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 BOOL GetNativeSystemInfoAvailable();
196 static void GetNativeSystemInfo(LPSYSTEM_INFO);
197
198 // NUMA calls
199 static BOOL NumaCallsAvailable();
200 static LPVOID VirtualAllocExNuma(HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD);
201 static BOOL GetNumaHighestNodeNumber(PULONG);
202 static BOOL GetNumaNodeProcessorMask(UCHAR, PULONGLONG);
203
204 // Stack walking
205 static USHORT RtlCaptureStackBackTrace(ULONG, ULONG, PVOID*, PULONG);
206
207 private:
208 // GetLargePageMinimum available on Windows Vista/Windows Server 2003
209 // and later
210 // NUMA calls available Windows Vista/WS2008 and later
211
212 static SIZE_T (WINAPI *_GetLargePageMinimum)(void);
213 static LPVOID (WINAPI *_VirtualAllocExNuma) (HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD);
214 static BOOL (WINAPI *_GetNumaHighestNodeNumber) (PULONG);
215 static BOOL (WINAPI *_GetNumaNodeProcessorMask) (UCHAR, PULONGLONG);
216 static USHORT (WINAPI *_RtlCaptureStackBackTrace)(ULONG, ULONG, PVOID*, PULONG);
217 static BOOL initialized;
218
219 static void initialize();
220 static void initializeCommon();
221
222 #ifdef JDK6_OR_EARLIER
223 private:
224 static BOOL (WINAPI *_SwitchToThread)(void);
225 static HANDLE (WINAPI* _CreateToolhelp32Snapshot)(DWORD,DWORD);
226 static BOOL (WINAPI* _Module32First)(HANDLE,LPMODULEENTRY32);
227 static BOOL (WINAPI* _Module32Next)(HANDLE,LPMODULEENTRY32);
228 static void (WINAPI *_GetNativeSystemInfo)(LPSYSTEM_INFO);
229 #endif
230
231 };
232
233 class Advapi32Dll: AllStatic {
234 public:
235 static BOOL AdjustTokenPrivileges(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
236 static BOOL OpenProcessToken(HANDLE, DWORD, PHANDLE);
237 static BOOL LookupPrivilegeValue(LPCTSTR, LPCTSTR, PLUID);
238
239 static BOOL AdvapiAvailable();
240
241 #ifdef JDK6_OR_EARLIER
242 private:
243 static BOOL (WINAPI *_AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
244 static BOOL (WINAPI *_OpenProcessToken)(HANDLE, DWORD, PHANDLE);
245 static BOOL (WINAPI *_LookupPrivilegeValue)(LPCTSTR, LPCTSTR, PLUID);
246 static BOOL initialized;
247
248 static void initialize();
249 #endif
250 };
251
252 class PSApiDll: AllStatic {
253 public:
254 static BOOL EnumProcessModules(HANDLE, HMODULE *, DWORD, LPDWORD);
255 static DWORD GetModuleFileNameEx(HANDLE, HMODULE, LPTSTR, DWORD);
256 static BOOL GetModuleInformation(HANDLE, HMODULE, LPMODULEINFO, DWORD);
257
258 static BOOL PSApiAvailable();
259
260 #ifdef JDK6_OR_EARLIER
261 private:
262 static BOOL (WINAPI *_EnumProcessModules)(HANDLE, HMODULE *, DWORD, LPDWORD);
263 static BOOL (WINAPI *_GetModuleFileNameEx)(HANDLE, HMODULE, LPTSTR, DWORD);;
264 static BOOL (WINAPI *_GetModuleInformation)(HANDLE, HMODULE, LPMODULEINFO, DWORD);
265 static BOOL initialized;
266
267 static void initialize();
268 #endif
269 };
270
271 #endif // OS_WINDOWS_VM_OS_WINDOWS_HPP