Fri, 05 Apr 2013 11:15:13 -0700
8006001: [parfait] Possible file leak in hotspot/src/os/linux/vm/perfMemory_linux.cpp
Reviewed-by: zgu, coleenp, hseigel, dholmes
1 /*
2 * Copyright (c) 1997, 2012, 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 */
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
29 class win32 {
30 friend class os;
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;
43 static void print_windows_version(outputStream* st);
45 public:
46 // Windows-specific interface:
47 static void initialize_system_info();
48 static void setmode_streams();
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; }
60 // load dll from Windows system directory or Windows directory
61 static HINSTANCE load_Windows_dll(const char* name, char *ebuf, int ebuflen);
63 public:
64 // Generic interface:
66 // Trace number of created threads
67 static intx _os_thread_limit;
68 static volatile intx _os_thread_count;
70 // Tells whether the platform is NT or Windown95
71 static bool is_nt() { return _is_nt; }
73 // Tells whether this is a server version of Windows
74 static bool is_windows_server() { return _is_windows_server; }
76 // Tells whether the platform is Windows 2003
77 static bool is_windows_2003() { return _is_windows_2003; }
79 // Returns the byte size of a virtual memory page
80 static int vm_page_size() { return _vm_page_size; }
82 // Returns the size in bytes of memory blocks which can be allocated.
83 static int vm_allocation_granularity() { return _vm_allocation_granularity; }
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);
89 // Default stack size for the current process.
90 static size_t default_stack_size() { return _default_stack_size; }
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
97 // filter function to ignore faults on serializations page
98 static LONG WINAPI serialize_fault_filter(struct _EXCEPTION_POINTERS* e);
99 };
101 class 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 ;
107 public: // TODO-FIXME: make dtor private
108 ~PlatformEvent() { guarantee (0, "invariant") ; }
110 public:
111 PlatformEvent() {
112 _Event = 0 ;
113 _ParkHandle = CreateEvent (NULL, false, false, NULL) ;
114 guarantee (_ParkHandle != NULL, "invariant") ;
115 }
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 } ;
127 class PlatformParker : public CHeapObj<mtInternal> {
128 protected:
129 HANDLE _ParkEvent ;
131 public:
132 ~PlatformParker () { guarantee (0, "invariant") ; }
133 PlatformParker () {
134 _ParkEvent = CreateEvent (NULL, true, false, NULL) ;
135 guarantee (_ParkEvent != NULL, "invariant") ;
136 }
138 } ;
140 // JDK7 requires VS2010
141 #if _MSC_VER < 1600
142 #define JDK6_OR_EARLIER 1
143 #endif
147 class WinSock2Dll: AllStatic {
148 public:
149 static BOOL WSAStartup(WORD, LPWSADATA);
150 static struct hostent* gethostbyname(const char *name);
151 static BOOL WinSock2Available();
152 #ifdef JDK6_OR_EARLIER
153 private:
154 static int (PASCAL FAR* _WSAStartup)(WORD, LPWSADATA);
155 static struct hostent *(PASCAL FAR *_gethostbyname)(...);
156 static BOOL initialized;
158 static void initialize();
159 #endif
160 };
162 class Kernel32Dll: AllStatic {
163 public:
164 static BOOL SwitchToThread();
165 static SIZE_T GetLargePageMinimum();
167 static BOOL SwitchToThreadAvailable();
168 static BOOL GetLargePageMinimumAvailable();
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);
176 static BOOL GetNativeSystemInfoAvailable();
177 static void GetNativeSystemInfo(LPSYSTEM_INFO);
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);
185 // Stack walking
186 static USHORT RtlCaptureStackBackTrace(ULONG, ULONG, PVOID*, PULONG);
188 private:
189 // GetLargePageMinimum available on Windows Vista/Windows Server 2003
190 // and later
191 // NUMA calls available Windows Vista/WS2008 and later
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;
200 static void initialize();
201 static void initializeCommon();
203 #ifdef JDK6_OR_EARLIER
204 private:
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
212 };
214 class Advapi32Dll: AllStatic {
215 public:
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);
220 static BOOL AdvapiAvailable();
222 #ifdef JDK6_OR_EARLIER
223 private:
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;
229 static void initialize();
230 #endif
231 };
233 class PSApiDll: AllStatic {
234 public:
235 static BOOL EnumProcessModules(HANDLE, HMODULE *, DWORD, LPDWORD);
236 static DWORD GetModuleFileNameEx(HANDLE, HMODULE, LPTSTR, DWORD);
237 static BOOL GetModuleInformation(HANDLE, HMODULE, LPMODULEINFO, DWORD);
239 static BOOL PSApiAvailable();
241 #ifdef JDK6_OR_EARLIER
242 private:
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;
248 static void initialize();
249 #endif
250 };
252 #endif // OS_WINDOWS_VM_OS_WINDOWS_HPP