jdk8-mips64-public/hotspot: src/os/windows/vm/os_windows.hpp@b1cbb0907b36 (annotated)

src/os/windows/vm/os_windows.hpp@b1cbb0907b36 (annotated)

src/os/windows/vm/os_windows.hpp

Fri, 15 Apr 2011 09:34:43 -0400

author: zgu
date: Fri, 15 Apr 2011 09:34:43 -0400
changeset 3031: b1cbb0907b36
parent 2520: 63d374c54045
child 3085: 3cd0157e1d4d
permissions: -rw-r--r--

7016797: Hotspot: securely/restrictive load dlls and new API for loading system dlls
Summary: Created Windows Dll wrapped to handle jdk6 and jdk7 platform requirements, also provided more restictive Dll search orders for Windows system Dlls.
Reviewed-by: acorn, dcubed, ohair, alanb

 /*
  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #ifndef OS_WINDOWS_VM_OS_WINDOWS_HPP
 #define OS_WINDOWS_VM_OS_WINDOWS_HPP
 // Win32_OS defines the interface to windows operating systems
 class win32 {
  protected:
   static int    _vm_page_size;
   static int    _vm_allocation_granularity;
   static int    _processor_type;
   static int    _processor_level;
   static julong _physical_memory;
   static size_t _default_stack_size;
   static bool   _is_nt;
   static bool   _is_windows_2003;
   static bool   _is_windows_server;
  public:
   // Windows-specific interface:
   static void   initialize_system_info();
   static void   setmode_streams();
   // Processor info as provided by NT
   static int processor_type()  { return _processor_type;  }
   // Processor level may not be accurate on non-NT systems
   static int processor_level() {
     assert(is_nt(), "use vm_version instead");
     return _processor_level;
   }
   static julong available_memory();
   static julong physical_memory() { return _physical_memory; }
   // load dll from Windows system directory or Windows directory
   static HINSTANCE load_Windows_dll(const char* name, char *ebuf, int ebuflen);
  public:
   // Generic interface:
   // Trace number of created threads
   static          intx  _os_thread_limit;
   static volatile intx  _os_thread_count;
   // Tells whether the platform is NT or Windown95
   static bool is_nt() { return _is_nt; }
   // Tells whether this is a server version of Windows
   static bool is_windows_server() { return _is_windows_server; }
   // Tells whether the platform is Windows 2003
   static bool is_windows_2003() { return _is_windows_2003; }
   // Returns the byte size of a virtual memory page
   static int vm_page_size() { return _vm_page_size; }
   // Returns the size in bytes of memory blocks which can be allocated.
   static int vm_allocation_granularity() { return _vm_allocation_granularity; }
   // Read the headers for the executable that started the current process into
   // the structure passed in (see winnt.h).
   static void read_executable_headers(PIMAGE_NT_HEADERS);
   // Default stack size for the current process.
   static size_t default_stack_size() { return _default_stack_size; }
 #ifndef _WIN64
   // A wrapper to install a structured exception handler for fast JNI accesors.
   static address fast_jni_accessor_wrapper(BasicType);
 #endif
   // filter function to ignore faults on serializations page
   static LONG WINAPI serialize_fault_filter(struct _EXCEPTION_POINTERS* e);
 };
 class PlatformEvent : public CHeapObj {
   private:
     double CachePad [4] ;   // increase odds that _Event is sole occupant of cache line
     volatile int _Event ;
     HANDLE _ParkHandle ;
   public:       // TODO-FIXME: make dtor private
     ~PlatformEvent() { guarantee (0, "invariant") ; }
   public:
     PlatformEvent() {
       _Event   = 0 ;
       _ParkHandle = CreateEvent (NULL, false, false, NULL) ;
       guarantee (_ParkHandle != NULL, "invariant") ;
     }
     // Exercise caution using reset() and fired() - they may require MEMBARs
     void reset() { _Event = 0 ; }
     int  fired() { return _Event; }
     void park () ;
     void unpark () ;
     int  park (jlong millis) ;
 } ;
 class PlatformParker : public CHeapObj {
   protected:
     HANDLE _ParkEvent ;
   public:
     ~PlatformParker () { guarantee (0, "invariant") ; }
     PlatformParker  () {
       _ParkEvent = CreateEvent (NULL, true, false, NULL) ;
       guarantee (_ParkEvent != NULL, "invariant") ;
     }
 } ;
 // JDK7 requires VS2010
 #if _MSC_VER < 1600
 #define JDK6_OR_EARLIER 1
 #endif
 class WinSock2Dll: AllStatic {
 public:
   static BOOL WSAStartup(WORD, LPWSADATA);
   static struct hostent* gethostbyname(const char *name);
   static BOOL WinSock2Available();
 #ifdef JDK6_OR_EARLIER
 private:
   static int (PASCAL FAR* _WSAStartup)(WORD, LPWSADATA);
   static struct hostent *(PASCAL FAR *_gethostbyname)(...);
   static BOOL initialized;
   static void initialize();
 #endif
 };
 class Kernel32Dll: AllStatic {
 public:
   static BOOL SwitchToThread();
   static SIZE_T GetLargePageMinimum();
   static BOOL SwitchToThreadAvailable();
   static BOOL GetLargePageMinimumAvailable();
   // Help tools
   static BOOL HelpToolsAvailable();
   static HANDLE CreateToolhelp32Snapshot(DWORD,DWORD);
   static BOOL Module32First(HANDLE,LPMODULEENTRY32);
   static BOOL Module32Next(HANDLE,LPMODULEENTRY32);
   static BOOL GetNativeSystemInfoAvailable();
   static void GetNativeSystemInfo(LPSYSTEM_INFO);
 private:
   // GetLargePageMinimum available on Windows Vista/Windows Server 2003
   // and later
   static SIZE_T (WINAPI *_GetLargePageMinimum)(void);
   static BOOL initialized;
   static void initialize();
 #ifdef JDK6_OR_EARLIER
 private:
   static BOOL (WINAPI *_SwitchToThread)(void);
   static HANDLE (WINAPI* _CreateToolhelp32Snapshot)(DWORD,DWORD);
   static BOOL (WINAPI* _Module32First)(HANDLE,LPMODULEENTRY32);
   static BOOL (WINAPI* _Module32Next)(HANDLE,LPMODULEENTRY32);
   static void (WINAPI *_GetNativeSystemInfo)(LPSYSTEM_INFO);
 #endif
 };
 class Advapi32Dll: AllStatic {
 public:
   static BOOL AdjustTokenPrivileges(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
   static BOOL OpenProcessToken(HANDLE, DWORD, PHANDLE);
   static BOOL LookupPrivilegeValue(LPCTSTR, LPCTSTR, PLUID);
   static BOOL AdvapiAvailable();
 #ifdef JDK6_OR_EARLIER
 private:
   static BOOL (WINAPI *_AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
   static BOOL (WINAPI *_OpenProcessToken)(HANDLE, DWORD, PHANDLE);
   static BOOL (WINAPI *_LookupPrivilegeValue)(LPCTSTR, LPCTSTR, PLUID);
   static BOOL initialized;
   static void initialize();
 #endif
 };
 class PSApiDll: AllStatic {
 public:
   static BOOL EnumProcessModules(HANDLE, HMODULE *, DWORD, LPDWORD);
   static DWORD GetModuleFileNameEx(HANDLE, HMODULE, LPTSTR, DWORD);
   static BOOL GetModuleInformation(HANDLE, HMODULE, LPMODULEINFO, DWORD);
   static BOOL PSApiAvailable();
 #ifdef JDK6_OR_EARLIER
 private:
   static BOOL (WINAPI *_EnumProcessModules)(HANDLE, HMODULE *, DWORD, LPDWORD);
   static BOOL (WINAPI *_GetModuleFileNameEx)(HANDLE, HMODULE, LPTSTR, DWORD);;
   static BOOL (WINAPI *_GetModuleInformation)(HANDLE, HMODULE, LPMODULEINFO, DWORD);
   static BOOL initialized;
   static void initialize();
 #endif
 };
 #endif // OS_WINDOWS_VM_OS_WINDOWS_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/os/windows/vm/os_windows.hpp@b1cbb0907b36 (annotated)

src/os/windows/vm/os_windows.hpp