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