76 // Generic interface:
77
78 // Trace number of created threads
79 static intx _os_thread_limit;
80 static volatile intx _os_thread_count;
81
82 // Tells whether the platform is NT or Windown95
83 static bool is_nt() { return _is_nt; }
84
85 // Tells whether this is a server version of Windows
86 static bool is_windows_server() { return _is_windows_server; }
87
88 // Tells whether the platform is Windows 2003
89 static bool is_windows_2003() { return _is_windows_2003; }
90
91 // Returns the byte size of a virtual memory page
92 static int vm_page_size() { return _vm_page_size; }
93
94 // Returns the size in bytes of memory blocks which can be allocated.
95 static int vm_allocation_granularity() { return _vm_allocation_granularity; }
96
97 // Read the headers for the executable that started the current process into
98 // the structure passed in (see winnt.h).
99 static void read_executable_headers(PIMAGE_NT_HEADERS);
100
101 // Default stack size for the current process.
102 static size_t default_stack_size() { return _default_stack_size; }
103
104 #ifndef _WIN64
105 // A wrapper to install a structured exception handler for fast JNI accesors.
106 static address fast_jni_accessor_wrapper(BasicType);
107 #endif
108
109 static void call_test_func_with_wrapper(void (*funcPtr)(void));
110
111 // filter function to ignore faults on serializations page
112 static LONG WINAPI serialize_fault_filter(struct _EXCEPTION_POINTERS* e);
113 };
114
115 /*
116 * Crash protection for the watcher thread. Wrap the callback
117 * with a __try { call() }
118 * To be able to use this - don't take locks, don't rely on destructors,
119 * don't make OS library calls, don't allocate memory, don't print,
120 * don't call code that could leave the heap / memory in an inconsistent state,
121 * or anything else where we are not in control if we suddenly jump out.
122 */
123 class WatcherThreadCrashProtection : public StackObj {
124 public:
125 WatcherThreadCrashProtection();
126 bool call(os::CrashProtectionCallback& cb);
127 };
128
129 class PlatformEvent : public CHeapObj<mtInternal> {
130 private:
131 double CachePad [4] ; // increase odds that _Event is sole occupant of cache line
132 volatile int _Event ;
133 HANDLE _ParkHandle ;
134
135 public: // TODO-FIXME: make dtor private
136 ~PlatformEvent() { guarantee (0, "invariant") ; }
137
138 public:
139 PlatformEvent() {
140 _Event = 0 ;
141 _ParkHandle = CreateEvent (NULL, false, false, NULL) ;
142 guarantee (_ParkHandle != NULL, "invariant") ;
143 }
144
145 // Exercise caution using reset() and fired() - they may require MEMBARs
146 void reset() { _Event = 0 ; }
147 int fired() { return _Event; }
148 void park () ;
149 void unpark () ;
150 int park (jlong millis) ;
151 } ;
152
153
154
155 class PlatformParker : public CHeapObj<mtInternal> {
156 protected:
157 HANDLE _ParkEvent ;
158
159 public:
160 ~PlatformParker () { guarantee (0, "invariant") ; }
161 PlatformParker () {
162 _ParkEvent = CreateEvent (NULL, true, false, NULL) ;
163 guarantee (_ParkEvent != NULL, "invariant") ;
164 }
165
166 } ;
167
168 // JDK7 requires VS2010
169 #if _MSC_VER < 1600
170 #define JDK6_OR_EARLIER 1
171 #endif
172
173
174
175 class WinSock2Dll: AllStatic {
176 public:
177 static BOOL WSAStartup(WORD, LPWSADATA);
178 static struct hostent* gethostbyname(const char *name);
179 static BOOL WinSock2Available();
180 #ifdef JDK6_OR_EARLIER
181 private:
182 static int (PASCAL FAR* _WSAStartup)(WORD, LPWSADATA);
183 static struct hostent *(PASCAL FAR *_gethostbyname)(...);
184 static BOOL initialized;
185
186 static void initialize();
187 #endif
188 };
189
190 class Kernel32Dll: AllStatic {
191 public:
192 static BOOL SwitchToThread();
193 static SIZE_T GetLargePageMinimum();
194
195 static BOOL SwitchToThreadAvailable();
196 static BOOL GetLargePageMinimumAvailable();
197
198 // Help tools
199 static BOOL HelpToolsAvailable();
200 static HANDLE CreateToolhelp32Snapshot(DWORD,DWORD);
201 static BOOL Module32First(HANDLE,LPMODULEENTRY32);
202 static BOOL Module32Next(HANDLE,LPMODULEENTRY32);
203
204 static BOOL GetNativeSystemInfoAvailable();
205 static void GetNativeSystemInfo(LPSYSTEM_INFO);
206
207 // NUMA calls
208 static BOOL NumaCallsAvailable();
209 static LPVOID VirtualAllocExNuma(HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD);
210 static BOOL GetNumaHighestNodeNumber(PULONG);
211 static BOOL GetNumaNodeProcessorMask(UCHAR, PULONGLONG);
212
213 // Stack walking
214 static USHORT RtlCaptureStackBackTrace(ULONG, ULONG, PVOID*, PULONG);
215
216 private:
217 // GetLargePageMinimum available on Windows Vista/Windows Server 2003
218 // and later
219 // NUMA calls available Windows Vista/WS2008 and later
220
221 static SIZE_T (WINAPI *_GetLargePageMinimum)(void);
222 static LPVOID (WINAPI *_VirtualAllocExNuma) (HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD);
223 static BOOL (WINAPI *_GetNumaHighestNodeNumber) (PULONG);
224 static BOOL (WINAPI *_GetNumaNodeProcessorMask) (UCHAR, PULONGLONG);
225 static USHORT (WINAPI *_RtlCaptureStackBackTrace)(ULONG, ULONG, PVOID*, PULONG);
226 static BOOL initialized;
227
228 static void initialize();
229 static void initializeCommon();
230
231 #ifdef JDK6_OR_EARLIER
232 private:
233 static BOOL (WINAPI *_SwitchToThread)(void);
234 static HANDLE (WINAPI* _CreateToolhelp32Snapshot)(DWORD,DWORD);
235 static BOOL (WINAPI* _Module32First)(HANDLE,LPMODULEENTRY32);
236 static BOOL (WINAPI* _Module32Next)(HANDLE,LPMODULEENTRY32);
237 static void (WINAPI *_GetNativeSystemInfo)(LPSYSTEM_INFO);
238 #endif
239
240 };
241
242 class Advapi32Dll: AllStatic {
243 public:
244 static BOOL AdjustTokenPrivileges(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
245 static BOOL OpenProcessToken(HANDLE, DWORD, PHANDLE);
246 static BOOL LookupPrivilegeValue(LPCTSTR, LPCTSTR, PLUID);
247
248 static BOOL AdvapiAvailable();
249
250 #ifdef JDK6_OR_EARLIER
251 private:
252 static BOOL (WINAPI *_AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
253 static BOOL (WINAPI *_OpenProcessToken)(HANDLE, DWORD, PHANDLE);
254 static BOOL (WINAPI *_LookupPrivilegeValue)(LPCTSTR, LPCTSTR, PLUID);
255 static BOOL initialized;
256
257 static void initialize();
258 #endif
259 };
260
261 class PSApiDll: AllStatic {
262 public:
263 static BOOL EnumProcessModules(HANDLE, HMODULE *, DWORD, LPDWORD);
264 static DWORD GetModuleFileNameEx(HANDLE, HMODULE, LPTSTR, DWORD);
265 static BOOL GetModuleInformation(HANDLE, HMODULE, LPMODULEINFO, DWORD);
266
267 static BOOL PSApiAvailable();
268
269 #ifdef JDK6_OR_EARLIER
270 private:
271 static BOOL (WINAPI *_EnumProcessModules)(HANDLE, HMODULE *, DWORD, LPDWORD);
272 static BOOL (WINAPI *_GetModuleFileNameEx)(HANDLE, HMODULE, LPTSTR, DWORD);;
273 static BOOL (WINAPI *_GetModuleInformation)(HANDLE, HMODULE, LPMODULEINFO, DWORD);
274 static BOOL initialized;
275
276 static void initialize();
277 #endif
278 };
279
280 #endif // OS_WINDOWS_VM_OS_WINDOWS_HPP