os_windows.hpp revision 3465:d2a62e0f25eb 
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.
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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
29class 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
43  static void print_windows_version(outputStream* st);
44
45 public:
46  // Windows-specific interface:
47  static void   initialize_system_info();
48  static void   setmode_streams();
49
50  // Processor info as provided by NT
51  static int processor_type()  { return _processor_type;  }
52  // Processor level may not be accurate on non-NT systems
53  static int processor_level() {
54    assert(is_nt(), "use vm_version instead");
55    return _processor_level;
56  }
57  static julong available_memory();
58  static julong physical_memory() { return _physical_memory; }
59
60  // load dll from Windows system directory or Windows directory
61  static HINSTANCE load_Windows_dll(const char* name, char *ebuf, int ebuflen);
62
63 public:
64  // Generic interface:
65
66  // Trace number of created threads
67  static          intx  _os_thread_limit;
68  static volatile intx  _os_thread_count;
69
70  // Tells whether the platform is NT or Windown95
71  static bool is_nt() { return _is_nt; }
72
73  // Tells whether this is a server version of Windows
74  static bool is_windows_server() { return _is_windows_server; }
75
76  // Tells whether the platform is Windows 2003
77  static bool is_windows_2003() { return _is_windows_2003; }
78
79  // Returns the byte size of a virtual memory page
80  static int vm_page_size() { return _vm_page_size; }
81
82  // Returns the size in bytes of memory blocks which can be allocated.
83  static int vm_allocation_granularity() { return _vm_allocation_granularity; }
84
85  // Read the headers for the executable that started the current process into
86  // the structure passed in (see winnt.h).
87  static void read_executable_headers(PIMAGE_NT_HEADERS);
88
89  // Default stack size for the current process.
90  static size_t default_stack_size() { return _default_stack_size; }
91
92#ifndef _WIN64
93  // A wrapper to install a structured exception handler for fast JNI accesors.
94  static address fast_jni_accessor_wrapper(BasicType);
95#endif
96
97  // filter function to ignore faults on serializations page
98  static LONG WINAPI serialize_fault_filter(struct _EXCEPTION_POINTERS* e);
99};
100
101class PlatformEvent : public CHeapObj<mtInternal> {
102  private:
103    double CachePad [4] ;   // increase odds that _Event is sole occupant of cache line
104    volatile int _Event ;
105    HANDLE _ParkHandle ;
106
107  public:       // TODO-FIXME: make dtor private
108    ~PlatformEvent() { guarantee (0, "invariant") ; }
109
110  public:
111    PlatformEvent() {
112      _Event   = 0 ;
113      _ParkHandle = CreateEvent (NULL, false, false, NULL) ;
114      guarantee (_ParkHandle != NULL, "invariant") ;
115    }
116
117    // Exercise caution using reset() and fired() - they may require MEMBARs
118    void reset() { _Event = 0 ; }
119    int  fired() { return _Event; }
120    void park () ;
121    void unpark () ;
122    int  park (jlong millis) ;
123} ;
124
125
126
127class PlatformParker : public CHeapObj<mtInternal> {
128  protected:
129    HANDLE _ParkEvent ;
130
131  public:
132    ~PlatformParker () { guarantee (0, "invariant") ; }
133    PlatformParker  () {
134      _ParkEvent = CreateEvent (NULL, true, false, NULL) ;
135      guarantee (_ParkEvent != NULL, "invariant") ;
136    }
137
138} ;
139
140// JDK7 requires VS2010
141#if _MSC_VER < 1600
142#define JDK6_OR_EARLIER 1
143#endif
144
145
146
147class WinSock2Dll: AllStatic {
148public:
149  static BOOL WSAStartup(WORD, LPWSADATA);
150  static struct hostent* gethostbyname(const char *name);
151  static BOOL WinSock2Available();
152#ifdef JDK6_OR_EARLIER
153private:
154  static int (PASCAL FAR* _WSAStartup)(WORD, LPWSADATA);
155  static struct hostent *(PASCAL FAR *_gethostbyname)(...);
156  static BOOL initialized;
157
158  static void initialize();
159#endif
160};
161
162class Kernel32Dll: AllStatic {
163public:
164  static BOOL SwitchToThread();
165  static SIZE_T GetLargePageMinimum();
166
167  static BOOL SwitchToThreadAvailable();
168  static BOOL GetLargePageMinimumAvailable();
169
170  // Help tools
171  static BOOL HelpToolsAvailable();
172  static HANDLE CreateToolhelp32Snapshot(DWORD,DWORD);
173  static BOOL Module32First(HANDLE,LPMODULEENTRY32);
174  static BOOL Module32Next(HANDLE,LPMODULEENTRY32);
175
176  static BOOL GetNativeSystemInfoAvailable();
177  static void GetNativeSystemInfo(LPSYSTEM_INFO);
178
179  // NUMA calls
180  static BOOL NumaCallsAvailable();
181  static LPVOID VirtualAllocExNuma(HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD);
182  static BOOL GetNumaHighestNodeNumber(PULONG);
183  static BOOL GetNumaNodeProcessorMask(UCHAR, PULONGLONG);
184
185  // Stack walking
186  static USHORT RtlCaptureStackBackTrace(ULONG, ULONG, PVOID*, PULONG);
187
188private:
189  // GetLargePageMinimum available on Windows Vista/Windows Server 2003
190  // and later
191  // NUMA calls available Windows Vista/WS2008 and later
192
193  static SIZE_T (WINAPI *_GetLargePageMinimum)(void);
194  static LPVOID (WINAPI *_VirtualAllocExNuma) (HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD);
195  static BOOL (WINAPI *_GetNumaHighestNodeNumber) (PULONG);
196  static BOOL (WINAPI *_GetNumaNodeProcessorMask) (UCHAR, PULONGLONG);
197  static USHORT (WINAPI *_RtlCaptureStackBackTrace)(ULONG, ULONG, PVOID*, PULONG);
198  static BOOL initialized;
199
200  static void initialize();
201  static void initializeCommon();
202
203#ifdef JDK6_OR_EARLIER
204private:
205  static BOOL (WINAPI *_SwitchToThread)(void);
206  static HANDLE (WINAPI* _CreateToolhelp32Snapshot)(DWORD,DWORD);
207  static BOOL (WINAPI* _Module32First)(HANDLE,LPMODULEENTRY32);
208  static BOOL (WINAPI* _Module32Next)(HANDLE,LPMODULEENTRY32);
209  static void (WINAPI *_GetNativeSystemInfo)(LPSYSTEM_INFO);
210#endif
211
212};
213
214class Advapi32Dll: AllStatic {
215public:
216  static BOOL AdjustTokenPrivileges(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
217  static BOOL OpenProcessToken(HANDLE, DWORD, PHANDLE);
218  static BOOL LookupPrivilegeValue(LPCTSTR, LPCTSTR, PLUID);
219
220  static BOOL AdvapiAvailable();
221
222#ifdef JDK6_OR_EARLIER
223private:
224  static BOOL (WINAPI *_AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
225  static BOOL (WINAPI *_OpenProcessToken)(HANDLE, DWORD, PHANDLE);
226  static BOOL (WINAPI *_LookupPrivilegeValue)(LPCTSTR, LPCTSTR, PLUID);
227  static BOOL initialized;
228
229  static void initialize();
230#endif
231};
232
233class PSApiDll: AllStatic {
234public:
235  static BOOL EnumProcessModules(HANDLE, HMODULE *, DWORD, LPDWORD);
236  static DWORD GetModuleFileNameEx(HANDLE, HMODULE, LPTSTR, DWORD);
237  static BOOL GetModuleInformation(HANDLE, HMODULE, LPMODULEINFO, DWORD);
238
239  static BOOL PSApiAvailable();
240
241#ifdef JDK6_OR_EARLIER
242private:
243  static BOOL (WINAPI *_EnumProcessModules)(HANDLE, HMODULE *, DWORD, LPDWORD);
244  static BOOL (WINAPI *_GetModuleFileNameEx)(HANDLE, HMODULE, LPTSTR, DWORD);;
245  static BOOL (WINAPI *_GetModuleInformation)(HANDLE, HMODULE, LPMODULEINFO, DWORD);
246  static BOOL initialized;
247
248  static void initialize();
249#endif
250};
251
252#endif // OS_WINDOWS_VM_OS_WINDOWS_HPP
253