287 lines
9.3 KiB
C++
287 lines
9.3 KiB
C++
/*
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* Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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#ifndef OS_WINDOWS_VM_OS_WINDOWS_HPP
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#define OS_WINDOWS_VM_OS_WINDOWS_HPP
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// Win32_OS defines the interface to windows operating systems
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// Information about the protection of the page at address '0' on this os.
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static bool zero_page_read_protected() { return true; }
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// File conventions
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static const char* file_separator() { return "\\"; }
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static const char* line_separator() { return "\r\n"; }
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static const char* path_separator() { return ";"; }
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class win32 {
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friend class os;
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friend unsigned __stdcall java_start(class Thread*);
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protected:
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static int _vm_page_size;
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static int _vm_allocation_granularity;
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static int _processor_type;
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static int _processor_level;
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static julong _physical_memory;
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static size_t _default_stack_size;
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static bool _is_nt;
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static bool _is_windows_2003;
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static bool _is_windows_server;
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static bool _has_exit_bug;
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static bool _has_performance_count;
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static void print_windows_version(outputStream* st);
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public:
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// Windows-specific interface:
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static void initialize_system_info();
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static void setmode_streams();
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// Processor info as provided by NT
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static int processor_type() { return _processor_type; }
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// Processor level may not be accurate on non-NT systems
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static int processor_level() {
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assert(is_nt(), "use vm_version instead");
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return _processor_level;
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}
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static julong available_memory();
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static julong physical_memory() { return _physical_memory; }
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// load dll from Windows system directory or Windows directory
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static HINSTANCE load_Windows_dll(const char* name, char *ebuf, int ebuflen);
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private:
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enum Ept { EPT_THREAD, EPT_PROCESS, EPT_PROCESS_DIE };
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// Wrapper around _endthreadex(), exit() and _exit()
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static int exit_process_or_thread(Ept what, int exit_code);
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static void initialize_performance_counter();
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public:
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// Generic interface:
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// Trace number of created threads
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static intx _os_thread_limit;
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static volatile intx _os_thread_count;
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// Tells whether the platform is NT or Windown95
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static bool is_nt() { return _is_nt; }
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// Tells whether this is a server version of Windows
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static bool is_windows_server() { return _is_windows_server; }
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// Tells whether the platform is Windows 2003
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static bool is_windows_2003() { return _is_windows_2003; }
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// Tells whether there can be the race bug during process exit on this platform
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static bool has_exit_bug() { return _has_exit_bug; }
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// Returns the byte size of a virtual memory page
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static int vm_page_size() { return _vm_page_size; }
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// Returns the size in bytes of memory blocks which can be allocated.
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static int vm_allocation_granularity() { return _vm_allocation_granularity; }
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// Read the headers for the executable that started the current process into
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// the structure passed in (see winnt.h).
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static void read_executable_headers(PIMAGE_NT_HEADERS);
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// Default stack size for the current process.
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static size_t default_stack_size() { return _default_stack_size; }
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#ifndef _WIN64
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// A wrapper to install a structured exception handler for fast JNI accesors.
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static address fast_jni_accessor_wrapper(BasicType);
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#endif
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// filter function to ignore faults on serializations page
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static LONG WINAPI serialize_fault_filter(struct _EXCEPTION_POINTERS* e);
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};
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/*
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* Crash protection for the watcher thread. Wrap the callback
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* with a __try { call() }
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* To be able to use this - don't take locks, don't rely on destructors,
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* don't make OS library calls, don't allocate memory, don't print,
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* don't call code that could leave the heap / memory in an inconsistent state,
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* or anything else where we are not in control if we suddenly jump out.
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*/
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class WatcherThreadCrashProtection : public StackObj {
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public:
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WatcherThreadCrashProtection();
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bool call(os::CrashProtectionCallback& cb);
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};
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class PlatformEvent : public CHeapObj<mtInternal> {
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private:
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double CachePad [4] ; // increase odds that _Event is sole occupant of cache line
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volatile int _Event ;
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HANDLE _ParkHandle ;
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public: // TODO-FIXME: make dtor private
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~PlatformEvent() { guarantee (0, "invariant") ; }
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public:
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PlatformEvent() {
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_Event = 0 ;
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_ParkHandle = CreateEvent (NULL, false, false, NULL) ;
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guarantee (_ParkHandle != NULL, "invariant") ;
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}
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// Exercise caution using reset() and fired() - they may require MEMBARs
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void reset() { _Event = 0 ; }
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int fired() { return _Event; }
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void park () ;
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void unpark () ;
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int park (jlong millis) ;
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} ;
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class PlatformParker : public CHeapObj<mtInternal> {
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protected:
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HANDLE _ParkEvent ;
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public:
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~PlatformParker () { guarantee (0, "invariant") ; }
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PlatformParker () {
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_ParkEvent = CreateEvent (NULL, true, false, NULL) ;
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guarantee (_ParkEvent != NULL, "invariant") ;
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}
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} ;
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// JDK7 requires VS2010
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#if _MSC_VER < 1600
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#define JDK6_OR_EARLIER 1
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#endif
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class WinSock2Dll: AllStatic {
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public:
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static BOOL WSAStartup(WORD, LPWSADATA);
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static struct hostent* gethostbyname(const char *name);
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static BOOL WinSock2Available();
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#ifdef JDK6_OR_EARLIER
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private:
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static int (PASCAL FAR* _WSAStartup)(WORD, LPWSADATA);
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static struct hostent *(PASCAL FAR *_gethostbyname)(...);
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static BOOL initialized;
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static void initialize();
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#endif
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};
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class Kernel32Dll: AllStatic {
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public:
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static BOOL SwitchToThread();
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static SIZE_T GetLargePageMinimum();
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static BOOL SwitchToThreadAvailable();
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static BOOL GetLargePageMinimumAvailable();
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// Help tools
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static BOOL HelpToolsAvailable();
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static HANDLE CreateToolhelp32Snapshot(DWORD,DWORD);
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static BOOL Module32First(HANDLE,LPMODULEENTRY32);
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static BOOL Module32Next(HANDLE,LPMODULEENTRY32);
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static void GetNativeSystemInfo(LPSYSTEM_INFO);
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// NUMA calls
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static BOOL NumaCallsAvailable();
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static LPVOID VirtualAllocExNuma(HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD);
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static BOOL GetNumaHighestNodeNumber(PULONG);
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static BOOL GetNumaNodeProcessorMask(UCHAR, PULONGLONG);
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// Stack walking
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static USHORT RtlCaptureStackBackTrace(ULONG, ULONG, PVOID*, PULONG);
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private:
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// GetLargePageMinimum available on Windows Vista/Windows Server 2003
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// and later
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// NUMA calls available Windows Vista/WS2008 and later
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static SIZE_T (WINAPI *_GetLargePageMinimum)(void);
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static LPVOID (WINAPI *_VirtualAllocExNuma) (HANDLE, LPVOID, SIZE_T, DWORD, DWORD, DWORD);
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static BOOL (WINAPI *_GetNumaHighestNodeNumber) (PULONG);
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static BOOL (WINAPI *_GetNumaNodeProcessorMask) (UCHAR, PULONGLONG);
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static USHORT (WINAPI *_RtlCaptureStackBackTrace)(ULONG, ULONG, PVOID*, PULONG);
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static BOOL initialized;
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static void initialize();
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static void initializeCommon();
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#ifdef JDK6_OR_EARLIER
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private:
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static BOOL (WINAPI *_SwitchToThread)(void);
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static HANDLE (WINAPI* _CreateToolhelp32Snapshot)(DWORD,DWORD);
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static BOOL (WINAPI* _Module32First)(HANDLE,LPMODULEENTRY32);
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static BOOL (WINAPI* _Module32Next)(HANDLE,LPMODULEENTRY32);
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static void (WINAPI *_GetNativeSystemInfo)(LPSYSTEM_INFO);
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#endif
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};
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class Advapi32Dll: AllStatic {
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public:
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static BOOL AdjustTokenPrivileges(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
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static BOOL OpenProcessToken(HANDLE, DWORD, PHANDLE);
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static BOOL LookupPrivilegeValue(LPCTSTR, LPCTSTR, PLUID);
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static BOOL AdvapiAvailable();
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#ifdef JDK6_OR_EARLIER
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private:
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static BOOL (WINAPI *_AdjustTokenPrivileges)(HANDLE, BOOL, PTOKEN_PRIVILEGES, DWORD, PTOKEN_PRIVILEGES, PDWORD);
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static BOOL (WINAPI *_OpenProcessToken)(HANDLE, DWORD, PHANDLE);
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static BOOL (WINAPI *_LookupPrivilegeValue)(LPCTSTR, LPCTSTR, PLUID);
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static BOOL initialized;
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static void initialize();
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#endif
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};
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class PSApiDll: AllStatic {
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public:
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static BOOL EnumProcessModules(HANDLE, HMODULE *, DWORD, LPDWORD);
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static DWORD GetModuleFileNameEx(HANDLE, HMODULE, LPTSTR, DWORD);
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static BOOL GetModuleInformation(HANDLE, HMODULE, LPMODULEINFO, DWORD);
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static BOOL PSApiAvailable();
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#ifdef JDK6_OR_EARLIER
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private:
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static BOOL (WINAPI *_EnumProcessModules)(HANDLE, HMODULE *, DWORD, LPDWORD);
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static BOOL (WINAPI *_GetModuleFileNameEx)(HANDLE, HMODULE, LPTSTR, DWORD);;
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static BOOL (WINAPI *_GetModuleInformation)(HANDLE, HMODULE, LPMODULEINFO, DWORD);
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static BOOL initialized;
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static void initialize();
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#endif
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};
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#endif // OS_WINDOWS_VM_OS_WINDOWS_HPP
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