os_windows.hpp revision 7049:396253716f03 
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.
30static bool zero_page_read_protected() { return true; }
31
32// File conventions
33static const char* file_separator() { return "\\"; }
34static const char* line_separator() { return "\r\n"; }
35static const char* path_separator() { return ";"; }
36
37class win32 {
38  friend class os;
39  friend unsigned __stdcall java_start(class Thread*);
40
41 protected:
42  static int    _vm_page_size;
43  static int    _vm_allocation_granularity;
44  static int    _processor_type;
45  static int    _processor_level;
46  static julong _physical_memory;
47  static size_t _default_stack_size;
48  static bool   _is_nt;
49  static bool   _is_windows_2003;
50  static bool   _is_windows_server;
51  static bool   _has_exit_bug;
52  static bool   _has_performance_count;
53
54  static void print_windows_version(outputStream* st);
55
56 public:
57  // Windows-specific interface:
58  static void   initialize_system_info();
59  static void   setmode_streams();
60
61  // Processor info as provided by NT
62  static int processor_type()  { return _processor_type;  }
63  // Processor level may not be accurate on non-NT systems
64  static int processor_level() {
65    assert(is_nt(), "use vm_version instead");
66    return _processor_level;
67  }
68  static julong available_memory();
69  static julong physical_memory() { return _physical_memory; }
70
71  // load dll from Windows system directory or Windows directory
72  static HINSTANCE load_Windows_dll(const char* name, char *ebuf, int ebuflen);
73
74 private:
75  enum Ept { EPT_THREAD, EPT_PROCESS, EPT_PROCESS_DIE };
76  // Wrapper around _endthreadex(), exit() and _exit()
77  static int exit_process_or_thread(Ept what, int exit_code);
78
79  static void initialize_performance_counter();
80
81 public:
82  // Generic interface:
83
84  // Trace number of created threads
85  static          intx  _os_thread_limit;
86  static volatile intx  _os_thread_count;
87
88  // Tells whether the platform is NT or Windown95
89  static bool is_nt() { return _is_nt; }
90
91  // Tells whether this is a server version of Windows
92  static bool is_windows_server() { return _is_windows_server; }
93
94  // Tells whether the platform is Windows 2003
95  static bool is_windows_2003() { return _is_windows_2003; }
96
97  // Tells whether there can be the race bug during process exit on this platform
98  static bool has_exit_bug() { return _has_exit_bug; }
99
100  // Returns the byte size of a virtual memory page
101  static int vm_page_size() { return _vm_page_size; }
102
103  // Returns the size in bytes of memory blocks which can be allocated.
104  static int vm_allocation_granularity() { return _vm_allocation_granularity; }
105
106  // Read the headers for the executable that started the current process into
107  // the structure passed in (see winnt.h).
108  static void read_executable_headers(PIMAGE_NT_HEADERS);
109
110  // Default stack size for the current process.
111  static size_t default_stack_size() { return _default_stack_size; }
112
113#ifndef _WIN64
114  // A wrapper to install a structured exception handler for fast JNI accesors.
115  static address fast_jni_accessor_wrapper(BasicType);
116#endif
117
118  static void call_test_func_with_wrapper(void (*funcPtr)(void));
119
120  // filter function to ignore faults on serializations page
121  static LONG WINAPI serialize_fault_filter(struct _EXCEPTION_POINTERS* e);
122};
123
124/*
125 * Crash protection for the watcher thread. Wrap the callback
126 * with a __try { call() }
127 * To be able to use this - don't take locks, don't rely on destructors,
128 * don't make OS library calls, don't allocate memory, don't print,
129 * don't call code that could leave the heap / memory in an inconsistent state,
130 * or anything else where we are not in control if we suddenly jump out.
131 */
132class WatcherThreadCrashProtection : public StackObj {
133public:
134  WatcherThreadCrashProtection();
135  bool call(os::CrashProtectionCallback& cb);
136};
137
138class PlatformEvent : public CHeapObj<mtInternal> {
139  private:
140    double CachePad [4] ;   // increase odds that _Event is sole occupant of cache line
141    volatile int _Event ;
142    HANDLE _ParkHandle ;
143
144  public:       // TODO-FIXME: make dtor private
145    ~PlatformEvent() { guarantee (0, "invariant") ; }
146
147  public:
148    PlatformEvent() {
149      _Event   = 0 ;
150      _ParkHandle = CreateEvent (NULL, false, false, NULL) ;
151      guarantee (_ParkHandle != NULL, "invariant") ;
152    }
153
154    // Exercise caution using reset() and fired() - they may require MEMBARs
155    void reset() { _Event = 0 ; }
156    int  fired() { return _Event; }
157    void park () ;
158    void unpark () ;
159    int  park (jlong millis) ;
160} ;
161
162
163
164class PlatformParker : public CHeapObj<mtInternal> {
165  protected:
166    HANDLE _ParkEvent ;
167
168  public:
169    ~PlatformParker () { guarantee (0, "invariant") ; }
170    PlatformParker  () {
171      _ParkEvent = CreateEvent (NULL, true, false, NULL) ;
172      guarantee (_ParkEvent != NULL, "invariant") ;
173    }
174
175} ;
176
177// JDK7 requires VS2010
178#if _MSC_VER < 1600
179#define JDK6_OR_EARLIER 1
180#endif
181
182
183
184class WinSock2Dll: AllStatic {
185public:
186  static BOOL WSAStartup(WORD, LPWSADATA);
187  static struct hostent* gethostbyname(const char *name);
188  static BOOL WinSock2Available();
189#ifdef JDK6_OR_EARLIER
190private:
191  static int (PASCAL FAR* _WSAStartup)(WORD, LPWSADATA);
192  static struct hostent *(PASCAL FAR *_gethostbyname)(...);
193  static BOOL initialized;
194
195  static void initialize();
196#endif
197};
198
199class Kernel32Dll: AllStatic {
200public:
201  static BOOL SwitchToThread();
202  static SIZE_T GetLargePageMinimum();
203
204  static BOOL SwitchToThreadAvailable();
205  static BOOL GetLargePageMinimumAvailable();
206
207  // Help tools
208  static BOOL HelpToolsAvailable();
209  static HANDLE CreateToolhelp32Snapshot(DWORD,DWORD);
210  static BOOL Module32First(HANDLE,LPMODULEENTRY32);
211  static BOOL Module32Next(HANDLE,LPMODULEENTRY32);
212
213  static BOOL GetNativeSystemInfoAvailable();
214  static void GetNativeSystemInfo(LPSYSTEM_INFO);
215
216  // NUMA calls
217  static BOOL NumaCallsAvailable();
218  static LPVOID VirtualAllocExNuma(HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD);
219  static BOOL GetNumaHighestNodeNumber(PULONG);
220  static BOOL GetNumaNodeProcessorMask(UCHAR, PULONGLONG);
221
222  // Stack walking
223  static USHORT RtlCaptureStackBackTrace(ULONG, ULONG, PVOID*, PULONG);
224
225private:
226  // GetLargePageMinimum available on Windows Vista/Windows Server 2003
227  // and later
228  // NUMA calls available Windows Vista/WS2008 and later
229
230  static SIZE_T (WINAPI *_GetLargePageMinimum)(void);
231  static LPVOID (WINAPI *_VirtualAllocExNuma) (HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD);
232  static BOOL (WINAPI *_GetNumaHighestNodeNumber) (PULONG);
233  static BOOL (WINAPI *_GetNumaNodeProcessorMask) (UCHAR, PULONGLONG);
234  static USHORT (WINAPI *_RtlCaptureStackBackTrace)(ULONG, ULONG, PVOID*, PULONG);
235  static BOOL initialized;
236
237  static void initialize();
238  static void initializeCommon();
239
240#ifdef JDK6_OR_EARLIER
241private:
242  static BOOL (WINAPI *_SwitchToThread)(void);
243  static HANDLE (WINAPI* _CreateToolhelp32Snapshot)(DWORD,DWORD);
244  static BOOL (WINAPI* _Module32First)(HANDLE,LPMODULEENTRY32);
245  static BOOL (WINAPI* _Module32Next)(HANDLE,LPMODULEENTRY32);
246  static void (WINAPI *_GetNativeSystemInfo)(LPSYSTEM_INFO);
247#endif
248
249};
250
251class Advapi32Dll: AllStatic {
252public:
253  static BOOL AdjustTokenPrivileges(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
254  static BOOL OpenProcessToken(HANDLE, DWORD, PHANDLE);
255  static BOOL LookupPrivilegeValue(LPCTSTR, LPCTSTR, PLUID);
256
257  static BOOL AdvapiAvailable();
258
259#ifdef JDK6_OR_EARLIER
260private:
261  static BOOL (WINAPI *_AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
262  static BOOL (WINAPI *_OpenProcessToken)(HANDLE, DWORD, PHANDLE);
263  static BOOL (WINAPI *_LookupPrivilegeValue)(LPCTSTR, LPCTSTR, PLUID);
264  static BOOL initialized;
265
266  static void initialize();
267#endif
268};
269
270class PSApiDll: AllStatic {
271public:
272  static BOOL EnumProcessModules(HANDLE, HMODULE *, DWORD, LPDWORD);
273  static DWORD GetModuleFileNameEx(HANDLE, HMODULE, LPTSTR, DWORD);
274  static BOOL GetModuleInformation(HANDLE, HMODULE, LPMODULEINFO, DWORD);
275
276  static BOOL PSApiAvailable();
277
278#ifdef JDK6_OR_EARLIER
279private:
280  static BOOL (WINAPI *_EnumProcessModules)(HANDLE, HMODULE *, DWORD, LPDWORD);
281  static BOOL (WINAPI *_GetModuleFileNameEx)(HANDLE, HMODULE, LPTSTR, DWORD);;
282  static BOOL (WINAPI *_GetModuleInformation)(HANDLE, HMODULE, LPMODULEINFO, DWORD);
283  static BOOL initialized;
284
285  static void initialize();
286#endif
287};
288
289#endif // OS_WINDOWS_VM_OS_WINDOWS_HPP
290